LBC Chapter 12 vocab working

mole

A counting unit for molecules, ions

or particles

1 mole = 6.02 x 1023 objects, does

NOT depend on mass or volume

1 mole of various substances is

pictured to the left

Avogadro’s number

the

number of
particles
in a mole

standard temperature

and pressure (STP)

273 K
(0 oC)

1 atm

Avogadro’s law

The volume of a gas is
directly proportional to

the number of moles

under temperature and
pressure are constant.

ideal gas law

universal gas constant, R

relative humidity

The amount of water

vapor in the air
compared to the

maximum amount of

water vapor possible for
a specific temperature,

expressed as a

percentage.