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26 May, 19:15

How many milliliters of water must be added 100.0ml of 4.50MHBr to make a solution that is 0.250MHCl

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  1. 26 May, 19:33
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    The answer to your question is 1.8 liters (maybe we have to consider that there are 100 ml of the original solution so the volume of water will be 1.7 l)

    Explanation:

    Data

    Volume 1 = 100 ml

    Concentration 1 = 4.5 M

    Concentration 2 = 0.25 M

    Volume 2 = ?

    Process

    1. - Calculate the number of moles in solution 1

    Molarity = moles/volume

    -Solve for moles

    moles = Molarity x volume

    -Substitution

    moles = 4.5 x 0.1

    -result

    moles = 0.45

    2. - Calculate Volume 2

    Volume = moles/concentration

    -Substitution

    Volume = 0.45 / 0.25

    -Result

    Volume = 1.8 l

    3. - Conclusion

    There must be added 1.8 l of water to the 4.5 solution
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