If 3.03 mol of ethane (C2H6) undergoes combustion according to the unbalanced equation
C2H6+O2 > CO2+ H2O
how many moles of O is required?

10.06 mol O₂

Explanation:

2C₂H₆ + 7O₂ => 4CO₂ + 6H₂O

Given 3.03 moles C₂H₆ combustion reaction requires 7/2(3.03 mol) O₂

= 10.06 mol O₂

sure im new too!

explanation:

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.