Suppose we pour 200g of hot tea at 95 degrees Celsius into a 150g, 25 degree Celsius glass cup. Suppose no heat is lost to the surroundings. What will be the final temperature of the mixture when equilibrium is reached?

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.