Desperately in need of help on chemistry homework?

Posted on 2014-12-05 13:14:00 in Chemistry by JAKE

1. How many moles of oxygen are produced by the decomposition of 6.25 moles of potassium chlorate?
2KClO3 = 2KCl + 3O2

2. ?How many moles of hydrogen are produced from the reaction of 3.86 moles of zinc with an excess of hydrochloric acid? Zn + 2HCl = ZnCl2 + H2

3. ?How many moles of oxygen are necessary to react completely with 4.50 moles of propane, C3H8?
C3H8 + 5O2 = 3CO2 + 4H20

4. ?How many moles of potassium nitrate are produced when 2.15 moles of potassium phosphate react with excess aluminum nitrate? K3PO4 + Al(NO3)3 = 3KNO3 + AlPO4

5.? How many moles of sodium chloride are produced when 7.23 moles of iron (II) chloride reacts with excess sodium phosphate? 3FeCl2 + 2Na3PO4 = Fe3(PO4)2 + 6NaCl

6. ?How many moles of potassium are required to react with 2.50 moles of aluminum chloride to produce potassium chloride? 3K + AlCl3 = 3KCl + Al

7. ?How many moles of oxygen are required to react with 2.50 moles of iron metal to produce iron (III) oxide?
4Fe + 3O2 = 2Fe2O3

8. ?How many moles of hydrofluoric acid are required to produce 5.20 moles of silicon tetrafluoride according to the following reaction? SiO2 + 4HF = 2H2O + SiF4

9. ?How many moles of water are required to produce 6.75 moles of arsenic acid in the reaction with diarsenic pentoxide? As2O5 + 3H20 = 2H3AsO4

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