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mass

& stoichiometry

'no magic to the mole'

amount

molar mass

concentration

solution volume

gas volume

molar gas volume

Avogadro
constant, L

number of
entities, N

amount of substance

Now try the following question.

C7. USING m = n M TO CALCULATE MASS FROM AMOUNT

From the definition for molar mass as the mass per unit amount of substance, the expressions below follow directly:

2020_Amount_of_substance_molar_mass_nu-p

These relationships can be used to answer questions 5, 6 & 7.

meaning of amount

amount by weighing

unit mol convenience

molar mass defined

molar mass: element

molar mass: compound

amount, n --> mass

mass --> amount, n

comparing amounts

mass % composition

emipirical formula

molecular formula

2020_Amount_of_substance_molar_mass_nu-p

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MOLAR MASS & AMOUNT OF SUBSTANCE CALCULATOR

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