How do you get a chemistry mole?

Answer 1

One mole of something is 6.02 x 1023 (602,000,000,000,000,000,000,000) molicules (or atoms, if appropriate) of that substance. A gram molecular weight of anything will have one mole of molecules in it. Find out what substance you need a mole of, then find it's gram molecular weight. Take that much of the material (the gram molecular weight) and you've got your mole of that stuff.

Answer 2

The mole in chemistry is also called the chemist's dozen and is defined as the amount of material containing 6.0221421 X10^23 particles(This number is called Avogadro's number)

The value of mole is the number of particles in excactly 12 grams of c-12, so, if you have 12grams of c-12 , you will have 6.022x10^23 carbon atoms ,which is also a mol of C. For any other element a mol of that element is the Atomic Mass expressed as grams.

0.0265 g C find mol of C

plan

gC -> mol C

1 mol / 12.01 g C ( relationship; 1 mol C = 12.01 g C )

0.0265 g C x 1 mol C / 12.01 g C = 2.21 x 10 ^-3 mol C

to find atoms change to mol then times 6.022X10^23

3.10g Cu find Cu atoms

plan g -> mol cu -> atoms Cu

(3.10 g cu )x (1 mol Cu /63.55 g Cu ) ( 6.022 x 10^23 / 1 mol cu = 2.94 x 10^22 Cu atoms

Answer 3

if it exists as single atoms, the atomic mass is the mass of 1 mole. If it is diatomic, the 2 x the atomic mass is the mass of 1 mole. So, you can weigh, or mass, that amount and get one mole. Any that are gases, you can get 1 mole by finding 22.4 liters at STP.