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Limiting Reactant in a Fuel Cell Car 1 Fill In the Blank 1 point In this part of the activity. you will be solving a limiting reactant In order to determine the theoretical yield in grams of H20 (mass problem in order to determine the mass of water produced in a fuel cell car. of water produced), we will need to go through the following steps. In a limiting reactant problem, the coefficients in a balanced equation Step 1: Convert reactant amounts to moles. for the reaction of interest, provide the molecule or mole ratio(s) How many moles of each of the reactants are initially between reactants. Generally, the amounts of both (or all) reactants present? are given. Reactant quantities can be given in different units. When Hint: Use molar mass as a conversion factor to get between the amounts of the reactants are not given in moles, then moles must units of g and moles first be calculated from other units. Molar Mass for H2 - 2.016gH= . If the amounts of reactants are given in grams, the amounts must first be converted to moles using the molar mass (@/mol) of each . Molar Mass for 2- 32.00gOz substance. In order for a fuel cell car to run, Hy and On react together and are converted to HO. The balanced chemical equation is: Based on the given conditions for the fuel cell car shown at the left: 2Hz (9) + Oz (g) - 2H20 (1) What are the initial quantities of both reactants in units of moles? The initial quantities in units of moles are: What is the theoretical yield in grams of H20? This is the mass of choose your answer.. V of hydrogen and water produced based on the following initial conditions(Assume that the reaction will run to completion.) choose your answer... V of oxygen. The gas reservoirs of the fuel cell car were charged, and it was determined that 0.00100g of Hy and 0.0100 g of Oz were the initial amounts present in their respective cylinders. 2 Multiple Choice 1 point Step 2: Use the balanced equation and your preferred method to determine which one is the limiting reactant: (Refer to the Methods at the left) Based on the given conditions for the fuel cell car shown at the left: What is the limiting reactant? O O2 OH2