What Is A Mole?

1 / 23

# What Is A Mole? - PowerPoint PPT Presentation

What Is A Mole?. A mole is set by using the standard 12 grams of carbon-12 like 12.93 grams of Nerds. What Is A Mole?. 1 mole is a very big number 602000000000000000000000 or 6.02 X 10 23 This is like saying 1 dozen is 12, or 1 serd is 168.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about 'What Is A Mole?' - danika

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
What Is A Mole?
• A mole is set by using the standard 12 grams of carbon-12

like 12.93 grams of Nerds

What Is A Mole?
• 1 mole is a very big number

602000000000000000000000

or

6.02 X 1023

• This is like saying 1 dozen is 12, or 1 serd is 168
What Is A Mole?
• 1 mole = 6.02 X 1023 representative particles
• Representative particles are atoms, molecules, ions, or formula units
• How many atoms are in 1 mole of magnesium?
• 6.02 X 1023 CO2 molecules is how many moles?
Molar Mass
• The mass of 1 mole of any substance
• It is calculated by looking at the atomic mass of an element or elements on the periodic table
• Then multiply by how many you have and add the total

Example

H2 O

H 1.0 X 2 hydrogens = 2.0

O 16.0 X 1 oxygen = +16.0

18.0 g/mol

the units are grams

1 mol

Example

H2 O

H 1.0 X 2 hydrogens = 2.0

O 16.0 X 1 oxygen = +16.0

18.0 g/mol

the units are grams

1 mol

Mole Conversions
• Mass to moles or moles to mass

Use molar mass (periodic table)

Example : How many moles are in 3.0 g of water?

3.0 g H2 O

g H2 O

Mole Conversions
• Moles to Number of Atoms, Molecules, Formula Units or the reverse

Use Avogadro’s number 6.02 X 1023

Example : How many molecules are in 2.0 moles H2 O?

2.0 moles H2 O

1 mole H2 O

2.0 moles H2 O 6.0 X 1023 molecules H2 O

1 mole H2 O

= 1.2 X 1024 molecules H2 O

Mole Conversions
• Moles to Volume of a gas or volume of a gas to moles

Use molar volume 22.4 L/mol (liter/1mole)

Example: How many moles are in 11.2 L of oxygen gas?

11.2 L O2

22.4 L O2