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What is the kinetic energy (in ergs) of the nitrogen molecule at -73°C?

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Important Questions on States of Matter : Gases and Liquids

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10 litre cylinder contains equal volumes of H2 and He. If the mixture is allowed to diffuse from an opening, estimate the percent composition of the output gas. (Assume ideal behaviour of gas mixture)
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The van der Waals constant 'a' is the measure of intermolecular force of attraction in a gas. The correct decreasing order of 'a' for the given set of molecules is
HARD
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Suppose that, 300 gm of C2H6(g) is confined in a 5 L container at 27oC. Calculate the pressure exerted by ethane from van der Waals equation of state?
a=5.0d m6 atm mol-2, b=0.09 dm3 mol-1
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Which one of the following plots is correct for the behaviour of ideal and real gases?
EASY
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Among the following gases, the order of liquefiability is
a) SO2
b) CO2
c) CH4
d) NH3

EASY
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The compressibility factor (Z) of a gas is <1 at STP. Therefore
MEDIUM
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Which of the following options correctly represents the relations of compressibility factor (z) and van der Waals equation for 1 mole of gas at low pressure?
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The units of surface tension and viscosity of a liquid, respectively, are