Question

fill out the table below based on the following chemical equation. the correct coefficients for the equation is: hgo → hg + o2 total # before (reactants) elements o hg total # after (reactants)

Explanation:

Step1: Write un - balanced equation

The un - balanced equation is $HgO
ightarrow Hg + O_2$.

Step2: Balance oxygen atoms

There are 2 oxygen atoms in $O_2$ on the product side. To balance the oxygen atoms, we need 2 moles of $HgO$ on the reactant side. So the equation becomes $2HgO
ightarrow Hg + O_2$.

Step3: Balance mercury atoms

Now, we have 2 mercury atoms on the reactant side (in $2HgO$). To balance the mercury atoms, we need 2 moles of $Hg$ on the product side. The balanced chemical equation is $2HgO
ightarrow 2Hg+O_2$.

Answer:

The coefficients are 2 for $HgO$, 2 for $Hg$, and 1 for $O_2$. So the balanced equation is $2HgO
ightarrow 2Hg + O_2$. The number of oxygen atoms before (in reactants) is 2 (from $2HgO$), and the number of mercury atoms before is 2 (from $2HgO$). After the reaction, the number of oxygen atoms is 2 (in $O_2$) and the number of mercury atoms is 2 (in $2Hg$).