The enthalpies of the elements in their standard states are assumed to be

The enthalpy of a reaction at $273 \, K$ is $-3.57 \, kJ$. If $\Delta C_p = 0$,what will be the enthalpy of the reaction at $373 \, K$?

Identify the process that proceeds with no heat exchange between the system and the surrounding.

Calculate the work done when $2$ moles of an ideal gas expand from a volume of $5 \ dm^3$ to $7 \times 10^{-3} \ m^3$ against a constant external pressure of $2.02 \times 10^5 \ Nm^{-2}$. (in $kJ$)

Which of the following relations is correct for an adiabatic process?

$A$ certain mass of a gas was brought from state $A$ to $B$ by following three different paths, namely $1$, $2$ and $3$, respectively. Which of the following relations is correct for the work done?