Question

no. Of moles of nitrogen atom in 56g nitrogen gas

Answer 1

Wt of N2 gas is 28g
No of moles = given mass/actual mass
No of moles=56g/28g
=2 nos

Answer 2

To find out the number of moles of nitrogen atom in 56g nitrogen gas we need to know the molecular mass of Nitrogen which is = 14g

Therefore there are $\frac{56}{14}$ moles of nitrogen atom in 56g of nitrogen gas.

Number of moles in Nitrogen atom $=\frac{56}{14}$.

Nitrogen is a colourless and odourless gas with an atomic number of 7 and somewhat lighter than air. It is non-combustible and non-supporter of combustion and counters the combustion supporting property of non-combustible oxygen.