I need help, what exactly is a MOLE in Chemistry?

[zexen_lowe]

Aj_habfan said:

zexen_lowe said:

leo-j said:
This is complicated beyond relief, what exactly is a mole

@AJ

What did you do to find that answer?

I'll try to make it simpler. It's just a way to express quantity. A dozen is 12 units of something, a gross is 144 units of something, then a mole is 6.02x10e23 units of something (That's a 6 followed by 23 zeroes)

 

Avogardro's number is rarely used though, it's irrelevant to most questions.

 

I used it all the time. I had it permanentely stored in my calc's memory, my professors asked me to make a lot of calculations with it. Still, that's what a mole is, even if it's not practical. A practical definition would be that it's the number you have to have of atoms or molecules so the weight of them is equal to the number in grams that correspond to each element in the periodic table.

Still, the mole number it's like the Regnault constant a.k.a the gas constant (you'll see it in some years). It doesn't matter what it is, the important thing is that it works in every equation