Dry Soil (500 mg) is mixed with 40 mL of a solution containing 25 mmol/L PbSO4 at pH 4. After equilibrium for 24 h, a supernatant solution is collected and found to contain 17.3 mmol/L Pb2+ and 24.9 mmol/L SO4-. Calculate qP and qSO4for the soil in mmol/kg