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Published by Butterworth-Heinemann 2nd edition. National Center for Biotechnology Information, U.S. Atomic weights of the elements 2018 (IUPAC Technical Report). National Institute of Standards and Technology, U.S. Los Alamos National Laboratory, LLC for the U.S. n/a indicates, that the melting or boiling temperature points, ionization energy, or density values are not available.
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( ) shows the Ionization Energy theoretical value see for an explanation and values.Cobalt reacts over time with dilute acids and has remarkable magnetic properties. It is a hard, ductile, lustrous bluish-grey metal and its surfaces are stable in air. The origin of the name comes from the German word kobald meaning goblin or evil spirit. indicates, that the Ionization Energy value is derived from known experimental values, or by semiempirical calculation, with absolute accuracy reflected in the number of significant figures see for an explanation and values. Relative atomic mass: 58.933 194 (4) Cobalt was discovered by Georg Brandt (DE) in 1739.( ) indicates decisional uncertainty given in parentheses, and following the last significant digit to which it is attributed see for an explanation and values. Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in CO: Molar Mass (g/mol) C (Carbon) 1 × 12.0107 12.0107.* indicates the IUPAC conventional atomic weights standard atomic weights for these elements are expressed in intervals see for an explanation and values.indicates the atomic weight of the longest-lived isotope.CO 2 has one carbon atom and two oxygen atoms.Oxygen (O) has an atomic mass of about 16.00 amu.Carbon (C) has an atomic mass of about 12.01 amu.Let's calculate the molar mass of carbon dioxide (CO 2): Add them together: add the results from step 3 to get the total molar mass of the compound.Calculate molar mass of each element: multiply the atomic mass of each element by the number of atoms of that element in the compound.The atomic mass is usually found on the periodic table and is given in atomic mass units (amu). Find atomic masses: look up the atomic masses of each element present in the compound.It is used in many places today, such as, magnets materials, paint pigments, glasses, and even cancer therapy. Cobalt was first discovered in 1735 by George Brandt in Stockholm Sweden. The atomic number of Cobalt is 27 with an atomic mass of 58.933195. For example, water is H 2O, meaning it contains two hydrogen atoms and one oxygen atom. Cobalt (Co) lies with the transition metals on the periodic table. Identify the compound: write down the chemical formula of the compound.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. Enter a chemical formula to calculate its molar mass (e.g.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. Carbon monoxide is a colorless and odorless gas.Ĭomputing molar mass (molar weight)To calculate molar mass of a chemical compound enter its formula and click 'Compute'.