moles-8-31-11

moles-8-31-11 - How Many Atoms? Lynn A. Melton University...

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08-31-11 1 How Many Atoms? Lynn A. Melton University of Texas at Dallas August 31, 2011
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Problems with CONNECT? McGraw-Hill rep will be at UTD this Friday 10am – 1 pm. CONNECT codes Registration (if you bring your laptop) MUST have original receipt from bookstore showing proof of purchase 08-31-11 2
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Printing Lecture Notes 08-31-11 3
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Homework and Success The assigned homework problems cover all of the important – likely to be on exams – topics in a chapter. The quiz questions cover only the material treated through the Friday class before the Thursday deadline for the quiz – not all material in a chapter, not all the homework problems. 08-31-11 4
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Homework and Success The assigned homework problems cover all of the important – likely to be on exams – topics in a chapter. The hour exams and the final exam questions can come from any part of the chapters – good match to the homework problems. 08-31-11 5
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Atoms and “Empty Space” The diameter of the nucleus is about one ten-thousandth of the diameter of the atom. With so much “empty space”, why don’t atoms (materials) just pass through each other? Nice link: http://www.teachersdomain.org/resource/phy03.s 08-31-11 6
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Nomenclature (important) A z X X is the symbol for the atom, i.e, C for carbon A (left superscript) is the atomic weight (generally rounded to the nearest integer) Z (left subscript) is the atomic number 08-31-11 7
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How Many Little Red Orbs? I want to know, within 0.1%, how many little red
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moles-8-31-11 - How Many Atoms? Lynn A. Melton University...

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