For the treatment of scabs, a 60% solution of thiosulfate acid is used. Make the necessary calculations and write down

For the treatment of scabs, a 60% solution of thiosulfate acid is used. Make the necessary calculations and write down the sequence of actions for preparing 3 kg of such a solution.

Thiosulfate acid – H2SO3S;
W = mv-va / mr-ra, W = 60% or 0.6, mr-ra = 3 kg.
Find the mass of the acid: mv-va = 0.6 * 3 = 1.8 kg.
Find the mass of water: m (H2O) = mr-ra – mv-va = 3 kg – 1.8 = 2.2 kg (2.2 liters)