(1) A gas is contained in a tank at T°C and P kPa, and the volume of the tank is V m3
. Calculate the mass of the gas (in kg) assuming that the gas is a perfect gas and that its molecular weight is MWkg/kmol. The universal gas constant is 8.314 J/(K·mol). Round your answer to the nearest tenth (for example, 10.12 becomes 10.1)

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