Question

N2 + 3H2 = 2NH3 If 56 grams of nitrogen are used up by the reaction, how many grams of ammonia will be produced?

Answer 1

The molar mass of ammonia is 17 g/mol.

68 grams of ammonia corresponds to

17g/mol

68g

=4moles

4 moles of ammonia will be obtained from

2

4×1

=2 moles of nitrogen and

2

4×3

=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.