# Chemistry (entropy)

posted by
**help please**
.

Calculate the Ksp of CaF2 (2 is subscript).

The problem wants it calculated with all or one of the following:

G = -1162 kJ/mol

H = -1215 kJ/mol

S = 68.87 J/mol*k

The answer is 1.55*10^(-10). How do I do this?