Energy%20Ws9_Reviewpdf

Energy%20Ws9_Reviewpdf - Name _ Energy and Thermochemistry...

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Name _______________________________ Date ______________ Period _________ Energy and Thermochemistry Review 1. Make the following conversions a. 8500 cal into Food Calories b. 1.8 kJ into joules c. 47.85 cal into joules d. .209 kJ into calories e. 750 J into kJ f. 358.9 cal into kJ 2. Calculate the heat in kcal that is absorbed when 1.00 L of water is heated from 18.0°C to 85.0°C? 3. A 195 g aluminum engine part at an initial temperature of 3.00°C absorbs 4.00 kcal of heat. What is the final temperature of the part? The specific heat capacity of Aluminum = 0.21 cal/g o C. 4. What quantity of heat is needed to raise the temp of 500.0 g of Cu from 20.0°C to 50.0°C? The specific heat capacity of Copper = 24.5 J/mol°C (you must convert this to J/g°C ) 5. 40.0 g of solution has its temp. raised from 25°C to 50°C by addition of 4,067 J of heat. What is the specific heat in J/g o C for the solution? Compare this value to the specific heat of water. 6.
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Energy%20Ws9_Reviewpdf - Name _ Energy and Thermochemistry...

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