Work, Heat, Energy — MCQ Practice

An ideal gas expands isothermally and reversibly from $10\,\text{L}$ to $20\,\text{L}$ at $300\,\text{K}$. If the number of moles of gas is $2$, calculate the work done by the gas. (Given: $R = 8.314\,\text{J mol}^{-1}\text{K}^{-1}$)

A system absorbs $500\,\text{J}$ of heat and performs $200\,\text{J}$ of work on the surroundings. What is the change in internal energy ($\Delta U$) of the system?

Which of the following statements is INCORRECT regarding internal energy ($U$)?

A gas is compressed from $5\,\text{L}$ to $2\,\text{L}$ against a constant external pressure of $2\,\text{atm}$. During this process, the system releases $100\,\text{J}$ of heat. Calculate the change in internal energy ($\Delta U$) of the system. (Given: $1\,\text{L atm} = 101.3\,\text{J}$)

An ideal gas undergoes an adiabatic expansion. Which of the following statements is TRUE?

Which of the following processes results in $\Delta U = q$?