Chapter 6 Workout Problems

# Chapter 6 Workout Problems - Chapter 6Energy Units In an...

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Chapter 6- Energy Units In an old textbook you read that the oxidation of 1 gram of hydrogen to form liquid water produces 3800 calories. What is this energy unit of joules? The label on a cereal box indicates that one serving (with skim milk) provides 250 Cal. What is this energy in kilojoules? Specific Heat Capacity Determine the quantity of heat that must be added to raise the temperature of a cup of coffee (250mL) from 20.5C to 95.6C. Assume that water and coffee have the same density (1g/mL) and the same specific heat capacity. In an experiment it was determined that 59.8 J was required to change the temperature of 20g of ethylene glycol by 1K. Calculate the specific heat capacity of ethylene glycol from these data.

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A 88.5g piece of iron whose temperature is 78.8C is placed uner a beaker containing 244g of water at 18.8C. When thermal equilibrium is reached, what is the final temperature? A 15.5g piece of chromium, heated to 100C, is dropped into 55.5g of water at 16.5C. The final temperature of the metal and the water is 18.9C. What is the specific heat capacity of chromium? A piece of iron (400g) is heated in a flame and then dropped into a beaker containing
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## This homework help was uploaded on 04/14/2008 for the course CHEM 101 taught by Professor Williamson during the Fall '08 term at Texas A&M.

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Chapter 6 Workout Problems - Chapter 6Energy Units In an...

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