What mass of helium gas is needed to pressurize a 120.0 L tank to 266 atm at 25°C???HELP!
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What mass of helium gas is needed to pressurize a 120.0 L tank to 266 atm at 25°C???HELP!

[From: ] [author: ] [Date: 12-03-23] [Hit: ]
-What mass of helium gas is needed to pressurize a 120.0 L tank to 266 atm at 25°C???HELP!?......
I'm so confused I have no idea what to do. None of the measurments are the same!!

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What mass of helium gas is needed to pressurize a 120.0 L tank to 266 atm at 25°C???HELP!?
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120 liters/22.4 liters/mole = 5.36 moles at STO.

But we have 226 atm, so that's 226 x 5.36 = 1211.4 moles.

One final correction: 273/(273+25) x 1211.4 = 1109.8 moles, or 4439.2 grams He.

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