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A sample of glucose is combusted in a calorimeter. There is exactly 4985 grams of water...

A sample of glucose is combusted in a calorimeter. There is exactly 4985 grams of water in the surrounding medium. The thermometer reads a temperature of 14.65°C before the reaction.  The final temperature was  52.98°C.  How much heat was absorbed or released by glucose in kilojoules?  

Hint: What is the system? What are the surroundings? What is the sign (+/-) of q for the system? For the surroundings?

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