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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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georgia22 georgia22
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12 years ago
A 3.00g peanut is burned in a bomb calorimeter containing 1405 g of water. The temperature of the water increases from 25.00oC to 30.25oC. Calculate the energy released per gram of peanut.Can you please show me how you came up with the answer.
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#1
12 years ago
1 calorie raises the temperature of 1g of water by 1 degree Celsius. So we have to take the rise in temperature and multiple it by the grams of water and then divide by 3 to get the calories per a gram.

30.25-25.00=5.25 Celsius.
5.25*1405=7376.25 calories
7376.25/3.00=2458.75 calories

Answer with the correct significant figures:
30.25-25.00=5.25 Celsius.
5.25*1405=7380 calories
7380/3.00= 2460 calories
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