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What is a mole (mol)? A metric unit used to measure the amount of a substance 1 mole = 6.02 X 1023 Used to count what types of things? Very small
Dimensional analysis How many moles are in X 1024 molecules of sucrose (C12H22O11)?
# atoms in 2.5 mol Zn
# formula units in 3.25 mol AgNO3
# mol in 5.75 X 1024 atoms of Al
How many grams are in 3.5 mol Zn?What do you need to know?? How many grams are in one mole Where can you find that information? The periodic table
Molar Mass The mass of 1 mole of a substance ex) 1 mol Cu = 63.55 gUnits g/mol ex) 1 mol Cu = g
What is the molar mass of…..CuCl2 C7H6O3 Ba(OH)2
How many moles are in 525 g Ca?
Try these…… X g C6H12O6 in 5 mol? X mol in 5.5 g NaCl?X formula units in 3.2 g AgNO3?
What about particles to grams?3.2 X 1025 particles of K to grams. 125.4 grams HCl to formula units.
1. Determine the number of atoms in 2.50 mol Zn.
Molar Mass of Compounds
Conversion factors. Moles to particles Particles are atoms, molecules or ions 1 mole = Avagadro’s number of particles 1 mole___ or x
1 By definition: 1 atom 12 C “weighs” 12 amu On this scale 1 H = amu 16 O = amu Atomic mass is the mass of an atom in atomic mass units (amu)
Relating Mass to Number of Atoms
What is the percent composition of N and O in NO 2 ?
The Mole: A Shortcut for Chemists S-C-8-1_The Mole Presentation Source:
Molar mass is the mass in grams of one mole of particles (atoms, ions, molecules, formula units). Equal to the numerical value of the average atomic.
The Mole Chapter 9 What is a mole? A mole of a substance is the amount of that substance which contains 6 x particles of that substance.
Molar Mass & Conversions. The Mole mole (mol)- SI Unit for the amount of a substance that contains as many particles as there are atoms in exactly 12g.
7.3 Using Chemical Formulas Review Mole: SI unit for the amount of a substance (contains avogadro’s number of particles) Avogadro’s Number:
(4.3) The Mole and Molar Mass. THE MOLE IS THE SI UNIT FOR AMOUNT OF A SUBSTANCE. the mole represents 6.02 x particles. used for small particles.
The MOLE CH 11.
Moles, Avogadro’s Number and Molar Mass
Dimensional Analysis 1. Determine what your final unit needs to be - "what do you want" 2. Determine what unit you've been given - "what do you have" 3.
The Mole Chapter 11.
Daily science Jan 14 Write a net ionic equation for the following: ◦Aqueous solutions of calcium chloride and sodium carbonate form the precipitate calcium.
Chapter 7: Chemical Formulas and Chemical Compounds
Chapter 7 Chemical Quantities. The Mole (Friend or foe) What is a mole? 1. SI base unit to measure the amount of a substance 2. The amount of a substance.
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