Question

Calcium carbonate can break down to form calcium oxide and carbon dioxide. caco3 → cao + co2 the oxygen atoms on the product side are not balanced because there are only two oxygen atoms in co2 not balanced because there is only one oxygen atom in cao. balanced because the total number of oxygen atoms is 3. balanced when a coefficient of 3 is placed in front of co2.

Answer 1

balanced because the total number of oxygen atoms is 3.

Answer 2

The balanced chemical equation has been $\rm 3\;CaCO_3\;\rightarrow\;3\;CaO\;+\;3\;CO_2$.

The balanced equation can be given to follow the law of conservation of mass. with equal  number of atoms of each elements has been present on the product and the reactant side.

The given equation has been written with addition of 3 as a coefficient to the carbon dioxide has been:

$\rm CaCO_3\;\rightarrow\;CaO\;+\;3\;CO_2$

The number of elements of oxygen on product side has been 6 atoms for carbon dioxide and 1 oxygen atom for calcium oxide. The total oxygen on product side has been 7. The reactant has the presence of 3 oxygen atoms.

The reaction has been balanced with equal atoms on both the sides as:

$\rm 3\;CaCO_3\;\rightarrow\;3\;CaO\;+\;3\;CO_2$

For more information about balanced equation, refer to the link:

https://brainly.com/question/8062886