Calculate the molarity of a solution prepared by dissolving 0.750 moles of solute in 1.20 liters of solution.

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Multiple Choice

Calculate the molarity of a solution prepared by dissolving 0.750 moles of solute in 1.20 liters of solution.

Explanation:
Molarity is the amount of solute per liter of solution. So you divide the moles of solute by the volume of solution in liters: 0.750 mol ÷ 1.20 L = 0.625 mol/L. Since both numbers have three significant figures, the result is 0.625 M. This also illustrates how increasing the volume lowers the concentration for the same amount of solute. If the final volume were different, the numerical value would change accordingly (for example, a larger volume would give a smaller molarity).

Molarity is the amount of solute per liter of solution. So you divide the moles of solute by the volume of solution in liters: 0.750 mol ÷ 1.20 L = 0.625 mol/L. Since both numbers have three significant figures, the result is 0.625 M. This also illustrates how increasing the volume lowers the concentration for the same amount of solute. If the final volume were different, the numerical value would change accordingly (for example, a larger volume would give a smaller molarity).

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