<transcript><audio_31> par 40 g par mol divisé par le volume qui est 1 litre ça donne combien ? ça veut dire</transcript><transcript><audio_32> Et 6' c'est quoi ? C'est la concentration massique. Alors voilà la concentration qu'on a calculée. Passons maintenant à la molalité.</transcript><transcript><audio_33> Il faut avoir une définition. Alors, la molalité ou la concentration molale et le nombre de molles par kilogramme. C'est le nombre de molles par kilogramme.</transcript><transcript><audio_34> c'est le nombre de molles par kilogramme. Alors, d'après cette division, voilà la réalité du solvant. Mais il faut toujours</transcript><transcript><audio_35> solvant et faire la différence entre solvant et solide. Bien. Alors, essayons de voir maintenant. On va continuer. Réaction chimique. Le tfaoul.</transcript><caption><image_36>The image is a photograph of a piece of paper with the text "Université Hassan II Mohammedia Casablanca" written on it. The paper appears to be a certificate or diploma, as indicated by the logo on the top left corner. The text is written in black ink and is in French. The background of the image is white, and the paper is slightly crumpled, suggesting that it has been handled multiple times. On the right side of the paper, there is a black and white image of a person's face. The person's hand is visible in the bottom right corner, holding the paper.</caption><transcript><audio_37> Qu'est-ce que ça veut dire, réaction chimique ? C'est la réaction qui peut avoir lieu entre un nombre précis d'entités chimiques, appelées réactifs, conduisant à un nombre précis d'entités.</transcript><caption><image_38>The image shows a person's hand holding a black pen and writing on a piece of paper. The paper appears to be a document or a document of some kind. The text on the paper is written in French and is in black ink. The person is holding the pen in their right hand and is writing on the left side of the paper with their left hand. The pen is pointed towards the right side of image. The background is blurred, but it seems like the person is sitting at a desk or a table.</caption> volume equal to how much equal to 4 g / 40 climb harmon /  the volume which is a book it means how much it means launched zero towards a world per liter and if prime if what is it the mass concentration in sailing in concentration conakry let's now move on to morality dissolution firstly we must have a definition then a bed ampoule where the moral concentration and the number of flights by which the grain is an amendment per kilogram of water for Europe we will have like that as it is long per kilogram  then according to this division  here the reality is only but we must always think about the only to make the difference between according to her his soul and goods so let's try to see now continues chemical reaction has made a role which me and what does that mean chemical reaction  it is the reaction that can take place between a precise number of chemical entities called reagent leading to a precise number of
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