What is the mass of 2 mol of SO₂? (molar mass 64 g/mol)
Answer and explanation
Correct answer: B. 128 g
- Step 1: Mass = moles × molar mass. Step 2. 2 × 64 = 128 g. Answer: 128 g. Why not the others: 32 g is what you get if you divide the molar mass by the moles. 66 g is what you get if you add the numbers. 12.8 g is what you get if you misplace the decimal point.
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