tolong jawab nomor satu yang benar ya.........

a.ksp=4s^3
6x10^-12= 4s^3
s= 1,144
b. Mg(OH)2 = Mg2+ + 2OH-
S. S. 2S
MgCl2. = Mg2+ + 2Cl-
0,01. 0,01. 0,02
kspMg(OH)2= 0,01x[OH2]^2
6x10^-12 = 0,01 x 4s^2
s^-2= 10^-10/ 4
s= 2,5x10^-6
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