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2 December, 18:54

if you take 2.0mL of a 7.0 ppm NaOH solution and dilute it to 250.0mL, calculate the final concentration in ppm.

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  1. 2 December, 19:05
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    C₂ = 0.056 ppm

    Explanation:

    Given dа ta:

    Initial volume = 2.0 mL

    Initial concentration = 7.0 ppm

    Final volume = 250.0 mL

    Final concentration = ?

    Solution:

    Formula:

    C₁V₁ = C₂V₂

    C₁ = Initial concentration

    V₁ = Initial volume

    C₂ = Final concentration

    V₂ = Final volume

    Now we will put the values in formula.

    C₁V₁ = C₂V₂

    7.0 ppm * 2.0 mL = C₂ * 250.0 mL

    C₂ = 14.0 ppm. mL / 250.0 mL

    C₂ = 0.056 ppm
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