What number of moles of hydrogen gas are in a 330 mL sample collected over water if the temperature is 27 ° C (vapor pressure of water at 27 ° C is 27 torr) and the atmospheric pressure is 755 torr?
A) 1.33×10 - 2 mol
B) 1.01×10 - 2 mol
C) 2.11×10 - 2 mol
D) 1.28×10 - 2 mol
E) none of these
Correct Answer:
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