Question

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

The fixed atomic ratio of water

Answer 1

The fixed atomic ratio of water is $1:8$.

• The chemical formula of water is ${\mathrm{H}}_2\mathrm{O}$.
• Water is a compound made up of Hydrogen and Oxygen.
• These elements are combined in a fixed proportion by mass i.e., $1:8$.
• $$\begin{gathered} \mathrm{Atomic}\mathrm{masses}:\mathrm{H}=1\mathrm{u},\mathrm{O}=16\mathrm{u}, \\ \mathrm{so}{\mathrm{H}}_2:\mathrm{O}=2\mathrm{u}:16\mathrm{u} \\ \mathrm{or}1:8 \end{gathered}$$