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  Encyclopedia of Keywords > Molecular Formula > Empirical Formula   Michael Charnine

Keywords and Sections
MANNING FORMULA
FORMULA MASS
HYDROGEN ATOM
MOLECULAR
COMPOUNDS
DIFFERENT COMPOUNDS
ELEMENTAL ANALYSIS
ATOMS
ATOM
ACETIC
WAVELENGTHS
CAUCHY
SUBSCRIPTS
SUBSTANCE
COMPOUND
MOLECULAR WEIGHT
MOLECULAR FORMULA
EMPIRICAL FORMULA
Review of Short Phrases and Links

    This Review contains major "Empirical Formula"- related terms, short phrases and links grouped together in the form of Encyclopedia article.

Definitions

  1. An empirical formula is a molecular formula reduced to the lowest common denominator.
  2. The empirical formula is C 20 H 21 O 4 Cl and the molecular weight is 360.83; fenofibrate is insoluble in water.
  3. The empirical formula is often the same as the molecular formula but not always.
  4. Its empirical formula is C 2 H 6 O, making it an isomer of dimethyl ether.

Manning Formula

  1. The Manning formula is an empirical formula for open channel flow, or flow driven by gravity.

Formula Mass

  1. The formula mass of the empirical formula above is 126u.

Hydrogen Atom

  1. Cyanogen azide is trouble right from its empirical formula: CN4, not one hydrogen atom to its name.

Molecular

  1. There are compounds that have the same molecular and empirical formula.

Compounds

  1. CH could be the empirical formula for benzene (C6H6) or ethyne (C2H2) or several other compounds.
  2. Many compounds may have the same empirical formula.
  3. Compounds may also share an empirical formula but dramatically differ in their molecular formulae.

Different Compounds

  1. Different compounds can have the same empirical formula.

Elemental Analysis

  1. Dutch chemist Gerhardus Johannes Mulder carried out elemental analysis of common proteins and found that nearly all proteins had the same empirical formula.

Atoms

  1. The empirical formula of glucose, CH 2 O, shows only the proportion, not the actual number of atoms.
  2. The formula weight is the sum of the atomic weights of the atoms in an empirical formula.

Atom

  1. In chemistry, the empirical formula of a chemical compound is a simple expression of the relative number of each type of atom in it.

Acetic

  1. The empirical formula for acetic acid is CH 3 COOH, with a molecular weight of 60.05.
  2. Acetic acid has the empirical formula C 2 H 4 O 2. This is often written as CH 3 -COOH, CH 3 COOH, or CH 3 CO 2 H to better reflect its structure.
  3. Acetic acid has the molecular formula C 2 H 4 O 2 (empirical formula CH 2 O).

Wavelengths

  1. Nobody could predict the wavelengths of the hydrogen lines until 1885 when the Balmer formula gave an empirical formula for the visible hydrogen spectrum.

Cauchy

  1. The wavelength dependency of a material's refractive index is usually quantified by an empirical formula, the Cauchy or Sellmeier equations.

Subscripts

  1. For ionic compounds and other non-molecular substances an empirical formula may be used, in which the subscripts indicate the ratio of the elements.

Substance

  1. More information is required to construct a molecular formula than is required to obtain the empirical formula of a substance.
  2. The empirical formula can be obtained from the elemental analysis of a substance.

Compound

  1. The empirical formula of a molecule is the simplest integer ratio of the chemical elements that constitute the compound.

Molecular Weight

  1. Isosorbide dinitrate is a white to off-white, crystalline powder with the empirical formula C 6 H 8 N 2 O 8 and a molecular weight of 236.14.
  2. Mometasone furoate monohydrate is a white powder, with an empirical formula of C 27 H 30 Cl 2 O 6 •H 2 O, and a molecular weight of 539.45.
  3. The empirical formula of lovastatin is C 24 H 36 O 5 and its molecular weight is 404.55.

Molecular Formula

  1. If a compound is molecular, the molecular formula is preferred to the empirical formula since it gives more information.
  2. Its molecular formula is variously represented as EtOH, CH 3 CH 2 OH, C 2 H 5 OH or as its empirical formula C 2 H 6 O (which it shares with dimethyl ether).
  3. The molecular formula is then determined from both the empirical formula and the molecular mass of a substance.

Empirical Formula

  1. In chemistry, the empirical formula of a chemical is a simple expression of the relative number of each type of atom (called a chemical element) in it.
  2. The molecular mass of the compound is provided; use this value and the empirical formula to determine the molecular formula for the unknown compound.
  3. In order to determine a molecular formula of an unknown compound from its empirical formula, you must know the molecular weight of the compound.

Categories

  1. Molecular Formula
  2. Molecular Weight
  3. Nature > Matter > Mass > Molecular Mass
  4. Subscripts
  5. Dimethyl Ether
  6. Books about "Empirical Formula" in Amazon.com

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  Short phrases about "Empirical Formula"
  Originally created: May 07, 2008.
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