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9.31 A metal radiator is made from 26.0 kg of iron. The specific heat of iron is 0.449 J/g °C. How much heat must be supplied to the radiator to raise its temperature from 25.0 to 55.0°C? 9.32 The material typically used to heat metal radiators is water. If a boiler generates water at 79.5°C, what mass of water was needed to provide the heat required in the previous problem? Water has a specific heat of 4.184 J/g °C.

9.31 A metal radiator is made from 26.0 kg of iron. The specific heat of iron is 0.449 J/g °C. How much heat must be supplied to the radiator to raise its temperature from 25.0 to 55.0°C? 9.32 The material typically used to heat metal radiators is water. If a boiler generates water at 79.5°C, what mass of water was needed to provide the heat required in the previous problem? Water has a specific heat of 4.184 J/g °C.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
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Answer item 9.32 only. 

"previous problem" stated there refers to item 9.31. Thank you?.

9.31 A metal radiator is made from 26.0 kg of iron. The specific heat of iron is 0.449 J/g °C. How much heat must be supplied to the radiator to raise its temperature from 25.0 to 55.0°C? 9.32 The material typically used to heat metal radiators is water. If a boiler generates water at 79.5°C, what mass of water was needed to provide the heat required in the previous problem? Water has a specific heat of 4.184 J/g °C. 9.33 Copper wires used to transport electrical current heat up because of the resistance in the wire. If a, 140-g wire gains 280 J of heat, what is the change in temperature in the wire? Copper has a specific heat of 0.384 J/g °C. 9.34 A copper nail and an iron nail of the same mass and initially at the same room temperature are both into a vessel containing boiling water. Which one would you expect to reach 100°C first? Why? 9.35 A piece of titanium metal with a mass of 20.8 g is heated in boiling water to 99.5°C and then dropped into a coffee cup calorimeter containing 75.0 g of water at 21.7°C. When thermal equilibrium is reached, the final temperature is 24.3°C. Calculate the specific heat capacity of titanium. put 9.36 Define the term calibration. 9.37 A calorimeter contained 75.0 g of water at 16.95 C. A 93.3-g sample of iron at 65.58°C was placed in it, giving a final temperature of 19.68°C for the system. Calculate the heat capacity of the calorimeter. Specific heats are 4.184 J/g/ C for H,O and 0.444 J/g//C for Fe. 9.38 The energy densities of various types of coal are listed below, Subbituminous 31 kJ/g Anthracite 35 kJ/g Bituminous 28 kJ/g Lignite 26 kJ/g
Transcribed Image Text:9.31 A metal radiator is made from 26.0 kg of iron. The specific heat of iron is 0.449 J/g °C. How much heat must be supplied to the radiator to raise its temperature from 25.0 to 55.0°C? 9.32 The material typically used to heat metal radiators is water. If a boiler generates water at 79.5°C, what mass of water was needed to provide the heat required in the previous problem? Water has a specific heat of 4.184 J/g °C. 9.33 Copper wires used to transport electrical current heat up because of the resistance in the wire. If a, 140-g wire gains 280 J of heat, what is the change in temperature in the wire? Copper has a specific heat of 0.384 J/g °C. 9.34 A copper nail and an iron nail of the same mass and initially at the same room temperature are both into a vessel containing boiling water. Which one would you expect to reach 100°C first? Why? 9.35 A piece of titanium metal with a mass of 20.8 g is heated in boiling water to 99.5°C and then dropped into a coffee cup calorimeter containing 75.0 g of water at 21.7°C. When thermal equilibrium is reached, the final temperature is 24.3°C. Calculate the specific heat capacity of titanium. put 9.36 Define the term calibration. 9.37 A calorimeter contained 75.0 g of water at 16.95 C. A 93.3-g sample of iron at 65.58°C was placed in it, giving a final temperature of 19.68°C for the system. Calculate the heat capacity of the calorimeter. Specific heats are 4.184 J/g/ C for H,O and 0.444 J/g//C for Fe. 9.38 The energy densities of various types of coal are listed below, Subbituminous 31 kJ/g Anthracite 35 kJ/g Bituminous 28 kJ/g Lignite 26 kJ/g
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