Question

Find
the number of moles
12g of
nitrogen g
as (N=14,
C =12,0:16​

Answer 1

Nitrogen gas exists as N₂ molecule(with mass 28g)

So,28 g=1 mol Nitrogen gas

     1 g will contain 1÷28 mol

     12 g will have 12÷28 mol,i.e.,0.4 mol of Nitrogen gas