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Partes por Millón (ppm) = masa soluto × 10⁶ ⇒ mg soluto masa solucion Litros solucion
ppm = 3,5 ion F⁻
0,825 L
ppm = 4,24
conversion
825 ml sol × 1 L sol ⇒ 0,825 L
1000 ml sol