In 180 grams of water, 20 grams of salt was dissolved. What is the mass fraction of salt (ω) in the resulting solution?

1) The mass of the entire solution will add up from the mass of water and the mass of salt dissolved in it. The mass of the entire solution is: 180 + 20 = 200g.
2) Find the mass fraction of salt in the solution. To do this, divide the mass of salt by the mass of the entire solution and multiply by one hundred percent: 20/200 * 100 = 10%.
Answer: the mass fraction of salt in the resulting solution is ten percent.



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