Amixture of noble gases [helium (mw 4), argon (mw 40), krypton (mw 83.8), and xenon (mw 131.3)] is at a total pressure of 150 kpa, and a temperature of 500 k. the mixture has the following composition in mole fraction: 0.25 helium, 0.25 argon, 0.25 krypton. determine: (a) the mass fraction of helium. (b) the average molecular weight of the mixture. (c) the total molar concentration. (d) the mass density.
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How many moles of gas are present if p=11 atm, v=12l, t=185k?
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Carbon-14 undergoes radioactive decay in the reaction above. determine the type of radiation emitted in this reaction and describe what is happening to the nucleus during this reaction.
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Pl what kind of reaction is this? nahco3 + h2o → co2 + naoh + h2o -composition -decomposition -single replacement -double replacement im leaning more toward single replacement. if im wrong can you explain whyy?
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Amixture of noble gases [helium (mw 4), argon (mw 40), krypton (mw 83.8), and xenon (mw 131.3)] is a...
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