I know it is 6.022 x 10 to the 23rd particles, but what the hell does that really mean?
2006-09-13 16:39:29 · 2 answers · asked by kaos4792005 2 in Science & Mathematics ➔ Chemistry
A mole is the amount of pure substance containing the same number of chemical units as there are atoms in exactly 12 grams of carbon-12 (i.e., 6.023 X 1023). This involves the acceptance of two dictates -- the scale of atomic masses and the magnitude of the gram. Both have been established by international agreement. Formerly, the connotation of "mole" was "gram molecular weight." Current usage tends to apply the term "mole" to an amount containing Avogadro's number of whatever units are being considered. Thus, it is possible to have a mole of atoms, ions, radicals, electrons, or quanta. This usage makes unnecessary such terms as "gram-atom," "gram-formula weight," etc.
All stoichiometry essentially is based on the evaluation of the number of moles of substance. The most common involves the measurement of mass. Thus 25.000 grams of water will contain 25.000/18.015 moles of water, 25.000 grams of sodium will contain 25.000/22.990 moles of sodium.
The convenient measurements on gases are pressure, volume, and temperature. Use of the ideal gas law constant R allows direct calculation of the number of moles: n=P V/R T. T is the absolute temperature, R must be chosen in units appropriate for P, V, and T. The acceptance of Avogadro's law is inherent in this calculation; so too are approximations of the ideal gas.
2006-09-13 16:41:11 · answer #1 · answered by shih rips 6 · 1⤊ 0⤋
It mean you have 6.022 x 10 to the power of 23 molecules.
That mean 6.022 x 10 x10 x10.... twenty three 10's in total. Its a very huge number, its used as a relative comarison between substance. So 1 mole of a substance could weight more that 1 mole of a different chemical substance.
2006-09-13 16:41:09 · answer #2 · answered by Hard Rocker 3 · 0⤊ 0⤋
In terms of scientific measurement, the mole refers to how much of a substance you have. This scale is based upon the masses of atoms in a compound.The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12; its symbol is "mol."
When the mole is used, the elementary entities must be specified and may be atoms, molecues, ions, electrons, other particles, or specified groups of such particles.
2006-09-13 16:42:36 · answer #3 · answered by wildleopard1212 2 · 0⤊ 0⤋
Remove Your Moles, Warts & Skin Tags in 3 Days
Easily, Naturally And Without Surgery
2016-05-16 02:55:55 · answer #4 · answered by Victoria 4 · 0⤊ 0⤋
A mole (or gram-equivalent) is the mass in grams of a substance that equals the substances atomic weight. So, for example, oxygen (atomic weight of almost 16) with two hydrogens (atomic weight 1 each) is a molecule of water and 16 grams of water is one mole of water containing 6.022*10^23 molecules.
Doug
2006-09-13 16:47:27 · answer #5 · answered by doug_donaghue 7 · 0⤊ 0⤋
it means 6.022 X 10^23 things of something.
2006-09-13 16:46:49 · answer #6 · answered by BeC 4 · 0⤊ 0⤋
it's a unit of measurement... think of pounds and ounces... but as it would be relevant to molecules.
2006-09-13 16:41:18 · answer #7 · answered by Angie B 3 · 0⤊ 0⤋
pound
2006-09-13 16:40:34 · answer #8 · answered by don;t know 3 · 0⤊ 2⤋