The Enthalpy of Vaporization of Ammonia Is 23 $\Delta$ S_surr When 1

The enthalpy of vaporization of ammonia is 23.35 kJ/mol at its boiling point (-33.4°C) .Calculate the value of $\Delta$ S_surr when 1.00 mole of ammonia is vaporized at -33.4°C and 1.00 atm.

A) 0
B) -6.99 $\times$ 10² J/K mol
C) 9.74 $\times$ 10¹ J/K mol
D) -9.74 $\times$ 10¹ J/K mol
E) 6.99 $\times$ 10² J/K mol