Question

part 2 of 3
calcualte the molar mass of fe₂o₃?
○159.70 g/mol
○71.85 g/mol
○127.70 g/mol
○103.85 g/mol

Explanation:

Step1: Find atomic masses

Atomic mass of Fe: $55.85$ g/mol, O: $16.00$ g/mol.

Step2: Calculate Fe contribution

For $Fe_2$: $2\times55.85 = 111.70$ g/mol.

Step3: Calculate O contribution

For $O_3$: $3\times16.00 = 48.00$ g/mol.

Step4: Sum contributions

Molar mass = $111.70 + 48.00 = 159.70$ g/mol.

Answer:

159.70 g/mol (corresponding to the option: 159.70 g/mol)