What is the concentration (M) of a NaCl solution prepared by dissolving 9.3 g of NaCl in sufficient water to give 350 mL of solution? A) 27 B) 2.7 × 10^-² C) 18 D) 0.16 E) 0.45

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Quizplus · Accepted Answer

The molar mass of NaCl is approximately 58.44 g/mol. The number of moles of NaCl is 9.3 g / 58.44 g/mol = 0.159 moles. The concentration is moles/volume (L), so 0.159 moles / 0.350 L = 0.454 M, which rounds to 0.45 M.

What Is the Concentration (M) of a NaCl Solution Prepared