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.
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Answer item 9.32 only.
![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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F691f2400-829c-4a67-bca6-2f10857f67a0%2Febea2cb3-fb75-4a19-a2b3-21044db70ca8%2Fy8n8ve3_processed.jpeg&w=3840&q=75)
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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