chemitry, Chemistry

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The energy of an electron in orbit of hydrogen atom is, The energy of an e...

The energy of an electron in   orbit of hydrogen atom is : (1) 13.6/n 4 x eV                 (2) 13.6/n 3 xeV   (3) 13.6/n 2 xeV                 (4)13.6/nx eV Ans:

Forming ions, Write an equation that shows the formation of the selenide io...

Write an equation that shows the formation of the selenide ion from a neutral selenium atom

Periodic table, lithium and beryllium markedly differ from other members of...

lithium and beryllium markedly differ from other members of their respective groups.

How to calculate caco3 equivalent , Q.  Ca +2 = 20 ppm, Mg +2 = 25 p...

Q.  Ca +2 = 20 ppm, Mg +2 = 25 ppm, CO 2 = 30 ppm, HCO - 3 = 150, K + = 10 ppm. Calculate the lime (87% pure) and soda (91% pure) required softening 1 million litt

Polymers, polymers based upon availabilty

polymers based upon availabilty

Explain imidazole, Imidazole Imidazole has one nitrogen that has the ...

Imidazole Imidazole has one nitrogen that has the electronic character of the nitrogen in pyrrole, and one that is like the nitrogen in pyridine, except that it is somewhat m

The maximum number of electrons that can be accommodated, The maximum numbe...

The maximum number of electrons that can be accommodated in the M th    shell is: (1) 2        (2) 8     (3) 18         (4) 32 Ans: 18

Transfer function c(s)/r(s), Verify the transfer function C(s)/R(s) for th...

Verify the transfer function C(s)/R(s) for the block diagram given below.

What is pseudo first order reaction? explain with examples., The order of a...

The order of a reaction is occasionally changed by conditions. Consider a chemical reaction between two substances where one reactant is there in large excess. During the hydrolysi

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