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. 3 SCIenceScene.com PHS A 1050 Topic 7 In Class January 202 Name Date \\X Show your work. (Type the formula you will use. Then show the math to show how you arrived at your answer.) 1. Determine the heat energy needed to raise 175 grams of water from a temperature of 220C to the boiling point. 2. Determine the heat energy needed to raise 105 grams of aluminum from a temperature of 150C to 380C. 3. Calculate the specic heat of an unknown substance, and identify that substance using the chart provided in your textbook. The mass of the substance is 500 g. It undergoes 3 100C change in temperature when 11.000 calories of heat are added. 4. Calculate the specic heat of an unknown substance. The ma $5 of the substance is 310 g. Its temperature changes from 20C to 80C, when 2976 calories of heat are added. 5. Calculate the thermal expansion ofa 425 m glass rod when its temperature changes from 50C to 50C. 6. Calculate the thermal expansion of a 100 m brass rod when its temperature changes from 50C to 900C. 7. Calculate the amount of heat transfer for a 6.00 cm thick wood wall when i ts temperature changes from 25 0C to 50 0C in 60 seconds. The area of the wall is 5000 cm2. 1' heat transfer for a 6.00 cm thick copper wall when its temperature changes from 50 0C to 25 0C in "r ' the wall is 90 cm and its width is 40 cm