Answer to Question #324530 in General Chemistry for nina

Question

How much heat (in joules) is used to heat a 39.79 gram sample of iron from 9.23 degrees Celcius to 100.00 degrees Celcius if the specific heat of Fe is 0.450 j/g*C? Record your answer to 2 decimal spaces.

Answer 1

H = mc∆x where

M = mass

C = SHC

∆x = change in temperature

H = 39.79*0.450*(100-9.23)

H = 1625.282235J = 1625.28J (2 d.p)