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%

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%

1 Answer

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 …

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