True.
A catalyst is a substancr that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
Your answer would have to be #3
Explanation:
1 miole of Fe2O is 6.22 × 10^-23
5mole of Fe2O = 5×6.22×10^-23
=31.1×10^-23
Lithium,
Electrons are 3
Protons are 3
Neutrons are 4
