If 130.0 mL of 3.0×10−3 M Na2SO4(aq) is saturated with CaSO4, how many grams of would be present in the solution?

If 130.0 mL of 3.0×10−3 M Na2SO4(aq) is saturated with CaSO4, how many grams of would be present in the solution? [Hint: Does the usual simplifying assumption hold?]


[![enter image description here](https://i.stack.imgur.com/oD1Ym.jpg)](https://i.stack.imgur.com/oD1Ym.jpg)


My answer is still wrong. What have I done wrong? 


