Question

Mass in 2 gm atom of nitrogen?

Answer 1

1 gram molecule of nitrogen means 1 mole of N2

So, no.of moles of N2 = 2 mole (given)

We know that mole= weight /molecular weight…(1)

Molecular weight of N2 = 28g/mole

Now, from eq 1

2 mole= weight/28g/mole

Weight= 56g ans

Answer 2

1 gram atom of nitrogen contains 28 g
2grams will contain
2×28=56gram