Question

write a note on percent by mass

Answer 1

Mass percentage is one way of representing the concentration of an element in a compound or a component in a mixture. Mass percentage is calculated as the mass of a component divided by the total mass of the mixture, multiplied by 100%.


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

The result is multiplied by 100 to give a percent.

The formula for the amount of an element in a compound is:

mass percent = (mass of element in 1 mole of compound / mass of 1 mole of compound) x 100

The formula for a solution is:

mass percent = (grams of solute / grams of solute plus solvent) x 100

or

mass percent = (grams of solute / grams of solution) x 100

The final answer is given as %.