Respuesta :
the answer is 11
11 O2 is 22 oxygen atoms
8 H2o means there is 8 atoms of oxygen needed here
7 CO2 means you need 14 oxygen atoms here
14 Pkus 8 is 22
11 O2 is 22 oxygen atoms
8 H2o means there is 8 atoms of oxygen needed here
7 CO2 means you need 14 oxygen atoms here
14 Pkus 8 is 22