Chem help

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slayerdeus

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  1. Pre-Dental
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A collapsed balloon and its load weighs 216 kg. To what volume should it be inflated with H2 gas in order to launch it from a mountain top at -12°C and 628 torr? The density of air under these conditions is 1.11 g/L.

It's an ideal gas and kinetic theory problem. Help please I'm soo stuck!
 
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