v=1dm3
Cm=0,2mol/dm3
n=Cm*v
n=0,2*1
n=0,2mola HCl
1mol HCl ---- 36,5g
0,2mola HCl ----- xg
x = 7,3g HCl
m=7,3g
Cp=37%
mr=ms*100%/Cp
mr=7,3*100/37
mr=19,73g roztworu
m=19,73g
d=1,19
v=m/d
v=19,73/1,19
v = 16,58cm3
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v=1dm3
Cm=0,2mol/dm3
n=Cm*v
n=0,2*1
n=0,2mola HCl
1mol HCl ---- 36,5g
0,2mola HCl ----- xg
x = 7,3g HCl
m=7,3g
Cp=37%
mr=ms*100%/Cp
mr=7,3*100/37
mr=19,73g roztworu
m=19,73g
d=1,19
v=m/d
v=19,73/1,19
v = 16,58cm3