Question

(i) 10 gm of sugar is dissolved in 1 kg of water. Calculate the mass % of solution.
(ii) Define mass percent.

Answer 1

Answer:

(ii)

Mass percent is the mass of the element or solute divided by the mass of the compound or solute.

Answer 2

Mass percent

Explanation:

(i) Given: 10 gm of sugar is dissolved in 1 kg of water.

mass of solute (sugar) = 10 gm

mass of solvent (water) = 1 kg = 1000 gm

mass of solution (sugar solution) = 1000 + 10 = 1010 gm

Mass percentage of the solution = mass of solute / mass of solution * 100

= 10 / 1000 * 100

= 1

Concentration of the sugar solution is 1%.

(ii) Mass percent of a substance within a mixture is the ratio of the mass of that substance to the total mass of the mixture. Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture.