Question

Can somebody please balance this !?!

Answer 1

O2 + 2CO = 2CO2. That should be it

Answer 2

`\mathrm{CO}_2` has 2 oxygens for every carbon.
`\mathrm{CO}` will contribute one of each for every molecule. You then have to have an even multiple of
`\mathrm{CO}` molecules to not end up with an odd number of oxygens.

So if you take
`2\mathrm{CO}`, you should end up with 2 carbons on the RHS.
`2\mathrm{CO}_2` then has 4 oxygens. 2 of them are already accounted for, so you just need one
`\mathrm O_2` to balance out the reaction.


`1\mathrm O_2+2\mathrm{CO}\Rightarrow2\mathrm{CO}_2`