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21 private teachers in Mecca

د. وليد - Mecca45€
45€Thermal changes accompanying physical and chemical changes
Trusted teacher: Thermal changes accompanying physical and chemical changes Thermal changes accompanying physical changes - melting temperature It is the temperature change when one mole of solute is dissolved in a given amount of solvent (The amount of heat energy absorbed or released when one mole of solute is dissolved in a given amount of solvent). During the dissolution process: two processes occur: A- Dissociation: the breaking of bonds (endothermic reaction) Sodium and chloride ions dissociate from the crystal lattice as a result of the ionic bond breaking. The energy absorbed to break the bond is called the heat of the crystal lattice (bond energy). - Crystal lattice temperature: It is the energy needed to break the bond between ions in the crystal lattice. B- Hydration: The dissociated ions bind with water molecules to form hydration ions (exothermic process). Rehydration temperature: It is the amount of heat released when hydrating ions bind to water molecules. If the crystal lattice temperature > heat of hydration Dilution temperature: It is the heat change per mole of solute when diluted from a concentrated solution to a dilute solution. (It is the heat change of one mole of solute when diluted in a large amount of water (about 1000 moles of solvent)). Sedimentation temperature: The amount of heat released when one mole of an insoluble substance is completely precipitated. - heat of combustion It is the amount of heat released when one mole of a substance is completely burned in an abundance of oxygen. (The reaction is always exothermic). Formation temperature: It is the amount of heat released or absorbed when one mole of a compound is formed from its elemental elements so that the elements are in their standard state. (at 25 °C, a pressure of 76 x g). Note: Heat of formation of the elements = zero
Chemistry · Physics · Science
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Lydia - Antwerp, BelgiumRecently active56€
56€Piano Lessons in Classical and Contemporary Styles for Beginning-Advanced Levels (ages 6 and up)
Trusted teacher: Welcome to my piano teaching studio! I am a professional pianist offering private piano and theory lessons for students of all levels. As a pianist with over 14 years of teaching experience in Europe and the USA, as well as over 23 years of playing/performing, I enjoy motivating my students with music of their own preferred style and interest, whether that be classical or contemporary. My main goal is to promote a positive experience and love for music-making during the learning process. If the student is interested in a more structured approach, I guide preparation for grades 1-8 of the Associated Board of the Royal Schools of Music (ABRSM) piano and music theory exams where my students consistently receive highest marks. I also have successful experience preparing students for conservatory entrance auditions, masterclasses, and competitions in the Europe, the USA, India, and Canada. We have class concerts at Pianos Maene for interested students twice per year. I am happy to provide either a more relaxed or a serious approach to learning piano, we simply need to discuss the personal goals and preferences of each student. My own studies are as follows: I have obtained two postgraduate performance degrees at the Royal Conservatory of Antwerp: "Concertsoloist" in Piano Performance and "Chamber Music." Prior to this, I received my Bachelor and Masters degrees in Piano Performance/Music from the University of Minnesota - Minneapolis and Texas Christian University, Fort Worth (USA). My experience includes collaboration with many different instrumentalists and singers, performing as a soloist and collaborative member in several orchestras, and receiving top prizes in several competitions. While maintaining my performance and recording career in Belgium at present, I am developing my private music studio in central Antwerp and look forward to meeting new students.
Piano · Keyboard (music) · Music theory
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Only reviews of students are published and they are guaranteed by Apprentus. Rated 4.7 out of 5 based on 266 reviews.

Private French lessons for adults and teenagers with native French speaker in Co. Mayo (Newport)
Phillip
It is always a pleasure to meet Phil for our weekly online French classes. He is a patient and kind teacher and always full of energy for our class. Phil is interested in a wide range of topics, so we always have something to talk about based on an article he selected as 'homework'. What I really appreciate about his way of teaching is that he corrects me during our conversation without breaking the flow of our talk, so I can really feel my confidence in speaking French increasing each class. I woulf highly recommend Phil if you are looking for a French tutor :)
Review by USER
Tuition Math - Physics - Chemistry - Biology (Mexico City)
Raef
I found Dr. Ralf to be a wonderful Teacher. The things that he taught me through online helped me a great deal in this class as well as in statistic level. Because of the help and attention that He provided me with, I understand and enjoy Statistics. The class was great in that he didn’t just give the answers away – he made me THINK. This was sort of frustrating, but it helped me understand the material much better. I would recommend him as a Teacher for future classes, without a doubt.
Review by AHMED
Piano Lessons in Classical and Contemporary Styles for Beginning-Advanced Levels (ages 6 and up) (Antwerp)
Lydia
I had my first lesson today and I was immediately struck with the feeling that I am in the presence of a maestro in Piano playing, a professor in teaching and an extremely patient pedagogue. It was like Lydia knew me for years and instantaneously detected my strengths and my weaknesses in my piano playing and practice. I am an adult student and I highly recommend Lydia for all ages and all levels. An exceptional teacher that provides and exceptional lesson experience.
Review by CHAIM

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