What is the mass of 3.20x10^23 formula units of iron (III) oxide (Fe2O3)?

We have 84.84g of  FeO in 3.20*10^23 particles.

Data;

To solve this problem, we need to relate Avogadro number to the molar mass.

From molar mass - Avogadro's number relationship;

From the above calculations, 84.84g of FeO is present in 3.20*10^23 particles of  FeO.

Learn more on Avogadro's number here;

link

The mass of iron (III) oxide (Fe2O3) : 85.12 g

Given

3.20x10²³ formula units

Required

The mass

Solution

1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

mol of Fe₂O₃ :

mass of Fe₂O₃ (MW=160 g/mol)

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne