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What is an example of a stoichiometry practice problem?

1 Answer

Manish Bhardwaj

Jul 3, 2014

4N $H_{3}$ $H_3$ (g) + 6NO(g)→5 $N_{2}$ $N_2$ (g) + 6 $H_{2}$ $H_2$ O(g)

How many moles of each reactant were there if 13.7 moles of $N_{2}$ $N_2$ (g) is produced?

13.7 moles $N_{2}$ $N_2$ (g) / 5 moles $N_{2}$ $N_2$ (g)

13.7 moles $N_{2}$ $N_2$ (g) / 5 moles $N_{2}$ $N_2$ (g) ×4 moles NH3(g)
= 10.96 moles N $H_{3}$ $H_3$ (g)

13.7 moles $N_{2}$ $N_2$ (g) / 5 moles $N_{2}$ $N_2$ (g) ×6 moles NO(g)
= 16.44 moles NO(g)

So we have 10.96 moles N $H_{3}$ $H_3$ (g) and 16.44 moles NO(g).

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