The molecular mass of ammonia is 17.
a) How much is the GMM of ammonia?
b) Find out the number of moles of molecules present in 170g of ammonia.
c) Calculae the number of ammonia molecules present in the above sample of ammonia?

Explanation

a) 17g = 1GMM
b) Given mass of `NH_3 = 170g`
GMM = 17g
No of moles = `(170g/17g)` = 10
c) No. of molecules = `10 xx 6.022 xx 10^23`