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Q. What are Native Minerals?
These minerals contain the metal in free or elemental state, e.g., copper, silver, gold, platinum and iron. The metals are usually found mixed with clay, sand, etc. Sometimes lumps of almost pure metals are also found. These lumps are called nuggets. Native iron is of meteorite origin and its occurrence is rare. Deposits of native iron are found in Greenland.
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
H2,Li2,B2 each has bond order equal to 1 , the order of stability is
Chemical in cosmetics The phrase cosmetics are taken from the Greek word Kosmetikos. The meaning of this is decorating. Beautifying or enhancing complexion of skin. In middle a
Which one is most stable form of 1,3 Di tertiary butyl cyclohexane?
what is avarat sarni
Calculate the ratio of d number of molecules in two energy levels at 27''c given E2=9.75x10"-13erg/mol E1=6.95X10"-13erg/mol g1=2 g2=3
what are the unique properties of colloids?
A 0.5M solution of NaNO2 is made. What is the pH of the solution?
HALOGENS The halogen group (17) is the biggest electronegative in the periodic table, and all elements readily form halide ions X-. Trends in chemistry resemble those collect in
Q. Illustrate important catalyst of aluminium? Anhydrous AlCl 3 is an important catalyst, used in organic synthesis and in the cracking of petroleum. Al 2 (S0 4 ) 3 as such o
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