Blast furnaces give off many unpleasant and unhealthy gases. If the total air
pressure is 0.99 atm, the partial pressure of carbon dioxide is 0.05
atm, and the partial pressure of hydrogen sulfide is 0.02 atm, what is
the partial pressure of the remaining air?

The partial pressure of the remaining air is 0,92 atm.

Explanation:

We apply Dalton's law: the total pressure of a gaseous mixture (in this case air) is equal to the sum of the partial pressures of the gases that make up that mixture:

P total = P C02 + P H2S + P remaining air

P remaining air= P total - P C02 - P H2S= 0,99 atm -0,05 atm -0,02 atm=

P remaining air= 0,92 atm