An isolated system can exchange ........ with the surroundings.

At $61 \ K$, one mole of an ideal gas of $1.0 \ L$ volume expands isothermally and reversibly to a final volume of $10.0 \ L$. What is the work done in the expansion (in $L \ atm$)?

For a chemical reaction,when does $\Delta H = \Delta U$ occur?

Which of the following is a state function: $(i)$ height of a hill,$(ii)$ distance covered in climbing the hill,$(iii)$ change in energy while climbing the hill?

The law of $Lavoisier$ and $Laplace$ illustrates:

Which of the following reactions performs zero work?