| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| composition of air by mass | 0.45 | 0.3 | 2770 | 3 | 26 |
| composition | 0.04 | 0.3 | 3819 | 98 | 11 |
| of | 0.82 | 0.3 | 6622 | 39 | 2 |
| air | 1.52 | 0.6 | 6030 | 23 | 3 |
| by | 0.56 | 0.6 | 7606 | 98 | 2 |
| mass | 1.38 | 0.8 | 7406 | 71 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| composition of air by mass | 1.76 | 0.8 | 3039 | 45 |
| air composition mass fraction | 1.15 | 0.4 | 9794 | 91 |
| composition of dry air on mass basis is | 1.15 | 1 | 8687 | 54 |
| exact composition of air | 1.91 | 1 | 1009 | 7 |
| explain the composition of air | 0.92 | 1 | 7242 | 98 |
| what is the composition of the air | 0.89 | 0.4 | 2190 | 97 |
| describe the composition of air | 1.65 | 1 | 9837 | 94 |
| give the composition of air | 0.75 | 1 | 3863 | 57 |
| composition of air by volume | 1.03 | 0.3 | 5214 | 87 |
| what is the composition of atmospheric air | 1.8 | 0.9 | 5115 | 65 |
| what is the mass of the air | 0.07 | 1 | 4137 | 79 |
| the chemical composition of air | 0.81 | 0.3 | 8238 | 13 |
| how does air have mass | 1.49 | 0.7 | 3606 | 36 |
| air composition and structure | 1.59 | 0.1 | 8713 | 22 |
