The Mole Meets Chem
What is the Mole besides a furry rodent?
1. Unit of measurement indicating the amount of
substance
2. Established by Amadeo Avogadro (1800's)
3. Amount of substance can be measured in terms of number
of particles, mass or volume.
Mole Troll
The Molar Roads
Gases
22.4L
Volume
The Mole Troll Bridge
Riddle Me This:
Are you a Gas?
Are You at STP?
Molar Mass Practice
1. 2,3-butene
(12gx 4) + (1g x 6) = 54 g/mol
2. sodium pyrophosphate
(23gx 4) + (31g x 2) + (16g x 7) = 266 g/mol
3. oxalic acid
(12gx 2) + (1g x 2) + (16gx4) = 90g/mol
4. aluminum perchromate
5.
C5H6
(27gx 2) + (52g x 3) + (16g x 15) = 450 g/mol
(1gx 2) + (12g x 2) + (16g x 4) = 90 g/mol
(12gx 5) + (1g x 6) = 66 g/mol
Navigating the Molar Roads
(Converting between molar mass, particles and volume with
proportions)
Given #,unit,substance
= X (unknown), unit,substance
Standard Value
Standard Value
(corresponds to given unit) (corresponds to unknown unit)
Choices : 1 mol, molar mass, 22.4L, 6.02 x 1023
atoms,molecules,formula units
(periodic table)
Ex. How many moles are present in a 115g sample of
cyclooctanol ?