Mole, Particle, and Mass Conversions

Austin High School ChemistryMs. Lizette Gutierrez

The mole

Avogadro’s number (a constant) tells us how many representative particles are in 1 mole of anything! The number of particles in exactly 1 mole is

6.022 x 1023. This is Avogadro’s number. There are 12 of anything in one dozen The mole is a counting system just like the

dozen There are 602,200,000,000,000,000,000,000

of anything in one mole.

Representative Particles

Depending on the substance, the representative particles are called different things. Look at the chart

below.

Types of Substances Representative Particle

Element Atom

Molecular Compound (covalent) Molecules

Ionic Compound Fomula Units

Molar Conversion Map

Mole Mass (g) Conversion Example #3

Aluminum is often used for the structure of light-weight bicycle

frames. How many grams of Al are in 3.00

moles of Al?

Mass (g) Mole Conversion Example #2

You and your friend discover a buried treasure in your back yard. You find a pure

elemental gold (Au) bar. The total weight for the gold bar

is 2500 grams. How many moles of gold (Au) did you

find?

Grams (g) MolesConversion Example #3

Prozac, C17H18F3NO, is a widely used

antidepressant that inhibits the uptake of

serotonin by the brain. How many moles of

Prozac does a sample of 550 grams of Prozac

contain?

The artificial sweetener aspartame (Nutra-Sweet) formula C14H18N2O5 is used

to sweeten diet foods, coffee and soft drinks. How many grams of aspartame are present in 3.43 moles

of aspartame?

Moles Mass (g)Conversion Example #4