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30 October, 09:44

What volume of a 1.5 M KOH solution is needed to provide 3.0 moles of KOH?

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  1. 30 October, 10:53
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    Volume = 2.0 liter of 1.5 M solution of KOH

    Explanation:

    1) dа ta:

    a) Solution: KOH

    b) M = 1.5 M

    c) n = 3.0 mol

    d) V = ?

    2) Formula:

    Molarity is a unit of concentration, defined as number of moles of solute per liter of solution:

    M = n / V in liter

    3) Calculations:

    Solve for n: M = n / V ⇒ V = n / M

    Substitute values: V = 3.0 mol / 1.5 M = 2.0 liter

    You must use 2 significant figures in your answer: 2.0 liter.
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