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Condensation with formaldehyde - Miscellaneous reactions
Phenol condenses with formaldehyde (excess) in presence of sodium hydroxide or acid (H+) for about a week to form a polymer known as bakelite (a resin).
Compare the combustion energy stored in a 1 litre bottle of propane and butane. Suppose that the product temperature is 100°C. The density of liquid propane is 0.493 g cm -3
Low grade oxide, sulphide and carbonate ores of copper are treated with dilute sulphuric acid in the existence of oxygen: CuO+ H 2 SO 4 ------------------> CuSO 4 + H 2 O CuC
Q. How to calculate Percent Yield? Ans. When you make cookies the recipe may claim to make a certain number of them, but usually in the end there are less. There might be
if the bond length in chlorine molecule is 1.98 angstrom and bond length in H-CL molecule is 1.76 angstrom calculate the covalent radius of hydrogen
If you have not used tar before, try this sequence to makeanarchive ofyour llast project: %cd;tar cf llast.tar llast %tar tfv llast.tar The first line m vesyou to your hom
what is the relation with energy?
Q. Show the Liquation in purification of metals? Crude tin, bismuth and lead are purified by liquation. In this process, the impure metal is placed at the top of a sloping hear
Explain about the Defect breakdown It is because of cracks and pores at the surface. Moisture from atmosphere can collect on the surface and result in breakdown. Glazing is
Electronic configuration of Sc 21 is: (1) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 4s 2 , 3d 1 (2) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 4s 1 , 3d 2 (3)1
Q1: The complexes of Fe +2 with 1, 10- phenanthroline has a molar absorptivity of about 11,000 L/mol cm in water at 510 nm. A 20 ml water sample thought to contain Fe +2 is mix
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