Chapter 4 Lecture Notes 1192

Chapter 4 Lecture Notes 1192 - 9/19/2011 Chapter 4 Chemical...

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9/19/2011 1 Chapter 4 Chemical Reactions
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9/19/2011 2
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9/19/2011 3 Reaction Stoichiometry: Quantitative relationships between reactants and products. Carbon monoxide and oxygen can combine to form carbon dioxide. How many moles of carbon dioxide will be produced if you start with 2.51 moles of carbon monoxide in excess oxygen? How many moles of oxygen is required?
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9/19/2011 4 Consider the combustion of 1.46 g of propane. How many g of CO 2 is produced? (Assume excess oxygen.) How many g of oxygen is required? e.g. #23: Iron ore is impure Fe 2 O 3 . When Fe 2 O 3 is heated with an excess of carbon, metallic iron and carbon monoxide gas are produced. From a sample of ore weighing 938 kg, 523 kg of pure iron is obtained. What is the mass percent Fe 2 O 3 in the ore sample, assuming that none of the impurities contain Fe?
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9/19/2011 5 e.g. #28: An excess of aluminum foil is allowed to react with 225 mL of an aqueous solution of HCl ( d = 1.088 g/mL) that contains 18.0% HCl by mass. What mass of H 2(g) is produced?
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9/19/2011 6
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Chapter 4 Lecture Notes 1192 - 9/19/2011 Chapter 4 Chemical...

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