4,5,6 pls potrzebuje na rano
Dam 10p​


456 Pls Potrzebuje Na Rano Dam 10p class=

Odpowiedź :

Odpowiedź:

4. NaNO3

5. Cp = (ms/mr )*100%

100g H2O - 160g KI

mr = ms + mH2O = 160g + 100g = 260g

Cp = (160g/260g)*100% = 61.5%

6.

Cp = 60%

dr = 1.5 g/cm^3

Vr = 0.2 dm^3 = 200cm^3

d = m/V

mr = dV = 1.5 * 200 = 300g

Cp = (ms/mr)*100%

ms = (Cp*mr)/100% = (60 * 300) / 100% = 180g