FOOD ENG Q's
Calculate how much (heat) energy is required to thaw 100 kg of raspberries (82.7% water) from -20.55°C (-5°F) to 5°C (41°F). (Raspberries Cp=3.9811 J/kg C) Give the final answer in Joules.
How much ice at 0 ºC would it take to cool a can of soda (16 oz. can, empty aluminum can weighs 15 g, Cp of aluminum is 0.88 kJ/kg ºC) from 25 ºC to 5 ºC (ice ends up at 5 ºC)? (1 oz = 28.35g)
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FOOD ENG Q's
apples are peeled, cored, and pureed to produce an unpasteurized applesauce. The applesauce must be heated to 96°C to ensure that it is microbiologically stable for hot fill packaging. A tube-in-tube heat exchanger is used to heat the applesauce (Cp = 3.83 kJ/kgK) from an initial temperature of 10°C to the target temperature. Steam at 130°C with 70% quality is used as the heating medium with the condensate leaving the heat exchanger at 130°C.(b) How much steam (mass flow rate...
FOOD ENG Q's
How many kg of steam will be necessary to heat 3532kg of milk from 20 C to 80 C if the steam is at 300Kpa and 100% quality and the condensate leaves at 100C? Cp of milk is 4.06 kJ/kgC. Assume milk has same density as water and heat from the steam goes to the milk
(0%) Problem 4: Soda from a ms= 12 oz can at temperature Ts = 11.5°C is...
(0%) Problem 4: Soda from a ms= 12 oz can at temperature Ts = 11.5°C is poured in its entirely into a glass containing a mass m/= 0.19 kg amount of ice at temperature Ty=-18.5°C. Assume that ice and water have the following specific heats: c1=2090 J/(kg•°C) and cs = 4186 J/(kg:°C), and the latent heat of fusion of ice is Ir= 334 kJ/kg. In this problem you can assume that I kg of either soda or water corresponds to...
y pay tom H2o Oy soon as to, or forved othe 3. Which of the following...
y pay tom H2o Oy soon as to, or forved othe 3. Which of the following describes your average heat of neutralization? Why? • Accurate and precise jsoulade . Accurate but not precise does not . Precise but not accurate • Neither accurate nor precise. change halpy of ation. 6. On a hot day, you take a six-pack of soda on a picnic, cooling it with ice. Each empty aluminum can weighs 12.5 g and contains 355 mL of soda....
(20%) Problem 2: A piece of unknown material has a mass of m, = 0.79 kg and an initial temperature of Tu = 79°C. The s...
(20%) Problem 2: A piece of unknown material has a mass of m, = 0.79 kg and an initial temperature of Tu = 79°C. The specific heat of water is cw = 4.180 x 102 J/(kg:°C). 50% Part (a) The sample of material is dropped into my = 1.4 kg of water at T = 19°C in a calorimeter. The calorimeter reaches a final temperature of Te = 34°C. Enter an expression for the specific heat of the unknown material,...
) What is the final equilibrium temperature when 40.0 grams of ice at -12.0°C is mixed...
) What is the final equilibrium temperature when 40.0 grams of ice at -12.0°C is mixed with 20.0 grams of water at 32.0°C? The specific heat of ice is 2.10k]/kg C, the heat of fusion for ice at O'C is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg C, and the heat of vaporization of water at 100°C is 2,256 kJ/kg. How much energy will it take to cool the water to 0 °C? How much energy will it...
IIVIT ILI I ILUDLSU DL. U ZUI12.01.UUIII DUDULL. 11/21/2011.J.UUI1I LUDU. 12/UZUI11.J.UUI11 (0%) Problem 4: Soda from...
IIVIT ILI I ILUDLSU DL. U ZUI12.01.UUIII DUDULL. 11/21/2011.J.UUI1I LUDU. 12/UZUI11.J.UUI11 (0%) Problem 4: Soda from a m3= 12 oz can at temperature Tg = 15°C is poured in its entirety into a glass containing a mass mī= 0.13 kg amount of ice at temperature T,= -15.5°C. Assume that ice and water have the following specific heats: 0,= 2090 J/(kg.°C) and cs= 4186 J/(kg.°C), and the latent heat of fusion of ice is Lf= 334 kJ/kg. In this problem you...
