20088192 20088192

28-09-2021
Biology

contestada

Question 7
1 pts
If you added 0.9 ml: of an unknown substance and created a dilution of 4% in
a 5 mL tube, what is the original concentration of the substance?
A. 22.2%
B. 12.6 %
C. 100%
D. 1%

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marinahafiz marinahafiz

28-09-2021

Try letter A that should be correct

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