Answers
(A) A 3.0 mol sample of KClO3 was decomposed according to the equation 2KClO3(s) ---> 2KCl(s) + 3O2(g)
How many moles of O2 are formed assuming a 100% yield? Answer 4.5 mol
(B) An excess of Al and 6.0 mol of Br2 are reacted according to the equation 2Al + 3Br2 --> 2AlBr3
How many moles of AlBr3 will be formed assuming 100% yield? Answer 4.0 mol
(C) For the reaction C2H4(g) + 3O2(g) --> 2CO2(g) + 2H2O(g) if 6.0 mol of CO2 are produced, how many
moles of O2 were reacted? Answer 9.0 mol
(D) For the reaction 4NH3(g) + 7O2(g) ---> 4NO2(g) + 6H2O(g) how many moles of ammonia will be required
to produce 10.0 mol of water? Answer 6.67 mol