Cp=ms/mr*100%
0,02=ms/250g
ms=5g soli
250-5=245g wody
Cp = 2%
mr = 250g
mw =?
Cp =ms *100%/mr I*mr
ms *100% = Cp *mr I:100%
ms = mr * Cp/100%
ms = 250g * 2%/100%
ms = 5g, (masa substancji - masa soli)
========
mw = mr - ms
mw = 250g -5g
mw = 245g, (masa wody)
==========
Odp.Potrzeba 5g soli i 245g wody.
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Cp=ms/mr*100%
0,02=ms/250g
ms=5g soli
250-5=245g wody
Cp = 2%
mr = 250g
mw =?
Cp =ms *100%/mr I*mr
ms *100% = Cp *mr I:100%
ms = mr * Cp/100%
ms = 250g * 2%/100%
ms = 5g, (masa substancji - masa soli)
========
mw = mr - ms
mw = 250g -5g
mw = 245g, (masa wody)
==========
Odp.Potrzeba 5g soli i 245g wody.