Pick out the correct statements from the following. Also correct the incorrect statements.
a) The number of molecules present in 1 mol hydrogen and 1 mol oxygen are same.
b) 1 mole chlorine contain `4 xx 6.022 xx10^23` chlorine molecules.
c) The mass of 1/2 mol nitrogengas is 14g.
d) 0.5 mol water has the mass of 9g. There are `6.022 xx 10^23 H_2 O` molecules in it.
(Atomic mass H= 1.0= 16, Cl 35.5, N = 14).

Explanation

Correct statement - a,c
2mole chlorine contain `2 xx 6.022 xx 10^23` chlorine molecules
0.5 mole water has 9g mass
there are`0.5 xx 6.022 xx 10^23 H_2 O ` molecules in it.