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Calcule el peso de cromato sodico, Na2CrO4, necesario para preparar 200g de una disolución al 20% de Na2CrO4

Sagot :

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Answer:

40g de cromato sódico serán necesarios

Explanation:

Una solución 20% de Na2CrO4 contiene 20g de Na2CrO4 por cada 100g de solución (Esto es, soluto + solvente). Para preparar 200g de la disolución en mención serán necesarios:

200g solucion * (20g Na2CrO4 / 100g Solución) =

40g de cromato sódico serán necesarios

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