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You perform a serial dilution starting with a culture containing2,500,000 organisms/ml.

First dilution - pipette 1 ml of culture into 4 ml of water
Second dilution - pipette 1 ml of first dilution into another 99 mlof water
Third dilution - pipette 1 ml of the second dilution into 9 ml ofwater.

What is the total dilution at each step?
What is the number of organisms/ml at each step?

Please Help
Thank You In Advance

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Hubert Koch
Hubert KochLv2
28 Sep 2019

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