It usually depends on the amount of energy that an electron has or gains
Answer:
it's a precipitation reaction.
Explanation:
the solid produced is insoluble with water–making it a precipitate.
Answer:
m(O₂) = 3.666 g
Explanation:
The rusting of iron is due to its reaction with oxygen. The balanced equation is:
4 Fe + 3 O₂ → 2 Fe₂O₃
According to Lavoisier's law of conservation of mass, the sum of the masses of the reactants is equal to the sum of the masses of the products.
m(reactants) = m(products)
m(Fe) + m(O₂) = m(Fe₂O₃)
8.531 g + m(O₂) = 12.197 g
m(O₂) = 3.666 g