What is meant by absolute entropy?

Two blocks of the same metal having same mass and at temperatures $T_1$ and $T_2$ respectively,are brought in contact with each other and allowed to attain thermal equilibrium at constant pressure. The change in entropy,$\Delta S,$ for this process is

Which of the following would be expected to have the largest entropy per mole?

For the reaction: $H^{+}_{(aq)} + OH^{-}_{(aq)} \rightarrow H_{2}O_{(l)}$,given the standard molar entropies $S^{o}(298 \ K)$ in $J \ K^{-1} \ mol^{-1}$ as $S^{o}(H^{+}) = 0$,$S^{o}(OH^{-}) = -10.7$,and $S^{o}(H_{2}O) = 70$. The standard entropy change $\Delta S^{o}$ for the reaction is ..... $J \ K^{-1} \ mol^{-1}$.

Which one of the following has $\Delta S^o$ greater than zero?

When disorder of a system increases,the change is said to be