Question

What is mole fraction of ammonia if 51 g of ammonia is present in 90 gram of water​

Answer 1

Answer:

3/8

Explanation:

m. mass of ammonia(nh3) = 14+3 = 17

so, mole of ammonia in 51g = 51/17 = 3

and m. mass of water = 2+16 = 18

so, mole of water in 90g = 90/18 = 5

so, total moles are = 5+3 = 8

mole fraction of ammonia = 3 / 8