Question

2.5 g of sugar is dissolved in 47.5 g of water. Calculate its concentration as mass by masspercent. Hint: -Mass by mass percentage=mass of solute/mass of solution x100.

Answer 1

Explanation:

molarity (mass %) = 2.5/50 *100

= 5%

Answer 2

Molarity = mass of solute / mass of solution
Mass of solute = 2.5 g
Mass of solution = mass of solute + mass of solvent = 2.5 g + 47.5 g = 50 g

(2.5/50) x 100 = 5

Molarity of solution = 5M

Hope this helped.