Calculate the heat transferred from a 55 g iron nail that is

Calculate the heat transferred from a 5.5 g iron nail that is cooled from 31.0 degrees Celsius to 25.0 degrees Celsius? The specific heat of iron is 0.450 J/g degree C

Answer:

37 ºC to 25 ºC = - 12 Celsius

dH = m C dT

dH = 5.5 grams (0.450 J/ gK) (-12 C)

dH = - 29.7 Joules

the dH for the Iron, rounded to 2 sig figs is
dH = -30. Joules