Stoichiometry

1. How    many grams of hydrogen gas are produced    upon complete reaction of 4.6 moles of sodium with water?        What assumption    must you make concerning the water?Sodium oxide    is the other product.
2. How many mols of water are produced from the    complete combustion of 3.21 x 10-4 mg of propane(C3H8)?    What is    the    assumption made    here?
3. How many molecules of oxygen    gas are    required to burn 0.161g    of propane?
4. A 1.090g piece of aluminum is placed    into a    solution containing 5.10g of copper(II)    nitrate.How many grams of copper    will be    formed?    This is    a single replacement reaction.
5. How many grams of carbon dioxide gas    will be    formed when 1.000kg of gasoline    (C8H18)    is burned in a    container with    500.0g of oxygen gas?Which reactant is limiting?
6. When    the last reaction was carried out,a total of 354.10g of    CO2 was    collected.
What was the percent yield of CO2 in this reaction?

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