Answer:
What does that even mean?
Explanation:
Answer: Option A) 2 atoms
Explanation:
4Al + 302 ---> 2Al2O3
4 moles of Al reacts with 3 molecules of O2
So 1.10 moles of Al should reacts with Z molecules of O2 (Assume Z is unknown)
i.e 4 moles of Al = 3 molecules of O2
4 moles of Al = 6 atoms of O2 (since 1 molecule of oxygen has two atoms of oxygen)
1.10 atoms of Al = Z atoms of O2
To get the value of Z, cross multiply
Z x 4 moles = 6 atoms x 1.10 moles
4Z = 6.6
Divide both sides by 4
4Z/4 = 6.6/4
Z = 1.65 atoms (approximately 2 atoms)
Thus, 2 atoms of the excess reactant oxygen remains.
A spontaneous oxidation-reduction reaction
