But as far as their structure is concerned, these RNAs all share the same basic single-stranded chemical structure with, in some cases, higher-order structures obtained through complementary base ...

The chemical formula of a covalent molecular substance ... the simplest ratio of atoms/ions in the substance. Sometimes the name of the compound gives information about the formula of that compound.

Chemical formulae The chemical formula for a substance shows how many atoms of each element are present in a molecule, or the proportion of atoms of each element. The formula can be worked out ...