A substance b has a normal boiling point of 893degc and its

Question

A substance, B, has a normal boiling point of +89.3^°C, and its enthalpy of vaporization of 260 J g^-1.  How much energy is required to change 150 grams of B from a liquid at 89.3^°C to a gas at 89.3^°C? 

a.  5.15 x 10² joules

 b.  3.90 x 10⁴ joules

c.  4.37 x 10⁵ joules

d.  1.08 x 10⁵ joules

e.  1.55 x 10⁵ joules