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# Chemistry: Mole intro

Introductory lecture to the mole and simple mole conversions

by

Tweet## Abbey Wood

on 27 February 2013#### Transcript of Chemistry: Mole intro

The Mole Particles and Mass Representative Particles Units, units, units You will be able to...

1. define a mole as a counting unit of chemistry

2. identify relationships between different moles, mass, and representative particles

3. make calculations based on those relationships smallest particle of a substance that still retains its properties

ELEMENTS: atoms

IONIC CPDS: formula units

MOLECULAR CPDS: molecules amu: measures mass of single atoms

gram: SI unit of mass

mole: SI unit for measuring amount (count) of substance

6.02 x 10^23 Def.: the mass in grams of one mole of a substance (units: grams/mole) Molar Mass Find the molar masses:

Calcium, Nitrogen

Chlorine, Copper

Carbon Dioxide

Sodium Chloride representative

particles Use dimensional analysis

The mole is a counting unit...

How many sig figs? 1 mol equals... Calculate the number of molecules in 11.5 mol H2O. You try one... Did you get 6.92 x 10^24 molecules ? A couple other ways... If you needed 0.50 moles of zinc (Zn) for a lab, how many grams would you measure out? If you needed 1.500 x 10^23 molecules of water, how many grams would you measure out on the balance? Did you get 32.7 g ? Did you get 4.5 g? Let's Practice a bit 1) What is the mass of 2.5 x 10^20 atoms of fluorine (F)?

2) What is the molar mass of aluminum oxide?

3) What would be the mass of 0.0010 mol of aluminum oxide?

Full transcript1. define a mole as a counting unit of chemistry

2. identify relationships between different moles, mass, and representative particles

3. make calculations based on those relationships smallest particle of a substance that still retains its properties

ELEMENTS: atoms

IONIC CPDS: formula units

MOLECULAR CPDS: molecules amu: measures mass of single atoms

gram: SI unit of mass

mole: SI unit for measuring amount (count) of substance

6.02 x 10^23 Def.: the mass in grams of one mole of a substance (units: grams/mole) Molar Mass Find the molar masses:

Calcium, Nitrogen

Chlorine, Copper

Carbon Dioxide

Sodium Chloride representative

particles Use dimensional analysis

The mole is a counting unit...

How many sig figs? 1 mol equals... Calculate the number of molecules in 11.5 mol H2O. You try one... Did you get 6.92 x 10^24 molecules ? A couple other ways... If you needed 0.50 moles of zinc (Zn) for a lab, how many grams would you measure out? If you needed 1.500 x 10^23 molecules of water, how many grams would you measure out on the balance? Did you get 32.7 g ? Did you get 4.5 g? Let's Practice a bit 1) What is the mass of 2.5 x 10^20 atoms of fluorine (F)?

2) What is the molar mass of aluminum oxide?

3) What would be the mass of 0.0010 mol of aluminum oxide?