Question

The density of gas is 1.56 g/l at 745 mn Hg at 65° C. Calculate the molecular mass of the gas.
Hint - 1 atm=760 mn Hg

Please show step by step explanation ​

Answer 1

Answer:

Pressure is p=745mm=0.98atm (1 atm = 760 mm Hg)

Temperature is T=65

0

C=65+273=338K

density is d=1.56g/L

P=

M

dRT

where M is molecular wt.

⟹M=

P

dRT

⟹M=

0.98

1.56×338×0.0821

=44.2u

Hence, the molecular mass of the gas is 44.2u.

Explanation:

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