Tentukan molaritas larutan jika massa CO(NH2)2 20 gram dan massa pelarut 200 gram! (Ar

Jawaban:

Mr CO(NH2)2 = 60

M = n / V => V = 200 gram = 200 ml = 0.2 L

= massa / Mr

= 20 / 60

= 0,33 mol

M = 0,33 / 0,2

= 1.65 M

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