Which enthalpy is always positive
The change in enthalpy is always positive for an endothermic reaction. Heat is necessary in order to dissolve the ice... View Article
The change in enthalpy is always positive for an endothermic reaction. Heat is necessary in order to dissolve the ice... View Article
The property or strength of conducting heat, electricity, or sound is conductivity. Relevant conductance is sometimes named. Electricity is a... View Article
The predictions of the kinetic molecular theory do not necessarily obey actual gases. Although no volume is believed to inhabit... View Article
The energy you bring in if you happen to try to rip the nucleus to pieces is binding energy. The... View Article
Heat is the amount of energy that is transmitted because of a change in temperature from one structure to its... View Article
A material is more dense in the solid than in the liquid state, as seen in most situations, the melting... View Article
Hybridization is the combining of atomic orbitals to produce new orbitals of varying energies and shapes than the initial orbitals.... View Article
Average: In Mathematics, the average is defined as the sum of all the given values divided by the total number... View Article
In Calculus, a mean value theorem states that if a function is differentiable on the interval (a, b), and continuous... View Article
A function is said to be differentiable at a point, if there exists a derivative. For example, if a function... View Article
The aniline amino group is ortho and para-directing, while meta-directing is aniline hydrogen chloride. The NH2 group in aniline is... View Article
Coupled reaction is a chemical reaction in which energy is moved from one side of the reaction to the other... View Article
The “nitronium ion” or the “nitryl cation” is the electrophile, NO2+. This is caused by a reaction between sulphuric acid... View Article
A bimolecular nucleophilic substitution (SN2) reaction is a form of nucleophilic substitution whereby an electron deficient electrophilic core is attacked... View Article
Originally, the term oxidation was used to describe reactions where an element reacts with oxygen. Antoine Lavoisier first used the... View Article
Hyperconjugation (or σ-conjugation) refers in organic chemistry to the delocalization of electrons with the presence of mainly σ-character bonds. Increased... View Article
Enzymes are proteins that have a special ability to speed up chemical reactions within cells (some may be catalytic RNA).... View Article
A body’s position at rest or in uniform motion, the result of all the forces on which zero is centred.... View Article
(Cr2O7)2- is an oxidizing agent. It is a conjugate base of a hydrogen dichromate. The oxidation number of chromium in... View Article
Under acceptable tolerances, certain gases such as helium, oxygen, hydrogen, noble gases, certain heavy gases such as carbon dioxide and... View Article