jvoliveiraneonp55fex 18/06/2014 1kg = 1000gQ = m * c * /T12.000 = 1000 * 0,6 * (tf - (-30)12000 = 600tf + 18.000-6000 = 600tf-6000/600 = tftf = -10°C
jvoliveiraneonp55fex
1kg = 1000g
Q = m * c * /T
12.000 = 1000 * 0,6 * (tf - (-30)
12000 = 600tf + 18.000
-6000 = 600tf
-6000/600 = tf
tf = -10°C