Unit 7 Stoichiometry

How many moles of KClO3 must decompose in order to produce 9 moles of O2?

How many moles of CO2 is required to produce 5 moles of O2?

2 NaClO₃ (s) --> 2NaCl (s) +3 O₂ (g)

12.00 moles of NaClO₃ will produce how many grams of O₂?

How many grams of silver will be formed from 12.0 grams of copper?

The diagram below represents H₂ and Cl₂ molecules that will potentially react to form HCl. Which of the following best describes this reaction?

What kind of ratio is represented when having one hot dog in one bun?

Identify the limiting and excess reactants in the reaction shown.

Hydrogen and oxygen molecules combine to form water molecules as shown in the reaction below. Given the molecules provided, which of the following is true about the products of this reaction? 

A reaction $$2A + 4B \rightarrow 3C$$ is set up with 8 moles of A and 8 moles of B. Calculate the amount of C produced and identify the excess reactant.

4Si₂H₃ + 11O₂ <=> 8SiO₂ + 6H₂O

Millie reacts 30g of Disilicon Trihydride (Si₂H₃) with an excess of Oxygen gas and produces 70g of Silicon Dioxide (SiO₂). This doesn't match her calculations however. What is Millie's percent yield?

What is the formula for calculating percent yield?

If 23 g KCl are obtained,

what is the percent yield for the reaction?

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?

How confident do you feel about this topic now?