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let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | and we know that when we have a fraction like this we 're not changing the value of the fraction if we multiple the numerator and the denominator by the same quantity . and so what could we multiply this denominator by to make it a whole number ? well we can multiply it by 10 and then another 10 . so we can multiply it... | what happens if you have to multiply one number by 100 and you only need to multiply the second number by 10 ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | 7 times 4 is 28 . plus 1 is 29 . and now i can subtract . | when u divide decimals is it the same thing as dividing over 1 ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | you subtract , and we have no remainder . so 3,042 divided by 42 is the same thing as 30.42 divided by 0.42 . and it 's going to be equal to 72 . | why did you put a 1 on top of the 42 and add it ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? | did you mean to put 30.42 instead of 30.24 ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | and so this is where , now the decimal place is . you could view this as 3,024 . let me clear that 3024 divided by 42 . | doing 302 - 294 seemed extremely confusing for such a simple subtraction problem , what is that method called ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . | why did sal switch the decimals ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | actually , i did n't have to copy and paste that , i 'll just write this . this is equal to 72 . just like that . | would n't you have to divide 72 by 10000 ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | how many times does 42 go into 302 ? and like always this is a bit of an art when your dividing by a two-digit or a multi-digit number , i should say . so lets think about it a little bit . | is there a simpler way of dividing decimals ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? | 6 sal switched 30.24 as 30.42 was that a mistake ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | well the important realization is , is when you 're doing a division problem like this , you will get the same answer as long as you multiply or divide both numbers by the same thing . and to understand that , rewrite this division as 30.42 over 0.42 . we could write it really as a fraction . | sal writes 30.42 instead of 30.24. ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | well it does not go into 30 so we can move on to 302 . how many times does 42 go into 302 ? and like always this is a bit of an art when your dividing by a two-digit or a multi-digit number , i should say . | the method i was taught : 3024/42=72 294 how often does 42 go into 302 ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? | why did sal say 30.42 instead of 30.24 ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? | did sal mean 30.24 instead of 30.42 ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . | a ) how much did a pen cost ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . | b ) how much did a pencil cost ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | the decimal is now there if you care about it . and , 0.42 times 100 . once again move the decimal one , two places to the right , it is now 42 . | how do you divide when you have say 0.677 divided by 0.98 how do you move the decimal when you multiply the numbers each by 100 but one number is not whole ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | so we 're not changing the value of this fraction . or , you could view this , this division problem . so this is going to be 30.42 times 100 . | are there other methods for decimal division ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | you could view this as 3,024 . let me clear that 3024 divided by 42 . let me clear that . | is 3024 divided by 42 the same as 1512 divided by 21 ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? | why did you change the 30.24 to 30.42 ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . | why do n't we do that when we divide decimals ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | so this is going to be 30.42 times 100 . move the decimal two places to the right , gets you 3,042 . the decimal is now there if you care about it . and , 0.42 times 100 . | why did the put decimal in before they knew it needed to be there ? |
let 's see if we can divide 30.24 divided by 0.42 . and try pausing the video and solving it on your own before i work through it . so there is a couple of ways you can think about it . we could just write it as 30.24 divided by 0.42 . but what do you do now ? well the important realization is , is when you 're doing a... | so how many times does 40 go into 300 ? well how many times does 4 go into 30 ? well , it looks like it 's about seven times , so i 'm going to try out a 7 , see if it works out . | when you divide decimals , can you make the dividend an integer as well as the divisor ? |
there are four seasons each year . rafael gets a haircut two times each season . one at arlo 's barber shop , and the other at awesome snips . which choices represent the number of haircuts rafael will get this year ? and they 've even made a little diagram for us right over here . so they tell us there 's four season... | there are four seasons each year . rafael gets a haircut two times each season . | would you be able to use a quadratic equation for this sort of problem ? |
there are four seasons each year . rafael gets a haircut two times each season . one at arlo 's barber shop , and the other at awesome snips . which choices represent the number of haircuts rafael will get this year ? and they 've even made a little diagram for us right over here . so they tell us there 's four season... | there are four seasons each year . rafael gets a haircut two times each season . | how are you supposed to know your seasons if you do n't know how to add ? |
