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Documents CHEMISTRY 161 Chapter 2

CHEMISTRY 161 Chapter 2 MATTER ATOMS MOLECULES ELEMENTS John Dalton matter is composed of âbuilding blocksâ Daltonâs postulates Elements are composed of small particles…

Documents CHEMISTRY 161 Chapter 4 The Mole

CHEMISTRY 161 Chapter 4 The Mole Macroscopic versus Microscopic Worlds 2 H2 + O2 2 H2O 1 liter water contains about 3.3 X 1025 molecules CHEMICAL MASS SCALE standard / calibration…