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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 | |