We know this because the hydrogen symbol has a subscript three after it, whereas the nitrogen symbol has no number meaning there’s only one. Chemical reactions can be represented using symbol ...

Hydrogen is the lightest and most abundant ... gas that is present in a very small part of the atmosphere. The chemical ...

Butane, which has the chemical formula C₄H₁₀, has four carbon atoms and ten hydrogen atoms. And the formula of sulfuric acid is H₂SO4. And this tells us that one molecule of sulfuric acid ...