Can anyone please help me with this question? Thanks a lot :D
A chemist runs the following reaction in a closed vessel:

2C2H6 + 7O2 4CO2 + 6H2O

After it is complete, she collects 10.0 grams of CO2, 6.1 g of H2O, and 5.0 grams of O2. What was the limiting reactant?