mr=117g + 500g = 617gd=0,2g/cm3v=m/dv=617/0,2v = 3085cm3=3,085dm3M NaCl=58,5g/molm=117gn=m/Mn=117/58,5n=2moleCm=n/vCm=2/3,085Cm=0,65mol/dm3
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mr=117g + 500g = 617g
d=0,2g/cm3
v=m/d
v=617/0,2
v = 3085cm3=3,085dm3
M NaCl=58,5g/mol
m=117g
n=m/M
n=117/58,5
n=2mole
Cm=n/v
Cm=2/3,085
Cm=0,65mol/dm3