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In this video, we will talk about the quantity of matter for the 1st Spé. We will see what the molar mass is for different chemical elements (atoms, ions, molecules). And we will see the link between the molar mass and the quantity of matter. To access the rest of the playlist, it's here: • Chemistry - 1st Spé ???? Visit us on the site: https://mathrix.fr/ ???? Subscribe: http://tinyurl.com/kx99x2n ???? Instagram @MathrixVideos (stories & lives) ???? Snapchat MathrixVideos (stories) ???? Twitter / mathrixvideos ???? Facebook https://www.fb.me/mathrix.fr