...The mole is defined as the amount of substance of a system that contains as many "elementary entities" (e.g. atoms, molecules, ions, electrons) as there are atoms in 12 g of carbon-12 (12C). A mole has . atoms or molecules of the pure substance being measured. A mole will possess mass exactly equal to the substance's molecular/atomic weight in grams. Because of this, one can measure the number of moles in a pure substance by weighing it and comparing the result to its molecular/atomic weight. Read full entry
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- 1.Mole (unit) - Wikipedia, the free encyclopedia
- This article is about the SI unit. For other uses, see Mole (disambiguation) ... 3 Other units called "mole" 4 Proposed future definition. 4.1 Kilogram. 5 ...
- http://en.wikipedia.org/wiki/M
ole_(unit)
- 2.Mole (unit) - Simple English Wikipedia, the free encyclopedia
- Mole (unit) From Wikipedia, the free encyclopedia. Jump to: navigation, search ... Mole is the SI unit of measurement used to measure the number of things, usually ...
- http://simple.wikipedia.org/wi
ki/Mole_(unit)
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An Analogy for the mole unit We're studying the mole in our
chemistry class and I need to
think of an analogy to explain
it. For example a grain of
sugar vs. a sugar cube. Any
sugestions?
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a mole is like...a bundle...a dozen 1 mol = 6.022 X 10^23 atoms u see what i mean? like 1 dozen = 12 bananas anyways in the periodic table, each mass is for 1 mol of that element i.e 1 mol O = 16 g 1 mol C = 12 g there are still the same number of atoms, but they have different densities and size, thus different mass let me know if there is anymore confusion. |
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5 important facts of the mole I need 5 important facts about
the measurement unit - the
mole. I need to write a
paragraph on it for school.
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1) a mole is a label for a quantity. analagous to "dozen" and "pair" 2) 1 mole = 6.022x10^23 of anything 3) the coefficients of a balanced equation can be thought of in terms of mole ratios 4) the quantities we work with in labs is in the order of 1 or so moles of molecules.. example 1 mole table salt is about 58 g...a tablespoon or so 5) this is a bit longer... atomic mass on a periodic table is in amu / atom.. but since 1 amu = 1.66x10^-24 g...and since 1 mole = 6.022x10^23 atoms... 1 amu / 1 atom x (1.66x10^-24 g / amu) x (6.022x10^23 atoms / mole) = 1 g / mole ie... 1 amu / 1 atom = 1 g / 1 mole atoms... |
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Why would we want to use a |
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"The unit Mole comes from the word molecule, to be specific, the German word Molekül. first coined by Wilhelm Ostald of Germany in 1902. A mole is the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12. A mole of carbon atoms is 6.02x1023 carbon atoms. It's a lot easier to write the word 'mole' than to write '6.02x1023' anytime you want to refer to a large number of things! Basically, that's why this particular unit was invented." |
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