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a quantity of particles of any type equal to Avogadro's number, or 6.02×10 23 particles

Avogadro's number

6.02 x 10 23

Representative particles

can be atoms, molecules or ions

molar mass

the mass of one mole of a substance

find moles

(grams/molar mass)

find grams

(moles * molar mass)


standard temperature and pressure

find percent composition

(mass / mm) x 100

find molecular formula using empirical formula

calculate mm, divide by mm of empirical formula, multiply by ratio

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