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45. .. To determine the specific heat of an object, a student heats it to 100 °C in boiling water. She then places the 34.5-g object in a 151-g aluminum calorimeter containing 114 g of water. The alu- minum and water are initially at a temperature of 20.0 °C, and are thermally insulated from their surroundings. If the final tempera- ture is 23.6 °C, what is the specific heat of the object? Referring to Table 16-2, identify the material in the object.

45. .. To determine the specific heat of an object, a student heats it to 100 °C in boiling water. She then places the 34.5-g object in a 151-g aluminum calorimeter containing 114 g of water. The alu- minum and water are initially at a temperature of 20.0 °C, and are thermally insulated from their surroundings. If the final tempera- ture is 23.6 °C, what is the specific heat of the object? Referring to Table 16-2, identify the material in the object.

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45. To determine the specific heat of an object, a student heats it to 100 °C in boiling water. She then places the 34.5-g object in a 151-g aluminum calorimeter containing 114 g of water. The alu- minum and water are initially at a temperature of 20.0 °C, and are thermally insulated from their surroundings. If the final tempera- ture is 23.6 °C, what is the specific heat of the object? Referring to Table 16-2, identify the material in the object.
Transcribed Image Text:45. To determine the specific heat of an object, a student heats it to 100 °C in boiling water. She then places the 34.5-g object in a 151-g aluminum calorimeter containing 114 g of water. The alu- minum and water are initially at a temperature of 20.0 °C, and are thermally insulated from their surroundings. If the final tempera- ture is 23.6 °C, what is the specific heat of the object? Referring to Table 16-2, identify the material in the object.
16-2 TEMPERATURE SCALES Temperature is commonly measured in terms of three different scales. Celsius Scale In the Celsius scale, water freezes at 0 °C and boils at 100 °C. Fahrenheit Scale In the Fahrenheit scale, water freezes at 32 °F and boils at 212 °F. Absolute Zero The lowest temperature attainable is referred to as absolute zero. It is impossible to cool an object to a temperature lower than absolute zero, which is −273.15 °C. Kelvin Scale In the Kelvin scale, absolute zero is 0 K. In addition, water freezes at 273.15 K and boils at 373.15 K. The degree size is the same for the Kelvin and Celsius scales. °F 212 -32- °℃ -0 -273 --109----78---- 195 --321 --460 K -100--- +373 --196---77 -273-+0
Transcribed Image Text:16-2 TEMPERATURE SCALES Temperature is commonly measured in terms of three different scales. Celsius Scale In the Celsius scale, water freezes at 0 °C and boils at 100 °C. Fahrenheit Scale In the Fahrenheit scale, water freezes at 32 °F and boils at 212 °F. Absolute Zero The lowest temperature attainable is referred to as absolute zero. It is impossible to cool an object to a temperature lower than absolute zero, which is −273.15 °C. Kelvin Scale In the Kelvin scale, absolute zero is 0 K. In addition, water freezes at 273.15 K and boils at 373.15 K. The degree size is the same for the Kelvin and Celsius scales. °F 212 -32- °℃ -0 -273 --109----78---- 195 --321 --460 K -100--- +373 --196---77 -273-+0
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