To a solution of an acid weighing 200 g with a mass fraction of 15% was added 300 g of water?
| December 2, 2020 | education
To a solution of an acid weighing 200 g with a mass fraction of 15% was added 300 g of water? What is the mass fraction of acid in the new solution?
1) 200 * 0.15 = 30 grams – m acid;
2) 200 + 300 = 500 grams – m of a new solution;
3) 30 * 100/500 = 6% – mass fraction of acid in the new solution;
Answer: the mass fraction of acid in the new solution became 6%
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