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90ml of an unknown concentrated chlorine was diluted with 2250l of water.The dilution now is 0.08mg/l. what is the initial concentration of the chlorine before dilution?
Q. Show Experimental observations of werners theory? Werner showed that his postulates are consistent with experimental observations. He made use of basically three kinds of ex
the structure of a periodic table
Molecular Formula Molecular formula of a substance provides the actual number of atoms that present in one molecule of the substance. Molecular formula = n * Empirical fo
Write the chemical equation for the entire combustion of heptane, C 7 H 16 . The heat of combustion for heptane is 4817 kJ/mol. How much heat could be released if 250 kg of hept
Functional groups - IUPAC System of Naming Organic Compounds If a compound involves much more than one functional group, as compared to one of the functional group is considere
The frequency of an electromagnetic radiation is 2x 10 6 Hz. . What is its wavelength in metres : (Velocity of light = 3x10 8 ms -1 ) (1)6.0x 10 14
Q. Study of Elements of group 16? We shall discuss Group 16 elements, viz., oxygen, sulphur, selenium, tellurium and polonium. These elements are called chalcogens or the ore f
what is the precaution
Physical properties of Phenol (a) Phenol is a colorless crystalline, deliquescent solid. It attains pink colour on exposure to air and light. (b) Phenol is capable of formin
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