Worksheet 2


1.      Calculate the number of grams of lead that is produced when zinc reacts with 4.2 grams of lead (II) nitrate to form lead and zinc nitrate .



2.      If 3.0 moles of hydrochloric acid reacts with potassium carbonate to form water, carbon dioxide and potassium chloride, calculate the number of grams of water that will be produced.


3.      When 6.5 moles of sodium hydroxide decomposes, water and sodium oxide are formed. Calculate the mass of water formed.



4.      Calculate the number of moles of oxygen gas, O2, that must react with 35.0 grams of copper (II) chloride to form copper (II) chlorate.


5.      If 3.0 moles of magnesium is allowed to react with hydrochloric acid, how many moles of magnesium chloride and H2 will be produced?


6.      If 16 grams of hydrofluoric acid reacts with tin, how many grams of tin (II) fluoride are produced? How many moles of H2 will be produced?


7.      Acetylene gas (C2H2) is used in welding and produces an extremely hot flame when undergoing a complete combustion reaction. If 3.54 x 105 grams of acetylene burn completely, how many grams of water are produced?


C2H2 + O2 CO2 + H2O