The molar mass of aluminum oxide (Al2O3) is 102.0 g/mol. What is the correct way to write the inverted molar mass of aluminum oxide as a conversion factor?

Answers

Answer 1
The molar mass of aluminum oxide is 102.0 g/mol =>

     1 mol Al2 O3 = 102.0 g

=> 1 = 1 mol Al2O3 / 102.0 g = 1 / 102.0 g/mol

So, the conversion factor, which you can use to convert mass in grams of aluminum oxide to number of moles is 1 / 102.0 g/mol.

Answer: 1 / 102.0 g/mol

Answer 2

The inverted molar mass of aluminum oxide ([tex]\rm Al_2O_3[/tex]) is 0.00980 mole/gram.

Molar mass is the mass of one mole of a substance. It is expressed in units of grams per mole (g/mol).

To calculate the inverted molar mass of aluminum oxide as a conversion factor, you take the reciprocal of the molar mass.

= [tex]\rm \dfrac{1 \ mole\ \rm Al_2O_3}{102.\ g \rm \ Al_2O_3}[/tex]

= 0.00980 moles/g

Therefore, take the reciprocal of the molar mass to compute the inverted molar mass of aluminum oxide as a conversion factor. And 0.00980 mole/gram is the inverted molar mass of aluminum oxide.

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