In a 100.0 g sample of solution, 58.5 g NaCl is present. What is the mass percent of NaCl?

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Multiple Choice

In a 100.0 g sample of solution, 58.5 g NaCl is present. What is the mass percent of NaCl?

Explanation:
Mass percent is the fraction of the total mass that is the solute, expressed as a percentage. It’s calculated as (mass of solute) / (mass of solution) × 100%. Here the total mass of the solution is 100.0 g and the NaCl solute has a mass of 58.5 g. So the mass percent is (58.5 g ÷ 100.0 g) × 100% = 58.5%. The remaining 41.5 g is the solvent.

Mass percent is the fraction of the total mass that is the solute, expressed as a percentage. It’s calculated as (mass of solute) / (mass of solution) × 100%.

Here the total mass of the solution is 100.0 g and the NaCl solute has a mass of 58.5 g. So the mass percent is (58.5 g ÷ 100.0 g) × 100% = 58.5%. The remaining 41.5 g is the solvent.

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