Mole (Chemistry) (TerminologyTerms and phrases (EvaluationJeannin, YvesMills, Ian MInternationalunionofpureandappliedchemistryJeannin Y 2010 A fixed Avogadro constant or a fixed carbon-12 molar mass: which one to choose? Chem. Int. 32 (January-February) 8-10...
The molar mass of a substance is the mass of one mole of that substance. What is the unit of molar mass? A. g/mol B. mol/g C. L/mol D. mol/L 相关知识点: 试题来源: 解析 A。本题考查摩尔质量的单位。摩尔质量是指单位物质的量的物质所具有的质量,单位是克每摩尔(g/mol)。选项 B ...
37. What happens when one mole of ethane is mixed in the dark at room temperature with six moles of chlorine gas?A A. There is no reaction. B. Only$$ C _ { 2 } C _ { 4 } $$is are formed. C. $$ C _ { 2 } C l _ { 5 } $$ and HCl are formed. D.$$ C H _ ...
An atom has a mass number of 24 and 13 neutrons. what is the atomic number of this atom? What is the mass number of an element equal to? How many valence electrons does iodine have? What is the mass number of an electron? What is the mass number of an atom with 5 protons and 7...
To determine the number of moles of H2(g) required to saturate one mole of benzene, we can follow these steps: 1. Understanding Benzene Structure: Benzene (C6H6) is an aromatic hydrocarbon with a ring structure that contains alternating double bonds. This structure makes benzene an unsaturated...
The amount of a solute in a chemical solution is measured in moles. One mole of salt, also known as sodium chloride, has a mass of about 58.5 g. If 58.5 g or one mole of salt were dissolved in one kilogram of water, the resulting solution would have a molality of 1 m. Further, ...
For the mole fraction of water in the KCl solution, it is equal to the moles of water over the sum of the moles of water and moles of KCl solution. The given concentration is expressed in molality which suggests that 1 kilogram of solvent (which is water) is used to prepare ...
defined as follows: "The mole, unit of amount of substance of a specified elementary entity, which may be an atom, molecule, ion, electron, any other particle or a specified group of such particles, is such that the Avogadro constant is equal to exactly 6.022 141 79 x 1023 per mole. ...
A fixed Avogadro constant leads to a definition of the mole without reference to any other unit. The mole becomes independent of any other unit so that it gets its status of base unit. If M(12C) is kept equal to 12 g/mol exactly as it is today, the mole definition implies another un...
Today, a mole isAvogadro's numberof particles, which is exactly 6.02214076×1023. For all practical purposes, the mass of one mole of a compound in grams is approximately equal to the mass of one molecule of the compound in daltons. ...