2007-02-11 22:59:21 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
1 mole is equal to Avogadro Number which is 6.023*10^23 number of particles.
1 mole of an element or compound is equal to M number of grms of the element or compound, where M is the respective atomic or molecular mass.
2007-02-11 23:57:12 · answer #1 · answered by krissh 3 · 1⤊ 0⤋
A mole is 6.022 X10^23 molecules of a element or compound.
For practical measurement of a mole you will need 1 times the gram atomic weight of a element or compound to have a mole.
I know that statement is not terribly clear but lets take an O2 molecule. We know the atomic weight if oxygen is 16, therefore O2 has an atomic weight of 32, which means one mole of O2 would weight exactly 32 grams.
2007-02-12 08:15:26 · answer #2 · answered by Brian K² 6 · 0⤊ 0⤋
mole is the SI unit for measuring the amount of a substance. 1 mole is equal to avogadro's number
= 6.022Ã10^23
2007-02-12 07:20:38 · answer #3 · answered by sassy chick 1 · 0⤊ 0⤋
A mole is a quantity of something. You know how a dozen is 12 items? A mole is 6.022 x 10^23 items. Obviously a much, much bigger number, but it helps us keep track of smaller particles like atoms.
It's also called Avogadro's Number.
This site (1) has good info on moles, as well as examples.
2007-02-12 07:08:50 · answer #4 · answered by Ultima vyse 6 · 1⤊ 0⤋
.the molecular weight of an item from the "table of periodic"
molecules
element wt.. X 10^23 = mole of that element.
OK so I missed the 6.022 part of the equation.
(element wt.. X (6.022 X 10^23)) = mole of that element.
2007-02-12 07:08:58 · answer #5 · answered by xboomiex 1 · 0⤊ 1⤋
The atomic weight of an element times (6.022 times 10 to the 29th power).....that's how many atoms you need to make 1 mole.
Moles are used to mix elements together to make molecules....
Like with water....H2O....you need 2 moles of hydrogen and one mole of oxygen to make it.
How heavy is these elements? (laughs) Well you need 2 grams of hydrogen....8 grams of Oxygen....
So.....you have to super-chill both elements to a liquid, then measure them....(unless of course, you want to measure it at sea-level on a summery day---just too many variations there)
2007-02-12 07:15:46 · answer #6 · answered by reggieman 6 · 0⤊ 1⤋
The amount of a given substance, e.g. molecule.
H2O= 1 mole of water
2H2O = 2 moles of water. It's quite easy :)
2007-02-12 07:05:00 · answer #7 · answered by lottie 2 · 0⤊ 3⤋
a mole is a mammal that digs tunnels and lives underground...
-a vehicle in Thunderbirds that tunnels throught the earth,
-a spy who works against his own government for another country,
- a unit of measurement that measures the amount of substance in molecular structures
- a freckle-like spot on the skin which can develop into a melanoma when exposed to excessive ultraviolet rays
2007-02-12 07:06:31 · answer #8 · answered by Anonymous · 0⤊ 3⤋