Took salt 25 g was dissolved in 300 g of water. Find the mass fraction of salt.

1) The mass of the salt will be the mass of the solute. Because it was the salt that was dissolved in water.
2) The mass of the entire solution will be the sum of the mass of salt and the mass of water: 25 + 300 = 325g.
3) The mass fraction of salt is found by dividing the mass of the solute by the mass of the solution and multiplying by one hundred percent: 25/325 * 100 = 7.7% – the answer.



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