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Silicon has 4 electrons in the outermost orbit. In forming the bonds: (1) It gains electrons (2) It loses electrons (3) It shares electrons (4) None of these Ans: I
The mass of a photon with a wavelength equal to 1.54 x 10 -8 cm is: (1) 0.8268 x 10 -34 kg (2) 1.287 x10 -33 kg (3)1.4285x 10 -32 k
Nucleus - Nomenclature of simple aromatic compounds The benzene ring denoted by regular hexagon of six carbon atoms along with three double bonds in the alternate positions is
The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy obtained from burning 1.20 pounds of butane (fuel v
what is the volume of a gas when the temperature is raised to 25 degrees celcius fro STP?
ELECTROCHEMISTRY AND ION CONCENTRATION Activity dependence of cell voltage: Measurement of galvanic cell potentials away from the standard state provides a convenient me
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.
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An 80°C aqueous solution containing 58 wt% sodium nitrate (NaNO 3 ) is fed to a combination crystallization-settling unit operating at 25°C. The unit separates crystals from the re
during the process of extraction of pure copper from copper pyrite,SiO2 acts as acidic flux which combines with iron oxide(FeO) to form iron silicate(FeSiO3). CuFeS2 + heat ---> Cu
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