The density of the vapour of a substance at 1 atm pressureand 500 K is 0.36 kg m. The vapour effuses through asmall hole at a rate of 1.33 times faster than oxygen underthe same condition.(a) Determine, (i) molecular weight (ii) molar volume(iii) compression factor (z) of the vapour and (iv) whichforces among the gas molecules are dominating, theattractive or the repulsive?(b) If the vapour behaves ideally at 1000 K, determine theaverage translational kinetic energy of a molecule.

The density of the vapour of a substance at 1 atm pressureand 500 K is

1.	The density of the vapour of a substance at 1 atm pressureand 500 K is 0.36 kg m. The vapour effuses through asmall hole at a rate of 1.33 times faster than oxygen underthe same condition.(a) Determine, (i) molecular weight (ii) molar volume(iii) compression factor (z) of the vapour and (iv) whichforces among the gas molecules are dominating, theattractive or the repulsive?(b) If the vapour behaves ideally at 1000 K, determine theaverage translational kinetic energy of a molecule.
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