How many hydrogen atoms does a molecule of calcium hydroxide contain?
- AFour
- BThree
- CTwo
- DOne
Solution & Step-by-step Explanation
The chemical formula for calcium hydroxide is Ca(OH)
2
.
Within the parenthesis, there is one oxygen atom and one hydrogen atom.
The subscript 2 outside the parenthesis multiplies everything inside it, meaning there are 2×1=2 atoms of hydrogen and 2 atoms of oxygen in each molecule.
2
.
Within the parenthesis, there is one oxygen atom and one hydrogen atom.
The subscript 2 outside the parenthesis multiplies everything inside it, meaning there are 2×1=2 atoms of hydrogen and 2 atoms of oxygen in each molecule.