| 1) | The O2 atoms have higher kinetic energy than the He atoms |
| 2) | The He atoms have higher kinetic energy than the O2 atoms |
| 3) | All atoms have exactly the same kinetic energy |
| 4) | Some O2's have higher kinetic energy than some He atoms. Some He have higher kinetic energy than some O2. But on average, they all have the same kinetic energy |
