What mass of water. It is necessary to dissolve 15 g of sugar to prepare a solution with a mass fraction of sugar 10%

Find the mass of the corresponding sugar solution:

mr.-ra (sugar) = m (sugar) * 100 / w (sugar) = 15 * 100/10 = 150 (g).

Let’s find the mass of water needed to prepare such a solution:

m (H2O) = mr.-ra (sugar) – m (sugar) = 150 – 15 = 135 (g).

Thus, to prepare a 10% sugar solution, 15 g of sugar must be dissolved in 135 g of water.

Answer: 135 g.