Part I. (8 points) Multiple choice questions

Question 1: Is the energy released or consumed in the following process?

• A. Released
• B. Consumed
• C. A and B
• D. Neither A nor B

Question 2: The following diagrams represent three systems in thermodynamics. What are they from left to right?

• A. Isolated, open, closed
• B. Closed, open, isolated
• C. Open, isolated, closed
• D. Isolated, closed, open

Question 3: A reaction under certain conditions has an enthalpy change of $\Delta H = -118 \text{ kJ}$. This means that $118 \text{ kJ}$ of heat would be liberated

• A. if the reaction were carried out at constant pressure.
• B. if the reaction were carried out at constant concentrations.
• C. no matter how the reaction were carried out.
• D. if the reaction were carried out at constant volume.

Question 4: A gas at $25.00^\circ\text{C}$ and $0.47 \text{ atm}$ expands from $25.0 \text{ L}$ to $35.0 \text{ L}$. What is the value of the work done on or by the gas? ($1 \text{ L}\cdot\text{atm} = 101.325 \text{ J}$)

• A. $480 \text{ J}$
• B. $3600 \text{ J}$
• C. $-3600 \text{ J}$
• D. $-480 \text{ J}$

Part II. (2 points) Long answer question

Question 5: When fuel is burned in a cylinder equipped with a piston, the volume expands from $0.255 \text{ L}$ to $1.45 \text{ L}$ against an external pressure of $1.02 \text{ atm}$. In addition, $875 \text{ J}$ is emitted as heat. What is the $\Delta E$? ($101.3 \text{ J} = 1 \text{ L}\cdot\text{atm}$)