Lämmastikhappe
Lämmastikhappe does not appear to correspond to a widely recognized chemical term in Finnish or English. It may be a misspelling or a regional/archaic name for another compound, such as typpihappo (nitric acid) or a related nitrogen-containing acid. To provide an accurate wiki-style article, please confirm the specific substance you intend. If you mean nitric acid (typpihappo, HNO3) or another nitrogen-based acid, I can write a concise, neutral article under 300 words once you specify.