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8.2 L of an ideal gas weights 9.0 g at 3...

8.2 L of an ideal gas weights 9.0 g at 300 K and 1 atm pressure. The molecular mass of the gas is

A

9

B

27

C

54

D

81

Text Solution

Verified by Experts

The correct Answer is:
B
Apply `n = (PV)/(RT) " or " (9)/(M) = (PV)/(RT)`
`(1 xx 8.2)/(0.082 xx 300) = (9)/(M) " or " M = (9)/(1//3) = 27`
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