In a sample of air at STP, the partial pressure of nitrogen gas is PN, = 0.78 atm and the partial pressure of argon gas is Par = 0:01 atm. Calculate the partial pressure of oxygen gas Po, at STP.
Ignore units and use the proper amount of significant figures.

0.21 atm

Explanation:

Step 1: Given data

Step 2: Calculate the partial pressure of oxygen

The air is a gaseous mixture formed mainly by nitrogen, oxygen and argon. The total pressure is equal to the sum of the partial pressures of the gases.

P = pN₂ + pAr + pO₂

pO₂ = P - pN₂ - pAr

pO₂ = 1 atm - 0.78 atm - 0.01 atm

pO₂ = 0.21 atm

answer; /// the amount of material dissolved in a measure of liquid(concentration) the above statement is (true); /// good luck