Determina cuántos gramos de sulfato de sodio Na2 SO4 están co tenidos en 500g de disolución de esta sustancia al 1, 5% en masa.
En resumen
%m / m = masa soluto x 100 `````````````````` masa solc. Masa soluto = %m / m x m solc. ```````````````````````` 100 masa soluto = 1. 5 g / g x 500 g ```````````````````````` 100 masa soluto = 7. 5 g de Na2SO4.
%m / m = masa soluto x 100 `````````````````` masa solc.
Masa soluto = %m / m x m solc.
```````````````````````` 100
masa soluto = 1.
5 g / g x 500 g ```````````````````````` 100
masa soluto = 7.
5 g de Na2SO4.