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Tepat bereaksi, artinya molnya sama-sama menghabiskan.mol HCl = 0.2L x 0.3M = 0.06 mol
mol L (liat koefisien reaksi).
mol L = koef L/koef HCl x mol HCl
mol L = 2/6 x 0.06 mol = 0.02 mol
Ar L = massa L/mol L = 1.12 g/0.02 mol = ...