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
What is the Answer
To find the ratio of water drops to EDTA drops, you need to divide the number of water drops by the number of EDTA drops.
In this case, you have 2 drops of EDTA that were needed to change the color of 20 drops of water. So, the ratio can be calculated as follows:
Ratio = Number of Water drops / Number of EDTA drops
Ratio = 20 drops / 2 drops
Simplifying the ratio, we get:
Ratio = 10
Therefore, the ratio of water drops to EDTA drops is 10.
The correct answer is (a) 10.