Question 1 im pretty sure it is <span>a. oxygen is in the formula.
</span>question 2 is b. dinitrogen pentoxide
Mostly in my opinion I think it’s the secound one
From the balanced chemical equation,
4Fe + 3O₂ --> 2Fe₂O₃
it is evident that for every 4 moles of Fe (iron), 2 moles of iron (III) oxide will be formed. Using the same ratio,
8 moles of iron x (2 moles Fe₂O₃ / 4 moles of Fe)
= 4 moles Fe₂O₃
Therefore, the answer is 4 moles.
B.2C2H6 + 5O2 >2CO2 +3H2O
