Dobrý večer, potrebovala by som pomôcť s takýmto príkladom, neviem ako mám postupovať pri výpočte: Koľko g 60%-ného NaOH je potrebné na prípravu 5000ml roztoku s koncentráciou látkového množstva c= 0,2 mol .dm-3?
(Mr NaOH= 40).
Vopred ďakujem za odpoveď.
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