Chem 1075Chapter 9 Lecture Outline

Chem 1075Chapter 9 Lecture Outline - Chem 1075 Slide 2...

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Chem 1075 Chapter 9 The Mole Concept Lecture Outline Slide 2 Dozen compared to Mole We use “dozen” to _________________________________; We know 1 dozen = _______________ We use “mole” to ___________________________________________________________________ Slide 3 The Mole The mole (mol) is a unit of measure for the ________________________________________in a chemical substance. A ____________ is _____________________________________(abbreviated “N”) of particles or _______________________________particles. 1 mol = Avogadro’s number = ___________________________ particles. We can use the __________relationship to convert between the number of __________________ and the _________________ of a substance. Slide 4 How Big is a Mole? The volume occupied by 1 mole of _________________________would be about the size of the _______________________. One mole of Olympic shotput balls has about the same _______________as the _________________. Slide 5 Mole Calculations I Use Avogadro’s number to convert between _________________________ and _______________: __________________________particles = _________ mole Slide 6 Mole Calculations I How many sodium atoms are in 0.120 mol Na? Slide 7 Mole Calculations I How many moles of potassium are in 1.25 x 10 21 atoms K? PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com
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Slide 8 Practice If you have 2.49 x 1024 molecules of CO2, then how many moles of carbon dioxide is that? How many atoms of Fe are in 4.75 moles of iron? How many moles would contain 3.56 x 1022 molecules of water? Slide 9 Atomic Mass vs. Molar Mass Atomic mass is the mass of an _________________ expressed in __________. The atomic mass of iron is 55.85 amu. Molar mass is the mass of _______ ______________ of a substance expressed in ________. The molar mass of iron is 55.85 g. Why are the numbers the same? Slide 10
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This note was uploaded on 01/12/2012 for the course CHEM 1075 taught by Professor Beverlykelley during the Winter '09 term at NorthWest Arkansas Community College.

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Chem 1075Chapter 9 Lecture Outline - Chem 1075 Slide 2...

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