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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Biology
3 months
2022-02-12T15:42:55+00:00
2022-02-12T15:42:55+00:00 1 Answer
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Answers ( )
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%