Question

how to find the molecular mass of Al(OH)3

Answer 1

Given: The given compound is $Al(OH)_3$.

To find: We have to find the molecular mass.

Solution:

The given compound is $Al(OH)_3$.

The atomic mass of Al is 27 and oxygen is 16 grams.

The atomic mass of H is 1.

The compound has one Al atom, three oxygen atoms and three hydrogen atoms.

The molecular mass of aluminium hydroxide is as follows-

27+3×16+3×1

=27+48+3

=78

The molecular mass of aluminium hydroxide is 78 grams.

Answer 2

Given,

The compound Al(OH)₃.

To find,

We have to find the molecular mass of Al(OH)₃.

Solution,

The molecular mass of Al(OH)₃ is.

We can simply find the molecular mass of Al(OH)₃ by adding the molecular formula of the atoms present in the compound.

The molecular formula of Al(OH)₃ = Al + 3O +3H

                                                        = 27 + 48 +3

                                                        = 78 gm/mol

Hence, the molecular mass of Al(OH)₃ is 78 gm/mol.