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m FeCl2= 56g + 71 g = 127g
Fe + 2HCl ---> FeCl2 + H2
1,4g xg
56g 127g
xg=1,4g * 127g/ 56g
xg= 3, 175g FeCl2
Odp. W wyniku reakcji powstanie 3,175 gramów FeCl2.