Given the Data Below,determine the Molar Enthalpy of Vaporization of Liquid

Multiple Choice

Given the data below,determine the molar enthalpy of vaporization of liquid Rb.
Rb,P₁ = 1.00 mmHg,t₁ = 297 °C,P₂ = 400 mmHg,t₂ = 620 °C

A) 5.49 kJ/mol
B) 28.4 kJ/mol
C) 78.5 kJ/mol
D) 12.8 kJ/mol
E) 4.62 kJ/mol