there are four seasons each year . rafael gets a haircut two times each season . one at arlo 's barber shop , and the other at awesome snips . which choices represent the number of haircuts rafael will get this year ? and they 've even made a little diagram for us right over here . so they tell us there 's four season... | which choices represent the number of haircuts rafael will get this year ? and they 've even made a little diagram for us right over here . so they tell us there 's four seasons in the year , spring , summer , autumn , winter . | repeated addition is multiplying , right ? |
so we were talking in a previous video about hypertension and the damage that it causes on the body . and what i 'd like to do is pick up where we left off and finish that conversation . and we had kind of divided things up into receiving high blood pressures and generating high blood pressures . and receiving high pre... | because this might be less intuitive , but actually making the pressure go so high is not an easy thing to do . and it 's actually a very challenging task for the heart to accomplish . and in trying to figure it out , sometimes the heart can run into troubles . | what actually causes the heart muscle to grow thicker ? |
so we were talking in a previous video about hypertension and the damage that it causes on the body . and what i 'd like to do is pick up where we left off and finish that conversation . and we had kind of divided things up into receiving high blood pressures and generating high blood pressures . and receiving high pre... | and what that basically means is that the left heart says , you know what , i ca n't generate the pressures that are being required to move all that blood around , and so i wo n't . i wo n't generate those pressures . i 'll do the best i can , and maybe i ca n't move , let 's say , six liters of blood around the body ,... | also what happens to the extra liter that is n't pumped ? |
so we were talking in a previous video about hypertension and the damage that it causes on the body . and what i 'd like to do is pick up where we left off and finish that conversation . and we had kind of divided things up into receiving high blood pressures and generating high blood pressures . and receiving high pre... | but it comes with a little bit of a risk because now you might have a risk of an mi or myocardial infarction . the other possibility is that the left heart does n't compensate , and you have what 's called left heart failure . and what that basically means is that the left heart says , you know what , i ca n't generate... | could somebody please explain the difference between left and right sided heart failure and what the body experiences with each of them , or is there a video explaining this already and i have n't found it yet ? |
so we were talking in a previous video about hypertension and the damage that it causes on the body . and what i 'd like to do is pick up where we left off and finish that conversation . and we had kind of divided things up into receiving high blood pressures and generating high blood pressures . and receiving high pre... | and so what happens is that you have areas where blood is basically able to get to those areas and other areas where blood is not able to get there . and where the blood is unable to get enough oxygen to that heart muscle , you could have a heart attack or a myocardial infarction . so left ventricular hypertrophy is a ... | could someone please specify the types of resistance in blood vessels that ( forces the heart to pump out blood at an increased pace ) or refer a video pertaining to that information ? |
so we were talking in a previous video about hypertension and the damage that it causes on the body . and what i 'd like to do is pick up where we left off and finish that conversation . and we had kind of divided things up into receiving high blood pressures and generating high blood pressures . and receiving high pre... | and so if you remember , any time you have a force over an area -- i 'll write that over here -- anytime you have a force over an area , you have a pressure . and in this case , that is the arterial pressure . so when i talk about arterial pressure , i 'm actually talking about the force that the left ventricle generat... | what is mean arterial pressure ? |
the goal of this video is to try to compare these two quantities . i have 0.17 and i have 0.2 , and i wan na figure out which of these two is larger or maybe they 're equal , and i encourage you to pause the video to try to figure that out . one way to do it is to try to visualize these . each of these large squares y... | you want to open to that one . so we have 0.17 or 17/100 , is less than 2/10 . now , another way that we could 've tackled this , even without having to draw all of this , is we could 've just gone to the largest place value . | is n't 17 larger than 2 ? |
the goal of this video is to try to compare these two quantities . i have 0.17 and i have 0.2 , and i wan na figure out which of these two is larger or maybe they 're equal , and i encourage you to pause the video to try to figure that out . one way to do it is to try to visualize these . each of these large squares y... | so , one way to visualize 0.17 , which is 17/100 , is the fraction of this whole that is filled in magenta . now what about 0.2 ? 0.2 is the same thing as 2/10 . | how are the decimals in 0.009 and 0.09 related ? |
