Solving a chemistry problem

6. There are experimental data on the coefficients of surface tension of the liquid σ0 and σT, at various temperatures T0 = 298 K and T1, as well as the critical temperature Tcrit. Calculate the temperature coefficient β and the coefficient of surface tension of the liquid σT2, at temperature T2.
Table 5
No. liquid T0, K σ0*103 N/m T1, K σT1*103 N/m T2, K Tcrit, K
6-2 benzene 298 28.18 333 23.66 308 562.7