At 30℃ and 720mm of hg, the density of a gas is 1.5g/lt.calculate molecular mass of the gas. Also find the no. of molecules in 1cc of the gas at the same temperature
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The molecular weight should be 32.032 gms.
Because if 1.43 gms of gas is present in a volume of 1 litre, then 32.032 gms (Since 1.43 x 22.4 = 32.032) of gas should be present in volume of 22.4 litre.
1 mole of a gas is 22.4 litres. Hence 1 mole of gas contains 32.032 gms. Which means 32.032gms is molecular weight of the gas.
Because if 1.43 gms of gas is present in a volume of 1 litre, then 32.032 gms (Since 1.43 x 22.4 = 32.032) of gas should be present in volume of 22.4 litre.
1 mole of a gas is 22.4 litres. Hence 1 mole of gas contains 32.032 gms. Which means 32.032gms is molecular weight of the gas.
angelbisla5:
Ah why u used 1.43 instead of 1.5
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