Ne is the symbol representing an atom in the ground state with the most stable valence electron configuration
It's hydrogen peroxide plus carbon plus hi Hydrogen plus oxygen plus carbon hydroxide iron
The relation between vapour pressure , enthalpy of vapourisation and temperature is

ln (88/ 39) = DeltaH / 8.314 (1 / 318 - 1 / 298)
0.814 = DeltaH / 8.314 (2.11 X 10^-4 )
DeltaH = -32.07 kJ
B but im not sure if im 100% correcr