The laboratory assistant prepared two solutions of sodium carbonate of different concentrations.
If mix 100 g of the first solution and 150 g of the second solution (mixture 1), then the effect of excess of sulfuric acid on the resulting mixture will lead to the release of 5.82 L of gas.
If mix 150 g of the first solution and 100 g of the second solution (mixture 2), in a reaction with excess sulfuric acid will release 4.70 L of gas.
What is the mass fraction of sodium carbonate in mixtures 1 and 2?