Question

balance : HgO....... Hg+O2

Answer 1

2Hg - - - - -> 2Hg +O2

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Answer 2

Answer: Balanced equation is:

$2 HgO$ →  $2 Hg + O_{2}$

Explanation:

The same number of each type of atom should be present on both sides of the equation when balancing chemical equations.

Now the given equation is:

$HgO$ → $Hg + O_{2}$

There are $2$ oxygen atoms on the product side, so if we multiply $HgO$ with stoichiometric coefficient $2$; this equation will become:

$2 HgO$ → $Hg + O_{2}$

But now there would be $2$ $Hg$ atoms in reactant side and $1$ in product side, so to balance $Hg$ atoms, multiplying $Hg$ by $2$ in product side:

$2 HgO$ → $2 Hg + O_{2}$

This is the balanced equation.

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