Name: Answer Key Period: ______ Date: __________ Chem B Problems 1 – 6 for HW, the rest for extra practice/review
WS 4.9: Mole Ratio Problems
Directions: Solve the Following Problems. Show all work on a separate sheet of paper and box your final answer.
1) How many moles of Nitrogen Dioxide will be made from the reaction of 5.5 moles of Dinitrogen Tetraoxide?
N2O4(g) 2 NO2(g)
11 mol NO2
2) How many moles of NH3 will be produced when 13 moles of H2 reacts?
N2(g) + 3 H2(g) 2 NH 3(g)
8.7 mol NH3
3) How many moles of NH3 will be produced when 7.0 moles of N2 reacts?
N2(g) + 3 H2(g) 2 NH 3(g)
14 mol NH3
4) How many moles of Technetium(VII) Oxide will can be produced from 3.8 moles of Technetium?
4 Tc + 7 O2 2 Tc2O7
1.9 mol Tc2O7
5) Given the reaction below, how many moles of Vandium(II) Chloride will form when 3.22 moles of Hydrogen
gas reacts?
2 VCl3 + H 2 2 VCl2 + 2 HCl
6.44 mol VCl2
6) If 12 moles C8H18 burns in excess oxygen, how many moles of Carbon Dioxide will enter the atmosphere and
further contribute to global warming?
2 C8H18 (l) + 25 O2(g) 16 CO2(g) + 18 H2O(g)
96 mol CO2
7) If 45.0 moles of CH 4 reacts, how many moles of water will be produce?
CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)
90.0 mol H2O
8) How many moles of lead can be extracted if 50 moles of Carbon are used?
2 PbO + C 2 Pb + CO2
100 mol Pb
9) For the reaction below, determine how many moles of S2Cl2 formed when 7.80 moles of Sulfur reacts?
S8 + 4 Cl2 4 S2Cl2
31.2 mol S2Cl2
10) How many moles of Bismuth(III) Sulfate “Bi2(SO4)3” will can be produced if 25.0 moles of H2SO 4 reacts with
excess Bismuth given the reaction below?
6 H2SO4 + 2 Bi 6 H2O + Bi 2(SO4)3 + 3 SO 2
4.16 mol Bi2(SO 4)3
11) Given the reaction below, how many moles of Bismuth(II) Chloride will form when 1.55 moles of HCl reacts?
4 Bi + 3 O2 + 12 HCl 4 BiCl 3 + 6 H2O
.516 mol BiCl3
12) If .275 moles C5H12 burns in excess oxygen, how many moles of Water can form?
C5H12(l) + 8 O2(g) 5 CO2(g) + 6 H2O(g)
1.65 mol H2O
13) How many moles of Xenon Trioxide will be produced when 7.9 moles of Xenon Hexafluoride reacts?
3 XeF6 + 6 H2O 2 XeO3 + Xe + 12 HF
5.3 mol XeO3