# Hess's Law - Temperature

Please answer step-by-step with solutions:

A 150.0 iron bar at 330 degrees C is put in 1.00 kg water at 20.0 degrees C. What is the final temperature of the bar?

(Hint: bar and water will be the same at the end.)

Cs = 0.45J/(grams degree C) for iron

Cs = 4.18J/(grams degree C) for water

https://brainmass.com/chemistry/hess-law/hess-law-temperature-27623

#### Solution Preview

Dear student,

Assuming all of the heat released from the iron bar absorbed by water, you can than set up the following two equations:

For the heat released by the iron ...

#### Solution Summary

The solution is given step-by-step to solve for T2.

$2.19