Question

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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

Here 5% NaOH means the solution contain 5 parts of NaOH in a total 100 parts of the solution i.e., solute - 5 parts , solvent - 95 parts

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