# A canister contains 25 kPa of #CO_2#, 7.50 kPa of #N_2#, and 52.5 kPa of #O_2#. What is the total pressure within the canister?

##### 1 Answer

Aug 7, 2017

This is simply the sum of the individual partial pressures...........and you can do the sum in your head.......to get

#### Explanation:

And this follows Dalton's law of partial pressures.....

This is an experimental gas law that has copious experimental support.

ANd thus

I think you can see from where the examiner pulled those figures.