# Chapter 5 Principles of Chemical Reactivity: Energy and Chemical Reactions - Study Questions - Page 217j: 120

#### Work Step by Step

a) $W=-P\Delta V$ $W=-101\ kPa\times -22.4\ L\div 1000\ L/m^3=2.26\ kJ$ b)$\Delta H= \Delta U +P\Delta V=\Delta U-W$ $\Delta U=-483.6\ kJ+2.26\ kJ$ $\Delta U=-481.3\ kJ$

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.