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 equation describes what happens in a chemical reaction. The equation identifies the reactants (starting materials) and products (resulting substances), the formulas of the participants, the phases of the participants (solid, liquid, gas), the direction of the chemical reaction, and the amount of each substance.