Verified Answer :

Willchemistry

Molar mass of :

O2 = 16  2 = 32 g/mol

CO2 = 12 + 16 2 = 44 g/mol

Balanced chemical equation :

1 CH4 + 2 O2 = 1 CO2 + 2 H2O
               ↓              ↓
             2 moles     1 mole

2 32 g O2 ----------> 1 44 g CO2
     x g O2 ------------> 10.0 g CO2

44 x = 2 3210.0

44 x = 640

\(x = \frac{640}{44}\)

\(x = 14.54 g\) of O2