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Chapter 3

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Subject: 
Chemistry
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Tags: 
Chemistry
SI base units
Mass
Chemical properties
Analytical chemistry
Molar mass
Mass fraction
Mass spectrometry
Mole
Kilogram
Molecular mass
Molar volume

Chapter 3.1 Average mass= total mass/ number of objects massed 3.2 Mass spectrometer- most accurate method currently availbe for comparing masses of atoms 3.3 Avogadro?s number- 6.022X 10^23 = one mole of something Molar mass- mass in grams of one mole of the compound g/mol Find on periodic table 3.5 Percent comp: Mass/ weight percent= (Mass of element in compound/ mass of compound)X100 3.6 Molecular formula= (empirical formula)n N is an integer To find molec formula take molar mass/ empirical formula mass and that is n SEE PAGE 96 IF CONFUSED
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