obliczyć stężenie molowe roztworu powstałego po rozcieńczeniu 300g 20% roztworu NaCl do objętości 1 dm3
mr=300g
Cp=20%
ms=Cp*mr/100%
ms=20*300/100
ms=60g
M NaCl=58,5g/mol
m=60g
nm/M
n=60/58,5
n = 1,02mola
n=1,02mola
v=2dm3
Cm=n/v
Cm=1,02/1
Cm=1,02mol/dm3
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mr=300g
Cp=20%
ms=Cp*mr/100%
ms=20*300/100
ms=60g
M NaCl=58,5g/mol
m=60g
nm/M
n=60/58,5
n = 1,02mola
n=1,02mola
v=2dm3
Cm=n/v
Cm=1,02/1
Cm=1,02mol/dm3