1 mol MgCl2 --- 95g
X --- 19g
X=0,2 mola
Cm=n/V
Cm=0,2/0,5dm3
Cm=0,4 mol/dm3
Cm=?
n= m/M
m = 19.
M = 24 + 2*35,5 = 95
n= 19/95 = 0,2
V = 500cm3 = 0,5dm3
Cm = 0,2/0,5 = 0,4mol/dm3
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1 mol MgCl2 --- 95g
X --- 19g
X=0,2 mola
Cm=n/V
Cm=0,2/0,5dm3
Cm=0,4 mol/dm3
Cm=?
Cm=n/V
n= m/M
m = 19.
M = 24 + 2*35,5 = 95
n= 19/95 = 0,2
V = 500cm3 = 0,5dm3
Cm = 0,2/0,5 = 0,4mol/dm3