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0.5kg of water at 80°C is poured into a copper

vesselat 10°e. The final temperature of the water

inthecopper vessel is 70°C and the specific heat

capacityof copper is 400 J kg-1°C-I.

(a) Findthe energy loss of the water.

(b) Findthe energy gained by the copper vessel.

What do you assume when you obtain the

answer?

(c) What is the mass of the copper vessel?

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