m=750gd=1,05g/cm3v=m/dv=750/1,05v = 714,3cm3Z def. stęż. molowego0,5mola soli ------ 1000cm3 roztworuxmoli soli --------- 714,3cm3 roztworux = 0,357molan=0,357M=53,5mol/dm3m=n*Mm=0,357*53,5m = 19,1g soli
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m=750g
d=1,05g/cm3
v=m/d
v=750/1,05
v = 714,3cm3
Z def. stęż. molowego
0,5mola soli ------ 1000cm3 roztworu
xmoli soli --------- 714,3cm3 roztworu
x = 0,357mola
n=0,357
M=53,5mol/dm3
m=n*M
m=0,357*53,5
m = 19,1g soli