6. A mass of 0.20 kg of metal having a temperature of 100 deg. C is plunged into 0.04kg of water at 20 deg. C The temperature of the water and metal becomes 48 deg.C. The latent heat of ice at 0 eg. C is 335 kJ/kg-K and the specific heat capacity ofwater is 4.19 kJ/kg-K. Assuming no heat loss to the surroundings, determine thespecific heat capacity of the metal in kJ/kg-K

Use the concept of calorimetry which states that heat loss by metal is equal to heat gain by…

Answered: 6. A mass of 0.20 kg of metal having a…

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.57P

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The procedure to inflate a hot-air balloon requires a fan to move an initial amount of air into the balloon envelope followed by heat transfer from a propane burner to complete the inflation process. After a fan operates for 30 minutes with negligible heat transfer with the surroundings, the air in an initially deflated balloon achieves a temperature of 80°F and a volume of 49,100 ft3. Next the propane burner provides heat transfer as air continues to flow into the balloon without use of the fan until the air in the balloon reaches a volume of 65,425 ft3 and a temperature of 210°F. Air at 77°F and 14.7 lbf/in.2 surrounds the balloon. The net rate of heat transfer is 8 x 106 Btu/h.Ignoring effects due to kinetic and potential energy, modeling the air as an ideal gas, and assuming the pressure of the air inside the balloon remains the same as that of the surrounding air, determine:(a) the magnitude of the fan power, in hp.(b) the time required for full inflation of the balloon, in min.
A 390-g metal container, insulated on the outside, holds 170.0 g of water in thermal equilibrium at 21.0°C. A 18.0-g ice cube, at -15.0°C, is dropped into the water, and when thermal equilibrium is reached the temperature is 12.0°C. Assume there is no heat exchange with the surroundings. The specific heat capacity of water is 4190 J/kg ∙ K, the specific heat capacity of ice is 2090 J/kg ∙ K and the heat of fusion is 3.34 × 105 J/kg. What is the specific heat capacity of the metal of the container?
How much ice (by mass) at a temperature of -19.9 degrees Celsius must be added to 325g of liquid water at a temperature of 60.1 degrees Celsius in order for the final temperature of both to reach 21 degrees Celsius. c of ice=2100 J/kg/C c of water=4190 J/kg/C Latent heat of fusion of water=3.34E5 J/kg/C a. .115kg b. 12kg c. 5 lbs d. .191kg
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