20 mins left1!!1! The solubility of Lead Chromate (PbCrO4) gr / ltr is 4.5 x 10 ^ -5. Calculate the solubility product (Ksp) of this compound.

PbCr04 (s) ⇋ Pb^ +2 (ac) + CrO4 ^ 2- (ac)

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid