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mol L(OH)2 = 0,05 x 0,1 liter
mol L(OH)2 = 5x10⁻³ mol
Mr L(OH)2 = massa L(OH)2 / mol
Mr L(OH)2 = 0,37 gr / 5x10⁻³ mol
Mr L(OH)2 = 74
Mr L(OH)2 = 74
Mr L(OH)2 = Ar L + 2 . Ar O + 2 . Ar H
74 = Ar L + 2 . 16 + 2 . 1
74 = Ar L + 32 + 2
74 = Ar L + 34
Ar L = 40