the goal of this video is to try to compare these two quantities . i have 0.17 and i have 0.2 , and i wan na figure out which of these two is larger or maybe they 're equal , and i encourage you to pause the video to try to figure that out . one way to do it is to try to visualize these . each of these large squares y... | you want to open to that one . so we have 0.17 or 17/100 , is less than 2/10 . now , another way that we could 've tackled this , even without having to draw all of this , is we could 've just gone to the largest place value . | if 17 hundredths equal 0.17 then what does 17 tenths look like ? |
the goal of this video is to try to compare these two quantities . i have 0.17 and i have 0.2 , and i wan na figure out which of these two is larger or maybe they 're equal , and i encourage you to pause the video to try to figure that out . one way to do it is to try to visualize these . each of these large squares y... | so let 's fill in two of them . we have 1/10 and 2/10 . which of these is larger ? | are decimals remainders for dividing by 10 ? |
the goal of this video is to try to compare these two quantities . i have 0.17 and i have 0.2 , and i wan na figure out which of these two is larger or maybe they 're equal , and i encourage you to pause the video to try to figure that out . one way to do it is to try to visualize these . each of these large squares y... | and notice 10/100 , i filled in one out of the 10 rows , so this is the same thing as 1/10 . so that 's 10/100 , 11/100 , 12/100 , 13 , 14 , 15 , 16 , 17 . so , one way to visualize 0.17 , which is 17/100 , is the fraction of this whole that is filled in magenta . | what is 100 divided by 3 ? |
the goal of this video is to try to compare these two quantities . i have 0.17 and i have 0.2 , and i wan na figure out which of these two is larger or maybe they 're equal , and i encourage you to pause the video to try to figure that out . one way to do it is to try to visualize these . each of these large squares y... | you want to open to that one . so we have 0.17 or 17/100 , is less than 2/10 . now , another way that we could 've tackled this , even without having to draw all of this , is we could 've just gone to the largest place value . | how did you know to make 0.17 have 10x10 but the other have the squares ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | so clearly , i must have to give you some initial conditions in order to do this properly . and then plus 4 times the laplace transform of y is equal to -- what 's the laplace transform of sine of t ? that should be second nature by now . | i understand the laplace transform process and solution , but should n't sal be adding the homogeneous solution as well ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | let 's solve this differential equation , an interpretation of it . and i actually do a whole playlist on interpretations of differential equations and how you model it , but you know , you can kind of view this is a forcing function . that it 's a weird forcing function of this being applied to some weight with , you ... | is the forcing function not allowing the solution to go past certain boundaries ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step function 0 up until 2 pi of t times sine of t minus 2 pi . let 's solve this differential equation , an interpretation of it . and i actually do a whole playlist on interpretations of di... | can laplace transformation give general solution of differential equation ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | so then this is just going to be equal to -- if we just do this piece right here -- it 's going to be equal to e to the minus cs -- our c is 2 pi -- e to the minus 2 pi s times the laplace transform of f of t. f of t is just sine of t before we shifted . this is f of t minus 2 pi . so f of t is just going to be sine of... | 0 , should n't the f ( t ) in blue be f ( s ) instead ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step function 0 up until 2 pi of t times sine of t minus 2 pi . let 's solve this differ... | what is a periodic function ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | so then this is just going to be equal to -- if we just do this piece right here -- it 's going to be equal to e to the minus cs -- our c is 2 pi -- e to the minus 2 pi s times the laplace transform of f of t. f of t is just sine of t before we shifted . this is f of t minus 2 pi . so f of t is just going to be sine of... | at 2*pi at any given point this term will equal zero right ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | and then you just pattern match on the coefficients . this is all just intense partial fraction expansion . and you say , look , a plus c is the coefficient of the s cubed terms . | does it really matter that you use ( as +b ) and ( cs +d ) as the new numerators in the process of partial fraction decompositon when the numerator on the other side is merely an integer ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | so let me change this to a 6 . minus 1/6 times 2 is minus 1/3 . so i did that just so i get this in the form of the laplace transform of sine of t. now , let 's see if there 's anything that i can do from here . | why we ca n't use a/s^2+1 + b/s^2+4 in this question ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | if a is equal to 0 , then c is equals to 0 . and let 's see what we can get here . if we subtract this from that , we get minus 3b . | can we get a real life example using the dirac delta function ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | can we use laplace transforms for des which are n't initial value problems ? |
