# What is meant by the term 'mole' (and its unit, 'mol') in chemistry? (Hint: not a small burrowing mammal)

##### 1 Answer

A

*The number is chosen, though, so that a large quantity of quantum-sized objects (i.e. atoms, molecules, etc) can be described in more manageable, less awkward values.*

For instance, instead of saying we have

#6.022xx10^23 cancel"atoms" xx ("1 mol")/(6.022xx10^23 cancel"atoms")#

#=# #color(blue)("1 mol of atoms")#

It's just a new unit to express a large quantity of things.

**quantity** as **quantity** as *number* of them.

We have defined our units so that, for example, the atomic mass of **one** atom of carbon-12. But if we express the mass as

The

Suppose we have

The molar mass of

#25 cancel("g N"_2) xx ("1 mol N"_2)/(28.014 cancel("g N"_2))#

#~~ "0.892 mol",#

which is a smaller number and easier to work with.