Solid carbon (C) can burn in oxygen (O2). Select

the answer that completes this chemical equation

correctly.

C + O2 →?

CO2

C+2O

The complete chemical equation is as;

C + O₂ → CO₂

Explanation:

According to law of mass conservation the mass in isolated system can neither be created nor be destroyed. Applying this law to given synthesis reaction means that,

(i) If there is one carbon atom on left hand side of the equation (reactant side) then there must be on e carbon on right hand side (product side) of the equation.

(ii) If there are two oxygen atoms on left hand side of the equation (reactant side) then there must be two oxygen atoms on right hand side (product side) of the equation.

Hence, from equation it is proved that it obeys the said law and the number of atoms on both side are equal i. e.

Reactant Side Product Side

Carbon 1 1

Oxygen 2 2