The increase in entropy in $J K^{-1}$ of a substance when it absorbs $1 \ kJ$ of heat energy at $3 \ K$ is

The value of $\Delta S$ for freezing of $10 \ g$ of $H_2O_{(l)}$ (enthalpy of fusion is $80 \ cal/g$) at $0 \ ^\circ C$ and $1 \ atm$ pressure is.......$J/K$

Calculate the sign of $\Delta S$ for the melting of ice at $275 \ K$.

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

For a reversible adiabatic expansion of an ideal gas,which of the following is equal to zero?

For the reaction $MgCO_3(s) \rightarrow MgO(s) + CO_2(g)$,the value of $\Delta S$ is: