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Mole Ratios & Stoichiometry
Contributed by: Moreno
  • 1. How many moles of aluminum would be needed to completely react with 8.0 moles of oxygen gas?
  • 2. How many moles of aluminum oxide would be produced if 5 moles of aluminum were reacted with an excess of oxygen?
  • 3. How many moles of water would be needed to create 5.0 moles of glucose?
  • 4. If 7.5 moles of glucose were produced during photosynthesis, how many moles of oxygen would also be produced?
  • 5. How many moles of iodine heptafluoride would be produced if 4.0 moles of fluorine gas was reacted with an excess of iodine?
  • 6. Methane gas burns very easily in the presence of oxygen. How many grams of water would be produced from the complete combustion of 22.5 grams of methane?
  • 7. If 60.0 grams of glucose were completely decomposed into its component elements, how many grams of hydrogen gas would be produced?
  • 8. In the reaction shown above, ammonia reacts with water to produce nitrogen dioxide and hydrogen gas. If 100. g of ammonia are reacted with an excess amount of water, how many grams of nitrogen dioxide would be produced?
  • 9. How many grams of tin (IV) bromide would be produced if 90.5 grams of sodium bromide were reacted with an excess amount of tin (IV) nitrate?
  • 10. If 25.0 grams of oxygen completely reacted with a sample of powdered aluminum, how many grams of aluminum oxide would be produced?
  • 11. If 15.0 grams of lead (II) nitrate (Pb(NO3)2) are reacted with an excess of potassium chloride, how many grams of precipitate (PbCl2) would be formed?
  • 12. If 145 grams of lithium metal is allowed to completely react with nitrogen gas, how many grams of lithium nitride would be produced?
  • 13. The reaction above shows how heptane gas burns in the presence of oxygen. If 150. grams of oxygen are used to fully burn a sample of heptane, how many grams of water would be produced?
  • 14. Potassium chlorate can decompose into potassium chloride and oxygen gas as shown in the reaction above. If 78.0 grams of potassium chlorate decompose, how many grams of oxygen would be produced?
  • 15. During an experiment, the reaction shown above was performed and allowed to go to completion. If 120.3 grams of potassium hydroxide were used in this reaction, how many grams of iron (III) hydroxide were produced?
  • 16. If 50.0 grams of mercury (II) oxide are fully decomposed, how many grams of oxygen will be produced?
  • 17. How many grams of boron trihydride would be produced if 15.0 grams of hydrogen gas were reacted with an excess of boron?
  • 18. Sodium hydroxide (NaOH) neutralizes nitric acid (HNO3) according to the equation above. How many grams of sodium hydroxide would be required to completely neutralize 40.0 grams of nitric acid?
  • 19. Pentane gas (C5H12) burns in the presence of oxygen. If 125 grams of pentane were combusted with an excess amount of oxygen, how many grams of water would be produced?
  • 20. How many grams of copper would be produced if 65.0 grams of aluminum was reacted with an excess of copper (II) sulfate?
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