Question

if you have 99 ml of water mixed with 1 ml of pollutant, the concentration of pollutant is: 1:100 2:10 1:1 1:1000

Explanation:

Step1: Calculate total volume

Total volume = Volume of water + Volume of pollutant = 99 ml + 1 ml = 100 ml.

Step2: Determine concentration ratio

Concentration of pollutant is volume of pollutant : total volume = 1 ml : 100 ml = 1:100.

Answer:

1:100