Balance the following the chemical equation:

C2H6 + O2 → CO2 + H2O

Blank 1:
Blank 2:
Blank 3:
Blank 4:

The balanced equation for the chemical reaction is:

C2H6 + 7/2 O2 → 2 CO2 + 3 H2O

Blank 1: 2
Blank 2: 7/2
Blank 3: 2
Blank 4: 3