MULTIPLE CHOICE. Choose the letter of the best answer. Write the chosen letter on a separate sheet of paper. 1. The reactant that is completely used up in a chemical reaction is known as a. 2 a. Limiting reactant c. chemical reaction b. Excess reactant d. reactant 2. For instance, we have 5 hotdogs and 4 buns. How many complete hot dog sandwiches can we make? b. 4. 3.6 d. 8 3. t is the reactant that is still present after the reaction stops. a. Limiting reactant c. chemical reaction b. Excess reactant d. reactant 4. Which of the following is true about the limiting reactant? a. It is added in excess b. It gives a larger amount of product c. It is depleted after the reaction d. It is used to calculate the actual yield. 5. It refers to the efficiency of a chemical reaction. a. Theoretical yield c. Percent yield b. Actual yield d. Molecular weight 6. What is the actual yield of a reaction that has a maximum possible yield of 6.00 g and is only 75% complete? a.4.50g b. 6.00g c. 8.00g d. 10.3g 7. Consider the decomposition of hydrogen peroxide. 2H2O2 → 2H2O + O2 When 2 moles H202 was used in an experiment, 0.8 mole 02 was produced. Question: What is the percent yield of the reaction? a. 0.4% b. 0.8% c. 40% d. 80% 8. Refer to the reaction below. CH4+2 Cl2 → CH2 C12+ 2HCI Question: How many moles CH2Cl2 will be produced if two moles Cl2 are completely used up in the reaction? a. 4 moles b. 2 moles c. 1 mole d. 0.5 mole 9. Consider the reaction between 50g Cu and 85g AgNO3.​