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jumlah partikel = mol x L = 0,2 x 6,02 x 10²³ = 1,204 x 10²³
b.) Mr CaCO₃ = 1.40 + 1.12 + 3.16 = 100
massa = mol x Mr = 0,25 x 100 = 25 gr
=11,2/56
=0,2mol
b) m=n*mr
=0,25*(1*40+1*12+3*16)
=0,25*100
=25 gr