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= 4 / 40 = 0,1
M = n/v
= 0,1 / 01 = 1 M
V = 100 mL = 0,1 L
Mr = 40
M = ...........?
Penyelesaian :
* Mencari mol
mol = massa/Mr
mol = 4/40
mol = 0,1 mol
* Mencari konsentrasi
M = mol/Volume
M = 0,1/0,1
M = 1 Molar
Jadi, konsentrasi larutan adalah 1 M