elementary school

. In the modern day world, with so many chemical pollutants in the environment, it becomes very essential to study the transformation of these pollutants in the environment. To do this, one needs to have a knowledge of chemical kinetics. The first chemical reaction whose rate was quantitatively stu..

So far, we have assumed that the elementary events are equally likely and we have used the corresponding definition of probability. However the same definition of conditional probability can also be used when the elementary events are not equally likely. This will be clear from..

m ). Molar volume of all gases under normal pressures (1 atm) and normal temperature (273K) have a value of 22.4 litre and contains 6.023 x 10 2 3 molecules. The number is called the Avogadro's number or Avogadro's constant and is denoted by N A . Avogadro's law is very useful in chemistry and h..

In ordinary conditions, carbon dioxide is neutral towards combustibility, i.e. it neither supports combustion nor is combustible. Certain very active metals, e.g., magnesium, sodium and potassium can continue burning in a jar of the gas and reduce the gas to elementary carbon (a) With M..

The discovery of the electron, proton and neutron was the starting point of new avenues of research in science, which gave physicists an insight into the structure and nature of the atoms of matter. An atom is made up of three elementary particles, namely electrons, protons and neutr..

Limits- operations on functions Continuity of a function Intermediate value, extreme value theorem Derivatives, differentiability Derivatives of functions Chain rule Rolle's theorem, mean value theorem, and L'Hopital's rule Maxima, minima, inflection points, intervals Newton's method (app..

A complex reaction involving two series reactions can be of the type, A reacts to give B, which is then transformed to C. Both the elementary reactions (1) and (2) exhibit first - order kinetics, that is, For this reaction, [A] = [A] o exp (-k 1 t) (36) It is difficult to derive the conce..

The rules used for the calculation of oxidation number of an atom in a molecule are: The oxidation number of an element in the free or elementary state is always zero. For example, oxidation numbers of helium in He, hydrogen in H 2 , oxygen in O 2 , iron in Fe, bromine in Br 2 , phosph..

Two objects made of the same material, say marble, would have heat capacities proportional to their masses. It is therefore convenient to define a heat capacity per unit mass or specific heat that refers not to an object but to a unit mass of the material of the object. Equation (i) then becomes ..

. Transition state is supposed to be in equilibrium with the reactants. It also has a very short life. That is why, when it was proposed in the 1930s, it was not possible to study the transition state with the techniques available then. With the help of laser pulses of femtosecond to picoseconds le..