1125 J of energy is used to heat 250 g of iron. After heating, the final temperature of the iron is measured as 55 °C. The specific heat capacity of iron is 0.45 J/(g·°C).

Question

What was the initial temperature of the iron?
A. 45
B. 55
C. 20
D. 35
I don't know how to do this

Answer 1

q = 1125 = mass Fe x specific heat Fe x (Tfinal-Tinitial)
Substitute and solve for Tinitial.
Post your work if you get stuck.

Answer 2

thanks

Answer 3

what did you get