studentkakraaLv1

27 Apr 2023

11. 

60 grams of water at 70C are mixed with an equal amount of water at 30C in a completely insulated container. The final temperature of the water is 50C.

   (a) How much heat is last by the hot water?

____ cal (magnitude only)

   (b) How much heat is gained by the cold water?

____  cal (magnitude only)

   (c) What happens to the total amount of internal energy of the system?

◯ remains unchanged

◯ doubles

◯ halves