| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| hydrogen gas equation | 1.59 | 0.3 | 7457 | 11 | 21 |
| hydrogen | 1.04 | 0.3 | 2204 | 48 | 8 |
| gas | 1.71 | 0.7 | 3446 | 22 | 3 |
| equation | 0.22 | 0.5 | 2336 | 53 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| hydrogen gas equation | 1.29 | 0.3 | 5861 | 45 |
| combustion of hydrogen gas equation | 0.17 | 0.9 | 3442 | 47 |
| hydrogen gas flow equation | 1.11 | 0.7 | 9347 | 73 |
| nitrogen gas + hydrogen gas balanced equation | 1.87 | 0.9 | 723 | 98 |
| hydrogen gas chemical equation | 1.74 | 0.8 | 9741 | 23 |
| hydrogen gas and oxygen gas balanced equation | 1.07 | 1 | 4168 | 96 |
| chemical equation that produces hydrogen gas | 1.84 | 0.5 | 7346 | 80 |
| hydrogen gas combustion chemical equation | 1.51 | 0.8 | 680 | 92 |
| combustion of hydrogen word equation | 0.06 | 0.1 | 2473 | 31 |
| combustion of hydrogen formula | 0.99 | 0.6 | 3779 | 8 |
| combustion of hydrogen balanced equation | 1.52 | 0.9 | 396 | 47 |
| combustion of hydrogen gas | 0.11 | 0.3 | 3591 | 28 |
| combustion reaction of hydrogen gas | 1.18 | 0.1 | 7112 | 71 |
| heat of combustion of hydrogen gas | 0.35 | 0.9 | 9050 | 18 |
| general equation of combustion of hydrocarbon | 0.63 | 0.4 | 4245 | 43 |
| general equation of combustion | 1.52 | 0.8 | 5865 | 67 |
| burning of hydrogen equation | 0.74 | 0.9 | 5590 | 86 |
| combustion of h2 equation | 0.42 | 0.7 | 4854 | 83 |
| word equation for hydrogen gas | 0.22 | 0.9 | 7269 | 7 |
