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determination of lattice energy
Amines are soluble in organic solvents whereas ammonium salts are not. Is it true? Ans) yes because amine is contain R-NH2 group where R is carbon groups so they are in polar nat
Uses of Acid Amides (a) Acid Amides used in organic synthesis. The compounds like methyl cyanide, Methylamine and ethylamine can be prepared. (b) Acid Amides used in leathe
Radius of the first Bohr's orbit of hydrogen atom is: (1)1.06 Å (2) 0.222 Å (3) 0.28 Å (4)0.53A Ans: 0.53 Å
Consumer Oriented Product Development It is important that new product development strategies are adjusted to identified needs in the market. This requires an appropriate met
The number of d electrons in Fe +2 (atomic number of Fe= 26 ) is not equal to that of the: (1) p-electrons in Ne (At. No.= 10) (2) s-electrons in (At. No.= 12)
A reaction has a rate constant of 1.22x10^-4 /s at 28 C and 0.230 /s at 75.0 C. 1. Determine the activation barrier for the reaction in kj/mol. 2. What is the value of the rate co
Q. Limitations of Hybrid orbitals? It gives no idea whether a particular metal ion would prefer to have any particular geometry say, an octahedral or tetrahedral with a giv
The value of Planck's constant is 6.63x 10 -34 Js. The velocity of light is 3.0x 10 8 ms -1 . Which value is closest to the wavelength in nanometres of a quantum of light with
unit of ell constant .
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