Odpowiedzi

2009-11-03T15:18:44+01:00
FeS=56g+32=88g


32gS-------------88gFeS
10gS--------------x
x=27,5
2009-11-03T17:06:00+01:00
Fe --- 56 g
S --- 32 g
FeS = 88g
32g ----- 88g
10g ----- x
32x = 880 g / / 32
x = 27,5 g