Question

A solution is prepared by dissolving urea in 500 g of water . Mass/mass percentage of the solvent is 99.01 percent . Mass of solute is :

Answer 1

Answer:

5 g

Explanation:

mass of solvent = 500 g

mass/mass percentage of the solvent = 99.01

mass/mass percentage of solvent = (mass of solvent /mass of solution) × 100

mass of solution = (500 × 99.01) ÷ 100 = 505 g

mass of solution = mass of solvent + solute

∴ mass of solute = mass of solution - mass of solvent =505 - 500 =5g

∴ Mass of solute is 5g