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Manganese(II) chloride is the dichloride salt of manganese, MnCl 2.This inorganic chemical exists in the anhydrous form, as well as the dihydrate (MnCl 2 ·2H 2 O) and tetrahydrate (MnCl 2 ·4H 2 O), with the tetrahydrate being the most common form.
Note that the especially high molar values, as for paraffin, gasoline, water and ammonia, result from calculating specific heats in terms of moles of molecules. If specific heat is expressed per mole of atoms for these substances, none of the constant-volume values exceed, to any large extent, the theoretical Dulong–Petit limit of 25 J⋅mol ...
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.
molar mass of carbon-12: 12.000 000 0126 (37) × 10 −3 kg⋅mol −1: 3.1 × 10 −10 [53] = / atomic mass constant: 1.660 539 068 92 (52) × 10 −27 kg: 3.1 × 10 −10 [54] = / molar mass constant: 1.000 000 001 05 (31) × 10 −3 kg⋅mol −1: 3.1 × 10 −10 [55]
Specific volume for an ideal gas is related to the molar gas constant (R) ... M is the molar mass of the mixture. ... Ice: 916.7: 0.00109 Water (liquid) 1000:
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The molar heat capacity generally increases with the molar mass, often varies with temperature and pressure, and is different for each state of matter. For example, at atmospheric pressure, the (isobaric) molar heat capacity of water just above the melting point is about 76 J⋅K −1 ⋅mol −1 , but that of ice just below that point is about ...