let 's apply everything we 've learned to an actual differential equation . instead of just taking laplace transforms and taking their inverse , let 's actually solve a problem . so let 's say that i have the second derivative of my function y plus 4 times my function y is equal to sine of t minus the unit step functio... | so d is equal to 1/3 . so all of that work , and we actually have a pretty simple result . our equation , this thing here , can be rewritten as -- the a disappeared . | `` '' arent b and d supposed to be negatives of each other ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | when you 're looking at the dot structure , one of these bonds is the pi bonds , i 'm just gon na say it 's this one right here . if you have a double bond , one of those bonds , the sigma bond and one of those bonds is a pi bond . we have a total of one pi bond in the ethylene molecule . | simply to indicate one additional bond is possible ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | sp2 hybrid orbital , sp2 , sp2 and then one unhybridized p orbital right here . boron only has three valance electrons . let 's go ahead and put in those valance electrons . | boron in bf3 molecule the b has only 3 electrons in outermost shell and after bonding with flourine the b contains total 6 electrons but according to the octet rule the b should contain 8 ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | i know that each of those carbons is going to have an unhybridized p orbital here . an unhybridized p orbital with one electron too . let me go ahead and draw that in . | for c2h4 , why did it start out with one electron in the s2 orbital and and extra electron in the p orbital ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | this is an sp2 hybrid orbital and same with this one , an sp2 hybrid orbital . we call this sp2 hybridization . let me go and write this up here . | when does sp2 hybridization take place ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let me go ahead and write that over here . there are five sigma bonds . if i would try to find those on my dot structure this would be a sigma bond . | what about triple bonds with the central atoms , how many sigma bonds and pi bonds would there be ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | when you 're looking at the dot structure , one of these bonds is the pi bonds , i 'm just gon na say it 's this one right here . if you have a double bond , one of those bonds , the sigma bond and one of those bonds is a pi bond . we have a total of one pi bond in the ethylene molecule . | why are double bonds always made of one sigma and one pi bond ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | when we 're looking at the example of ethane , we have free rotation about the sigma bond that connected the two carbons but because of this pi bond here , this pi bond is going to prevent rotations so we do n't get different confirmations of the ethylene molecules . no free rotation due to the pi bonds . when you 're ... | why would there be such a thing as pi bonds ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | now , remember when you are dealing with boron , it has one last valance electron and carbon . carbon have four valance electrons . boron has only three . | why 2 electrons was not filled in 2s for full and then fill in 2p ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | steric number of three tells us this boron is sp2 hybridized . this boron is gon na have three sp2 hybrid orbitals and one p orbital . one unhybridized p orbital . let 's go ahead and draw that . | jay tell us that boron has one unhybridised p orbital.how does he know that ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | when you 're thinking about the sp2 hybrid orbitals that you create . sp2 hybrid orbital , sp2 , sp2 and then one unhybridized p orbital right here . boron only has three valance electrons . let 's go ahead and put in those valance electrons . one , two and three . | but the sp2 hybrid orbital have only 3 electrons and hence will they be able to gain 3 more electrons ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | this carbon right here is sp2 hybridized and same with this carbon . notice that we left a p orbital untouched . we have a p orbital unhybridized like that . | here what the left out p orbital does which is left unhybridised in ethene or ethylene ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | when we 're looking at the example of ethane , we have free rotation about the sigma bond that connected the two carbons but because of this pi bond here , this pi bond is going to prevent rotations so we do n't get different confirmations of the ethylene molecules . no free rotation due to the pi bonds . when you 're ... | is there only one pi bond , or would that be showing two pi bonds ( one for each overlap ) ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | remember for ethane , the distance was approximately 1.54 angstroms . a double bond is shorter than a single bond . one way to think about that is the increased s character . | what happened to the double bond of the carbons in the structure ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | over here when we look at the picture , this has an empty orbital and so boron can accept a pair of electrons . we 're thinking about its chemical behavior , one of the things that bf3 can do , the boron can accept an electron pair and function as a lewis acid . that 's one way in thinking about how hybridizational all... | what is a `` lewis acid '' ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | now , remember when you are dealing with boron , it has one last valance electron and carbon . carbon have four valance electrons . boron has only three . | i get that carbon can make four bonds in total , but why ca n't each carbon just make bonds with three other atoms and keep an unshared pair of electrons ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let 's do boron trifluoride . bf3 . if you wan na draw the dot structure of bf3 , you would have boron and then you would surround it with your flourines here and you would have an octet of electrons around each flourine . | for bf3 , why does b not have 4 single bonds ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | that 