(1). Units and stoichiometry (a). [1 point] If a solution contains 32.8ppt(gkg1)NaCl, calculate the concentration of Na+and Cl1 ions in mmolL1 (assume solution density =1.026gmL1 ). (b). [1 point] If 0.4 mole of CaCl2 is dissolved in 20L of water, calculate the resulting total solution concentrations Ca2+ and Cl1 in molkg1 (ignore ion pairing, and assume solution density =1gmL1 )