Question

Sabendo que 1cal= 4,18J
A) transforme 15 cal em J.
B) transforme 600 J em caloria

Answer 1

a)1cal --- 4,18J
15 cal --- x

x = 15.(4,18) = 62,7 J

b)
1 cal --- 4,18J
     x  ---  600J

x = (600)/(4,18) ~= 143,54 calorias