| hydrogen gas | 9 |
| carrier gas | 6 |
| flue gas | 6 |
| shale gas | 6 |
| chlorine gas | 3 |
| fuel gas | 3 |
| pressure | 0.61 |
| equilibrium | 0.60 |
| the atmosphere | 0.49 |
| air | 0.47 |
| the tank | 0.41 |
| high temperature | 0.36 |
| the ground | 0.35 |
| shale | 0.34 |
| solution | 0.34 |
| low pressure | 0.32 |
| More » |
| exert pressure | 0.61 |
| fall into black hole | 0.61 |
| generate energy | 0.61 |
| surround planet | 0.61 |
| turn into liquid | 0.60 |
| consist of methane | 0.59 |
| generate electricity | 0.58 |
| produce heat | 0.58 |
| build up pressure | 0.57 |
| mix with other gases | 0.57 |
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| explosion | 0.46 |
| bloating | 0.45 |
| death | 0.41 |
| flatulence | 0.40 |
| acidification | 0.38 |
| fire | 0.37 |
| headache | 0.36 |
| dizziness | 0.35 |
| asphyxiation | 0.33 |
| nausea | 0.32 |
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| general rule | 0.29 |
| reduction | 0.29 |
| fluid | 0.59 |
| greenhouse gases | 0.39 |
| substance | 0.35 |
| vapor | 0.30 |
| other gases | 0.30 |
| cooking | 0.64 |
| heating | 0.63 |
| power generation | 0.60 |
| lighting | 0.57 |
| hot water | 0.55 |
| shielding | 0.43 |
| electric options | 0.41 |
| company travel | 0.40 |
| cooling | 0.30 |
| the transaction | 0.27 |