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Since the atmosphere of the Earth has a mass of about 5.14 × 10 18 kilograms (1.133 × 10 19 lb), [24] the mass of 3 He in the Earth's atmosphere is the product of these numbers, or about 37,000 tonnes (36,000 long tons; 41,000 short tons) of 3 He. (In fact the effective figure is ten times smaller, since the above ppm are ppmv and not ppmw.
Liquid helium is a physical state of helium at very low temperatures at standard atmospheric pressures.Liquid helium may show superfluidity.. At standard pressure, the chemical element helium exists in a liquid form only at the extremely low temperature of −269 °C (−452.20 °F; 4.15 K).
1 H + 1 H → 2 H + e + + ν e 0.42 MeV. The hypothetical effect of a bound diproton on Big Bang and stellar nucleosynthesis , has been investigated. [ 18 ] Some models suggest that variations in the strong force allowing a bound diproton would enable the conversion of all primordial hydrogen to helium in the Big Bang, which would be ...
0.8–2.1 × 10 12 kg Global biomass of fish [114] 4 × 10 12 kg Global annual human food production [115] 4 × 10 12 kg World crude oil production in 2009 (3,843 Mt) [116] 5.5 × 10 12 kg A teaspoon (5 ml) of neutron star material (5000 million tonnes) [117] 10 13: 1 × 10 13 kg Mass of comet 67P/Churyumov–Gerasimenko [118] 4 × 10 13 kg
WASHINGTON (Reuters) -President-elect Donald Trump cannot ignore a law requiring Chinese-based ByteDance to divest its popular short video app TikTok in the U.S. by early next year or face a ban ...
1. Tennessee Titans – Cam Ward, QB, Miami (Fla.) With Ward, Tennessee might actually get what it hoped it would find in Will Levis: a dynamic thrower who can attack every level of the field.
The ideal gas equation can be rearranged to give an expression for the molar volume of an ideal gas: = = Hence, for a given temperature and pressure, the molar volume is the same for all ideal gases and is based on the gas constant: R = 8.314 462 618 153 24 m 3 ⋅Pa⋅K −1 ⋅mol −1, or about 8.205 736 608 095 96 × 10 −5 m 3 ⋅atm⋅K ...
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