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what is solid
Q. In 1982, the International Union of Pure and Applied Chemistry recommended that the value of the standard pressure p o be changed from 1 atm to 1 bar. This change affects the
Physical charterstics of monocarboxylic acids Physical state: The first or initial three members (upto 3 carbon atoms) are colourless, pungent smelling liquids.
The radius of electron in the first excited state of hydrogen atom is: (1) a 0 (2) 4a 0 (3) 2a 0 (4) 8a o
Effect of substituent on acidic nature (a) An electron withdrawing substituent that is - I effect stabilizes the anion by dispersing the negative charge and hence increases the
Explain detergents? Give their scheme classification. Why are the detergents preferred over soaps?
why are some liquids purified by distillation under reduced pressure
COMPOUNDS A AND B CONTAIN COPPER AND SULPHUR.EACH CONTAINS 20% AND 33.33% EACH BY MASS OF SULPHUR RESPECTIVELY.FIND THE RATIO OF THE ELEMENTS USING THE THIRD LAW OF CHEMICAL COMBIN
The cell diagram of a mercury cell can be written Zn(s) | ZnO (s) NaOH (aq) HgO (s) HgO (I) (a) Write the electrode reactions and cell reaction with electron number z = 2.
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
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