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Q. What do you mean by Dehydration? The word dehydration usually refers to the use of controlled conditions of heating, with the forced circulation of air/artificial dryer as
The nitrogen atom has 7 protons and 7 electrons, the nitride ion (N 3 -) will have: (1) 7 protons and 10 electrons (2) 4 protons and 7 electrons (3) 4 protons and 10 e
For p-orbital, the magnetic quantum number has value: (1) 2 (2) 4, - 4 (3) - 1, 0, +1 (4) 0 Ans: - 1, 0, +1
ionic equation for potassium dichromate and potassium manganate
The mole fraction of solute and solvent is equal to
Solid xenon forms crystals with a face centered unit cell that has an edge of 620 pm. 1. calculate the atomic radius of xenon. 2. calculate the packing efficiency if xenon. So
give two reasons why it is necessary to ionize the chromium atoms
Calculate the molar concentration of the solution essential to obtain the value of 10 molecules per µm2. (For this calculation we suppose that the transfer of the dye molecules fro
Which set of quantum numbers for an electron of an atom is not possible: (1) n=1 l=0, m=-0, s= +1/2 (2) n=1, l=1, m=-1, s= +1/2 (3) n=1, l=0, m=0, s= -1/2 (4) n=
In lab, buffers solution based onto a 0.1 M solution of sodium phosphate at pH7.0. Within this system, there are three of pK A s like: 12.7, 7.21 and 2.12. Determine the conce
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