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10g S=xg
96-208
x=21,7 g mozna otrzymac
Fe --- 56 g
S --- 32 g
FeS = 88g
32g ----- 88g
10g ----- x
rozwiązujemy:
32x = 880 g / / 32
x = 27,5 g
pozdrawiam :*
mS=32u
Fe + S---->FeS
32g S------88g FeS
10g S------xg FeS
x=10*88/32
x=27,5g FeS