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3 April, 12:52

A gas has a volume of 10.0 liters at 373K and a pressure of 5.0atm, what volume will the gas occupy at STP?

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  1. 3 April, 12:59
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    Use ideal gas law PV=nRT

    Convert 5.00 atm to kPa since units must be relative to gas constant (r).

    To do this multiply 5 by 101.03 (1 atm=101.3kPa)

    Now plug in (506.5kPa) (10.0L) = n (8.31 L•atm/mol•K) (373K)

    Solve for n (moles) to get approximately 1.634 mol. Now use dimensional analysis (1.634mol/1) (22.4L/1mol) = 36.6L
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