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What is the mass of a 167.8 L (at STP) sample of helium gas ?
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What is the mass of a 167.8 L (at STP) sample of helium gas ?

User Andrew Luo
by
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1 Answer

8 votes

1 mole at STP = 22.4 L

167.8 : 22.4 = 7.49 mole

mass = mole x Ar He

mass = 7.49 x 4 g/mol = 29.96 g

User Didier
by
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