The total internal energy change for a reversible isothermal cycle is

Assertion : Mass and volume are extensive properties.
Reason : Mass / volume is also an extensive parameter.

Which is not the correct relation between enthalpy $(\Delta H)$ and internal energy $(\Delta E)$?

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

Calculate the work done in joule if $2 \ mol$ of an ideal gas expands isothermally from $15.5 \ dm^3$ to $20 \ dm^3$ at a constant external pressure of $1 \ atm$. (in $J$)

For the reaction $N_{2(g)} + 3H_{2(g)} \to 2NH_{3(g)}$,the relationship between $\Delta H$ and $\Delta U$ is: