Answer :

Answer:

[tex] \huge{ \boxed{ \rm \: 1.26 \: mol}}[/tex]

Explanation:

The number of moles can be found by using the formula:

[tex] \rm \: n = \dfrac{m}{M} [/tex]

where:

m is the mass in grams

M is the molar mass in g/mol

n is the number of moles

From the question:

m = 98.3 g

M of [tex](\text{Al(OH)}_3)[/tex] = 78 g/mol

[tex] \therefore \rm n = \dfrac{98.3}{78} \\ = \rm \: 1.26 \: mol[/tex]

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