ex: A sample of H??? gas occupies a volume of 8.56 L at a temperature of 0°C and a pressure of 1.5 atm. How many moles of hydrogen are present?
________
answer:
??? PV = nRT ??? n = PV / RT
??? n = (1.5 atm) (8.56 L) / (0.0821 L.atm/K.mol) (273 K)
??? n = 0.57 mol H???
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