What Is a Mole? How is Avogadro s number related to a mole of any substance? The Mole: A Measurement of Matter. What is a Mole?
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1 10.1 > What is a Mole? What Is a Mole? How is Avogadro s number related to a mole of any substance? 1 of 43
2 10.1 > What is a Mole? A mole of any substance contains Avogadro s number of representative particles, or representative particles. The term representative particle refers to the species present in a substance: usually atoms, molecules, or formula units. 2 of 43
3 > There are 12 eggs in a dozen eggs. There are 12 donuts in a dozen donuts. Just like a dozen is a certain number of items, so is a mole. How many atoms are there in a mole of atoms? How about a mole of molecules? A mole of basketballs? 3 of 43
4 10.1 > What is a Mole? Converting Number of Particles to Moles One mole (mol) of a substance is representative particles of that substance and is the SI unit for measuring the amount of a substance. The number of representative particles in a mole, , is called Avogadro s number. 4 of 43
5 Practice Problems for Sample Problem 10.2 Problem Solving 10.4 Solve Problem 4 with the help of an interactive guided tutorial. 5 of 43
6 10.1 > What is a Mole? Converting Moles to Number of Particles 6 of 43
7 Practice Problems for Sample Problem 10.3 Problem Solving 10.5 Solve Problem 5 with the help of an interactive guided tutorial. 7 of 43
8 10.1 > The Mass of a Mole of an Element The Mass of a Mole of an Element How is the atomic mass of an element related to the molar mass of an element? 8 of 43
9 10.1 > The Mass of a Mole of an Element Atomic Mass vs. Molar Mass The number listed on the PT can be used as either the atomic or molar mass, the only difference is the unit that you put on. Atomic mass of H = amu Molar mass of H = g/mol 9 of 43
10 10.1 > The Mass of a Mole of an Element One molar mass of carbon, sulfur, mercury, and iron are shown. 10 of 43
11 > Animation 11 Animation 11 Find out how Avogadro s number is based on the relationship between the amu and the gram. 11 of 43
12 10.1 > The Mass of a Mole of a Compound The Mass of a Mole of a Compound How is the mass of a mole of a compound calculated? 12 of 43
13 10.1 > The Mass of a Mole of a Compound To calculate the molar mass of a compound, add the molar masses of each atom in the compound. Make sure to take into account how many of each element are present. 13 of 43
14 10.1 > The Mass of a Mole of a Compound Substitute the unit grams for atomic mass units. Thus 1 mol of SO 3 has a mass of 80.1 g. 14 of 43
15 10.1 > The Mass of a Mole of a Compound Molar Masses of Glucose, Water, and Paradichlorobenzene 15 of 43
16 Practice Problems for Sample Problem 10.4 Problem Solving 10.7 Solve Problem 7 with the help of an interactive guided tutorial. 16 of 43
17 10.1 Section Quiz. Assess students understanding of the concepts in Section Continue to: Section Quiz -or- Launch: 17 of 43
18 10.1 Section Quiz. 1. Three common ways of measuring the amount of something are by count, by mass, and a. by temperature. b. by volume. c. by area. d. by density. 18 of 43
19 10.1 Section Quiz. 2. A mole of hydrogen gas, H 2 (g), contains 6.02 x a. molecules. b. atoms. c. amu. d. grams. 19 of 43
20 10.1 Section Quiz. 3. The atomic mass of fluorine is 19.0 amu, so the molar mass is a amu. b g. c x amu. d x g. 20 of 43
21 10.1 Section Quiz. 4. Calculate the molar mass of ammonium nitrate. a g b g c g d g 21 of 43
22 END OF SHOW
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