Answer to Question #162118 in General Chemistry for Jalen Hawk

Question

The following compounds all contain oxygen: CO, CO₂, Na₂CO₃, H₂O.  Which of these compounds has the largest percent composition of oxygen?

Answer 1

In order of largest percent combination to lowest,

H₂O, CO₂, CO, Na₂CO₃

which H₂O having the largest percent combination and Na₂CO₃ having the smallest percent combination