Mole and Mass Stoichiometry Problems
Answer each of the following questions using the equation provided. BE SURE
TO BALANCE EACH EQUATION BEFORE SOLVING ANY PROBLEMS. SHOW
ALL WORK.
1. ___NO + __ O2 ___NO2
a. 2 moles of NO will react with ______ mole(s) of O2 to produce ______
mole(s) of NO2.
b. ? moles NO2 = 3.6 moles O2
c. How many moles of NO must react to form 4.67 moles of NO2?
2. ___NH3 + ___O2 ___N2 + ___H2O
a. 20 moles of NH3 are needed to produce ______ moles of H2O.
b. How many moles of N2 will be produced if 3.5 moles of O2 react?
1. How many grams of NaCl will be produced when 22.85 g of HCl are neutralized
by an excess of NaOH according to the equation below?
HCl + NaOH ---> H2O + NaCl
2. How many grams of potassium nitrate are required to produce 5.00 g of
potassium nitrite according to the equation below?
2KNO3(s) ---> 2KNO2(s) + O2(g)
3. How many grams of magnesium oxide are produced when 10.00 grams of
magnesium burn in an excess of oxygen, as shown below?
2Mg + O2 ---> 2MgO
4. How many grams of aluminum would react completely with 17.50 grams of
copper (II) chloride according to the following equation?
Al(s) + CuCl2(aq) ---> AlCl3(aq) + Cu(s)