What is the grams per liter in a 3.45 M NaCl solution? (MW ≈ 58 g/mol)

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Multiple Choice

What is the grams per liter in a 3.45 M NaCl solution? (MW ≈ 58 g/mol)

Explanation:
Grams per liter comes from multiplying the molarity by the molar mass. For NaCl, with a molar mass of about 58 g per mole, a 3.45 M solution has 3.45 moles of NaCl per liter. Multiply: 3.45 × 58 ≈ 200 g per liter. So the concentration is about 200 g/L. Using a more exact molar mass (58.44 g/mol) would give roughly 202 g/L, but with the given approximate value, 200 g/L is the appropriate result. The other numbers would imply much lower molarities and don’t match a 3.45 M solution.

Grams per liter comes from multiplying the molarity by the molar mass. For NaCl, with a molar mass of about 58 g per mole, a 3.45 M solution has 3.45 moles of NaCl per liter. Multiply: 3.45 × 58 ≈ 200 g per liter. So the concentration is about 200 g/L. Using a more exact molar mass (58.44 g/mol) would give roughly 202 g/L, but with the given approximate value, 200 g/L is the appropriate result. The other numbers would imply much lower molarities and don’t match a 3.45 M solution.

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