1. Foundations

Energy Balances — Quiz

Test your understanding of energy balances with 5 practice questions.

Practice Questions

Question 1

Which of the following represents the correct mathematical expression for the First Law of Thermodynamics for a closed system?

Question 2

In an open system, which term accounts for the energy associated with the bulk flow of fluid across the system boundary?

Question 3

What is the primary difference between heat capacity at constant pressure ($C_p$) and heat capacity at constant volume ($C_v$) for an ideal gas?

Question 4

For a nonreactive process involving a phase change (e.g., liquid to vapor), which of the following is typically used to calculate the enthalpy change?

Question 5

A system undergoes a process where its internal energy decreases by $100 \text{ kJ}$ and it does $30 \text{ kJ}$ of work on the surroundings. What is the heat transfer (Q) for this process?