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V2 M2 + V1 M1 = V3 M3
150 . 0,2 + 100 . 0,3 = 250 M3
15 + 30 = 250M3
M3 = 45/250 = 0,18 M
V₂ = 100 ml M₂ = 0,3 M
kemudian untuk V₃ itu adalah V₁ + V₂ = 150 + 100 = 250 ml
ditanya : M₃ = ....?
jawab :
V₁ . M₁ + V₂ . M₂ = V₃ . M₃
150 . 0,2 + 100 . 0,3 = 250 . M₃
30 + 30 = 250M₃
60 = 250M₃
M₃ = 60 / 250 = 0,24 M