Final answer:
Cyanuric acid levels in pool water must not exceed 100 parts per million (ppm). For a 5,000 gallon pool, to reach a chlorine concentration of 3.0 ppm, one must add a total of 63.6 grams of chlorine.
Step-by-step explanation:
Cyanuric Acid Levels in Pool Water
The concentration of cyanuric acid used as a stabilizer in pool water must never exceed 100 parts per million (ppm). This safety threshold helps to ensure that the pool remains a safe and healthy environment for swimmers, preventing the buildup of harmful substances.
Chlorine Treatment for Pool Water
To achieve a chlorine concentration of 3.0 ppm in a typical 5,000 gallon pool, which contains 21,200 kg of water, you would add 3 ppm by mass. Calculating this in kilograms requires understanding that ppm is equivalent to milligrams per kilogram of solution. Therefore, you need to add 3 mg of chlorine for each kg of water, resulting in a total mass of 63.6 grams of chlorine required to achieve the desired concentration.