Calculate the mass of potassium sulfate and water that you need to take to prepare 60 g of the Solution by mass fraction of the dissolved substance 15%.
Determine the mass of potassium sulfate in solution based on the formula for the percentage concentration:
W (in-va) = m (in-va) / m (solution) • 100%.
The mass of salt will be equal to:
m (K2SO4) = W (K2SO4) • m (solution) / 100% = 15 • 60/100 = 9 g.
The mass of water required to prepare the solution:
m (H2O) = m (solution) – m (salts) = 60 – 9 = 51 g.
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