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The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, M u ≈ 1.000 000 × 10 −3 kg/mol ≈ 1 g/mol. For normal samples from Earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight [ 2 ] or the conventional atomic weight.
The molar mass of a substance depends not only on its molecular formula, but also on the distribution of isotopes of each chemical element present in it. For example, the molar mass of calcium-40 is 39.962 590 98 (22) g/mol, whereas the molar mass of calcium-42 is 41.958 618 01 (27) g/mol, and of calcium with the normal isotopic mix is 40.078(4 ...
0.17308 g/cm 3 (from 23.1256 cm 3 /mole; at local min. density, from hcp melt at 0.699 K, 24.993 atm) 0.17443 g/cm 3 (from 22.947 cm 3 /mole; He-II at triple point hcp−bcc−He-II: 1.463 K, 26.036 atm) 0.1807 g/cm 3 (from 22.150 cm 3 /mole; He-I at triple point hcp−bcc−He-I: 1.772 K, 30.016 atm) 3 Li lithium; use: 0.512 g/cm 3: CR2 (at m ...
For example, 50 g of zinc will react with oxygen to produce 62.24 g of zinc oxide, implying that the zinc has reacted with 12.24 g of oxygen (from the Law of conservation of mass): the equivalent weight of zinc is the mass which will react with eight grams of oxygen, hence 50 g × 8 g/12.24 g = 32.7 g.
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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 of glass component, g/mol Batch component Formula of batch component Molar mass of batch component, g/mol SiO 2: 67 60.0843 Sand SiO 2: 60.0843 Na 2 O 12 61.9789 Trona: Na 3 H(CO 3) 2 *2H 2 O 226.0262 CaO 10 56.0774 Lime CaCO 3: 100.0872 Al 2 O 3: 5 101.9613 Albite: Na 2 O*Al 2 O 3 *6SiO 2: 524.4460 K 2 O 1 94.1960 Orthoclase: K 2 O ...
A variety of other chromium(III) sulfates are known, but also contain hydroxide or oxide ligands. Most important commercially is basic chromium sulfate, which is thought to be [Cr 2 (H 2 O) 6 (OH) 4]SO 4 (CAS#39380-78-4). [2] It results from the partial neutralization of the hexahydrates. Other chromium(III) hydroxides have been reported. [3]