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m(r)= 500g
T= 95C
m(s)=?
m(H₂O)=?
r=170g/100g H₂O
m(s) + m(rozp) -> m(r)
170g + 100g -> 270g
x g + y g -> 500g
Metoda "na krzyż":
x=100g*500g/270g=314,81g NaNO₃ - tyle gram NaNO₃ należy rozpuścić.
y=500g*170g/270g=185,19g H₂O