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A chemical reaction gives off 2,100 kJ of heat energy. About how many calories is this?

 Sep 25, 2014

Best Answer 

 #1
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A kilojoule is approximately 239.0057 calories.

Thus 2100 kj = 2100 * 239.0057 calories = 501,912 calories.

(If you want food calories, divide this answer by 1000.)

 Sep 25, 2014
 #1
avatar+23245 
+5
Best Answer

A kilojoule is approximately 239.0057 calories.

Thus 2100 kj = 2100 * 239.0057 calories = 501,912 calories.

(If you want food calories, divide this answer by 1000.)

geno3141 Sep 25, 2014

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