Unformatted text preview: 2 Does this answer make sense? According to the balanced equation, you need three times as much H 2 as N 2 . Since you started with 100L N 2, you would need 300L H 2 to fully react. And since the same volume of any two gases at the same T and P contain the same number of molecules, it makes sense that you need thrice the volume of nitrogen. Remember that 1 mol of gas at STP = 22.4L. If you forget this, you can always plug in the standard temperature and pressure conditions (273K, and 1atm) into the ideal gas equation(PV = nRT)....
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 Fall '08
 Herron,S

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