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Stoichiometry Worksheet Answers

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Chemistry stoichiometry worksheet answers

Stoichiometry worksheet and key answers

Chemistry stoichiometry worksheet

Key Worksheet Chemical Reactions and Stoichiometry

1. Given the equation 3A + B → C + D, you react 1 mole of A with 3 moles of B. True or false: B
is the limiting reactant because you have fewer moles of B than A.

2. NaHCO3 is the active ingredient in baking soda. How many grams of oxygen are in 0.35 g of
NaHCO3?

3. Suppose the reaction Ca3(PO4)2 + 3H2SO4 → 3CaSO4 + 2H3PO4 is carried out starting with
103g of Ca3(PO4)2 and 75.0 g of H2SO4. How much phosphoric acid will be produced?

4. When 125.0 g of ethylene (C2H4) burns in oxygen to give carbon dioxide and water, how many grams
of CO2 are formed?

5. Consider the following reaction:
CH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g)
What mass of CCl4 will be formed if 1.20 moles of methane react with 1.60 moles of chlorine?

6. The Claus reactions, shown below, are used to generate elemental sulfur from hydrogen sulfide.
2H2S + 3O2 → 2SO2 + 2H2O
SO2 + 2H2S →3S + 2H2O
How much sulfur (in grams) is produced from 48.0 grams of O2?

7. How many grams of NaCl are contained in 350. mL of a 0.250 M solution of sodium chloride?

8. What mass of calcium chloride, CaCl2, is needed to prepare 2.850 L of a 1.56 M solution?

9. A 54.8 g sample of SrCl2 is dissolved in 112.5 mL of solution. Calculate the molarity of this solution.

10. What mass of NaOH is required to react exactly with 25.0 mL of 1.2 M H2SO4?

11. Consider the reaction between 15.0 mL of a 1.00 M aqueous solution of AgNO3 and 10.0 mL of a 1.00 M aqueous solution of K2CrO4. When these react, a precipitate is observed. What is present in solution after the reaction is complete? Note: the solid is not considered to be in solution.

12. With what volume of 5.0 M HF will 7.4 g of calcium hydroxide react completely, according to the reaction 2HF + Ca(OH)2 → CaF2 + 2H2O?

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 (CHEM 100) Stoichiometry Worksheet Answers

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