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Vulcanization of rubber The procedure of heating natural rubber with sulphur to enhance its properties is known as vulcanization. Vulcanization was illustrated by Charles Goody
Cast iron is iron or a ferrous alloy which has been heated until it liquefies, and is then poured into a mould to solidify. It is usually made from pig iron. The alloy constituents
The aluminum foil on a certain roll has a total area of 18.5m2 and a mass of 1275g. Using a density of 2.7g per cubic centimeter for aluminum, determine the thickness in millimeter
define term hardness,explain units of hardness
Which of the following sets of quantum numbers is correct for an electron in 4f orbital: (1) n-=4, l=3. m+1, s= +1/2 (2) n-=4, l=4. m-4, s= -1/2
The number of unpaired electrons in 1s 2 2s 2 2p 4 is: (1) 4 (2) 2 (3) 0 (4) 1 Ans: 2
You are given a sample block of an unknown metal. The block displaces 3.24 mL of water and has a mass of 62.5429 g. What is the density of the unknown metal? What is the metal?
explain the mechanism
Q. What is structural formula and how to write it? Ans. To represent an organic molecule, a structural formula is often used. As a structural formula shows how the atoms i
preparations of hydroquinone
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