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..
Let's see. Bob Pursley did one early this AM that was 3 drops to 20 drops, so 3:20 (6.7) was the answer. Wouldn't this be done the same way?
so would the answer be a. 10??
That looks right to me.
H2O/EDTA = 20/3 = 6.7
H2O/EDTA = 20/2 = 10
To find the ratio of water drops to EDTA drops, we need to divide the number of water drops by the number of EDTA drops.
According to the question, 2 drops of EDTA were needed to change the color of 20 drops of water.
So, the ratio would be calculated as follows:
Ratio = Number of Water Drops / Number of EDTA Drops
Ratio = 20 drops / 2 drops
Ratio = 10
Therefore, the ratio of water drops to EDTA drops is 10.
In other words, for every 1 drop of EDTA, you will need 10 drops of water.
The correct answer is (a) 10.