answer stringlengths 1 239 ⌀ | question stringlengths 1 25.7k |
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1 | How many binary aluminum hydrides are there? |
inorganic chemistry | What chemistry do hydrides serve as bridging ligands? |
link two metal centers | What do hydrides that are bridging ligands link up? |
group 13 | What group is briging ligands most common in? |
electrons | When hydrogen oxidates, what is it removing? |
H+ | When hydrogen oxidates, what does it end up giving? |
Bronsted-Lowry | What theory suggests that acids are proton donors? |
H+ | What is another term for a bare proton? |
in acidic solution with other solvents | Where can oxonium ions be found? |
hydronium ion | What other term is a solvated protons referred as? |
protonated | What kind of molecular hydrogen is the H+3 knows as? |
trihydrogen cation | What kind of cation is the H+3 knowns as? |
3H | How many natural isotopes does hydrogen have> |
denoted 1H, 2H and 3H | What are the names of these isotopes? |
4H to 7H | Which isotopes have unstable nuclei? |
Hydrogen | Which element is the only that has different names for its isotopes? |
deuterium and tritium | What are the only two names still used for radioactive isotopes? |
D and T | What are the symbols used for deuterium and tritium? |
phosphorus | What does the symbol P represent? |
2H and 3H | What are the preferred symbols for deuterium and tritium? |
1671 | What year was the discovery of hydrogen gas? |
Robert Boyle | Who discovered Hydrogen gas? |
Henry Cavendish | Who recognized hydrogen gas as a discreet substance? |
1766 | In what year did Henry Cavendish recognize hydrogen gas as a discreet substance? |
water | What does gas produce when burned? |
reacting a flux of steam with metallic iron through an incandescent iron tube heated in a fire | How did Lavoisier produce hydrogen for his experiments? |
James Dewar | Who was the first to liquidize hydrogen? |
1898 | In what year Did James Dewar first liquidize hydrogen? |
1931 | What year was Deuterium discovered? |
Harold Urey | Who was the first to discover deuterium? |
1934 | What year was tritium discovered? |
Jacques Charles | Who invented the hydrogen filled balloons? |
1783 | What year was hydrogen filled balloons invented? |
Zeppelins | what were the hydrogen lifted airships called? |
1900 | In what year did the first zeppelin make flight? |
the British | Who made the first non stop transatlantic crossing? |
1919 | What year was this done? |
1937 | What year did the airship get destroyed? |
New Jersey | What city was the ship over when it caught fire? |
1937 | In what year did the first hydrogen cooled turbogenerator go into service? |
Ohio | What state is the Dayton Power and light Company located? |
1977 | What year was the first nickel hydrogen battery used? |
2009 | In what year did the hubble space telescope finally get the nickel hydrogen battery? |
a proton and an electron | What is the hydrogen atom made up of? |
atomic structure | What theory is the hydrogen atom a big part of? |
1920s | When was the quantum mechanical treatment of the hydrogen atom developed? |
Maxwell | Who observed the specific heat capacity of H2? |
spacing of the (quantized) rotational energy levels | What cause H2 to resemble monatomic gas? |
quantum theory | What theory supports this? |
75% | What percent of normal matter is hydrogen? |
90% | What percent of atoms is hydrogen? |
dark matter and dark energy | What 2 forms of mass is most of the universe consisted of? |
stars | Clouds of H2 form what? |
atomic and plasma | In what states is hydrogen mostly found in the universe? |
plasma | Hydrogens electron and proton are not bound together in what state? |
neutral atomic state | in the interstellar medium, what state is hydrogen in? |
cosmological baryonic density of the Universe | The neutral hydrogen found in the damped Lyman-alpha systems dominates what? |
third most abundant | How abundant is hydrogen on the earths surface? |
bacteria and algae | what produces hydrogen gas? |
protonated molecular hydrogen | What molecular form is found in the interstellar medium? |
ionization of molecular hydrogen from cosmic rays | What generates protonated molecular hydrogen? |
Jupiter | On what planet can you find protonated molecular hydrogen? |
excited form | In what way can Neutral triatomic hydrogen exist? |
expelling reducing equivalents in biochemical reactions | How does nature produce H2? |
by-product of other reactions | How do labs produce H2? |
electrolysis of water | What is an easy way to produce hydrogen? |
anode | Where does the gaseous oxygen form at? |
cathode | Where does the gaseous hydrogen form at? |
hydrogen | When you combine an alloy of alluminum and gallium to water, what do you get? |
alumina | What else can it produce? |
the expensive gallium | What can be reused after the formation? |
hydrocarbons | The most economical way to prepare hydrogen involves removing it from what? |
1000–1400 K, 700–1100 °C or 1300–2000 °F | What temperature is needed for steam to react with methane? |
high pressures | At what pressure does PSA work best in? |
production of methanol | What is synthesis gas used for? |
Hydrocarbons | Besides methane, what else can be used to produce synthesis gas? |
use of carbon monoxide through the water gas shift reaction | How can it be recovered through steam? |
ammonia | When hydrogen is generated from natural gas, what des it produce? |
Electrolysis of brine to yield chlorine | How is hydrogen produced as a co product? |
produce hydrogen and oxygen from water and heat without using electricity | What are the thermochemical cycyles in a testing phase for? |
solar energy and water | What are labs trying to produce hydrogen from? |
France, Germany, Greece, Japan, and the USA | What countries are testing this? |
anaerobic | What condition is iron and steel alloys slowly oxidized? |
formation of ferrous hydroxide | What does the anaerobic corrosion of iron lead to? |
green rust | What is another name for formation of ferrous hydroxide? |
anaerobic | Under what condition can ferrous hydroxide be oxidized? |
magnetite and molecular hydrogen | What does this process form? |
Schikorr reaction | What reaction describes this process? |
serpentinization by the anaerobic oxidation | How is hydrogen produced when there is no atmospheric oxygen? |
crystal lattice of the fayalite | Where do you find silicate? |
hydrogen | What is the most common gas found in power tranformers? |
petroleum and chemical industries | Where are large quantities of H2 needed? |
hydrodealkylation, hydrodesulfurization, and hydrocracking | What are the consumers of H2 in petrochemical plant? |
rare earth and transition metals | Where is hydrogen highly soluble? |
nanocrystalline and amorphous metals | Where can you find soluble hydrogen? |
local distortions or impurities in the crystal lattice | What influences hydrogens solubility in metals? |
when hydrogen is purified by passage through hot palladium disks | When are these useful? |
gas's high solubility is a metallurgical problem, contributing to the embrittlement of many metals, complicating the design of pipelines and storage tanks | When is it damaging? |
in physics and engineering | Where else is H2 applied? |
as the rotor coolant | How is H2 used in electrical generators at power stations? |
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