Question

100 g of unknown material is heated to 80 oC, and then dropped into 50 g...

100 g of unknown material is heated to 80 oC, and then dropped into 50 g of water at 20 oC in an insulated container. The water temperature rises within a few seconds to 38 oC.

What is the final temperature of the metal?

Find the specific heat of the metal.

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Answer #1

final temperature of water is 380C.so final temperature of the metal is also 380C.

by conservation of heat

heat lose = heat gain

let the specific heat of the metal = cv J/gm-C

100*cv*(80-38) = 50*4.186*(38-20)

cv = 0.897 J/gm-C

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