Atomic oxygen has oxidation number 0. Molecular oxygen also has 0 as oxidation number. It would be the same for five oxygen molecules as well.
It is an oxidation, assuming the products are CO2 and H2O
Oxidation of phosphorus. 4P(s) + 5O2(g) = 2P2O5(s). (Phosphorus pentoxide.)
2c2h2+5o2=4co2+2h2o.
oxidation number of I is -1. oxidation number of F is +1.
Zn has oxidation number +2; S has oxidation number -2
It is an oxidation, assuming the products are CO2 and H2O
Oxidation of phosphorus. 4P(s) + 5O2(g) = 2P2O5(s). (Phosphorus pentoxide.)
2c2h2+5o2=4co2+2h2o.
oxidation number of I is -1. oxidation number of F is +1.
Hydrogen's oxidation number is +1.Chlorin's oxidation number is +1.Oxygen's oxidation number is -2.
Zn has oxidation number +2; S has oxidation number -2
Silicon's oxidation number is +4.Oxygen's oxidation number is -2
The oxidation number for H is +1, and the oxidation number for O is -1.
Oxidation number of Si is +4.Oxidation number of O is -2.
Carbon atoms oxidation number is +2.Hydrogen's oxidation number is +1.Oxygen's oxidation number is -2.
Potassium's oxidation number is +1. Chromium's oxidation number is +6. Oxygen's oxidation number is -2.
Oxidation number of Li is +1. Oxidation number of oxygen is -2.