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Most students get confused when they hear “one mole has 6.022 × 10²³ particles.”
But here’s the simple truth:

A mole is just a counting unit like saying a dozen means 12, a mole means 6.022 × 10²³.
Whether it’s atoms of oxygen or atoms of copper… 1 mole always contains the same number of particles.

The only thing that changes?
Their mass.
1 mole of carbon = 12 g.
1 mole of copper = 63.5 g.
Yet both contain exactly 6.022 × 10²³ atoms.

This single idea is what makes chemical equations work it connects what we see in the lab to what’s happening at the atomic level.

Save this post if you want stoichiometry, gas laws, and chemical reactions to finally make sense. 🧪

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