I need help with my chemistry questions

Question

Given ∆H° = -19.4 kJ/mol and ∆S° = +92.3 J/mol･K, determine ∆G° for the phase change CO₂(g) → CO₂(aq) at 25 °C.

Answer 1

∆Gº = ∆Hº - T∆Sº

∆Hº = -19.4 kJ/mol

∆Sº = 92.3 J/mol = 0.0923 kJ/mol (note to change units to be consistent with units of ∆Gº)

T = 25ºC + 273 = 298K

Solving for ∆Gº ...

∆Gº = -19.4 + (298)(0.0923)

∆Gº = 8.10 kJ/mol