| Keyword | CPC | PCC | Volume | Length string | Score |
|---|---|---|---|---|---|
| nitric acid molecular formula | 0.85 | 0.1 | 1855 | 29 | 11 |
| write the molecular formula for nitric acid | 1.79 | 0.4 | 4389 | 43 | 86 |
| what is the molecular formula of nitric acid | 0.58 | 1 | 4030 | 44 | 55 |
| chemical equation for nitric acid | 0.93 | 0.9 | 7176 | 33 | 8 |
