Question

Sabendo que 1cal=4,185 transforme 20 kcal em Jowle

Answer 1

1 cal = 4,18 J

1 kcal = 4 180 J

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Assim:

1 kcal --------- 4 180 J
20 kcal -------- x J

x = 20 · 4 180

x = 83 600 J