A drinking water plant adds 500 grams of fluoride to a water tank containing 500,000 liters of drinking water. what is the concentration of fluoride in the water in parts-per-million (ppm) ?

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Chemistry

Andres Flores

2 August, 12:48

A drinking water plant adds 500 grams of fluoride to a water tank containing 500,000 liters of drinking water. what is the concentration of fluoride in the water in parts-per-million (ppm) ?

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Ernesto Liu · Answer 1

Answer is: concentration of fluoride in the water in parts-per-million is 1 ppm.

Parts-per-million (10⁻⁶) is present at one-millionth of a gram per gram of sample solution, f or example mg/kg.

m (fluoride) = 500 g · 1000 mg/g = 500000 mg.

m (water) = d (water) · V (water).

m (water) = 1 kg/L · 500000 L.

m (water) = 500000 kg.

arts-per-million = 500000 mg : 500000 kg = 1 mg/kg = 1 ppm.