How much energy (in J) is lost when a sample of iron with a mass of 25.3 g cools from 70.0 ∘C to 29.0 ∘C?

Answer 1

What is the specific heat for iron? From the internet it is 0.461 J/g/deg

q = mCΔT

q = heat =?

m = mass = 25.3 g

C = sp heat = 0.461 J/g/degΔ

ΔT = change in temp = 41 deg

q = (25.3 g)(0.461 J/g/deg)(41deg) = 425 J of heat is lost