What will be the mass fraction of salt in the solution if 7 g of salt are dissolved in 63 g of water?

The mass of the salt will be the mass of the solute of the given solution.
The mass of the solution will be the sum of the mass of water and the mass of salt dissolved in it: 7 + 63 = 70g.
The mass fraction of a substance is found by dividing the mass of the solute by the mass of the solution and multiplying by one hundred percent: 7/70 * 100 = 10% – the answer.



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