The ionic compound, Ca(OH)₂, will fully dissolve in water. If 13.01 g is dissolved in water to give a final volume of 536.0 mL, then find the following ion concentrations. 
a) [Ca²⁺] = 0.0243 M, [OH⁻] = 0.0486 M 
b) [Ca²⁺] = 0.0486 M, [OH⁻] = 0.0243 M 
c) [Ca²⁺] = 0.0243 M, [OH⁻] = 0.0243 M 
d) [Ca²⁺] = 0.0486 M, [OH⁻] = 0.0486 M