A combination of 0.35 kg of water at 25.00 ° C, 0.53 kg of aluminum at...
A combination of 0.35 kg of water at 25.00 ° C, 0.53 kg of aluminum at 32.00 ° C and 0.45 kg of copper at 90.00 ° C are mixed in an insulated container and allowed to reach thermal equilibrium. Ignore any transfer of energy to or from the container. What is the final temperature of the mixture? Note: consider C water = 4186 J / K Kg, CAl = 900 J / K Kg, C cu = 387 J / K Kg
|
a |
76.55 °C |
|
b |
38.38 °C |
|
c |
5.29 °C |
|
d |
32.08 °C |
|
e |
Ninguna de las anteriores |
Homework Answers
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A combination of 0.35 kg of water at 25.00 ° C, 0.53 kg of
aluminum at...
A combination of 0.250 kg of water at 20.0°C, 0.400 kg of aluminum at 26.0°C, and...
A combination of 0.250 kg of water at 20.0°C, 0.400 kg of aluminum at 26.0°C, and 0.100 kg of copper at 100°C is mixed in an insulated container and allowed to come to thermal equilibrium. Ignore any energy transfer to or from the container. What is the final temperature of the mixture?
3. A 100 g block of copper initially at 60°C is placed in contact with a...
3. A 100 g block of copper initially at 60°C is placed in contact with a 300 g block of aluminum initially at 30°C in an insulated container. A. Identify the block that loses thermal energy. (5 pts) B. Calculate the final equilibrium temperature of the two blocks. (15 pts) Copper a(Cu) = 17 x 10-61°C Ccu = 0.0923 cal/g.K = 386 J/kg-K LF (Cu) = 207 kJ/kg
9) A lab assistant pours 330 g of water at 45°C into an 855-g aluminum container...
9) A lab assistant pours 330 g of water at 45°C into an 855-g aluminum container that is at an initial temperature of 10°C. The specific heat of aluminum is 900 J/kg K, and that of water is 4186 J/kg K. What is the final temperature of the system, assuming no heat is exchanged with the surroundings? A) 35°c 9) B) 28°C C)32°C D) 33°C
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(8%) Problem 7: A 0.25-kg aluminum bowl holding 0.75 kg of soup at 25.0°C is placed in a freezer. show answer Incorrect Answer What is the final temperature, in degrees Celsius, if 377 kJ of energy is transferred from the bowl and soup, assuming the soup’s thermal properties are the same as that of water? Specifically, you can assume the latent heat of fusion for the soup is 334 kJ/kg. Specific heat (c) kcal/kg.C 0.215 0.20 Substances Solids Aluminum J/kg.C...
An aluminum tea kettle of 0.45-kg containing 2.40-kg of water at 25°C is placed on a...
An aluminum tea kettle of 0.45-kg containing 2.40-kg of water at
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will it take to bring
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required to boil all the
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Problem 5: A 95-g aluminum calorimeter contains 241 g of water. The aluminum and water are...
Problem 5: A 95-g aluminum calorimeter contains 241 g of water. The aluminum and water are initially in thermal equilibrium at a temperature of 9.3°C. Two solid objects are then placed in the water. One is a 50.3-g piece of copper with a specific heat of 390 J/(kg:°C) and an initial temperature of 81.2°C. The other is of unknown material with a mass of 69 g and an initial temperature of 100°C. The entire system reaches thermal equilibrium at a...
A 0.15 kg ice is placed into an aluminum cup with 0.3 kg water in it....
A 0.15 kg ice is placed into an aluminum cup with 0.3 kg water in it. The initial temperature of cup is 60°C and the mass of the aluminum cup is 0.2 kg. What is the final temperature of the water when the system come to equilibrium. See the equation [3] in the manual. Here use cc=900 J/kg°C, Cw=4186 J/kg°C and Ci=2090 J/kg°C. And L=333000 J/kg The answer keep one digit under decimal point. (For example 10.3)
To determine the specific heat of an object, a student heats it to 100 ∘C in...
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SETR To determine the specific heat of an object, a student heats it to 100 C...
SETR To determine the specific heat of an object, a student heats it to 100 C in boiling water. She then places the 50.1 g object in a 187 g aluminum calorimeter containing 105 g of water. The aluminum and water are initially at a temperature of 19.9 °C, and are thermally insulated from their surroundings. Part A If the final temperature is 22.4 C, what is the specific heat of the objed? Express your answer using two significant figures....
3. A 100 g block of copper initially at 60°C is placed in contact with a 300 g block of aluminum initially at 30°C in an insulated container. A. Identify the block that loses thermal energy. (5 pts) B. Calculate the final equilibrium temperature of the two blocks. (15 pts) Copper a(Cu) = 17 x 10-61°C Ccu = 0.0923 cal/g.K = 386 J/kg-K LF (Cu) = 207 kJ/kg
9) A lab assistant pours 330 g of water at 45°C into an 855-g aluminum container that is at an initial temperature of 10°C. The specific heat of aluminum is 900 J/kg K, and that of water is 4186 J/kg K. What is the final temperature of the system, assuming no heat is exchanged with the surroundings? A) 35°c 9) B) 28°C C)32°C D) 33°C
An aluminum tea kettle of 0.45-kg containing 2.40-kg of water at
25°C is placed on a
burner. Assuming that the burner is rated at 2000 Watt, how long
will it take to bring
the water to a boil? (b) Once boiling begins, how much time is
required to boil all the
water out of the tea kettle? Assume that no energy is lost in this
process.
Latent Heat of Fusion Latent Heat of Vaporization Specific Heats SubstcJkg. C cal/g- CS...
Problem 5: A 95-g aluminum calorimeter contains 241 g of water. The aluminum and water are initially in thermal equilibrium at a temperature of 9.3°C. Two solid objects are then placed in the water. One is a 50.3-g piece of copper with a specific heat of 390 J/(kg:°C) and an initial temperature of 81.2°C. The other is of unknown material with a mass of 69 g and an initial temperature of 100°C. The entire system reaches thermal equilibrium at a...
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