2 kg of cold water (C'=4200 J/kgK) is dumped into an insulated container with 10 kg...
Homework Answers
This problem is from topic calorimetry.Heat lost by oil will be equal to heat gained by water.Also temperature change in celsius scale is equal to corresponding temperature change in kelvin scale.
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kg of cold water (C'=4200 J/kgK) is dumped into an insulated
container with 10 kg...
Of ice at -S °C is added to 40 kg of water initially at 20 °C. Assume that the container is well ...
of ice at -S °C is added to 40 kg of water initially at 20 °C. Assume that the container is well insulated. (a) Find the final equilibrium temperature. (5 points) 0b) Caleulate the change in internal energy of the 40 kg water when thermal equilberium is established. (5 points) (c) If a 3 kg piece of copper at 30°C is also added to the original system( Le. system with ice d wat an (7 points) er at their initial...
(17%) Problem 6: You have mw = 4.9 kg of water in an insulated container. You...
(17%) Problem 6: You have mw = 4.9 kg of water in an insulated container. You add mı = 0.15 kg of ice at Ty=-19°C to the water and the mix reaches a final, equilibrium temperature of Tp = 11°C. The specific heats of ice and water are q = 2.10x10 J/(kg-ºC) and cw = 4.19x10 J/(kg:°C), respectively, and the latent heat of fusion for water is 4 = 3.34x10J/kg. Calculate the initial temperature of the water, in degrees Celsius....
Three 110.0-g ice cubes initially at 0°C are added to 0.860 kg of water initially at 21.0°C in an insulated container....
Three 110.0-g ice cubes initially at 0°C are added to 0.860 kg of water initially at 21.0°C in an insulated container. (a) What is the equilibrium temperature of the system? °C (b) What is the mass of unmelted ice, if any, when the system is at equilibrium? 1 kg
Initially you have mW = 3.4 kg of water at TW = 54°C in an insulated container. You add ice at TI = -21°C to the contain...
Initially you have mW = 3.4 kg of water at
TW = 54°C in an insulated container. You add
ice at TI = -21°C to the container and the mix
reaches a final, equilibrium temperature of Tf
= 25°C. The specific heats of ice and water are
cI = 2.10×103J/(kg⋅°C) and
cW = 4.19×103 J/(kg⋅°C),
respectively, and the latent heat of fusion for water is
Lf = 3.34×105 J/kg.
(11%) Problem 7: Initially you have mw = 3.4 kg of...
Problem 5 20 points You place into an insulated container a 1.5 kg of copper initially...
Problem 5 20 points You place into an insulated container a 1.5 kg of copper initially at 70°C. You add to the insulated container water, initially at 20°C to obtain a final temperature of the system equal to 50°C. The specific heat of some materials are given in the table below: Aluminum Copper Material J/g/°C Glass Gold Ice Iron Rubber Silver Water zinc 0.79 0.13 2.1 0.46 0.24 4.2 0.39 0.89 0.38 2 a) [5 points) What is the variation...
4. An electric immersion heater normally takes 100 minutes to bring cold water in insulated container...
4. An electric immersion heater normally takes 100 minutes to bring cold water in insulated container to a certain temperature, after which a thermostat swi heater off. One day the line voltage is reduced by 60% because of overload does the heating of water take now? Assume that the resistance of the heat does not change. switches th How long
is dropped into an insulated container containing 300.0 g of water at 20.0 °C A 36.0...
is dropped into an insulated container containing 300.0 g of water at 20.0 °C A 36.0 g sample of iron, which has a specific heat capacity of 0.449 J-g C and a constant pressure of 1 atm. The initial temperature of the iron is 90.2 °C Assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water. Be sure your answer has the correct number of significant digits. ? X
You drop an ice cube into an insulated container full of water and wait for the...
You drop an ice cube into an insulated container full of water and wait for the ice cube to completely melt. The ice cube initially has a mass of 80.0 g and a temperature of 0°C. The water (before the ice cube is added) has a mass of 660 g and an initial temperature of 20.0°C. What is the final temperature (in °C) of the mixture? (Assume no energy is lost to the walls of the container, or to the...
