Definition of Empirical formula. Meaning of Empirical formula. Synonyms of Empirical formula

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Definition of Empirical formula

Empirical formula
Empiric Em*pir"ic, Empirical Em*pir"ic*al, a. 1. Pertaining to, or founded upon, experiment or experience; depending upon the observation of phenomena; versed in experiments. In philosophical language, the term empirical means simply what belongs to or is the product of experience or observation. --Sir W. Hamilton. The village carpenter . . . lays out his work by empirical rules learnt in his apprenticeship. --H. Spencer. 2. Depending upon experience or observation alone, without due regard to science and theory; -- said especially of medical practice, remedies, etc.; wanting in science and deep insight; as, empiric skill, remedies. Empirical formula. (Chem.) See under Formula. Syn: See Transcendental.
Empirical formula
Formula For"mu*la, n.; pl. E. Formulas, L. Formul[ae]. [L., dim. of forma form, model. SeeForm, n.] 1. A prescribed or set form; an established rule; a fixed or conventional method in which anything is to be done, arranged, or said. 2. (Eccl.) A written confession of faith; a formal statement of foctrines. 3. (Math.) A rule or principle expressed in algebraic language; as, the binominal formula. 4. (Med.) A prescription or recipe for the preparation of a medicinal compound. 5. (Chem.) A symbolic expression (by means of letters, figures, etc.) of the constituents or constitution of a compound. Note: Chemical formul[ae] consist of the abbreviations of the names of the elements, with a small figure at the lower right hand, to denote the number of atoms of each element contained. Empirical formula (Chem.), an expression which gives the simple proportion of the constituents; as, the empirical formula of acetic acid is C2H4O2. Graphic formula, Rational formula (Chem.), an expression of the constitution, and in a limited sense of the structure, of a compound, by the grouping of its atoms or radicals; as, a rational formula of acetic acid is CH3.(C:O).OH; -- called also structural formula, constitutional formula, etc. See also the formula of Benzene nucleus, under Benzene. Molecular formula (Chem.), a formula indicating the supposed molecular constitution of a compound.

Meaning of Empirical formula from wikipedia

- In chemistry, the empirical formula of a chemical compound is the simplest whole number ratio of atoms present in a compound. A simple example of this...
- For example, the empirical formula for glucose is CH2O (twice as many hydrogen atoms as carbon and oxygen), while its molecular formula is C6H12O6 (12 hydrogen...
- in the molecule, so that the molecular formula for glucose is C6H12O6 rather than the glucose empirical formula, which is CH2O. Except for the very simple...
- The Manning formula or Manning's equation is an empirical formula estimating the average velocity of a liquid in an open channel flow (flowing in a conduit...
- and semi-empirical methods can be found in com****tional chemistry. Empirical distribution function Empirical formula Empirical measure Empirical relationship...
- molecules. The empirical formula is often the same as the molecular formula but not always. For example, the molecule acetylene has molecular formula C2H2, but...
- diamond or graphite). In most cases the formula representing a formula unit will also be an empirical formula, such as calcium carbonate (CaCO3) or sodium...
- the semi-empirical m**** formula (SEMF) (sometimes also called the Weizsäcker formula, Bethe–Weizsäcker formula, or Bethe–Weizsäcker m**** formula to distinguish...
- distance represented as sea level great circle degrees. The Lillie empirical formula is:   M L = log 10 ⁡ A − 2.48 + 2.76   log 10 ⁡ Δ   {\displaystyle...
- determination of the chemical composition ("empirical formula") of mesitylene was incorrect. The correct empirical formula was provided by August W. von Hofmann...