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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. Solution) 1) For fcc, edge = √8rTherefore, 620 = 2.82*ri.e., r = 620/2.82 = 219.86 pm2) For fcc, packing efficiency = 74%
Illustrate process of extrusion. In this process a round heated billet of metal which is placed in a container is forced out through a die in a press. This process is normally
diagram of acetaldehyde
density of gas is 2.86 ltr.the gas maz be-
Using the valence bond approach, reduce the shape and magnetic character of What are elastomers? Write the chemical equation to show the preparation ration of Buna-S.
The concentration of hydrogen ions in solution affects the enzyme activity. Every enzyme has maximal efficiency under an optimum pH. As pH is one of the factors for the denatura
what is an atom
If 0.5 mol of BaCl 2 is mixed with 0.20 mol of Na 3 PO 4 , the maximum amount of Ba 3 (PO4) 2 that can be formed is 3 BaCl 2 + 2 Na3PO 4 = Ba 3 (PO4) 2 + 6NaCl Here cle
The only nonradioactive isotope of fluorine has 9 protons and 10 neutrons. a. What is its mass number. b. Write the full symbol of this atom.
copper reacts with oxygen to form two oxide X and Y .On analysis 1.535g of X yielded 1.365g of copper and 1.450g of Y yielded 1.160g of copper. [I] determine the chemical formula o
what would be the structure of SiS2 edge sharing linking polyhedra?
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