1. Explain what solubility means and why some ionic compounds dissolve and whereas others don't.

The density would be 1.622

The correct answer is:   bri hope this answer was ! : )

Answer trigonal pyramidal;

Answer:             1.0  × 10⁻⁵ msolution:                     as we know ph is given as,                                    ph  = -log [h⁺]and,                                    [h⁺]  =  10^-ph    (1)putting value of ph in eq. 1,                                    [h⁺]  =  10⁻⁵                                    [h⁺]  =  1.0  × 10⁻⁵ m