the addition principle

If two events E 1 and E 2 can occur independently in exactly m ways and n ways respectively, then either of the two events can occur in (m + n) way..

Sulphur present in any organic compound is oxidized to sulphuric acid by digesting with fuming nitric acid. Sulphuric acid so formed is then quantitatively precipitated as barium sulphate by the addition of excess barium chloride. The precipitate of barium sulphate is filtered, washed, d..

a) The equilibrium constant for this reaction is written in terms of the partial pressures of the reactants and products. So, b) This reaction is exothermic. So, its equilibrium constant should increase with the lowering of temperature. Therefore, the value of K p at 300 K will be greater than ..

The concepts of solubility product and common ion effect play an important role in qualitative analysis for the separation of basic radicals (cations) into different groups. Weak acids and weak bases ionise in water slightly and an equilibrium is established in their solutions. For example, in the..

Mendel was primarily a monk in a monastery. In addition to his normal duties of preaching in the church, Mendel evinced a keen interest in the maintenance of the garden in the premises of the church. In the course of his routine rounds in the garden, Mendel was keenly observing the patter..

. In terms of respective intensities I 1 , I 2 are intensities of waves coming from A and B respectively. In addition if I 1 = I 2 Then 3. If W 1 and W 2 are the widths of two slits from which intensities of light I 1 and I 2 emanate, then 4. Conservation of energy in interference If ther..