Mole calculations 1
Download
1 / 9

Mole Calculations 1 - PowerPoint PPT Presentation


  • 125 Views
  • Uploaded on

Mole Calculations 1. Chemical Calculations. Atoms and molecules are extremely small. If they are so small and so light, how can we weigh them?. We weigh large numbers of them. 1.00 g H = 6.02 x 10 23 atoms = 1.00 mole This is called Avogadro’s number.

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

PowerPoint Slideshow about ' Mole Calculations 1' - connor-merrill


An Image/Link below is provided (as is) to download presentation

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

Chemical Calculations

Atoms and molecules are extremely small.

If they are so small and so light, how can we weigh them?

We weigh large numbers of them.


1.00 g H = 6.02 x 1023 atoms = 1.00 mole

This is called Avogadro’s number


1 dozen donuts = 12 donuts

1 century = 100 years

1 millennium = 1000 years

1.00 mole = 6.02 x 1023 particles


TThe mole is a large number of particles

pparticle

Aatom element Cu 6.02 x 1023 atoms/mole

Mmolecule covalent CH4 6.02 x 1023 molecules/mole

FFormula Unitionic NaCl 6.02 x 1023 FUs/mole


1. Convert 2.5 x 1025 at C to moles

2.5 x 1025 at C

x 1 mole

= 42 moles C

6.02 x 1023 at C


2. Convert 16.3 moles CO2 to molecules

16.3 moles

x 6.02 x 1023 molecules

= 9.81 x 1024 molecules

1mole


3. Convert 8.9 x 1024 molecules CO2 to moles

x 1 mole

8.9 x 1024 molecules

= 15 moles CO2

6.02 x 1023 molecules


4. Convert 28 moles NaCl to Formula Units

x 6.02 x 1023 FU

28 moles

= 1.7 x 1025 FUs

1mole


ad