Formulas Chapter 14

# Formulas Chapter 14 - Chapter 14"The Ideal Gas Law and...

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Chapter 14 - "The Ideal Gas Law and Kinetic Theory” Atomic Mass Unit Each element in the periodic table is assigned an atomic mass. One atomic mass unit (u) is exactly one-twelfth the mass of an atom of carbon-12. The molecular mass of a molecule is equal to the sum of the atomic masses of its atoms. Number of moles n = N/N A the number of moles n contained in a sample is equal to the number of particles N (atoms or molecules) in the sample divided by the number of particles per mole N A where N A is called Avogadro’s number and has a value of 6.022 x 10 23 particles per mole. The number of moles is also equal to the mass m of the sample (expressed in grams) divided by the mass per mole (expressed in grams per mole). The mass per mole (in g/mol) of a substance has the same numerical value as the atomic or molecular mass of one of its particles (in atomic mass units) Mass of a Particle The mass m particle of a particle (in grams) can be obtained by dividing the mass per mole (in g/mol) by Avogadro’s number. The Ideal Gas Law

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## This note was uploaded on 04/09/2008 for the course PHYS 101 taught by Professor Sharp during the Spring '08 term at Ohio State.

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Formulas Chapter 14 - Chapter 14"The Ideal Gas Law and...

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