What is an example of a stoichiometry practice problem?

1 Answer
Jul 3, 2014

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).