1. What is the final temperature when a 3.0 kg gold bar at 99°C is dropped into 0.22 kg of water at 25°C?

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Table 4
Specific Heat Capacities
Substance
Cp (J/kg•°C)
Substance
Cp (J/kg•°C)
aluminum
8.99 x 102
lead
1.28 x 102
copper
3.87 x 102
mercury
1.38 x 102
glass
8.37 x 102
silver
2.34 x 102
gold
1.29 x 102
2.01 x 103
steam
ice
2.09 x 103
4.186 x 10'
water
iron
4.48 x 102
Transcribed Image Text:Table 4 Specific Heat Capacities Substance Cp (J/kg•°C) Substance Cp (J/kg•°C) aluminum 8.99 x 102 lead 1.28 x 102 copper 3.87 x 102 mercury 1.38 x 102 glass 8.37 x 102 silver 2.34 x 102 gold 1.29 x 102 2.01 x 103 steam ice 2.09 x 103 4.186 x 10' water iron 4.48 x 102
PRACTICE С
Calorimetry
1. What is the final temperature when a 3.0 kg gold bar at 99°C is dropped
into 0.22 kg of water at 25°C?
2. A 0.225 kg sample of tin initially at 97.5°C is dropped into 0.115 kg of
water. The initial temperature of the water is 10.0°C. If the specific heat
capacity of tin is 230 J/kg•°C, what is the final equilibrium temperature of
the tin-water mixture?
3. Brass is an alloy made from copper and zinc. A 0.59 kg brass sample at
98.0°C is dropped into 2.80 kg of water at 5.0°C. If the equilibrium tem-
perature is 6.8°C, what is the specific heat capacity of brass?
4. A hot, just-minted copper coin is placed in 101 g of water to cool. The
water temperature changes by 8.39°C, and the temperature of the coin
changes by 68.0°C. What is the mass of the coin?
Transcribed Image Text:PRACTICE С Calorimetry 1. What is the final temperature when a 3.0 kg gold bar at 99°C is dropped into 0.22 kg of water at 25°C? 2. A 0.225 kg sample of tin initially at 97.5°C is dropped into 0.115 kg of water. The initial temperature of the water is 10.0°C. If the specific heat capacity of tin is 230 J/kg•°C, what is the final equilibrium temperature of the tin-water mixture? 3. Brass is an alloy made from copper and zinc. A 0.59 kg brass sample at 98.0°C is dropped into 2.80 kg of water at 5.0°C. If the equilibrium tem- perature is 6.8°C, what is the specific heat capacity of brass? 4. A hot, just-minted copper coin is placed in 101 g of water to cool. The water temperature changes by 8.39°C, and the temperature of the coin changes by 68.0°C. What is the mass of the coin?
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