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 #7CALCULATIONS BASED ON FORMULAE

7.1 - Calculation of Formula or Molecular Mass

In section 5.1.3, we learned about formula units. The sum of the atomic masses of all the atoms which make up the compound is known as the formula mass of a compound. Formula mass is a general term applied to the mass of a substance based on summing up the atomic masses of the atoms in the chemical formula regardless of the type of bonding between atoms in the chemical formula. If the substance has covalent bonding (section 5.2), we can specifically refer to the sum of the atomic masses of all the atoms which make up the compound the molecular mass.

Here is how you determine the formula mass of a compound.


Section 8.1
Calculation of Formula or Molecular Mass ..p188

 

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