The enthalpies of all elements in their standard states are:

In an isothermal and reversible process,$1.6 \times 10^{-2} \ kg$ of $O_2$ expands from $10 \ dm^3$ to $100 \ dm^3$ at $300 \ K$. The work done in the process is: $(R = 8.314 \ J \ K^{-1} \ mol^{-1})$ (in $J$)

For an endothermic process,$\Delta H$ will be ...... .

Which of the following is not a state function of a thermodynamic system?

Explain the enthalpy of dilution.

The relation between $\Delta E$ and $\Delta H$ is