Answer : Molar mass of the [tex]Fe_2O_3[/tex] is 159.7 g/mol.
Molar mass of the [tex]Al_2O_3[/tex] is 101.96 g/mol.
Explanation:
Molar mass of [tex]Fe_2O_3[/tex]:
[tex]\text{Atomic mass of Fe}\times 2+\text{Atomic mass of O}\times 3[/tex]
Molar mass = [tex]55.85 g/mol\times 2+16.00 g/mol\times 3=159.7 g/mol[/tex]
Molar mass of the [tex]Fe_2O_3[/tex] is 159.7 g/mol
Molar mass of [tex]Al_2O_3[/tex]:
[tex]\text{Atomic mass of Al}\times 2+\text{Atomic mass of O}\times 3[/tex]
Molar mass = [tex]26.98 g/mol\times 2+16.00 g/mol\times 3=101.96 g/mol[/tex]
Molar mass of the [tex]Al_2O_3[/tex] is 101.96 g/mol
The molar mass of Fe2O3 and Al2O3 is 160.0 g/mol and 102.0 g/mol respectively.
The molar mass of a compound is the addition of the molar weights of the individual atoms that make up the compound.
In this case, the molar weight of Fe is 56, O is 16, and Al is 27 g/mol respectively.
Fe2O3 = (56x2) + (16x3)
= 160.0 g/mol
Al2O3 = (27x2) + (16x3)
= 102.0 g/mol
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