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4. (a) Explain the concept of (i) intrinsic, (ii) n-type, and (iii) p-type semiconductors with the aid of bond diagrams and band diagrams. (b) What is a hole? Using a mathematic
why we multipyl by 24.52 in formula
Copper=54.1%, oxygen=20.1% and the balance sulfur. Could this also be the molecular formula? What other data is needed?
how can they used and what its side effects?
Describe the following observations: a. Lyophilic colloid is more stable than Lyophobic colloid. b. Coagulation takes place when sodium chloride solution is added to a collo
how can you prepare 20%(v:v),150ml ethanol solution
what is the relationship between the rate of cooling and the size of crystals?
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
Evidence in favor of Kekule's structure 1. Benzene combines along with 3 molecules of hydrogen or three molecules of chlorine. It also collides along with 3 atoms of ozone to
What is +M and -M effect?
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