Question

What is the molecular mass of magnesium hydroxide

Answer 1

Molecular Formula for Magnesium Hydroxide 
= Mg(OH)₂

Now , molar mass of Magnesium = 24 u
                                   Oxygen = 16 u
                               & Hydrogen = 1 u

Molecular mass = 1 * Mg + 2 * O + 2 * H
= 1 * 24 + 2 * 16 + 2 * 1
= 24 + 32 + 2
= 56 + 2
= 58 u

Answer 2

Given: Magnesium hydroxide.

To find: We have to find the molecular mass.

Solution:

The molecular mass can be determined as follows-

The chemical formula of magnesium hydroxide is $Mg(OH)_2$.

The atomic mass of Mg is 24.

The atomic mass of H is 1 and the atomic mass of Oxygen is 16.

This compound has one Mg, two hydrogens and two oxygen atoms.

Thus molecular mass is as follows-

$24 + 2 \times 16+ 2 \times 1 \\ 24 + 32 + 2 \\ = 58$

The molecular mass of magnesium hydroxide is 58u.