Problem 1: Water is to be softened by excess-lime treatment. The water chemistry is below: (a) Calculate the hardness for the water as CaCO3. Is this excessively hard water? (b) Sketch a med/L bar graph. Is there a cation or anion that is likely missing from the? Explain your answer (c) Calculate the amount of softening chemicals required (d) Draw a meg/L bar graph for the softened water after recarbonation, assuming that 80% of the alkalinity is in the bicarbonate form. Would the water be excessively hard after the proposed softening? Explain