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why is carbon valency four
perkin ring clousre reaction
What is the percentage of light that is engaged by the sample after a path length of 1 µm? Calculate the number of photons per second absorbed by the sample. T
We are asked to design a qualitative analysis scheme that can be used to determine which cations are present in a solution containing only four of the following cations: Pb2+, Ag+,
Determine five chemical reactions you observe in your daily life. Observe the reaction carefully. Present the change in the condition of the reactants and products wit
The number of electrons in the nucleus of C 12 is (1) 6 (2) 12 (3)0 (4)3 Ans: 0
copper reacts with oxygen to form two oxide X and Y .On analysis 1.535g of X yielded 1.365g of copper and 1.450g of Y yielded 1.160g of copper. [I] determine the chemical formula o
Q. Explain about Dihalide? Dihalides: Dichlorides and dibromides are formed by the lower members of the group, viz., Se, Te and Po. These are formed mainly by dissociation of t
Chromatography - Purification of organic compounds This is a modern technique employed for the separation of mixtures into its components, purification of compounds and as well
Q. What are the properties of water? Ans. Water is a colorless, odorless, tasteless liquid with a melting and freezing point of 0 o C and a boiling point of 100 o C at 1 a
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