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Moles and more moles

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Harvey Buckle

on 26 February 2016

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Transcript of Moles and more moles

Moles and more moles
To know the relationship between quantities of atoms and molecules and ions
To relate this to an experiment
To relate this to a question
The mole
In chemistry, the term mole represents a pile or mass of atoms, molecules, ions or electrons. Just as common man measures quantity in terms of kilograms or dozens, a chemical scientist deals with a 'mole' of atoms, molecules, ions or electrons.
Mole is defined as the amount of a substance, which contains the same number of chemical units (atoms, molecules, ions or electrons) as there are atoms in exactly 12 grams of pure carbon-12.
1. Questions
2. Practical and evaluation
3. More questions!
Find out and write down YOUR UNDERSTANDING of what STOICHIOMETRIC means
What is a:
bakers dozen
A mole represents a collection of 6.023 x 1023 ( Avogadro's number) chemical units. Thus a mole represents the quantity of material, which contains one Avogadro's number of chemical units of any substance. The unit of mole is denoted as 'mol'.
For example

One mole of hydrogen atoms = 6.023 x 1023 atoms of hydrogen
One mole of hydrogen molecules = 6.023 x 1023 molecule of hydrogen
One mole of electrons = 6.023 x 1023 electrons
One mole of sodium ions (Na+) = 6.023 x 1023 Na+ ions
Unit 1 - Stoichiometric relationhips = 21 lessons
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