I think you need to redo your work. Burning hydrogen yields only H2O...not sure where you came up with CO2.
Easy. (1) I’m an idiot. (2) I had only two sips of my morning covfefe when I wrote that bonehead comment.
In my weak and candy-ass defense, I will say it might not be long before some moron greater than me reminds us all of the terrors regarding the dangerous chemical, Di-Hydrogen Oxide.