The evaporation of water is a:

Calculate the work done during compression of $2 \ mol$ of an ideal gas from a volume of $1 \ m^3$ to $10 \ dm^3$ at $300 \ K$ against a constant external pressure of $100 \ kPa.$

In an endothermic reaction,the value of $\Delta H$ is

An ideal gas is expanded from $1 \times 10^{-3} \,m^3$ to $1 \times 10^{-2} \,m^3$ against a constant external pressure of $1 \times 10^5 \,N/m^2$ at $300 \,K$. The work done is

Consider the expansion given in problem $6.2$,for $1 \, mol$ of an ideal gas conducted reversibly.

In which of the following processes does the internal energy of a system remain constant?