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What is vulcanization
The process of vulcanization was discovered by Charles Good Year in 1839. He found that when natural rubber is heated with sulphur, its tensile strength, elasticity and resistance to swelling enhances tremendously. This process is called vulcanization. Vulcanization process brings stiffening of the rubber by anchoring and restricting the intermolecular movement of rubber chains. Tensile strength enhances, resilience enhances, and becomes more resistant to water, organic sol- vents, light and air.
Octet rule is not valid for the molecule: (1) Co 2 (2) H 2 O (3) CO
Explain the Three Liquids - Ternary Phase Diagram? Figure on the next page is the ternary phase diagram of a system of ethanol, benzene, and water at a temperature and pressure
Explain why nichrome and not copper is used as heating element whereas manganin is used as standard resistance? For heating elements, primary requirements are high melting poin
The difference in the mass of 100 moles of sodium atoms and sodium ions is 5.48002grams .compute the mass of an electron
WHAT IS ENVIRONMENTAL CHEMISTRY?
387 J/Kg. C or 0.0924 Cal/g.C
get calcium EDTA from disodium EDTA and calcium which in complexomteric reaction. how mechanism of making ??
why lithium and beryllium markedly differ from other members of their respective groups?
Explain trend in variation of the atomic size properties from Boron and Thallium
priming and foaming.
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