A 200 g aluminum calorimeter can contain 500 g of water at 20 C. A 100...
A 200 g aluminum calorimeter can contain 500 g of water at 20 C. A 100 g piece of ice cooled to -20 C is placed in the calorimeter. Find the final temperature of the system, assuming no heat losses. (Assume that the specific heat of ice is 2.0 kJ/kg K) A second 200 g piece of ice at -20 C is added. How much ice remains in the system after it reaches equilibrium? Would your answer to part b...
Please show your work! 6. (2 points) You are given 400 g of coffee (same specific heat as water) at 95.0°C (too hot to S...
Please show your work!
6. (2 points) You are given 400 g of coffee (same specific heat as water) at 95.0°C (too hot to SS drink). How much ice (at 0.0°C) must be added to your coffee in order to cool it to 50.0°C? Neglect heat content of the cup and heat exchanges with the surroundings. Latent heat of fusion of ice is 3.33x10 J/kg: Specific heat of ice is 2100 J/(kgx°C). You must know the specific heat of water....
1. The physician has recommended that a patient with pain from osteoarthritis take off excess pounds....
1. The physician has recommended that a patient with pain from osteoarthritis take off excess pounds. The Dr. explains that being overweight increases the load put on the joints. The patient weighs 110 kg. This is ______lb. 2. Ordered: Ibuprophen 0.5 g Have avaliable : Ibuprophen 250 mg tablets Give: ____________tablets? 3. For dinner, the patient took 1 cup of milk, 3 Tbs of ice cream (this is counted as liquid intake), and a 12 oz can of soda. What...
(0%) Problem 4: Soda from a ms= 12 oz can at temperature Ts = 11.5°C is poured in its entirely into a glass containing a mass m/= 0.19 kg amount of ice at temperature Ty=-18.5°C. Assume that ice and water have the following specific heats: c1=2090 J/(kg•°C) and cs = 4186 J/(kg:°C), and the latent heat of fusion of ice is Ir= 334 kJ/kg. In this problem you can assume that I kg of either soda or water corresponds to...
y pay tom H2o Oy soon as to, or forved othe 3. Which of the following describes your average heat of neutralization? Why? • Accurate and precise jsoulade . Accurate but not precise does not . Precise but not accurate • Neither accurate nor precise. change halpy of ation. 6. On a hot day, you take a six-pack of soda on a picnic, cooling it with ice. Each empty aluminum can weighs 12.5 g and contains 355 mL of soda....
(20%) Problem 2: A piece of unknown material has a mass of m, = 0.79 kg and an initial temperature of Tu = 79°C. The specific heat of water is cw = 4.180 x 102 J/(kg:°C). 50% Part (a) The sample of material is dropped into my = 1.4 kg of water at T = 19°C in a calorimeter. The calorimeter reaches a final temperature of Te = 34°C. Enter an expression for the specific heat of the unknown material,...
) What is the final equilibrium temperature when 40.0 grams of ice at -12.0°C is mixed with 20.0 grams of water at 32.0°C? The specific heat of ice is 2.10k]/kg C, the heat of fusion for ice at O'C is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg C, and the heat of vaporization of water at 100°C is 2,256 kJ/kg. How much energy will it take to cool the water to 0 °C? How much energy will it...
IIVIT ILI I ILUDLSU DL. U ZUI12.01.UUIII DUDULL. 11/21/2011.J.UUI1I LUDU. 12/UZUI11.J.UUI11 (0%) Problem 4: Soda from a m3= 12 oz can at temperature Tg = 15°C is poured in its entirety into a glass containing a mass mī= 0.13 kg amount of ice at temperature T,= -15.5°C. Assume that ice and water have the following specific heats: 0,= 2090 J/(kg.°C) and cs= 4186 J/(kg.°C), and the latent heat of fusion of ice is Lf= 334 kJ/kg. In this problem you...
Please show your work!
6. (2 points) You are given 400 g of coffee (same specific heat as water) at 95.0°C (too hot to SS drink). How much ice (at 0.0°C) must be added to your coffee in order to cool it to 50.0°C? Neglect heat content of the cup and heat exchanges with the surroundings. Latent heat of fusion of ice is 3.33x10 J/kg: Specific heat of ice is 2100 J/(kgx°C). You must know the specific heat of water....
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