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Chemie

Určete hmotnost hydroxidu sodného obsaženého ve 400 cm3 roztoku NaOH o koncentraci c = 0,25 mol × dm-3 (Ar(Na) = 23,0):

Určete hmotnost hydroxidu sodného obsaženého ve 400 cm³ roztoku NaOH o koncentraci c = 0,25 mol × dm^-3 (Ar(Na) = 23,0):