Which law of thermodynamics provides the definition of temperature?

To calculate the amount of work done in joules during reversible isothermal expansion of an ideal gas,the volume must be expressed in

$1 \, mol$ of an ideal gas is compressed reversibly at a constant temperature of $27 \, ^oC$ from $1 \, bar$ to $4 \, bar$. Calculate the work done in $kJ$.

The work done during the expansion of a gas from a volume of $4 \ dm^3$ to $6 \ dm^3$ against a constant external pressure of $3 \ atm$ is $(1 \ L \ atm = 101.32 \ J)$ $...... \ J$

Explain: Enthalpy as a state function.

Which of the following is an extensive property?