Jessie is working with a 100% stock concentration of Clorox. She decides to add 150 µL of bacteria to a tube containing 2 mL of nutrient bro

Question

Jessie is working with a 100% stock concentration of Clorox. She decides to add 150 µL of bacteria to a tube containing 2 mL of nutrient broth and then adds 200µL of the Clorox stock to the tube as well. What is the unknown concentration of the tube?

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Melanie 3 months 2022-02-12T15:42:55+00:00 1 Answer 0 views 0

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    2022-02-12T15:44:14+00:00

    Answer:

    8.51%

    Explanation:

    C1V1 = C2V2

    Here,

    C1 = Starting concentration = 100%

    V1 = Starting volume = 200μL

    C2 = Final concentration = to find out

    V2 = Final volume = 2000 + 150 + 200 = 2350μL

    100 * 200 = C2 * 2350

    C2 = 100 * 200 / 2350

    = 20000 / 2350

    = 8.51%

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