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What mass of helium is in a 2.00L ballon at STP

What mass of helium is in a 2.00L ballon at STP
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What mass of helium is in a 2.00L ballon at STP

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User JYelton
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1 Answer

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Answer:

0.357 g He

Step-by-step explanation:

1 mol of gas at STP = 22.4 L

2.00 L * 1 mol/22.4 L = 0.08929 mol He

M(He) = 4.00 g/mol

0.08929 mol He * 4.00 g/ 1 mol He = 0.357 g He

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User Alex Pritchard
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