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Having a hard time figuring out this word problem, Calculate the total amount of heat (kcal)...

Having a hard time figuring out this word problem,

Calculate the total amount of heat (kcal) released when 2.0 X10^5kg of water at 100.00 degrees Celsius cools to room temperature of 25.0 degree

Celsius. (C water, liq= 4.184 J/GX degree Celsius and 4.184 J= cal.

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