In microbiology, dilutions are critical for getting a countable number of microbes to grow on a petri dish. If you suspect your culture of bacteria has 50 x 106 cells per mL, what would you want the final dilution to be in order to end up with 50 colonies of bacteria on a petri dish? Express your answer as an exponent rounded to two decimal places. Eg. 10.01e-3, not 0.00101. Treat colonies of bacteria (cells / mL) the way you would treat concentration (Moles / L) The formula M1V1 = M2V2 can still be used. The final concentration is the number of colonies on the petri dish. Solve for V2.

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter1: Basic Concepts Of Chemistry
Section: Chapter Questions
Problem 35RGQ: Molecular distances are usually given in nanometers (1 nm = 1 109 m) or in picometers (1 pm = 1 ...
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In microbiology, dilutions are critical for getting a countable number of microbes to grow on a petri dish.
If you suspect your culture of bacteria has 50 x 106 cells per mL, what would you want the final dilution to be in order
to end up with 50 colonies of bacteria on a petri dish?
Express your answer as an exponent rounded to two decimal places. Eg. 10.01e-3, not 0.00101.
Treat colonies of bacteria (cells / mL) the way you would treat concentration (Moles / L)
The formula M1V1 = M2V2 can still be used. The final concentration is the number of colonies on the petri dish. Solve
for V2.
Transcribed Image Text:In microbiology, dilutions are critical for getting a countable number of microbes to grow on a petri dish. If you suspect your culture of bacteria has 50 x 106 cells per mL, what would you want the final dilution to be in order to end up with 50 colonies of bacteria on a petri dish? Express your answer as an exponent rounded to two decimal places. Eg. 10.01e-3, not 0.00101. Treat colonies of bacteria (cells / mL) the way you would treat concentration (Moles / L) The formula M1V1 = M2V2 can still be used. The final concentration is the number of colonies on the petri dish. Solve for V2.
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