Stoichiometry Quiz Review Honors Chemistry

What is the molar mass of Cl₂?

Calculate the molar mass of KOH.

Calculate the molar mass of Cu₂O.

Calculate the molar mass for Al(OH)₃

Using the balanced chemical equation:

Mg + 2 HCl --> MgCl₂ + H₂

How many grams of MgCl₂ is produced if 4.67 moles of HCl react?

In the reaction $$4Fe + 3O_2 \rightarrow 2Fe_2O_3$$ , if you have 112 grams of $$Fe$$ (molar mass = 55.85 g/mol), how many grams of $$Fe_2O_3$$ (molar mass = 159.69 g/mol) can be produced?

For the reaction $$N_2 + 3H_2 \rightarrow 2NH_3$$ , if you start with 28 grams of $$N_2$$ (molar mass = 28.02 g/mol), how many grams of $$NH_3$$ (molar mass = 17.03 g/mol) can be produced?

When reacting Na with Cl₂, we calculated that the theoretical yield should be 13 grams. Our actual yield was 12.5 grams. What is the percent yield?

2Fe₂O₃ + 3C → 4Fe + 3CO₂

You add 28 grams of carbon. You find the actual yield to be 81.2 grams of CO₂. What is the percent yield of CO₂? (Hint: calculate theoretical yield of CO₂ first)