What is the partial pressure of water vapor in an air sample when the total pressure is 1.00 atm, the partial pressure of nitrogen is 0.79 atm, the partial pressure of oxygen is 0.20 atm, and the partial pressure of all other gases is 0.0044 atm?

Partial pressure of water vapor = 0.0056 atm

Explanation:

Given that

Total pressure = 1 atm

Partial pressure of nitrogen = 0.79 atm

Partial pressure of oxygen = 0.2 atm

Partial pressure of other gases = 0.0044 atm

We know that

Total pressure = Sum of partial pressure of all gases.

Total pressure = Partial pressure of nitrogen + Partial pressure of oxygen + Partial pressure of other gases + Partial pressure of water vapor

So now by putting the values

1 = 0.79 + 0.2 + 0.0044 + Partial pressure of water vapor

Partial pressure of water vapor = 0.0056 atm