's one , two , three . three sigma bonds plus lone pairs of electrons . that 's zero . | does n't it have to obey the octet rule and add a lone pair of electrons to it ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | we can go ahead and draw in an sp2 hybrid orbital and there 's one electron in that orbital and then there 's another one with one electron and then here 's another one with one electron . this carbon being sp2 hybridized also has an unhybridized p orbital with one electron . go ahead and draw in that p orbital with it... | while bonding for example in carbon the electron excites from where the energy comes to excite the electron ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | carbon have four valance electrons . boron has only three . when you 're thinking about the sp2 hybrid orbitals that you create . | why does n't boron bonds with 4 flourines to gain its octet rather than bonding with 3 f ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | this boron is gon na have three sp2 hybrid orbitals and one p orbital . one unhybridized p orbital . let 's go ahead and draw that . | so , like the bf3 which used its empty p-orbitals to accept an electron pair to be lewis acid , will the c2h4 uses its half-filled unhybridized p-orbital to accept one electron and acts as lewis acid ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | find the hybridization of this boron . steric number is equal to number of sigma bonds . that 's one , two , three . | do we only count sigma bonds to calculate the steric number ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | when you 're looking at the dot structure , one of these bonds is the pi bonds , i 'm just gon na say it 's this one right here . if you have a double bond , one of those bonds , the sigma bond and one of those bonds is a pi bond . we have a total of one pi bond in the ethylene molecule . | what does make the atom form a pi bond ... ... not all bonds are sigma ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let me go ahead and draw the dot structure right here again so we can take a look at it . the dot structure for ethylene . let 's do the other carbon now . | is ethylene an other name for ethene ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let me go ahead and write that over here . there are five sigma bonds . if i would try to find those on my dot structure this would be a sigma bond . | in c2h4 , are the sigma bonds ionic bonds and the pi bonds covalent ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | this boron is gon na have three sp2 hybrid orbitals and one p orbital . one unhybridized p orbital . let 's go ahead and draw that . | what happens to the third p orbital ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | this is an sp2 hybrid orbital and same with this one , an sp2 hybrid orbital . we call this sp2 hybridization . let me go and write this up here . | what is the difference between sp2 and sp3 hybridization ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | a hydrogen , a hydrogen and a carbon and so we must need a different hybridization for each of the carbon 's presence in the ethylene molecule . we 're gon na start with our electron configurations over here , the excited stage . we have carbons four , valence electron represented . one , two , three and four . | what is an electron density ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | if my goal was to find the steric number for this carbon . i count up my number of sigma bonds . that 's one , two and then i know when i double bond one of those is sigma and one of those is pi . one of those is a sigma bond . a total of three sigma bonds . i have zero loan pairs of electrons around that carbon . | why does n't carbon form 2 sigma bonds instead of one sigma and one pi ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let 's go ahead and draw that . we have a carbon right here and this is an sp2 hybridized orbitals . we 're gon na draw in . | why do n't all the 4 orbitals become hybridized like in methane even though carbon still forms 4 bonds in both methane and ethene ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let 's go ahead and put in those valance electrons . one , two and three . it does n't have any electrons in its unhybridized p orbital . | 7 , why does n't one of the two carbons in the ethylene compound spin around so that the two electrons in the unhybridized orbitals are farther from each other ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | this is an sp2 hybrid orbital and same with this one , an sp2 hybrid orbital . we call this sp2 hybridization . let me go and write this up here . | will all tetrahedral shapes have a hybridization of sp3 , trigonal planar of sp2 , and linear of sp1 ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | this boron is gon na have three sp2 hybrid orbitals and one p orbital . one unhybridized p orbital . let 's go ahead and draw that . | how does i unhybridiesedp orbital efect the molecule as whole ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | that 's one , two , three . three sigma bonds plus lone pairs of electrons . that 's zero . steric number of three tells us this boron is sp2 hybridized . | why the number of lone pairs are taken as zero ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let me go ahead and write that over here . there are five sigma bonds . if i would try to find those on my dot structure this would be a sigma bond . | however , when it bonds with flourine , what shape will flourine have ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | that 's zero . steric number of three tells us this boron is sp2 hybridized . this boron is gon na have three sp2 hybrid orbitals and one p orbital . one unhybridized p orbital . | will it just have one of the three regular 'p ' shaped