1.

A liquid mixture composed of 20% CHâ‚„, 30% Câ‚‚Hâ‚„, 35% Câ‚‚Hâ‚‚, and 15% Câ‚‚Hâ‚‚O. What is the average molecular weight of the mixture?

A. 20
B. 25
C. 6.75
D. 9.25
Answer» C. 6.75


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