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22 January, 13:35

Under which conditions does the molar volume of a gas decrease? A. at 273 K and at 2.0 atm. B. at 273 K and at 0.5 atm. C. at 409.5 K and at 1.0 atm. D. at 546 K and at 2.0 atm

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  1. 22 January, 14:14
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    We first assume that this gas is an ideal gas and we use the ideal gas equation to determine the answer. It is expressed as:

    PV = nRT

    Molar volume can be obtained from the equation by V/n.

    V/n = RT/P

    Therefore, the correct answer from the choices listed above is option A, at 273 K and at 2.0 atm.
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