Question

Give one word/a few words for each of the following.

The fixed atomic ratio of carbon dioxide

Answer 1

The fixed atomic ratio of carbon dioxide is $3:8$.

• A compound is a substance made up of two or more elements chemically combined in a fixed proportion by mass.
• The chemical formula of Carbon dioxide is ${\mathrm{CO}}_2$.
• The elements forming Carbon dioxide are Carbon and Oxygen.
• These elements combines in a fixed ratio by mass
• $$\begin{gathered} \mathrm{Atomic}\mathrm{masses}:\mathrm{C}=12\mathrm{u},\mathrm{O}=16\mathrm{u}, \\ \mathrm{so}\mathrm{C}:{\mathrm{O}}_2=12\mathrm{u}:32\mathrm{u} \\ \mathrm{or}3:8 \end{gathered}$$
• Hence, the fixed atomic ratio of carbon dioxide is $3:8$.