You Have Three Ammonium Sulfate Solutions on a Lab Table

question 70

Multiple Choice

You have three ammonium sulfate solutions on a lab table in front of you. All of the solutions came from a 500.0-mL volumetric flask containing 3.00 M ammonium sulfate. Solution 1 contains 127.2 mL of the 3.00 M solution.
Solution 2 contains 68.7 mL of the 3.00 M solution.
Solution 3 contains 32.4 mL of the 3.00 M solution.
How many moles of ions does Solution 2 contain?

• A) 0.206 mol
• B) 1.44 mol
• C) 0.618 mol
• D) 0.412 mol
• E) 0.309 mol

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