Question

The composition of dry air is approximately 78% nitrogen, 21% oxygen, and 1% other gases. What is the partial pressure of nitrogen at standard atmospheric pressure?

Answer 1

Well approx. `4/5*atm`.........

Explanation:

So partial pressures of the constituent gases are.......

`P_(N_2)=0.78xx1*atm`; `P_(O_2)=0.21xx1*atm`; and `P_("other gases")=0.01xx1*atm`.

Does the sum of the partial pressures add up to `P_"atmospheric"`? Why should it?