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Six protons are found in the nucleus of : (1) Boron (2) Lithium (3) Carbon (4 )Helium Ans: Carbon
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?
factors affecting choice of radiotracer techniques
The chemical formula for pure water is H 2 O. Pure water breaks up into an equal number of H + (aq) and OH - (aq) ions. As the amounts of the H + and OH - ions are equal, water i
why Zn metal regarded other element
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 How To Develop A Ne
construction and working of calomel electrode???
material required
nitroalkane sare acidic in nature.Explain
if the electon in hydrogen atom is exited to n=5 the number of diffrent frequency of radiations which may be exited is
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