DILUIÇÃO DE SOLUÇÕES ‼️ #enem #uerj #vestibular #vestibularmedicina #olhaaquimicaai #soluções

🔊 Hey everyone!!!!!!! This video covers the topic of SOLUTION DILUTION. A COMPLETE and DIRECT lesson, in which the following concepts are discussed: ➡️ What does "diluting a solution" mean? ➡️ How to dilute a solution? ➡️ What formulas are used in SOLUTION DILUTION? 00:00 Start 00:45 What does DILUTING A SOLUTION mean? 02:07 What are the most commonly used chemical formulas in DILUTION? 06:11 Solution to exercise 01 🎯 10:40 Solution to exercise 02 🎯 15:36 Solution to exercise 03 🎯 This video is brought to you by the QPV Course (Chemistry for the University Entrance Exam). A course focused on preparing students for the ENEM and other traditional university entrance exams. From March to November, students have access to two hours of weekly review classes, where ALL the content of General Chemistry, Physical Chemistry, and Organic Chemistry is covered. Classes are held live via Google Meet and are also recorded so that everyone can watch them as many times as they wish while they are students of the QPV Course. In addition, ALL classes include EXCLUSIVE support MATERIAL (theoretical handouts and exercises with answer keys), all prepared with great professionalism and focused on the main university entrance exams in the country. If you would like more information about the QPV Course, simply contact us via this link: http://bit.ly/4dxIr4J 💡 Exercises solved during the video: ✔️ (UFPI) To a 100 mL sample of NaOH with a concentration of 20 g/L, enough water was added to make 500 mL. The concentration, in g/L, of this new solution is equal to: (a) 2. (b) 3. (c) 4. (d) 5. (e) R$8. ✔️ (UERJ) Dilution is a very common operation in our daily lives, for example, when we prepare a refreshing drink from a concentrated juice. Consider 100 mL of a certain juice where the solute concentration is 0.4 mol/L. The volume of water, in mL, that must be added to reduce the solute concentration to 0.04 mol/L will be: (a) 1000. (b) 900. (c) 500. (d) 400. ✔️ (ENEM) Commercial alcohol (ethanol solution) is sold at a concentration of 96% by volume. However, to be used as a disinfectant, an alcoholic solution with a concentration of 70% by volume must be used. Suppose a hospital has received a donation of 1000 liters of commercial alcohol at 96% by volume and wants to exchange it for a batch of disinfectant alcohol. To ensure the total amount of ethanol is the same in both batches, the volume of 70% alcohol supplied in the exchange should be closest to: (a) 1042 L. (b) 1371 L. (c) 1428 L. (d) 1632 L. (e) 1700 L. 🚨 Some people always ask how I edit my videos. I use the CapCut program, a very powerful software available in two versions: free and paid (PRO). 💡 To learn how to use it, I took Professor Daniel Smiderli's course, entitled "Video Editing on Mobile Phones Course". I'll leave the link below for anyone who wants to take a look: http://go.hotmart.com/M90075245W 💰 If you purchase the course through the link above, you will be financially supporting the OLHA A QUÍMICA AÍ channel, as part of the value will be commissioned 🔥 ✅ Credits: Music: Positive Fuse Authors: French Fuse Available in the YouTube Audio Library I hope this helped 👊 Happy studying!!!!! Best regards. Prof. Thiago Santangelo #vestibular #enem #uerj #olhaaquimicaai #química #enemdicas #vestibularmedicina #fisicoquimica #soluções