Answer
A mole of $CO_2$ is $6.0221*10^{23}$ $CO_2$ molecules, 44.01 grams of $CO_2$, and 22.4 liters of $CO_2$ at STP.
Work Step by Step
A mole of any compound is $6.0221*10^{23}$ molecules of that compound. Furthermore, a mole of any compound is equal to the molar mass of that compound. Finally, every mole of a molecule at STP fills 22.4 liters of volume.
