A 45.50 mL aliquot from a 0.460 L solution that contains 0.410 g of MnSO 4 ( MW = 151.00 g/mol) required 35.7 mL of an EDTA solution to reach the end point in a titration. What mass, in milligrams, of CaCO 3 ( MW = 100.09 g/mol) will react with 1.59 mL of the EDTA solution?