Question

During a process an ideal gas expands to compress the spring such that $10kJ$ of energy is stored in the spring and $2kJ$ of heat is released from gas to the surroundings. The change in internal energy of the gas is

• A. $-12kJ$
• B. $12kJ$
• C. $8kJ$
• D. $-8kJ$

Answer 1

Answer: (A)

$dU=dQ-dW$