The molecular mass (m) is the mass of a given molecule. The unit dalton (Da) is often used. Different molecules of the same compound may have different...

chemistry, the molar mass (or molecular weight or formula weight) (M) of a chemical compound is defined as the ratio between the mass and the amount of substance...

atoms in a molecule is the relative molecular mass. The atomic mass of an isotope and the relative isotopic mass refers to a certain specific isotope...

In polymer chemistry, the molar mass distribution (or molecular weight distribution) describes the relationship between the number of moles of each polymer...

12C, which made the mass of a mole of a compound expressed in grams, numerically equal to the average molecular mass or formula mass of the compound expressed...

which the mass spectrum is displayed. The dalton (symbol: Da) is the standard unit that is used for indicating mass on an atomic or molecular scale (atomic...

Monoisotopic mass (Mmi) is one of several types of molecular masses used in mass spectrometry. The theoretical monoisotopic mass of a molecule is computed...

mass in a homologous series. In the spectrum for toluene for example, the molecular ion peak is located at 92 m/z corresponding to its molecular mass...

CH. The molecular mass can be calculated from the chemical formula and is expressed in conventional atomic mass units equal to 1/12 of the mass of a neutral...

and H2 mass is thought to be constant, although there are reasons to doubt this assumption in observations of some other galaxies. Within molecular clouds...

average mass of one of its particles in daltons. That is, the molar mass of a chemical compound is meant to be numerically equal to its average molecular mass...

used to determine molecular mass, molecular structure, morphology, thermal properties, and mechanical properties. The molecular mass of a polymer differs...

intact molecular masses with little fragmentation. A mass spectrum can represent many different types of information based on the type of mass spectrometer...

= Mw/Mn where Mw is the mass-average molar mass (or molecular weight) and Mn is the number-average molar mass (or molecular weight). Pure Appl. Chem...

determining the molecular mass of a protein, the SDS-PAGE is a bit more exact than an analytical ultracentrifugation, but less exact than a mass spectrometry...

indicate mass is the flowing quantity. Mass flux can also refer to an alternate form of flux in Fick's law that includes the molecular mass, or in Darcy's...

composed of macromolecules. A macromolecule is a molecule of high relative molecular mass, the structure of which essentially comprises the multiple repetition...

atomic mass (atomic weight) or relative molecular mass (molecular weight) multiplied by the molar mass constant. The mole and the atomic mass unit (dalton)...

high-modulus polyethylene (HMPE), it has extremely long chains, with a molecular mass usually between 3.5 and 7.5 million amu. The longer chain serves to...

content. The glutenins are protein aggregates of high-molecular-mass (HMW) and low-molecular-mass (LMW) subunits with molar masses from about 200,000 to...

loss in molecular weight when the two molecules are combined. Glucose (dextrose) has a molecular mass of 180, while water has a molecular mass of 18. For...

equivalent weight of a compound can also be calculated by dividing the molecular mass by the number of positive or negative electrical charges that result...

Mole (mol) and Mass(kg) relationship: A mole of a substance has a mass that is its molecular mass expressed in units of grams; the mass of a mole of carbon...

fragments of low mass-to-charge ratio (m/z) and few, if any, molecules approaching the molecular mass unit. Hard ionization is considered by mass spectrometrists...

Molecular gastronomy is the scientific approach of cuisine from primarily the perspective of chemistry. The composition (molecular structure), properties...

Low molecular-mass organic gelators (LMOGs) are the monomeric sub-unit which form self-assembled fibrillar networks (SAFINs) that entrap solvent between...

layer. It is defined as: S c = ν D = μ ρ D = viscous diffusion rate molecular (mass) diffusion rate {\displaystyle \mathrm {Sc} ={\frac {\nu }{D}}={\frac...

longer, continuous, unbranched peptide chain. Polypeptides that have a molecular mass of 10,000 Da or more are called proteins. Chains of fewer than twenty...

travels longitudinally at different speeds, mostly depending on the molecular mass and temperature of the gas, and pressure has little effect. Since air...

A molecular vibration is a periodic motion of the atoms of a molecule relative to each other, such that the center of mass of the molecule remains unchanged...