NOVA CHEM 211 CH 3

Mass to mole?

mass

÷

molar mass

Mole to # of entities?

^ 6.02×1023

 

# of entities to mole?

# of entities

÷

6.02×1023

Mole to mass?
× molar mass
Molecules
Covalent compound
Ionic compound
Formula units
Mass fraction of X in compound?

Molar mass of X

÷ 

molar mass of compound.

Mass percent?
Mass fraction ^ 100
Mass in grams of X in XYZg of compound?

XYZg

×

mass fraction of X.

# of X atoms in XYZg of compound?

Mass → entities

×

# of atoms/ions

% yield?

Actual yield divided

÷

theoretical yield

×

100

Molecular formula?

Molecular mass

÷

empirical formula mass


Then multiply empirical formula by whole number product.

Molarity?

# of moles

÷

# of liters

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