What is the mass of 0.5 mol of Na₂CO₃? (molar mass 106 g/mol)
Answer and explanation
Correct answer: D. 53 g
- Step 1: Mass = moles × molar mass. Step 2. 0.5 × 106 = 53 g. Answer: 53 g. Why not the others: 212 g is what you get if you divide the molar mass by the moles. 106.5 g is what you get if you add the numbers. 5.3 g is what you get if you misplace the decimal point.
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