Question

What is an example of a stoichiometry practice problem?

Answer 1

4N`H_3` (g) + 6NO(g)→5`N_2`(g) + 6 `H_2`O(g)

How many moles of each reactant were there if 13.7 moles of `N_2`(g) is produced?

13.7 moles `N_2` (g) / 5 moles `N_2` (g)

13.7 moles `N_2` (g) / 5 moles `N_2` (g) ×4 moles NH3(g)
= 10.96 moles N`H_3`(g)

13.7 moles `N_2` (g) / 5 moles `N_2` (g) ×6 moles NO(g)
= 16.44 moles NO(g)

So we have 10.96 moles N`H_3`(g) and 16.44 moles NO(g).