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Q. What do you mean by Rounding off numbers?
Rounding off numbers while you report a calculation your answer should have no more significant figures than the piece of data you used in your computation with the fewest number of significant figures. Therefore if you calculate the density of an object with a mass of 12.33 g in addition to a volume of 19.1 cm3 your answer must have only three significant figures. Though when you divide these quantities using your calculator it will show 0.6455497-lots more figures than you can report in your answer. You must round off the number to three significant figures or 0.646.
The two chair conformations of cis-1,3-dimethylcyclohexane
Amines are soluble in organic solvents whereas ammonium salts are not. Is it true? Ans) yes because amine is contain R-NH2 group where R is carbon groups so they are in polar nat
classification of mixture according to particle size, uniform mixture, composed of solute and solvent
Aluminium utensils should not be kept in water overnight.Give reason
Effects of substituents on the acidity of phenols: Existence of electron attracting group, (for example -NO 2 , -X, - NR + 3 , -CN, -CHO, -COOH) on the benzene ring increases
please provide tests in a tabular form
A red flame is produced when LiCl is heated. How can I determine which transition between the energy levels produces this colour?
Disperse dyes: These dyes are utilized to colour synthetic fabrics for example orlon, polyesters, nylon and cellulose acetate that comprise tightly bounded structures. The dyes
Voltammetry: You learnt about voltammetry. Several electrodes, especially the general microelectrodes used in voltammetry were discussed. Then we discussed the common voltamme
α -elimination reactions or 1,1-elimination reactions: A reaction where both the groups or atoms are removed from similar carbon of the molecule is called α - elimination reac
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