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Heat Transfer

In: Film and Music

Submitted By cuziam1234
Words 482
Pages 2
Specific Heat and Heat Exchange Problems

1. How much heat is required to raise 80.0 g of aluminum from 12°C to 46°? [2 448 J]

2. How much heat is required to raise 30.0 kg of iron from 40°C to 180°C ? [1 620 kJ]

3. How much heat must mercury lose so 290 g cools from 116°C to 31°C? [-3 451 J]

4. What temperature results when 500.0 J of heat are added to 50.0 g of silver at an initial temperature of 25 °C? [67°C]

5. What mass of copper at a temperature of 15°C must be used so 300.0 J of heat will cause it to warm to 35 °C? [38 g]

6. To warm 250 g of glycerine from 21°C to 46°Crequuired 3625 J of heat. Calculate the specific heat of glycerine. [0.58 J/g°C]

7. Two hundred grams of turpentine was heated from 20°C to 55°C by the cooling of 147 g of water from 75°C to 55°C. [1.76 J/g°C]

8. How much water at 25°C must be added to 15 kg of water at 10 °C so that the mixture becomes 20°C? [30 kg]

9. If 70.0 g of water at 95°C was mixed with 59 g of water at 25°C, what is the final temperature of the mixture? [63 °C]

10. What mass of copper at 90°C must be added to 200 g of water at 10°C so the final temperature of the mixture is 20°C? [300 g]

11. What mass of aluminum at 150°C must be added to 7.0 kg of water initially at 15°C if both materials end up at 30°C? [3.6kg]

12. When 200 g of mercury at 100°C was mixed with some water at 20°C, the final temperature reached 25°C. Calculate the mass of the water. [100 g]

13. A metallic object with a mass of 60.0 g and an initial temperature of 75°Cwas placed into 20.0 g of water initially at 10.0°C. The water stabilized at 25°C. Find the specific heat capacity of the metal and determine what metal this might be. [c=0.42 J/g°C]

14. To make a candle, 75 g of liquid wax at 95°C was poured into a 40.0 g iron mould at 20.0°C. What is the final temperature...

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