Question

21. (1) Which has more number of atoms?
a)
100g of N, or 100g ofNH,
(ii) Calculate the number of moles of magnesium present in a Magnesium
ribbon weighing 12g. Molar atomic mass of mg is 24 mol'​

Answer 1

Explanation:

i)100g of NH3

ii)given that mass of ribbon=12g

molar mass of mg=24mol

number of moles=w/m

= 12/24mol

=0.5mole.

I hope it is helpful.