The molar constant$-$pressure heat capacity of a certain solid at $4\mathrm{.}2K$ is $0\mathrm{.}43J{K}^{-1}mo{l}^{-1}.$ What is its molar entropy at that temperature?

How much energy is available for sustaining muscular and nervous activity from the combustion of $1\mathrm{.}00$mol of glucose molecules under standard conditions at $37C($blood temperature$)?$ The standard entropy of reaction is $+259\mathrm{.}1\frac{J}{K}$mol and the standard reaction enthalpy is $-2808k\frac{J}{m}ol.$