Odpowiedź:
Wyjaśnienie:
Dane: Szukane:
mr=300g ms=?
Cp=25% Vw=?
d= 1g/cm³
ms = Cp*mr/100%
ms = 25%*300g/100%
ms = 75g
mw = mr - ms
mw = 300g - 75g
mw = 225g
V = m/d
Vw = 225g/1g/cm³
Vw = 225cm³
Odp. Potrzeba 75g NaNO₃ i 225cm³ wody.
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Odpowiedź:
Wyjaśnienie:
Dane: Szukane:
mr=300g ms=?
Cp=25% Vw=?
d= 1g/cm³
ms = Cp*mr/100%
ms = 25%*300g/100%
ms = 75g
mw = mr - ms
mw = 300g - 75g
mw = 225g
V = m/d
Vw = 225g/1g/cm³
Vw = 225cm³
Odp. Potrzeba 75g NaNO₃ i 225cm³ wody.