Which of the following is true for the value of $\Delta H - \Delta U$ at constant volume?

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

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

The heat of reaction at constant pressure is given by

The correct statement amongst the following is $:$

Which of the following is a correct statement for a thermodynamic system?