Molecular mass or molar mass are used in stoichiometry calculations in chemistry. Hover over a result for more information.

The molecular mass calculator will recognize the entered formula's, which are included in the list of organic compounds. Searches all entries on many criteria: Title, Author, Entity, Organism, Database code, etc. Calculations are based on the exact mass of the most abundant ion of the element. Hover over a result for more information. For question or remarks please contact us. [ Calculators ] [ Converters ] [ Periodic Table ], Pressure Conversion Program and ideal gas law, Hardness Converter and Hardness Calculator, Design Characteristics for a Municipal Wastewater Treatment Plant Calculation, evaporation of water (lake en pan evaporation), Distributieweg 3 2645 EG Delfgauw The Netherlands Phone: +31 152 610 900 fax: +31 152 616 289 e-mail: info@lenntech.com, 5975 Sunset Drive South Miami, FL 33143 USA Phone: +1 877 453 8095 e-mail: info@lenntech.com, Level 5 - OFFICE #8-One JLT Tower Jumeirah Lake Towers Dubai - U.A.E. Examples: C6H12O6, PO4H2(CH2)12CH3

First, determine the fractional percent of each isotope in the substance. C2HCl3O.H2O ). This is a very primitive exact mass calculator.

Using the above calculator you could find that e.g.

The Exact Mass Calculator will provide the user with the exact mass of a chemical formula that is typed into the form below. Type in the chemical formula. How to calculate average atomic mass. Or you can choose by one of the next two option-lists, which contains a series of common organic compounds (including their chemical formula) and all the elements. Peptides, Nucleic Acids, and other Biomolecules. The calculator handles at most two different bracket levels. a pollution of 1 gram of benzene in a certain amount of water converts to NA/78.11≈ 7.7098 × 1021 molecules polluting that water! Enter the molecular formula of the molecule. Make sure you enter the molecule of crystallization at last (e.g. Examples: C6H12O6, PO4H2(CH2)12CH3, A Repository for Data from NMR Spectroscopy on Proteins, Searches all entries on many criteria: Title, Author, Entity, Organism, Database code, etc. 1 with 75.77 percent of atoms and 1 with 24.23 percent of atoms. Given the formula of a chemical species, the calculator determines the exact mass of a single isotope of that species and the relative abundance of that isotope. The isotope selected has the property that each atom in the species is … This Calculator has been tested on Internet Explorer version 6 only, Firefox might not show all fields correctly. In related terms, another unit of mass often used is Dalton (Da) or unified atomic mass unit (u) when describing atomic masses and molecular masses.

Enter the molecular formula of the molecule. Lenntech BV cannot be held responsible for errors in the calculation,  the program itself or the explanation. !!! This web application calculates the molecular mass (average, monoisotopic, and nominal), the elemental composition, and the mass distribution spectrum of a molecule given by its chemical formula, relative element weights, or sequence. Copyright © The Board of Regents of the University of Wisconsin System. Lenntech BV cannot be held responsible for errors in the calculation, Plant Inspection & Process Optimalisation, Separation and Concentration Purification Request. Calculations are based on the isotopic composition of the elements. Also, important in this field is Avogadro's number (NA) or Avogadro's constant (6.0221 x 1023). It does not report other isotopes and does not use the average masses of the elements. Phone: +971 4 429 5853 e-mail: info@lenntech.com, Copyright © 1998-2020 Lenntech B.V. All rights reserved. Restraints with atomic coordinates and chemical shifts, Protein Structure Validation Suite (PSVS), Published studies utilizing the BMRB database, Atom Label Assignment Tool using InChI String (ALATIS) Server. For example, chlorine has two major isotopes. It is defined to be 1/12 of the mass of one atom of carbon-12 and in older works is also abbreviated as "amu". Or 1 mole of a substance will contain Avogadro's number of that substance. This online calculator you can use for computing the average molecular weight (MW) of molecules by entering the chemical formulas (for example C3H4OH(COOH)3 ).     Instant entry access: The term "mole" is defined in that one mole of a substance with a molecular (or atomic) mass of one (1), will have a mass of 1 gram.



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