How Many SO₃^2- Ions Are Contained in 99

question 81

Multiple Choice

How many SO₃^2- ions are contained in 99.6 mg of Na₂SO₃? The molar mass of Na₂SO₃ is 126.05 g/mol.

• A) 1.52 × 10²⁷ SO₃^2- ions
• B) 4.76 × 10²⁰ SO₃^2- ions
• C) 2.10 × 10²¹ SO₃^2- ions
• D) 1.05 × 10²¹ SO₃^2- ions
• E) 9.52 × 10²⁰ SO₃^2- ions

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