Nu pune punctele
y............40g.............................x
Fe + CuSO4 --> FeSO4 + Cu
56........180..............................64
[tex]c = \frac{md}{ms} \times 100 \\ md = \frac{c \times ms}{100} \\ md = \frac{20 \times 200}{100} = 40 \: g \: [/tex]
a)
[tex]x = \frac{64 \times 40}{180} = 14.22g[/tex]
b)
[tex]y = \frac{56 \times 40}{180} = 12.44g[/tex]
c)
md= 40+12,44=52,44g
ms=200+25=225g
[tex]c = \frac{md}{ms} \times 100 \\ c = \frac{52.44}{225} \times 100 = 23.30 \: \%[/tex]
