Question

11. 3 CO + Fe2O3 --> 2 Fe + 3 CO2 12. Using the equation in number 11, what is the mole ratio of carbon monoxide reacting to the amount of carbon dioxide being produced? A. 3:1 B. 2:1 C. 3:3 D. 3:2 13. A student wants to know how many grams of water are made from 5.00 g oxygen gas. Which step should be substituted for the question marks? 2 H2+ O2 --> 2 H2O 5.0 g O2/1 Ã— 1.0 moles O2/ 31.998 g O2 Ã— 2 moles H2O/ 1 mole O2 Ã— 18 g H2O/ 1 mole H2O A. 18 g H2O / 1.0 mole O2 B. 2.0 mole H2O/ 1.0 mole O2 C. 18 g H2O/ 2.0 mole H2O D. 2.0 mole O2 /2.0 mole H2O 14. Stoichiometry is possible due to the Law of Conservation of Mass. A. Newtonâ€™s three laws of motion B. Law of Conservation of Mass C. Law of Molarity D. Law of Scientific Principles 15. What is the limiting reactant if 20.0 moles of O2 react with 30.0 moles of H2 according to the following reaction? 2 H2+ O2 --> 2 H2O A. H2 B. O2 C. Both A and B. D. H2O

          11. 3 CO + Fe2O3 --> 2 Fe + 3 CO2
    12. Using the equation in number 11, what is the mole ratio of
    carbon monoxide reacting to the amount of carbon dioxide being
    produced?
    A. 3:1
    B. 2:1
    C. 3:3
    D. 3:2
    13. A student wants to know how many grams of water are made
    from 5.00 g oxygen gas. Which step should be substituted for the
    question marks? 2 H2+ O2 --> 2 H2O
    5.0 g O2/1 Ã— 1.0 moles O2/ 31.998 g O2 Ã— 2 moles H2O/ 1 mole O2 Ã— 18 g H2O/ 1 mole H2O
    A. 18 g H2O / 1.0 mole O2
    B. 2.0 mole H2O/ 1.0 mole O2
    C. 18 g H2O/ 2.0 mole H2O
    D. 2.0 mole O2 /2.0 mole H2O
    14. Stoichiometry is possible due to the Law of Conservation of Mass.
    A. Newtonâ€™s three laws of motion
    B. Law of Conservation of Mass
    C. Law of Molarity
    D. Law of Scientific Principles
    15. What is the limiting reactant if 20.0 moles of O2 react with
    30.0 moles of H2 according to the following reaction? 2 H2+ O2
    --> 2 H2O
    A. H2
    B. O2
    C. Both A and B.
    D. H2O

Added by Mary B.

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