Question

What is the formula mass of `Ca(OH)_2`?

Answer 1

`74.1`

Explanation:

The atomic mass of Calcium (Ca) is 40.1

The atomic mass of Oxygen (O) is 16.

The atomic mass of Hydrogen (H) is 1.

Therefore the relative formula mass would be

`40.1 + ((16+1)xx2)` = `40.1 + 34`

= `74.1`