What is the mass of 1.5 mol of MgCl₂? (molar mass 95 g/mol)
Answer and explanation
Correct answer: A. 142.5 g
- Step 1: Mass = moles × molar mass. Step 2. 1.5 × 95 = 142.5 g. Answer: 142.5 g. Why not the others: 63.333 g is what you get if you divide the molar mass by the moles. 96.5 g is what you get if you add the numbers. 14.25 g is what you get if you misplace the decimal point.
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