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What is an example of a stoichiometry practice problem?

Answer 1

Wyatt Atkins

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).

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Answer 2

Axel Alvarado

An example of a stoichiometry practice problem could be:

"If 5.0 grams of magnesium (Mg) reacts with excess hydrochloric acid (HCl), how many grams of magnesium chloride (MgCl2) will be produced?"

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.