Chemical Engineering - Stoichiometry - Discussion

37. 

Average molecular weight of air is about

[A]. 21
[B]. 29
[C]. 23
[D]. 79

Answer: Option B

Explanation:

No answer description available for this question.

Vimal Lawaniya said: (Mar 12, 2017)  
How it can be?

Explain

Hanadi said: (Jun 28, 2017)  
M= mi*yi.
M = MO2 * YO2 + MN2 * YN2.
yo2=21/21+79=.21,
yn2=79/79+21=.79,
mwt o2=2*16=32,
mwt n2=2*14=28,
M = YO2*MO2+YN2*MN2,
M = .21*32+.79*28,
M = 29.

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