M g of a substance when vaporised occupy a volume of 5.6 litres of NTP. The molecular mass of the substance will be
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Explanation:
at NTP
no. of mole = volume at NTP / 22.4 litre
mass / molarmass = 5.6 / 22.4
M / molarmass = 0.25
molar mass = M / 0.25 your answer
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