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Q.

A sample of impure air contains 80% N2 , 10% O2 , 5% CO2 and 5% Ar by volume. The average molecular weight of the sample is: [Ar= 40]

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An Intiative by Sri Chaitanya

a

29.8

b

none of these

c

29.4

d

30.0

answer is B.

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Detailed Solution

The average molecular shape can be calculated as;

80×28+10×32+5×44+5×40100=29.8

 

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