of a solution is diluted to . What is the new molarity (in M)?

Answer and explanation

Correct answer: A. 1

  1. Step 1: For a solution dilution, the total amount of solute remains constant: , where is molarity and is volume.
  2. Step 2: Solve for the final molar concentration: .
  3. Step 3: Substitute the given values , , and : .
Answer
1.
Why not the others: 100 multiplies volume and molarity without dilution scaling; 5 assumes a twofold dilution factor; 10 assumes no dilution occurred.

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