Mixing of non-reacting gases is generally accompanied by

For the reaction $A + B \rightarrow C + D + q$,which has a positive entropy change,the reaction:

What is the unit of $\Delta S_m^\circ$?

At the boiling point of water,$900 \ J/g$ of heat is exchanged. What is the increase in entropy in $J \ K^{-1} \ mol^{-1}$?

Which of the following statements is true? The entropy of the universe

Given the entropy of $H_2$ and $HBr$ are $130.6 \, JK^{-1}$ and $198.5 \, JK^{-1}$ respectively,calculate the entropy of $Br_{2(g)}$ in the reaction $H_{2(g)} + Br_{2(g)} \rightarrow 2HBr_{(g)}$ where $\Delta S^{o} = 20.1 \, JK^{-1}$.