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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. [1] The molar mass is a bulk, not molecular, property of a substance.
The molar mass constant, usually denoted by M u, is a physical constant defined as one twelfth of the molar mass of carbon-12: M u = M(12 C)/12. [1] The molar mass of an element or compound is its relative atomic mass (atomic weight) or relative molecular mass (molecular weight or formula weight) multiplied by the molar mass constant.
The molecular mass and relative molecular mass are distinct from but related to the molar mass. The molar mass is defined as the mass of a given substance divided by the amount of the substance, and is expressed in grams per mol (g/mol). That makes the molar mass an average of many particles or molecules (potentially containing different ...
Molar mass: 18.01528(33) g/mol Appearance ... Water is an inorganic compound with the chemical formula H 2 O. It is a transparent, tasteless, odorless, [c] ...
Molar volume is related to specific volume by the product with molar mass. ... where N A is the Avogadro constant and Z is the number of formula units in the unit ...
The mole fraction can be calculated using the formula = ¯, where is the molar ... where is the molar mass of the component , and ¯ is the ...
When expressed in percent, it is known as the mole percent or molar percentage (unit symbol %, sometimes "mol%", equivalent to cmol/mol for 10-2). The mole fraction is called amount fraction by the International Union of Pure and Applied Chemistry (IUPAC) [ 1 ] and amount-of-substance fraction by the U.S. National Institute of Standards and ...
Molar mass: 216.591 g·mol −1 Appearance Yellow or red solid ... is the inorganic compound with the formula Hg O. It has a red or orange color. Mercury(II) oxide is ...