1. What is the mass of the solute contained in 21G. solution with a mass fraction of 0.9%
2. How much water should be added to 24 g of salt to get a solution with ω=23 %?
3. What mass of salt should be added to 85 ml of water to get a solution with ω = 17 %
4. Mixed 1.2 g of salt and 2.4 ml of water. What is the mass fraction of salt in the resulting solution?
5. To 36G of 19% salt solution, 21 ml of water was added. Determine the mass fraction of salt.
6. To 85g of a 13% strength solution of sugar added 14g of sugar. What is the percentage of sugar in the newly obtained solution?
7. How many milliliters of water should be added to 54 g of 18% salt solution to get a 5% solution?