35. Solving a chemistry problem

53. A weighing of 1.1000 g of crystalline soda is dissolved in a 250 ml volumetric flask. For titration of 25.00 ml of this solution, 20.10 ml of a hydrochloric acid solution with a sodium carbonate titer of 0.00530 g/ml was used. Calculate the mass fraction of sodium carbonate in the sample.