In water weighing 21 g was dissolved 4 g of potassium nitrate. Determine the mass fraction (%) of the salt in the solution.
| April 10, 2021 | education
We find the mass of the resulting solution.
21 + 4 = 25.
To find the mass fraction of dissolved salt, it is necessary to find the ratio of the mass of potassium nitrate to the total mass of the solution.
4: 25 = 0.16.
We convert 0.16 to percent, for this we multiply by 100.
0.16 * 100 = 16%.
Answer: The mass fraction of potassium nitrate in the solution is 16%.
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