Could you please answer these questions+ details.
7. To form four particles of Fe2Oj a. How many atoms of Fe are needed? b. How many molecules of O2 are needed? 8. If 20 atoms of Fe are mixed with 20 molecules of oxygen and the reaction goes to completion a. The Fe consumes how much O2 as it reacts? b. How much O2 is left over? c. How many particles of Fe203 are formed? d. Which reactant is in excess? e. Which reactant is limiting?
Solution
Ans 7 :
a) Each particle of Fe2O3 has 2 atoms of Fe
So to form four particles of Fe2O3 , the number of Fe atoms required will be :
= 4 x 2
= 8 Fe atoms
b) Each Fe2O3 particle has 3 O atoms , i.e 2.5 O2 molecule
So to form 4 particles , the number of O2 molecules required will be :
= 4 x 1.5
= 6 O2 molecules
.
Could you please answer these questions+ details- 7- To form four part.docx
1. Could you please answer these questions+ details.
7. To form four particles of Fe2Oj a. How many atoms of Fe are needed? b. How many
molecules of O2 are needed? 8. If 20 atoms of Fe are mixed with 20 molecules of oxygen and the
reaction goes to completion a. The Fe consumes how much O2 as it reacts? b. How much O2 is
left over? c. How many particles of Fe203 are formed? d. Which reactant is in excess? e. Which
reactant is limiting?
Solution
Ans 7 :
a) Each particle of Fe2O3 has 2 atoms of Fe
So to form four particles of Fe2O3 , the number of Fe atoms required will be :
= 4 x 2
= 8 Fe atoms
b) Each Fe2O3 particle has 3 O atoms , i.e 2.5 O2 molecule
So to form 4 particles , the number of O2 molecules required will be :
= 4 x 1.5
= 6 O2 molecules
