Question $1(20$ pts$).$ Solve the following problems about the determination of the vapor pressures of chemicals:

a$)$ Estimate the vapor pressure $(mmHg)$ of a chemical at $313K$ by using the following experimental data $($Use Antoine equation$).$b$)$ The vapor pressures of the solid and liquid form of a chemical at its triple point are expressed by the following relationships ln p$^(**)=15\mathrm{.}16-3063//$T and ln p$^(**)=18\mathrm{.}70-3754//$ T$,$ respectively. The p$**$ is in atm and T is in K$,$ in these relationships. What is the triple point temperature of this chemical?