Question

Nitrogen and Hydrozen combine in the ratio of 14:3 by mass to form ammonia.What mass of Hydrozen gas would be required to react completely with 28 g of Nitrogen gas. a)2g b)28g c)3g d)24g​

Answer 1

ANSWER

The molar mass of ammonia is 17 g/mol.

68 grams of ammonia corresponds to 17g/mol68g=4moles 

4 moles of ammonia will be obtained from 24×1=2  moles of nitrogen and 24×3=6  moles of hydrogen. 

The molar masses of nitrogen and hydrogen are 28 g/mol and 2 g/mol respectively.

2 moles of nitrogen corresponds to 2×28=56  grams.

6 moles of hydrogen corresponds to 6×2=12  grams.