The quantity of N

Given: percentage of gases in air,

Nitrogen: 75.6%

Oxygen: 23.04%

Carbon dioxide: 1.36%

Tip: If x% of substance is present in a given quantity of y,

then the amount of substance present in y=

From the Question, we already know the percentage of the respective gases,

Therefore, by using the tip given, we can easily find out the required answer.

(Note that the percentage of the respective gases given in air does not change upon the quantity of air in which their amount has to be calculated.)

Amount of Nitrogen gas present

=18.9 ltr.

Amount of Oxygen gas present

=5.76 ltr.

Amount of Carbon dioxide present

=0.34 ltr.