Texas Longhorn cattle can efficiently process many grassland products which go untouched by other breeds. Examples include huisache, huajillo brush, willows, mesquite, yucca, and many other esoteric strains of substandard fare.
chemical formula a combination of symbols used to express the chemical components of a substance. empirical formula a chemical formula that expresses the proportions of the elements present in a substance.
A chemical formula shows the atoms and their respective quantity in a compound or molecule. The chemical formula CO2 reads as carbon, one atom, oxygen, two atoms. Another exam â¦ ple is H2O (water). A chemical reaction is something that happens between two chemicals  when they interact.