a) draw the phase diagram of X according to the following information

the equations that give the change of vapor pressure around the triple point according to the temperature of the X gas that accumulates above the liquid and solid X

-for liquid X ; lnP(bar) = (-3015 / T (K) ) + 12.9

-for solid X ; lnP(bar) = (-3795 / T (K) ) + 15.9

b) calculate the temperature and pressure values at the triple point

c) explain which phase is X at 1 atm and 310 K, explain the reason

d) calculate molar enthalpy of fusion of X (assume enthalpy is independent of temperature)