Stoichiometry Quiz - Practice MCQs with Answers

Our stoichiometry quiz consists of 15 multiple-choice questions. Each time your questions will be different because they will be coming randomly from a question bank. Test your understanding by attempting this quiz and see how much you score! Topics include limiting reagents, theoretical yield, percent yield, mole ratios, and reaction stoichiometry.

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1. What is the percent yield if 15 grams of product are obtained out of a theoretical yield of 20 grams?

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2. What volume of SO₂ at room temperature and pressure is produced when 9.7g of Zinc Sulfide (ZnS) reacts as follows: 2ZnS(s) + 3O₂(g) → 2ZnO(s) + 2SO₂(g)

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3. How many covalent bonds are present in 9g of H₂O?

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4. When one mole of each of the following is completely burnt in oxygen, which will give the largest mass of CO₂?

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5. Which of the following compounds contains the highest percentage by mass of nitrogen?

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6. How many moles of oxygen are needed for the complete combustion of two moles of butane (C₄H₁₀)?

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7. The Avogadro's constant is the number of:

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8. What is the mass of aluminum in 204g of aluminum oxide, Al₂O₃?

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9. A necklace has 6g of diamond in it. What is the number of atoms in it?

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10. Which unit is not typically used in stoichiometry calculations?

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11.

How many grams of H₂O are formed from 8 g of H₂?

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12.

If 8.4 g of Mg reacts with HCl, how many liters of H₂ gas are produced at STP?

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13.

What volume of O₂ (at STP) is required to completely react with 2 moles of C₂H₆?

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14.

If 5 moles of CH₄ react with O₂, how many moles of CO₂ are produced?

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15.

What is a limiting reactant in a chemical reaction?

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The average score is 38%

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