empirical formula


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empirical formula

n.
A chemical formula that indicates the relative proportions of the elements in a molecule rather than the actual number of atoms of the elements.

empirical formula

n
1. (Chemistry) a chemical formula indicating the proportion of each element present in a molecule: C6H12O6 is the molecular formula of sucrose whereas CH2O is its empirical formula. Compare molecular formula, structural formula
2. (General Physics) a formula or expression obtained from experimental data rather than theory

empir′ical for′mula


n.
a chemical formula showing the elements of a compound and their relative proportions, as (CH2O)n or H2O.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.empirical formula - a chemical formula showing the ratio of elements in a compound rather than the total number of atoms
chemical formula, formula - a representation of a substance using symbols for its constituent elements
Translations
References in periodicals archive ?
Empirical formula given by the authors (with all REEs indicated as Ce) is: (C[a.
In General information section the following data are displayed: name, CAS #, IUPAC name, Common name, Common synonyms, Acronym, Empirical formula, Molecular weight, Chemical class, Mixture, Alkyl distribution, Primary amine concentration, Product contents, Free acid, Amine number, Moisture content, Silicone content, and Solids content
No empirical formula is given in the paper, but the abstracter has produced the one given here.
In General information section the following data are displayed: name, CAS #, IUPAC name, Common name, Common synonyms, Abbreviations, Empirical Formula, Molecular mass, RETECS Number, EPA Code, Chemical Class, Mixture, EINECS number, NFPA Classification, NFPA Health, NFPA Flammability, NFPA Reactivity, WHMIS Classification (Canadian), HMIS Health, HMIS Fire, HMIS Reactivity, HMIS Personal protection, OSHA Hazard Class, UN Risk Phrases, R, UN Safety Phrases, S, DOT Hazard Class, UN/NA, ADR /RID Class, ICAO/IATA Class, IMDG Class, Food law approvals, Producers, Highly recommended for polymers (list of polymers), Recommended for polymers (list of polymers), Fields of application, Other Properties
The empirical formula is C23H14Na2O11; the molecular weight is 512.
The subscripts of the empirical formula given here are slightly different from those given in the paper.
Its empirical formula is C21H31N3O5 2H2O and its structural formula is:
The empirical formula of finasteride is C23H36N2O2 and its molecular weight is 372.
Within the selected range of experimental parameters, the empirical formula of the cutting force was:
Dp,solo] obtained from the empirical formula in Figure 9 are substituted into Equation (4) to determine the aerodynamic drag reduction rate [DRR.
Empirical formula was proposed to predict the diffusion decay coefficient for chloride ions in concrete with OPC or BBC, considering W/B and the replacement ratio of mineral admixtures such as GGBFS and FA.
In engineering, empirical formula between the parameters can be derived from experiment data by the method of dimensional analysis which also enabled weighing the magnitude of each operating parameter [21].

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