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Write the structures of monomers used in the preparation of:
a. Teflon
b. PMMA
20ml of water sample requires 15ml of 0.1mg/l sodium carbonate using phenolphthalein indicator. state the type of acidity and calculate the acidity
what are the tree laws of chemical reaction
when a 0.800g sample of CaCl2 is dissolved in 9.85g of water in a microscale calorimeter the temperature of the solution rose from 23.4 degrees celcius to 35.8 degrees celcius.calc
How does it help in stabilising a structure Ans) More alpha hydrogens more hyper conjugations More hyper conjugation more is the stability Less inductive effect more hyper
An element has the electronic configuration 1s 2 , 2s 2, 2p 6 , 3s 2 , 3p 2 . Its valency electrons are: (1) 6 (2) 2 (3) 3 (4)4 Ans: 4
what are imperfection in solids
Physical Properties of Cinnamic Acid (a) Cinnamic Acid is a white crystalline solid and its melting point 133° C . (b) Cinnamic Acid is sparingly soluble in water. (c) Ci
what is avarat sarni
formula of chromium (III) and acetate
suppose n mmol of solute A in Vaq ml of aqueous solution is extracted with Vorg ml of animmiscible organic solvent. at equilibrium n1 mmol of A will remain in the aqueous layer and
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