# Chapter 10 Gases and Their Properties - 10-5 Gas Mixtures and Partial Pressures - Review & Check for Section 10-5 - Page 390: 1

C

#### Work Step by Step

If they are in stoichiometric proportions: $P_{O_2}=\frac{5}{2+5}×140\ mmHg=100\ mmHg$ $P_{C_2H_2}=\frac{2}{2+5}×140\ mmHg=40\ mmHg$

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