AliasY518441 AliasY518441

30-10-2022
Physics

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How many kilocalories of heat does an expenditure of 597 kJ produce? Answer must be in kcal

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DelmarA596326 DelmarA596326

30-10-2022

Recall,

1.0 cal = 4.184 J

1.0J = 1.0 cal/4.184 J = 1 x 10^-3 kcal/4.184 J

597 kJ = 597 x 10^3 J

Thus,

597 x 10^3 J = 597 x 10^3 J x 1 x 10^-3 kcal/4.184 J

= 597/4.18 kcal

= 142.8 kcal

The answer is 142.8 kcal

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