energy transfer question

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Smooth Operater

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if 500 g copper at 300 Celsius is placed in contact w/ an equal mass of aluminum, at 0 Celsius, what will be the final temperature of the whole mass, assuming no heat loss to surroundings (suppose it takes twice as much heat to heat 1 gram of aluminum as it does to heat a gram of copper) ?

Anyone knows how to solve it? Thank you.















The correct answer is 100 Celisus.
 
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