Unit #1Unit #2Unit #3Unit #4Unit #5Unit #6Unit #7Unit #8Unit #9Unit #10
spacerUNIT # 7  
spacerspacerIntroduction
spacerspacerObjectives
spacerspacerReading

spacer7.1 Calculation of
spacerFormula
spacerMass

spacer7.2 Mole
spacerConcept

spacer7.3 Atomic Mass
spacerRevisited

spacer7.4 Calculation of
spacerMolar Mass
spacer
7.5 Calculations
spacerinvolving
spacerAvogadro #

spacerMass to mole conversion and vice-versa
spacermole to number of particles conversion and vice-versa
spacerMass in grams to number of particles conversion
spacer
7.6 Molar Volume
spacerof a Gas
spacerMolar volume calculations
spacer
7.7 Percent
spacerComposition
spacer
7.8 Empirical
spacerFormula

spacer7.9 Empirical
spacerMass to
spacerMolecular
spacerFormula



spacerProblems
spacer1 | 2
| 3 | 4 | 5

Unit #7 CALCULATIONS BASED ON FORMULAE

7.5 - Calculations involving Avogadro's number

7.5.2 - Moles to number of particles conversion and vice-versa

Whenever you want to convert quantities from one unit to another, you need to use the appropriate conversion factor. The conversion factor must have units of the two quantities involved.

To convert between moles and number of particles*,
(Note that both "moles and "number of particles" are counting units.)

* particles can be protons, electrons, atoms, ions, molecules, etc ...

Conversion factor is:

Avogadro's number (section 7.2)

because Avogadro's number relates moles to number of particles. It has units of

To convert:


  1. you need to multiply by Avogadro's number.

  2. you need to divide by Avogadro's number.

Click to see a detailed summary.

Section 8.2
Calculation of Moles of Units. Avogadro's Number (N) ..p189

 

Back


All contents copyrighted © 1996-2006
British Columbia Institute of Technology
Chemistry Department - 3700 Willingdon Avenue
Burnaby, B.C. Canada V5G 3H2