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Posted by on Thursday, June 20, 2013 at 11:05pm.

120 ml of a gas is in a flask at STP. If the gas is argon, what mass of gas is in the flask?

  • Chemistry H - , Thursday, June 20, 2013 at 11:08pm

    PV = nRT and solve for n = number of mols.
    Then n = grams/molar mass. You have n and molar mass, solve for grams.

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