Suppose you have a mass of hot water at 80C in a small, sealed, insulated contai

Question

Suppose you have a mass of hot water at 80C in a small, sealed, insulated container and a larger mass of water at room temperature (20 C) in a cup. The container is submerged in the water in the cup and left there for a long time.

A) What do you predict will be the final temperature of the water in the container? Will it be midway between 80C and 20C? Or will it be closer to 80C or closer to 20C?

B) What do you predict will be the final temperature of the water in the cup? Will it be midway between 80C and 20C? Or will it be closer to 80C or closer to 20C? Why?

C) Is it possible knowing just the initial temperatures of water (and not the masses) to predict exactly what the final temperature will be? Explain!

Explanation / Answer

A)If the container of hot water is perpectly insulator then there is no exchange of heat between hot water and cold water by conduction.

B)closer to 20 degrees,because huge mass of water

C)masses also klshould be known.

Q=ms$T

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