Question

What is the mass of 5 moles of Fe2O3?
A) 360 g
B) 320 g
C) 400 g
D) 440 g

Answer 1

The mass of 5 moles of Fe2O3 is approximately 798.45 g.

Step-by-step explanation:

The molar mass of Fe2O3 is calculated by adding up the atomic masses of iron (Fe) and oxygen (O). The atomic mass of Fe is 55.845 g/mol and the atomic mass of O is 16.00 g/mol.

So, the molar mass of Fe2O3 is calculated as follows:

1. (2 mol of Fe x 55.845 g/mol) + (3 mol of O x 16.00 g/mol)
2. 111.69 g + 48.00 g
3. 159.69 g/mol

To find the mass of 5 moles of Fe2O3, we multiply the molar mass by the number of moles:

5 mol x 159.69 g/mol = 798.45 g

Therefore, the mass of 5 moles of Fe2O3 is approximately 798.45 g.