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

Mitosis is a type of cell division that produces cells that are identical to the parent cell. meiosis is a different type of cell division that produces cells that carry have a genetic material of the parent cell. based on the information provided how do the purpose of mitosis and meiosis differ

Actual ingredients of lab (the cookies i am actually making) 1/2 cup sugar 1/2 cup brown sugar 1 1/3 stick margarine 1 egg 1/2 tsp salt 1 tsp vanilla 1/2 tsp baking soda 1 1/2 cup flour 1 1/3 cup chocolate chip can you answer the questions below ? discussion 1. suppose you are given the following amounts of ingredients: 1 dozen eggs 24 tsp. of vanilla 1 lb. (82 tsp.) of salt 1 lb. (84 tsp.) of baking soda 3 cups of chocolate chips 5 lb. (11 cups) of sugar 2 lb. (4 cups) of brown sugar 1 lb. (4 sticks) of margarine a. for each ingredient, calculate how many cookies could be prepared if all of that ingredient were consumed. (for example, the recipe shows that using 1 egg- with the right amounts of the other ingredients- yields 24 cookies. how many cookies can you make if the recipe is increased proportionately for 12 eggs? ) b. to determine the limiting reactant for the new ingredients list, identify which ingredient will result in the fewest number of cookies. c. what is the maximum number of cookies that can be produced from the new amounts of ingredients?

Which of the following units is not an official si unit