elisabethhumbert07 elisabethhumbert07

07-11-2022
Chemistry

contestada

La spiruline est une microalgue dont le pourcentage en masse en vitamine A est de 0,212%. p Calculer la masse de spiruline à prélever pour préparer 500mL d’une solution aqueuse de concentration en masse Cm=0,320g·L–1 en vitamine A.

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