Odpowiedzi

2010-04-12T16:08:42+02:00
1.
2 HgO -> O₂ + 2 Hg
60 g - m
432 u - 32 u

m = 32 u * 60 g / 432 u
m = 4,44 g

2.
2 Fe + 3 S -> Fe₂S₃
11,2 g - m
112 u - 208 u

m = 11,2 g * 208 u / 112 u
m = 20,8 g

3.
2 H₂ + O₂ -> 2 H₂O
200 g - m
4 u - 36 u

m = 200 g * 36 u / 4 u
m = 1800 g
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