What is the mass of 5 moles of Fe2O3 ?

with showing the work and explaining how they recieved the answer

1 Answer
Feb 28, 2018

798g

Explanation:

Molar mass of different substances:
Fe: 55.8 gmol^-1
O: 16.0 gmol^-1

Molar mass of Fe_2O_3
=55.8*2+16*3
=159.6 gmol^-1

Which means that for each mole of Fe_2O_3, it weighs 159.6g

Mass of 5 moles of Fe_2O_3
=159.6*5
=798g