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Thus, for example, the average mass of a molecule of water is about 18.0153 daltons, and the molar mass of water is about 18.0153 g/mol. For chemical elements without isolated molecules, such as carbon and metals, the molar mass is computed dividing by the number of moles of atoms instead.
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 ...
The mole is widely used in chemistry as a convenient way to express amounts of reactants and amounts of products of chemical reactions. For example, the chemical equation 2 H 2 + O 2 → 2 H 2 O can be interpreted to mean that for each 2 mol molecular hydrogen (H 2) and 1 mol molecular oxygen (O 2) that react, 2 mol of water (H 2 O) form.
Molar mass: 44.009 g·mol −1 ... This chemical reaction produces carbonic acid ... As an example, the chemical reaction between methane and oxygen:
Molar mass: 17.031 g·mol −1 Appearance ... Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the formula N H 3. ... For example, lithium ...
Molar mass: 32.042 g·mol −1 ... is an organic chemical compound and the simplest aliphatic ... Examples include Shilov systems and Fe- and Cu-containing ...
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.
Molar mass: 42.081 g·mol −1 Appearance Colorless gas ... Propylene, also known as propene, is an unsaturated organic compound with the chemical formula CH 3 CH=CH 2.