Out of $E, H, G, q$ and $w$,which are state functions?

When a solvent is added to a solution,the heat of the solution $...$.

Calculate the work done in the following reaction at $300 \ K$ and at constant pressure. $(R = 8.314 \ J \ K^{-1} \ mol^{-1})$ $4 \ HCl_{(g)} + O_{2_{(g)}} \rightarrow 2 \ Cl_{2_{(g)}} + 2 \ H_2O_{(g)}$ (in $J$)

For one mole of an ideal gas,which of these statements must be true?
$(a)$ $U$ and $H$ each depend only on temperature.
$(b)$ Compressibility factor $Z$ is not equal to $1$.
$(c)$ $C_{P,m} - C_{V,m} = R$
$(d)$ $dU = C_V dT$ for any process.

Name the energy which arises due to the motion of atoms or molecules in a body. How is this energy affected when the temperature is increased?

The work done when $2 \, mol$ of an ideal gas expands from $5 \, L$ to $15 \, L$ at a temperature of $300 \, K$ is .............. $kJ$.