October 8, 2015

Homework Help: chemistry

Posted by alex on Wednesday, May 12, 2010 at 12:16pm.

what is the ratio of water drops to EDTA if 2 drops of EDTA was needed to change the color of 20 drops of water with unknown hardness?

a. 10
b. 5
c. 0.1
d. 1.0

please explain..

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