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Molar heat capacity (N 2) ... Nitrogen is the most common pure element in the earth, making up 78.1% of the volume of the atmosphere [9] (75.5% by mass), ...
ISO TR 29922-2017 provides a definition for standard dry air which specifies an air molar mass of 28,965 46 ± 0,000 17 kg·kmol-1. [2] GPA 2145:2009 is published by the Gas Processors Association. It provides a molar mass for air of 28.9625 g/mol, and provides a composition for standard dry air as a footnote. [3]
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.
The molecular formula C 10 H 14 N 2 (molar mass: 162.23 g/mol, exact mass: 162.1157 u) may refer to: Anabasine; Nicotine; Phenylpiperazine; Rivanicline
C 4 H 12 N 2: Molar mass: 88.154 g·mol −1 Appearance Colorless liquid Density: 0.819 g/mL Boiling point: 120 °C (248 °F; 393 K)
vapour density = mass of n molecules of gas / mass of n molecules of hydrogen gas . vapour density = molar mass of gas / molar mass of H 2 vapour density = molar mass of gas / 2.01568 vapour density = 1 ⁄ 2 × molar mass (and thus: molar mass = ~2 × vapour density) For example, vapour density of mixture of NO 2 and N 2 O 4 is 38.3. Vapour ...
Ca 3 N 2: Molar mass: 148.248 g·mol −1 Appearance red-brown crystalline solid Density: 2.670 g/cm 3 ... Ca 3 N 2 + 2 H 2 → 2 CaNH + CaH 2. General references