Dimensional Analysis Any calculations involving the use of the dimensions of the different physical quantities involved is called dimensional analysis. It is used for any one of the following purpose: (1) To convert a physical quantity in one type of units into some other units:The method used is called factor label method or unit factor method. (a) First determine … [Read more...] about Dimensional Analysis
Class 11
Absorption and Emission Spectra
Electromagnetic spectrum The electromagnetic spectrum consists of radiation of different wavelength and frequency. An instrument used to separate the radiations of different wavelength is called spectroscope or spectrograph. A spectroscope consists of a prism or a diffraction grating for the dispersion of radiation and a photographic film to examine the emergent … [Read more...] about Absorption and Emission Spectra
Mole Concept
Mole Concept Some Basic Concepts of Chemistry Class 11 Avogadro's number or Avogadro's constant (NA) One gram atom of any element contains the same number of atoms and one gram molecule of any substance contains the same number of molecules. The value was found to be 6.022137 × 1023 The value generally used is 6.022 × 1023 . This is called Avogadro's number … [Read more...] about Mole Concept
Mole Concept in Solutions
A solution is defined as a homogeneous mixture of two or more chemically non reacting substances, the relative amount of which can be varied up to a certain limit. If a solution consist of only two components it is called a binary solution. The component present in smaller amount is called solute while the other present in larger amount is called solvent The … [Read more...] about Mole Concept in Solutions
Electromagnetic Wave Theory
Electromagnetic wave theory This theory was put forward by James clark Maxwell in 1864. The main points of this theory are: 1)The energy is emitted from any source continuously in the form of radiations and is called the radiant energy. 2)The radiations consist of electric and magnetic fields oscillating perpendicular to each other and both perpendicular to the … [Read more...] about Electromagnetic Wave Theory