PPT-The Mole Concept Avogadro’s Number = 6.022 x 10

23 How do you measure how much You can measure mass or volume or you can count pieces We measure mass in grams We measure volume in liters We count pieces in MOLES Counting Counting words are used to simplify a description of a number of items . A Chemist’s “Dozen”. http://www.ccs.k12.in.us/chsteachers/VKundrat/MOLE_DAY_EXPLOD%5B1%5D.gif. The Mole. The particles that make up matter (ions, atoms, and molecules) are . extremely small. Only large amounts of these particles can be weighed. In order to simplify these large numbers we use . Unit 18. Avogadro’s Number and the Mole. Significance of Avogadro’s Number (5.3). Size of Avogadro’s Number (5.3). Definition of a Mole (5.3). Formula Mass (and Molecular Mass) (5.3). Introduction to Avogadro’s Number . The Mole. Chemist’s counting number. amount. of a substance . 1 mole is equal to 6.022 x 10. 23. atoms or particles or molecules (Avogadro’s number). There are always 6.022 x 10. 23 . particles in . Atomic mass. Atoms of different elements have different masses. . Mass of a single atom is incredibly small so a special unit called atomic mass unit (. amu. ) is used. . Atomic Mass. Atoms are composed of three particles:. Avogadro’s Principle – . equal volumes. . of gases at the same temperature and pressure contain . equal numbers of particles. Avogadro’s Formula. . Formula. : . V. 1. . = . V. 2. . . Avogadro’s Law Avogadro’s Principle – equal volumes of gases at the same temperature and pressure contain equal numbers of particles What is Avogadro’s Law Avogadro’s Formula V 1 = V 2 1 mole of a substance is 6.02 x 10. 23. . representative particles. .. Avogadro’s number = . 6.02 x 10. 23. Avogadro determined the difference between atoms and particles.. Representative particle. Use . the coefficients to predict the amount of reactant consumed or product formed. The ratio of the coefficients is a ratio of the moles taking part in a reaction.. Reactants (on the left of the arrow) are consumed. David Strauch Thesis Committee Lyndon Wester Chairperson Mary McDonald Matt McGranaghan Keywords Mole Cultural b12 Speaking of mole13 Getting a taste of mole47 62 Aspects of Mesoamerican plant dom binders. 2. Begin the Do Now . . Track Your Progress on QUIZ . LTs. . handout . (15 min. ). . The Mole and Molar Mass!. What do the following all have in common?. What doesn’t belong?. Dozen. Couple. Chapter 9. History. About 200 years ago scientists needed a unit of measure that connected the mass of a molecule or atom with how many of them there were. . Amadeo Avogadro proposed his hypothesis in 1811. At that time, there was no data on the number of particles in a mole, or an agreement on any atomic weights or the standard. . Concept 1 2¥ One mole of NaCl contains 6.022 x 10 NaCl formula units.¥ Use the mole quantity¥x23 ¥ The mass of an atom in amu¥; .g/amu = 1.674 x10-24 gMass of 1 mole of H atoms: 1.674 x10-24H What is Molar Mass? . What is a Mole? . In Latin . mole . means a "massive heap" of material.. A MASSIVE HEAP . - A front end loader operator moves mountain of sugar like sand inside the sugar warehouse at the Port of Palm Beach. (Mark Randall, Sun Sentinel). 2017 . P3 Challenge – . Determine the . number of Mg atoms in 0.35 g of . MgO. .. Today’s Objective –. Stoichiometry. Assignment: . Stoichiometry Worksheet. Agenda. Hmk. . Review. Moles and Reactions.