1. To what temperature will 8200 JJ of heat raise 3.5 kg of water that is initially at 19.0 ⁰C? The specific heat of water is 4186 J/kg?C⁰.

2. How much heat (in joules) is required to raise the temperature of 32.0 kg of water from 24 ⁰C to 93 ⁰C? The specific heat of water is 4186 J/kg?C⁰

3. (a). How much energy is required to bring a 1.6-L pot of water at 24 ⁰C to 100 ⁰C? The specific heat of water is 4186 J/kg?C⁰.

(b). For how long could this amount of energy run a 60-W lightbulb?

4. How much heat is needed to melt 12.50 kg of silver that is initially at 25 ⁰C? The melting point of silver is 961 ⁰C, the heat of fusion is 88 kJ/kg, the specific heat is 230 J/kg?C⁰.

5. High-altitude mountain climbers do not eat snow, but always melt it first with a stove. To see why, calculate the energy absorbed from a climber's body under the following conditions. The specific heat of ice is 2100 J/kg?C⁰, the latent heat of fusion is 333 kJ/kg the specific heat of water is 4186 J/kg?C⁰.

Calculate the energy absorbed from a climber's body if he eats 0.90 kg of -15 ⁰C snow which his body warms to body temperature of 37 ⁰C.

6. A cube of ice is taken from the freezer at -6.5 ⁰C and placed in a 75-gg aluminum calorimeter filled with 300 g of water at room temperature of 20.0 ⁰C. The final situation is observed to be all water at 17.0 ⁰C. The specific heat of ice is 2100 J/kg?C⁰, the specific heat of aluminum is 900 J/kg?C⁰ , the specific heat of water is 4186 J/kg?C⁰, the heat of fusion of water is 333 kJ/Kg

What was the mass of the ice cube?

7. A major source of heat loss from a house in cold weather is through the windows.

Calculate the rate of heat flow by conduction through a glass window 2.0 m * 1.5 m in area and ? = 2.6 mm thick (Figure 1), if the temperature at the inner and outer surface is 15.0 ⁰C. Assume that there are strong gusty winds and the external temperature is -12.0 ⁰C.

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