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Q. Show the chemical properties of Aluminium?
Aluminium has a very high affinity for oxygen; this is reflected in high exothermic heat of formation of Al203 (-1676 kJ mol-1). This allows aluminium to extract oxygen from other metal oxides, and forms the basis of Goldschmidt's aluminothermic process for Ca, Sr, Ba, Mn, Cr, Mo, etc:
3Mn02 + 4Al --------------------------------->+ 2AI2, 03 + 3Mn
Fe203 + 2Al --------------------------------->Al2, O3, + 2Fe (l)
I have 11.2 L of a gas at stp. I need to use the molar volume to find how many molecules are in that gas.
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Chemicals in food Several chemicals are added to food for their preservation and improving their appeal. These involve flavorings, antioxidants, fortifiers, sweeteners, dyes, e
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Q. Extraction of Aluminium? Aluminium cannot be extirpated economically from the silicate minerals. Therefore bauxite is the most important ore for the extraction of alumimum,
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Q. in radioactive decay, a nucleus emits an alpha particle and two beta particle successively. show that the final nucleus is an isotope of original nucleus. Ans: Let the mass and
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