[PDF] Exercices dapprentissage : Dilution



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Concentration Exercises: Ways to Increase your Concentration

increase your powers of concentration It will be necessary to first train the body to obey the commands of the mind I want you to gain control of your muscular movements The following exercise is especially good in assisting you to acquire perfect control of the muscles Concentration Exercises: Ways to Increase your Concentration



Concentration exercises

mass concentration How much solute and solvent do we need?(result: 12,5 g of NaBr and 237,5 g of water) 4 A liter of milk has a mass of 1060 g and a 1,6 percent of mass in fat Calculate the mass concentration of fat in g/L (result: 17 g/L of fat) 5 Vinegar is a solution with a 3 mass of acetic acid How much acid is in 150 g of vinegar?



Concentration exercises with solution

mass concentration How much solute and solvent do we need? (result: 12,5 g of NaBr and 237,5 g of water) S o l u t i o n 4) A liter of milk has a mass of 1060 g and a 1,6 percent of mass in fat Calculate the mass concentration of fat in g/L (result: 17 g/L of fat) S o l u t i o n 5) Vinegar is a solution with a 3 mass of acetic acid How



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Conductance et conductivité - AlloSchool

concentration 1=5,0 10−3 −1 et un volume 2=800 de solution de chlorure de sodium ( ????++ −) à −concentration 2=1,25 10−3 1 1- Quelle est la conductivité de la solution obtenue ? 2- Dans le mélange précédent, on place la cellule d’un conductimètre La surface des électrodes est



Exercices dapprentissage : Dilution

Exercices d’apprentissage : Dilution (Corrigé) 2 9 On te donne 2 l d'une solution de concentration inconnue et on te demande d'y ajouter 250 ml de solvant La concentration de cette nouvelle solution sera alors de 20 g/l Quelle était la concentration initiale de cette solution? Réponse : 22,5 g/l 10

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