Can you help me with Chemistry? Part 3?

Question

A sample of gas is collected over water at a temperature of 35.0 degrees Celsius when the barometric pressure reading is 742.0 torr. What is the partial pressure of the dry gas?
(Please show work)

Answer 1

You will need to find the water vapor pressure at 35 degrees Celsius from a table in your text. Subtract the answer from the total pressure of the system (742 torr).