7. Gases
Partial Pressure
Multiple Choice
Multiple ChoiceIn the reaction of calcium metal and water, 50.0 mL of hydrogen gas is collected over water at 25.0℃ with a total pressure of 752 mmHg. Calculate the number of moles of hydrogen gas that was produced.
A
1.96 × 10–3 mol
B
2.02 × 10–3 mol
C
1.96 mol
D
1.49 mol
E
1.49 × 103 mol
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