1.- Sodium bicarbonate or sodium hydrogen carbonate, NaHCO3, releases carbon dioxide gas when heated at 180 °C, which is responsible for the rising of cookies, donuts, cakes, and bread. a) Write a balanced equation for the decomposition of the compound (one of the products is Na2CO3).
b) Calculate the mass of CO2 produced if 15.5g of NaHCO3 are heated at 185°C during the baking process of chocolate cake.
c) How many grams of NaHCO3 are necessary to produce 23g of CO2 if the % yield of this reaction is 84%?
2 =44.01 3 =72.01

2.- Ammonium nitrate is a White crystalline solid, highly soluble in water and is used in agriculture as a fertilizer. The industrial process of ammonium nitrate entails the acid-base reaction of ammonia with hydroxide and nitric acid:
NH4OH (ac) + HNO3 (ac) NH4NO3 (ac) + H2O (l)

a) Calculate the mass of NH4NO3 produced by the reaction 50 g de NH4OH 90% of purity with 85 g of HNO3 and the % yield is del 83%.
b) What is the limiting reactant?
c) How many grams of the excess reactant remains at the end of the reaction?
4 = 35.05 43 = 80.04 3 = 63.01