Find the mass of water and salt required to prepare 250g of a 20% solution.

Mass of water and salt required
to prepare 250 g of a 20% solution:
m (salt) = 250g × 0.2 = 50g
m (H2O) = 250- 50 = 200g



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.