Have an account?
Skip to Content
Build your own quiz
Suggestions for you
10 questions
Show Answers
See Preview
- 1. Multiple ChoiceIn the reaction represented by the equation N2 + 3H2 --> 2NH3, what is the mole ratio of nitrogen to ammonia?1:11:21:32:3
- 2. Multiple ChoiceThe Haber process for producing ammonia commercially is represented by the equation N2(g) + 3H2(g) --> 2NH3(g). To completely convert 9.0 mol hydrogen gas to ammonia gas, how many moles of nitrogen gas are required?1.0 mol2.0 mol3.0 mol6.0 mol
- 3. Multiple ChoiceFor the reaction represented by the equation
2Na + 2H2O --> 2NaOH + H2, how many grams of hydrogen are produced if 120. g of sodium and 80. g of water are available?4.5 g45 g80. g200. g - 4. Multiple ChoiceIn most chemical reactions the amount of product obtained isequal to the theoretical yield.less than the theoretical yield.more than the theoretical yieldmore than the percentage yield
- 5. Multiple ChoiceFor the reaction represented by the equation Cl2 + 2KBr --> 2KCl + Br2, calculate the percentage yield if 200. g of chlorine react with excess potassium bromide to produce 410. g of bromine.73.4%82.1%91.0%98.9%
- 6. Multiple ChoiceWhich branch of chemistry deals with the mass relationships of elements in compounds and the mass relationships among reactants and products in chemical reactions?qualitative analysisstoichiometryentropychemical kinetics
- 7. Multiple ChoiceIn a chemical reactionthe mass of the reactants equals the mass of the products.the mass of the products is greater than the mass of reactants.the number of atoms in the reactants and products must change.energy as heat must be added to the reactants.
- 8. Multiple ChoiceWhich observation does not indicate that a chemical reaction has occurred?formation of a precipitateproduction of a gasevolution of heat and lightchange in total mass of substances
- 9. Multiple ChoiceHow would oxygen be represented in the formula equation for the reaction of methane and oxygen to yield carbon dioxide and water?oxygenOO2O3
- 10. Multiple ChoiceWhen the equation Fe3O4 + Al --> Al2O3 + Fe is correctly balanced, what is the coefficient of Fe?3469
- Answer choicesTagsAnswer choicesTags