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Why is a mole a mole?
Atoms are the building blocks of matter, and atoms can be connected to make molecules. Because atoms, molecules, and other particles are all extremely small, you need a lot to even weigh them, so that’s why chemists use the word “mole.”
Where does the name mole come from chemistry?
The name mole is an 1897 translation of the German unit Mol, coined by the chemist Wilhelm Ostwald in 1894 from the German word Molekül (molecule). The related concept of equivalent mass had been in use at least a century earlier.
How do you explain moles in chemistry?
The mole (abbreviated mol) is the SI measure of quantity of a “chemical entity,” such as atoms, electrons, or protons. It is defined as the amount of a substance that contains as many particles as there are atoms in 12 grams of pure carbon-12. So, 1 mol contains 6.022×1023 elementary entities of the substance.
Who created the term mole?
Wilhelm Ostwald (1853-1932) introduced the “Mol” (mole in German), probably in 1893 . However, he used this term to mean “molecular weight in gram”: “We generally call one mole the weight in grams that is numerically identical with the molecular weight of a given substance” (translated sentence on page 119, ref.
Why is the mole so important in chemistry?
Why is the mole unit so important? It represents the link between the microscopic and the macroscopic, especially in terms of mass. A mole of a substance has the same mass in grams as one unit (atom or molecules) has in atomic mass units.
Why is mole important in chemistry?
Why is mole important in terms of studying chemistry?
The mole is important because it allows chemists to work with the subatomic world with macro world units and amounts. Atoms, molecules and formula units are very small and very difficult to work with usually. A mole of something represents 6.022×1023 items. Whether it be atom, molecule or formula unit.
Which best describes a mole as used in chemistry?
Verified answer. A mole in chemistry is defined as the number or quantity of a chemical substance that consists of as many fundamental entities such as atoms, molecules, and ions. Therefore, the statement that best describes a mole is that, it is used for directly comparing the amounts of substances.
Why is the mole so useful in chemistry?
The mole is useful in chemistry because it is defined such that the mass of Avogadro ‘s number of particles (atoms or molecules) of a substance (the molar mass) is equal to the sum of the numerical values of the atomic masses of its constituent elements.
Is a mole the same thing as a molecule in chemistry?
A gram-mole is the same thing as a mole, the common term you probably learned about in chemistry class. On rare occasions, engineers decide to define moles differently, thus the term just means “the normal kind of mole, which I feel I need to specify for some reason.”.
How much is a mole in chemistry?
A mole in chemistry is a SI unit of measurement. The mole unit describes the amount or number of things. The standard mole is defined as the number of atoms in 12 grams of the carbon isotope, carbon-12. 1 mole = 6.02214129(27) x 1023. More commonly, 1 mole (abbreviated mol) is equal to 6.022 x 1023.