Answer
C
Work Step by Step
If they are in stoichiometric proportions:
$P_{O_2}=\frac{5}{2+5}×140\ mmHg=100\ mmHg$
$P_{C_2H_2}=\frac{2}{2+5}×140\ mmHg=40\ mmHg$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.