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Impurities of solids Impurities are frequently added to materials to improve the properties. For example, carbon added in small amounts to iron makes steel, which is stronger t
why is it useful to use moles to measure chemical quantities
describe the construction and the working of the calomel electrode
What is the structure of a DNA molecule? Ans) The DNA molecule having of two complementary strands oriented in an anti-parallel fashion. Every strand is composed of nucleotides.
why is density of interstitial compounds less than that of parent metal ?
Colloids are either positively charged or negatively charged. But What are the various factors responsible for charge on the colloidal sols?
why YbS and YbI2 are semiconducting solids but LaS and LaI2 show metallic character..
why boron have maximum covalency 4 and others have maximum covalency 6
Q. Use values of Δ f H and Δ f G to evaluate the standard molar reaction enthalpy and the thermodynamic equilibrium constant at 298.15 K for the oxidation of nitrogen to form a
explain why Ni(co)4 is known while Ca(co)4 is not known
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