Calculations using Avogadro's number (part 1) | Chemistry | Khan Academy
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Atomic mass units (a.m.u.) are much smaller than grams and are used to measure atomic-scale masses. Avogadro's number (6.022 x 10²³) represents the quantity of particles in one mole, linking atomic masses to measurable amounts in grams. Molar mass, expressed in grams per mole, bridges these concepts, enabling the conversion between the mass of a substance and the amount in moles.
Sections:
00:00 - Introduction
00:25 - What is an Atomic mass unit (amu or u)
04:20 - Avogadro's number and the mole
08:12 - Molar mass
10:28 - Calculating the number of atoms in a sample
11:29 - Calculating the molar mass of CO2
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