Q = mc(TBP - Ti) + mΔHFus
You need to look up c (J/g°C), T, boiling point temperature for Benzene, ΔH (J/g)
You must pay attention to units C can be in J/mole K and ΔH can be in kJ/mole. Everything has to cancel and mesh to yield Q in Joules. (Instead of m, you can use n, moles, using the molar mass of benzene to convert the grams.