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8 October, 09:34

What is the number of moles of solute in 250mL of a 0.4M solution?

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  1. 8 October, 11:10
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    There are 0.1 moles of solute in 250 mL of 0.4 M solution.

    Explanation:

    First, recognize that the molar concentration tells you how many moles of the solute are present in one liter of solution. In a 0.4 M solution, there are 0.4 moles of solute in every liter of solution. You can determine the number of moles of solute in 250 mL of the solution using dimensional analysis.

    250mL⋅

    1L/1000mL⋅

    0.4mol1L

    Units of liters and milliliters cancel, leaving you with a final answer in units of moles, at 0.1 mol.
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