Question

the number of molecules in 16 .0 g of oxygen is ?

Answer 1

Answer:

Gram Molecular Mass of O2 = 32 gm

32 gms O2 cotain molecules = 6.022 x10^3

16 gms of O2 contain molecules =16/32 x 6.022 x 10^23

= 3.011 x 10^23 nos.

Ans: 3.011 x 10^23 nos. of O2 molecules