Question

The number of molecules of oxygen in 1L of air 21% of oxygen by volume at STP would be

Answer 1

Answer:

55.8 x1020

Explanation:

21 percent in one litre =210 ml

Moles = 210/22400 =9.3 X 10-3

Molecules=mole X 6.022x 10 23

9.3x 10-3x 6.022X10 23