| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| is co2 heavier than air or lighter | 1.37 | 0.1 | 8851 | 99 |
| which is heavier co2 or air | 0.32 | 0.8 | 944 | 56 |
| carbon dioxide lighter or heavier than air | 1.89 | 0.2 | 3651 | 60 |
| is co2 gas heavier than air | 1.13 | 0.5 | 4524 | 46 |
| is co lighter or heavier than air | 0.83 | 0.6 | 656 | 3 |
| is co2 heavy than air | 0.53 | 1 | 5776 | 47 |
| is carbon dioxide lighter than air | 0.12 | 0.9 | 974 | 42 |
| is carbon dioxide heavier than air | 0.16 | 0.4 | 4007 | 50 |
| is co2 lighter than oxygen | 0.36 | 0.4 | 3992 | 99 |
| which is heavier air or carbon dioxide | 0.7 | 0.9 | 7516 | 19 |
| is co heavier than co2 | 1.85 | 0.1 | 7911 | 44 |
| what is heavier carbon dioxide or air | 1.72 | 0.1 | 6063 | 4 |
