# How many moles of O2 are there in 2500g of O2?

Jul 2, 2014

Mole is a number that connects mass of a substance with its number of particles.

1 mole of a substance = 6.02 x ${10}^{23}$ particles (entities)

1 mole of Dioxygen or ${O}_{2}$ = 6.02 x ${10}^{23}$ molecules of ${O}_{2}$

1 mole of ${O}_{2}$ has mass 32 g

we can say that

32 g of ${O}_{2}$ = 1 mole

1g of ${O}_{2}$ = 1/32 mole

2500 g of ${O}_{2}$ = 1/32 x 2500 = 78.125 moles.