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**Finding quantities in chemical reactions**

Stoichiometry Finding quantities in chemical reactions

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C3H > 3CO2 + 4H2O If there are two moles of oxygen available, which mole ratio will tell you how much water is produced? A: 4 mol H20/1 mol O2 B: 5 mol O2/4 mol H2O

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C3H > 3CO2 + 4H2O If there are 10 moles of C3H8, which mole ratio will tell you how much oxygen is required for the reaction to take place? A: 1 mol C3H8/5 mol O2 B: 5 mol O2/3 mol C3H8

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C3H > 3CO2 + 4H2O Which ratio will tell you how much water is produced from the combustion of .5 moles of C3H8? A: 1 mol C3H8/4 mol H2O B: 2 mol H2O/1 mol C3H8

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4Al + 3O2 --> 2Al2O3 Which mole ratio describes how much oxygen is required to produce 10 moles of product? A: 2 mol Al2O3/3 mol O2 B: 3 mol O2/3 mol Al2O3

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4Al + 3O2 --> 2Al2O3 Which mole ratio tells you how much product is produced from three moles of aluminum? A: 2 mol Al2O3/4 mol Al B: 3 mol Al/2 mol Al2O3

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**ZnO + 2HCl --> ZnCl2 + H2O**

Which mole ratio tells you how to find the amount of water produced from two moles of zinc oxide? A: 1 mol H2O/1 mol ZnO B: 1 mol ZnO/1 mol H2O

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**ZnO + 2HCl --> ZnCl2 + H2O**

Which mole ratio tells you have to find how much HCl is required to get 8 moles of ZnCl2? A: 4 mol HCl/1 mol ZnCl2 B: 1 mol ZnCl2/2 mol HCl

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**ZnO + 2HCl --> ZnCl2 + H2O**

Classify the above reaction. A: synthesis B: decomposition C: single replacement D: double replacement E. combustion

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2H2O2 2H2O + O2 Given 1.34 mol H2O2 find moles of O2

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2H2O2 2H2O + O2 Given 1.34 mol H2O2 find moles of water

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Fe2O3 + 2Al 2Fe + Al2O3 3.30 mol Fe2O3 find moles of Al

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Fe2O3 + 2Al 2Fe + Al2O3 3.30 mol Fe2O3 find moles of iron

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Fe2O3 + 2Al 2Fe + Al2O3 3.30 mol Fe2O3 find moles of aluminum oxide

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The Mathematics of Chemical Equations

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