meq/L and softening

The composition of a water sample taken from the inflow of a water treatment plant is given in the table below.

1. Convert concentrations to meq/L and verify that the total charge of the water sample is neutral. You will need to use the table of equivalent weights provided.
2. Show that the water sample is electrically neutral.
3. Create a stacked bar graph with two bars, one for the anions and one for the cations. Stack the concentration in meq/L in order of decreasing concentration. Use this bar graph to Identify the species that form in the water sample and their respective concentrations.

Compound	Concentration (mg/L)
Calcium, Ca+2	35.8
Magnesium, Mg+2	9.9
Sodium, Na+	4.6
Potassium, K+	3.9
Bicarbonate, HCO3-	131
Sulfate, SO4-2	26.4
Chloride, Cl-	7.1