540 g of glucose (molar mass 180 g/mol) are dissolved in water to make 4 L of solution. What is the molarity?
Answer and explanation
Correct answer: C. 0.75 M
- Step 1: Moles of solute: 540 / 180 = 3 mol.
- Step 2: Molarity = moles / liters = 3 / 4 = 0.75 M.
Answer
0.75 M.
Why not the others: Molarity is moles per liter; the other values multiply, add, or use grams instead of moles.
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