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单词 empirical formula
释义

empirical formula


noun Chemistry.

a chemical formula indicating the elements of a compound and their relative proportions, as (CH2O)n.
Compare molecular formula, structural formula.

Origin of empirical formula

First recorded in 1820–30

Words nearby empirical formula

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Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for empirical formula

empirical formula

noun

a chemical formula indicating the proportion of each element present in a moleculeC 6 H 12 O 6 is the molecular formula of sucrose whereas CH 2 O is its empirical formula Compare molecular formula, structural formula
a formula or expression obtained from experimental data rather than theory
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for empirical formula

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.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for empirical formula

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. The empirical formula of a compound may be simpler than its molecular formula, which is a multiple of the empirical formula. For example, glucose has the molecular formula C6H12O6 but the empirical formula CH2O. Compare molecular formula structural formula.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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