The mole – Avogadro's constant

Last updated: 15/11/2023
Contributor: Russ Church
Image of the mole – Avogadro's constant resource
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A short but helpful PowerPoint which defines Avogadro's constant for students and includes a helpful visual summary. 

There are also five calculations with moles for students to complete (with answers). 

The Avogadro constant: 1 mole = 6.022 × 1023 molecules.


Example calculations from the teaching resource: 

Q1.  How many moles are there in 365 g of HCl?

Q2. How many moles are there in 42.5 g of NH3?

Q3. How many moles are there in 285 g of MgCl2?

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