To prepare titrations solutions, she dissolved 3.00 g of sodium thiosulfate pentahydrate in 100.0 mL of distilled water. 25.0 mL of the sodium thiosulfate solution was transferred into a 250.0 mL volumetric flask and was made up to the mark with distilled water to make solution A.
calculate the concentration of Sodium Thiosulfate in this case?