Question

1. _ hgo → _ hg + ___ o

Explanation:

Step1: Balance oxygen atoms

In \(HgO\), there is 1 oxygen atom. In \(O_2\), there are 2 oxygen atoms. To balance oxygen, put 2 in front of \(HgO\). So we have \(2HgO
ightarrow Hg + O_2\).

Step2: Balance mercury atoms

After putting 2 in front of \(HgO\), there are 2 mercury atoms on the left - hand side. So we put 2 in front of \(Hg\) on the right - hand side.

Answer:

\(2HgO
ightarrow 2Hg+O_2\)