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H7_3-30-10 - largest change in temperature 2 If a material...

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H7: Introduction to ice Materials: ice cubes, hot water, Styrofoam cups, stop watch Initial Instructions and questions: Take one ice cube and try to keep it for as long as possible, at least until the end of class today. Take another ice cube and try to melt it as quickly as possible. Time the process with a stop watch. Guide to notes in your lab manual: 1. What approaches did you use to preserve the ice cube and to melt it quickly? 2. How does this relate to our previous work on heat? Practice problems: 1. If we add the same amount of heat to equal masses of copper and water, which has the
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Unformatted text preview: largest change in temperature? 2. If a material has a specific heat of c = 0.5 cal/g•°C, what is the temperature change when 10 cal is added to 2 g of the material? 3. You mix water in the ratio 4:1, meaning that there is four times as much hot water at 70 °C as cooler water at 40 °C. What is the final temperature? 4. You add 50 g of copper to 50 g of water. The water starts at 24 °C and ends up at 28 °C. What was the initial temperature of the copper?...
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