5 kg of water at 2 ° C, 2 kg of ice at 0 ° C and 5.5 kg of water vapor at 120 ° C and 1.5 bar are...
5 kg of water at 2 ° C, 2 kg of ice at 0 ° C and 5.5 kg of water vapor at 120 ° C and 1.5 bar are mixed in a fixed-volume container. What is the final temperature of the mixture? How much water vapor condenses? Suppose that the volume of the container is constant with a value equal to the initial volume of the water vapor and that the container is insulated. Suppose it is a discontinuous...
3.) A thin-walled container with a hot fluid (T50 °C) is placed in a quiescent cold water bath (Thth10 °C). The interior and exterior sides of the container may be approximated as vertical plates, an...
3.) A thin-walled container with a hot fluid (T50 °C) is placed in a quiescent cold water bath (Thth10 °C). The interior and exterior sides of the container may be approximated as vertical plates, and the container's bottom is well insulated. Find the overall heat transfer coefficient, U, for this arrangement. You can assume the hot fluid has the same properties as water and that the container wall is at a temperature of 30 °C. (30 points) Thin-walled container Cold...
of ice at -S °C is added to 40 kg of water initially at 20 °C. Assume that the container is well insulated. (a) Find the final equilibrium temperature. (5 points) 0b) Caleulate the change in internal energy of the 40 kg water when thermal equilberium is established. (5 points) (c) If a 3 kg piece of copper at 30°C is also added to the original system( Le. system with ice d wat an (7 points) er at their initial...
(17%) Problem 6: You have mw = 4.9 kg of water in an insulated container. You add mı = 0.15 kg of ice at Ty=-19°C to the water and the mix reaches a final, equilibrium temperature of Tp = 11°C. The specific heats of ice and water are q = 2.10x10 J/(kg-ºC) and cw = 4.19x10 J/(kg:°C), respectively, and the latent heat of fusion for water is 4 = 3.34x10J/kg. Calculate the initial temperature of the water, in degrees Celsius....
Three 110.0-g ice cubes initially at 0°C are added to 0.860 kg of water initially at 21.0°C in an insulated container. (a) What is the equilibrium temperature of the system? °C (b) What is the mass of unmelted ice, if any, when the system is at equilibrium? 1 kg
Initially you have mW = 3.4 kg of water at
TW = 54°C in an insulated container. You add
ice at TI = -21°C to the container and the mix
reaches a final, equilibrium temperature of Tf
= 25°C. The specific heats of ice and water are
cI = 2.10×103J/(kg⋅°C) and
cW = 4.19×103 J/(kg⋅°C),
respectively, and the latent heat of fusion for water is
Lf = 3.34×105 J/kg.
(11%) Problem 7: Initially you have mw = 3.4 kg of...
Problem 5 20 points You place into an insulated container a 1.5 kg of copper initially at 70°C. You add to the insulated container water, initially at 20°C to obtain a final temperature of the system equal to 50°C. The specific heat of some materials are given in the table below: Aluminum Copper Material J/g/°C Glass Gold Ice Iron Rubber Silver Water zinc 0.79 0.13 2.1 0.46 0.24 4.2 0.39 0.89 0.38 2 a) [5 points) What is the variation...
4. An electric immersion heater normally takes 100 minutes to bring cold water in insulated container to a certain temperature, after which a thermostat swi heater off. One day the line voltage is reduced by 60% because of overload does the heating of water take now? Assume that the resistance of the heat does not change. switches th How long
is dropped into an insulated container containing 300.0 g of water at 20.0 °C A 36.0 g sample of iron, which has a specific heat capacity of 0.449 J-g C and a constant pressure of 1 atm. The initial temperature of the iron is 90.2 °C Assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water. Be sure your answer has the correct number of significant digits. ? X
3.) A thin-walled container with a hot fluid (T50 °C) is placed in a quiescent cold water bath (Thth10 °C). The interior and exterior sides of the container may be approximated as vertical plates, and the container's bottom is well insulated. Find the overall heat transfer coefficient, U, for this arrangement. You can assume the hot fluid has the same properties as water and that the container wall is at a temperature of 30 °C. (30 points) Thin-walled container Cold...
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