the mass of 3 PB tablets was measured to be 3.1398 g. The tablets were crushed, and 2.9551 g of the powder was transferred to a beaker and reacted with HCl. After filtration, the filtrate was transferred to a 50-mL volumetric flask and diluted with water. 10.00 mL of this stock solution was combined with 0.2 M Na3PO4. The resulting precipitate weighed 0.2798 g after drying. The mass of BSS per tablet is