empirical formula

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

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

empirical formula

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

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

empir′ical for′mula

a chemical formula showing the elements of a compound and their relative proportions, as (CH₂O)_n or H₂O.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

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

formule brute

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References in periodicals archive

So, based on the acquired data, we can apply empirical formula to the mines in the Sherwan area for estimation/prediction of their subsidence.

The causes and prevision of mine subsidence in lesser Himalayas, Abbottabad

For instance, even many chemists don't realise that polyethylene (PE) and polypropylene (PP) don't mix, though they are the two of the most common forms of plastic and both have the same empirical formula. That's why separating plastics at the recycling centre is so important.

Plastic can be put to better use, don't let it choke us

Miltefosine a new compound, derived from alkyl-phospholipids, has demonstrated its antileishmanial and antineoplastic efficacy.4 Miltefosine is the first and still the only oral agent that is being used against all types of leishmaniasis since its registration in 2002.4 Drug was approved in India first and has been used for the past decade in 14 countries for the treatment of leishmaniasis.2 The chemical name of miltefosine is hexadecylphosphocholine and the empirical formula is C21H46NO4P, yielding a molecular weight of 407.57 g/mol.4 Miltefosine acts primarily on Leishmania by affecting the promastigote and amastigote stages of the species.

Miltefosine: a promising agent for leishmaniasis

Finally, single-factor tests were conducted to find out empirical formula of milling force, which was used to further investigate the influence of processing factors on milling force.

Study of milling on [Al.sub.2][O.sub.3] ceramic/GFRP component using sintering diamond tools

Method A: Ultimate Analyses, Empirical Formula for Higher Heating Values Based on Fuel (HHV), and Stoichiometric Oxygen (HHVO).

Ranking Renewable and Fossil Fuels on Global Warming Potential Using Respiratory Quotient Concept

Within the selected range of experimental parameters, the empirical formula of the cutting force was:

Experimental Research on Parameter Optimization for High Efficiency Hard Turning of Ultrahigh Strength Steel 42CrMo

Research on the empirical formula for compressive strength estimation and behaviour of column confined using Fiber Reinforced Polymer (FRP) has been looked into extensively over the past two decades by many researchers.

Compressive Strength of Post Fire Exposed Concrete Column Wrapped with Fiber Reinforced Polymer

The calculation for pressure drop is called the empirical formula:

Advantages of using flow meters to reduce pressure drop