Based on the following chemical equation: 4 HCN + 5 02 ---> 2 N2 + 4 CO2 + 2 H2O. How many grams of N2 are formed when 32.23 g of HCN react? (3-4 sig figs). Report to two decimal places. g HCN --> mol HCN --> mol N2 --> g N2 Species MM, g/mol N2 28.01 HCN 27.03 CO2 44.01 O2 32.00 H20 18.02

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4.Given the balanced chemical equation below, determine the mass of AgCl produced when 11g of Silver nitrate reacts with 15g of Sodium chloride. AgNO3 + NaCl --> AgCl + NaNO3  _________g AgCl How many grams of excess reactant remain after the reaction_________ g Blank 1:  Blank 2:   show all work

B. Stoichiometry and Percent Yield DATA 1. Mass of sodium carbonate 2. Mass of filter paper 3. Mass of dry filter paper and calcium carbonate product CALCULATIONS AND QUESTIONS (show all of your work) 1. Mass of dried product (actual yield) (Mass of dry filter paper and calcium carbonate product - mass of filter paper) 1.0 g 1.2g 2.69 2. Write the balanced chemical equation for the reaction of sodium carbonate and calcium chloride. (Ignore the hydrate in this equation) 2.89 3. Use stoichiometry to calculate the theoretical yield of calcium carbonate product based on the starting mass of sodium carbonate. 4. Calculate the percent yield of the reaction based on the actual yield of dried calcium carbonate product and the theoretical yield of calcium carbonate product. 11