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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.
Given a total mass of the atmosphere of 5.15 × 10 18 kilograms (1.135 × 10 19 lb), the atmosphere contains on the order of 2.03 gigatonnes (2.00 × 10 9 long tons; 2.24 × 10 9 short tons) of xenon in total when taking the average molar mass of the atmosphere as 28.96 g/mol which is equivalent to some 394-mass ppb.
The molar mass is defined as the mass of a given substance divided by the amount of the substance, and is expressed in grams per mol (g/mol). That makes the molar mass an average of many particles or molecules (potentially containing different isotopes), and the molecular mass the mass of one specific particle or molecule. The molar mass is ...
N,N′-Dicyclohexylcarbodiimide (DCC or DCCD) [1] is an organic compound with the chemical formula (C 6 H 11 N) 2 C. It is a waxy white solid with a sweet odor. Its primary use is to couple amino acids during artificial peptide synthesis.
The term molality is formed in analogy to molarity which is the molar concentration of a solution. The earliest known use of the intensive property molality and of its adjectival unit, the now-deprecated molal, appears to have been published by G. N. Lewis and M. Randall in the 1923 publication of Thermodynamics and the Free Energies of Chemical Substances. [3]
Nitrous oxide (dinitrogen oxide or dinitrogen monoxide), commonly known as laughing gas, nitrous, or factitious air, among others, [4] is a chemical compound, an oxide of nitrogen with the formula N
Iodine monochloride is produced simply by combining the halogens in a 1:1 molar ratio, according to the equation I 2 + Cl 2 → 2 ICl. When chlorine gas is passed through iodine crystals, one observes the brown vapor of iodine monochloride.
2,4-Dinitroanisole crystallises in the monoclinic form. The unit cell has these sizes and angles: a=8.772 Å b=12.645 Å c=15.429 Å 81.89°, cell volume is V=1694 Å 3, There are eight molecules in each unit cell, with four positions symmetric.