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Test preparation (abbreviated test prep) or exam preparation is an educational course, tutoring service, educational material, or a learning tool designed to increase students' performance on standardized tests.
N-(1-Naphthyl)ethylenediamine dihydrochloride is widely used in the quantitative analysis of nitrate and nitrite in water samples by colorimetry.It readily undergoes a diazonium coupling reaction in the presence of nitrite to give a strongly colored azo compound.
This is a two-year track. In most schools, only the second year is explicitly focused on entrance exams preparation. If a student could not obtain the school(s) they wanted, they can repeat the second year. There are three main branches : Scientific branch study mainly math, physics and chemistry, IT, industrial sciences, biology and earth ...
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
Methyl ethyl ketone peroxide (MEKP) is an organic peroxide with the formula [(CH 3)(C 2 H 5)C(O 2 H)] 2 O 2.MEKP is a colorless oily liquid. It is widely used in vulcanization (crosslinking) of polymers.
The FE exam is a computer-based exam administered year-round at NCEES-approved Pearson VUE test centers. [3] The Principles and Practice of Engineering Exam (PE exam) tests for a minimum level of competency in a particular engineering discipline. It is designed for engineers who have gained a minimum of four years’ post-college work ...
The exam is 285 minutes (4 hours and 45 minutes) and consists of 275 scored questions. There are eight topics covered in separate subtests: grammar, reading comprehension, vocabulary and general knowledge, basic math skills, anatomy and physiology, biology, and chemistry.