Answer
35 kJ of energy
Work Step by Step
1 kcal = 1000 cal
8.4 kcal x 1000 cal / 1 kcal = 8400 cal
1 cal = 4.184 J
8400 cal x 4.184 J / 1 cal = 35145.6 J
1 kJ = 1000 J
35145.6 J x 1 kJ/ 1000 J = 35.15 kJ
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.