zad.1
R CuSO4= 55 g/100 g H2O
55 g CuSO4------ 100 g H2O
x g CuSO4------ 400 g H2O
x= 220 g CuSO4
zad 2
R CuSO4 w temp 60= 40 g/100 g H2O
RCuSO4 w temp 20= 20 g /100 g H2O
60°C:. 40 g CuSO4------100 g H2O
x g CuSO4 ----- 550 g H2O
x= 220 g CuSO4
20°C:. 20 g CuSO4------- 100 g H2O
y g CuSO4------- 550 g H2O
y= 110 g CuSO4
ilość wykrystalizowanego CuSO4= 220-110=110 g
zad.3
R CuSO4 w temp 40= 30 g/100 g H2O
270 g CuSO4--------x g H2O
30 g CuSO4------- 100 g H2O
x= 900 g H2O