Question

kample 1.12 Calculate the number of atoms in
(i) 1 mole of nitrogen (N2)​

Answer 1

Explanation:

(i) 0.05 g of water

(ii) 1 mole of nitrogen contains 6.02×1023

molecules i.e. two mole atoms are 1.2046×1024 atoms of nitrogen.

(iii) 18 g of water contains 1 mole of molecules or 3 mole atoms (2 mole atoms of hydrogen and 1 mole atoms of oxygen).

So, number of atoms in 0.05 g water =3×6.02×1023×0.0518=0.05016×1023

=5.016×1021 atoms