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Calorimetry

Calorimetry. . A student doing an experiment pours 0.190 kg of heated copper shot into a 0.315 kg aluminum calorimeter cup containing 0.100 kg of water at 24°C. The mixture (and the cup) comes to thermal equilibrium at 34°C. What was the initial temperature of the shot? .

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Calorimetry

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  1. Calorimetry

  2. A student doing an experiment pours 0.190 kg of heated copper shot into a 0.315 kg aluminum calorimeter cup containing 0.100 kg of water at 24°C. The mixture (and the cup) comes to thermal equilibrium at 34°C. What was the initial temperature of the shot? 

  3. A student doing an experiment inserts 0.190 kg of an unknown metal, originally at 100.0°C into a 0.315 kg aluminum calorimeter cup containing 0.100 kg of water at 24°C. The mixture (and the cup) comes to a final temperature of 45°C. What is the specific heat of the metal?

  4. At what average rate would heat have to be removed from 1.3 L of each of the following to reduce the liquid's temperature from 16°C to its freezing point in 3.6 min? • Water (Tfreeze = 0°C) • Mercury (Tfreeze = -39°C)

  5. What is the specific heat of a metal substance if 135 kJ of heat is needed to raise 5.10 kg of the metal from 20.0°C to 30.0°C?

  6. When a 290. g piece of iron (c=450. J·kg-1·°C-1), initially heated to 180.0°C, is placed in a 100.0 g aluminum cup (c=920 J·kg-1·°C-1)containing 250.0 g of glycerin, initially at 10.0°C, the equilibrium temperature of the system is observed to be 38.0°C. What is the specific heat capacity of glycerin?

  7. A hot iron horseshoe (m = 0.400 kg) which has just been forged, is dropped into 1.60 L of water in a 0.300 kg iron pot that is initially at room temperature (20.0°C). If the final equilibrium temperature is 25.0°C, estimate the initial temperature of the hot horseshoe.

  8. How long does it take a 750. W coffee pot to heat 0.600 L of water to its boiling point? Assume the water is initially cold tap water, T = 8.00°C, and it is heated in a 360. g aluminum pot.

  9. What will be the equilibrium temperature when a 275 g block of copper at 300.°C is placed in a 152 g aluminum calorimeter cup containing 821 g of water? The calorimeter with water is originally at a temperature of 12.0°C.

  10. When resting, Joshua gives off heat at a rate of approximately 100 W. If he is resting in a tub containing 150 kg of water at 27°C and the heat from Joshua goes only into the water, how many hours will it take for the water temperature to rise to 28°C? (we are making an assumption that no heat enters the air from either Joshua or the tub of water)

  11. 10 people are in a room that measures 4.00 m x 6.00 m x 3.00 m and has an initial air temperature of 20.0°C. Each person releases heat at a rate of 100. W. What is the temperature of the room after 10 minutes with the people hanging out there? Note: Density of air = 1.20 kg·m-3 cair = 1005 J·kg-1·°C-1

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