Definition
1 mole = 6.022 × 10²³ entities (atoms, molecules, ions…). NA = 6.022 × 10²³ mol⁻¹ is Avogadro's number.
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Lesson overview
This lesson brings together the PDF, study notes and chapter flow so you can revise The Mole without losing the thread.
Definition
1 mole = 6.022 × 10²³ entities (atoms, molecules, ions…). NA = 6.022 × 10²³ mol⁻¹ is Avogadro's number.
Molar mass M
M is the mass of one mole of substance (g/mol). M = sum of atomic masses.
Calculating amount n
n = m / M (mol). Or n = N / NA.
Molar volume Vm
At STP (0°C, 1 atm): Vm ≈ 22.4 L/mol. At SATP (25°C, 1 atm): Vm ≈ 24 L/mol.
Experiment 1 - The Mole
Lab protocol.
Experiment 2 - The Mole
Lab protocol.
Experiment 3 - The Mole
Lab protocol.
Experiment 4 - The Mole
Lab protocol.
Experiment 5 - The Mole
Lab protocol.
Application 1 - The Mole
Industrial example.
Application 2 - The Mole
Industrial example.
Application 3 - The Mole
Industrial example.
Application 4 - The Mole
Industrial example.
Application 5 - The Mole
Industrial example.
Key Point 1
Summary 1.
Key Point 2
Summary 2.
Key Point 3
Summary 3.
Key Point 4
Summary 4.
Key Point 5
Summary 5.
Key Point 6
Summary 6.
Key Point 7
Summary 7.
Formula 1
Physical law 1.
Formula 2
Physical law 2.
Formula 3
Physical law 3.
Formula 4
Physical law 4.
Formula 5
Physical law 5.
Formula 6
Physical law 6.
Formula 7
Physical law 7.
Scientific method
Read data, identify the system, choose the model, write relations with SI units, then check the order of magnitude.
Exam focus
Precise definitions, labelled diagrams, unit conversions, document analysis, and justified numerical results.