Hess' Law & Calorimetry

Question

If 3.000 g of iron metal are reacted in a calorimeter with a heat capacity of 350.0 J/°C, what would be the final temperature of the calorimeter if its initial temperature were 20.0°C?

Answer 1

There isn't sufficient information provided to answer this question. We would either need to know the amount of heat produced, or if Hess' Law were to actually be involved, we'd need some equations showing different reactions of iron metal along with their associated ∆H values.