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  1. Molecular mass - Wikipedia

    • In molecular biology, the mass of macromolecules is referred to as their molecular weight and is expressed in kDa, although the numerical value is often approximate and representative of an average. 展开

    Overview

    The molecular mass (m) is the mass of a given molecule. Units of daltons (Da) are often used. Different molecules of the s… 展开

    Calculation

    Molecular masses are calculated from the atomic masses of each nuclide present in the molecule, while molar masses and relative molecular masses (molecular weights) are calculated from the standard atomic weights of each … 展开

    Determination

    In mass spectrometry, the molecular mass of a small molecule is usually reported as the monoisotopic mass: that is, the mass of the molecule containing only the most common isotope of each element. This also differs subtly fro… 展开

     
  1. Molar mass

    In chemistry, the molar mass (M) (sometimes called molecular weight or formula weight, but see related quantities for usage) of a chemical compound is defined as the ratio between the mass and the amount of substance (measured in moles) of any sample of the compound.
    en.wikipedia.org/wiki/Molar_mass
    en.wikipedia.org/wiki/Molar_mass
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  7. What Is Molecular Weight? Chemistry Definition

    2019年7月3日 · Molecular weight is a measure of the sum of the atomic weight values of the atoms in a molecule. Molecular weight is used in chemistry to determine stoichiometry in chemical reactions and equations.

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