One mole contains exactly 6.022 ×10 23 particles (Avogadro's number) Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules.Molar mass ( molar weight) is the mass of one mole of a substance and is expressed in g/mol.(1 u is equal to 1/12 the mass of one atom of carbon-12) Molecular mass ( molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u).To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.Įxamples of molecular weight computations: Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.Ĭomputing molecular weight (molecular mass) Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Tos, Bz, TMS, tBu, Bzl, Bn, DmgĮxamples of molar mass computations: NaCl, Ca(OH)2, K4, CuSO4*5H2O, nitric acid, potassium permanganate, ethanol, fructose, caffeine, water.Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al. As with Chemistry, the text of Wikipedia is available under the GNU Free Documentation License.Computing molar mass (molar weight)To calculate molar mass of a chemical compound enter its formula and click 'Compute'. The list of authors can be seen in the page history. The original article was at List of elements by atomic mass. Series: Alkalis - Alkaline earths - Lanthanides - Actinides - Transition metals - Poor metals - Metalloids - Nonmetals - Halogens - Noble gasesīlocks: s-block - p-block - d-block - f-block - g-block Name | Atomic symbol | Atomic number | Boiling point | Melting point | Density | Atomic mass Standard table | Vertical table | Table with names | Names and atomic masses (large) | Names and atomic masses (small) | Names and atomic masses (text only) | Inline F-block | Elements to 218 | Electron configurations | Metals and nonmetals | Table by blocks | Alternatives Atomic weights of elements with atomic numbers 110-116 taken from this source. IUPAC Standard Atomic Weights Revised (2005).Atomic weights of elements with atomic numbers from 1-109 taken from this source. Atomic Weights of the Elements 2001, Pure Appl.Note 5: The atomic weight of commercial Lithium can vary between 6.939 and 6.996-analysis of the specific material is necessary to find a more accurate value.Note 4: The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given. Note 3: The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.Note 2: The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table. However, three elements, Thorium, Protactinium, and Uranium, have a characteristic terrestrial isotopic composition, and thus their atomic mass given. , indicates the mass number of the longest-lived isotope of the element.
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