orbitals bonding to boron 's sp2 hybrid orbitals , or will flourine also become hybridized and have sp3 orbitals bonding to boron 's sp2 orbitals ( based on steric number i.e the 3 lone pairs+ 1 sigma bond ) ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | that carbon is sp2 hybridized and of course , this one is too . both of them are sp2 hybridized . let 's do another example . | does only the least electronegative atom get hybridized ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | the carbon carbon bond , here 's also a head on overlap of orbitals and then we have these two over here . we have a total of five sigma bonds in our molecules . let me go ahead and write that over here . | why do water molecules and ammonia molecules need hybridization ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | what is the hybridization stage of this boron ? let 's use the concept of steric number . once again , let 's use steric number . find the hybridization of this boron . | can we calculate steric no for coordination compounds ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | this is no longer an s orbital . this is an sp2 hybrid orbital . this is no longer a p orbital . | what makes a hybrid orbital ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | when we 're looking at the example of ethane , we have free rotation about the sigma bond that connected the two carbons but because of this pi bond here , this pi bond is going to prevent rotations so we do n't get different confirmations of the ethylene molecules . no free rotation due to the pi bonds . when you 're ... | how does the pi bond contribute to no free rotation ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | : in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . | how do we calculate angstorms ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | here 's the head on overlap of orbitals . that 's a sigma bond . here 's another head on overlap of orbitals . | and does s stand for sigma bond and p for pi bond ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | now , remember when you are dealing with boron , it has one last valance electron and carbon . carbon have four valance electrons . boron has only three . | how can i know wether a molecule will accept electrons or donate electrons ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | once again , when we draw the pictures , we 're going to ignore the smaller back lobe . this gives us our sp2 hybrid orbitals . in terms of what percentage character , we have three orbitals that we 're taking here and one of them is an s orbital . | what 's the difference between sp3 hybrid orbitals and sp2 hybrid orbitals ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let 's do boron trifluoride . bf3 . if you wan na draw the dot structure of bf3 , you would have boron and then you would surround it with your flourines here and you would have an octet of electrons around each flourine . | why doesnt the element other than the central element like f in bf3 also get hybridized ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | that carbon is sp2 hybridized and of course , this one is too . both of them are sp2 hybridized . let 's do another example . | why does only the central atom geta hybridized ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let 's do boron trifluoride . bf3 . if you wan na draw the dot structure of bf3 , you would have boron and then you would surround it with your flourines here and you would have an octet of electrons around each flourine . | in the bf3 example , are the fluorine 's orbitals hybridized ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | and use a different color here . this is sp2 hybridization because we 're using one s orbital and two p orbitals to form our new hybrid orbitals . this carbon right here is sp2 hybridized and same with this carbon . | when do orbitals hybridize and when not ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let me go ahead and draw the dot structure right here again so we can take a look at it . the dot structure for ethylene . let 's do the other carbon now . | is there a difference between ethene and ethylene ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | the geometry of the atoms around this carbon happens to be planar . actually , this entire molecule is planar . you could think about all this in a plane here . | how do scientists predict the 3d configuration of the entire molecule ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let 's do boron trifluoride . bf3 . if you wan na draw the dot structure of bf3 , you would have boron and then you would surround it with your flourines here and you would have an octet of electrons around each flourine . | onwards structure of bf3 is explained , we see that fluorine has a steric number of 4 does that mean fluorine is sp3 hybridized ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | let 's do boron trifluoride . bf3 . if you wan na draw the dot structure of bf3 , you would have boron and then you would surround it with your flourines here and you would have an octet of electrons around each flourine . | is bf3 an exception to octet rule since b has only 6 electrons in bf3 ? |
: in an earlier video , we saw that when carbon is bonded to four atoms , we have an sp3 hybridization with a tetrahedral geometry and an ideal bonding over 109.5 degrees . if you look at one of the carbons in ethenes , let 's say this carbon right here , we do n't see the same geometry . the geometry of the atoms aro... | now , remember when you are dealing with boron , it has one last valance electron and carbon . carbon have four valance electrons . boron has only three . | despite originally having space in its 2p^2 orbitals for 2 electrons of opposite spin ? |
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