Question

No.of hydrogen atom in 4gm of methane gas is the same as that in

Answer 1

Molecular weight of hydrogen is 2 and in one hydrogen molecule 2 atoms of hydrogen are present. Hence, no. of atoms present in 4g of H

2

=4/2×2Na=4Na (1)

One molecule of methane contains 4 atoms of Hydrogen. Let amount of methane be

′

x

′

g. Hence, no. of atoms present in

′

x

′

g of CH

4

=x/16×4.Na=x/4.Na (2)

Hence, x/4.Na=4Na (from 1 and 2)

x=16g