Chemical reaction with both O2 and CO2 released as products?

[Immutef]

Is anyone familiar with any chemical reactions that release both oxygen and carbon dioxide gas as products?

Or any reactions where oxygen and carbon dioxide are both reactants?

Thanks.

[NobodySpecial]

There are a few reactions that generate oxygen, they are called oxygen candles and are used as emergency oxygen supplies. I suppose one of those + some charcoal would also give you CO2