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The difference among Threshold energy and average energy of the molecules is known as activation energy.
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what groups comprise each block of elements(s,p.d and f blocks)in the periodic table
An element have atomic weight 40 and it's electronic configuration is 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 . Then its atomic number and number of neutrons will be: (1) 18 and 22
Elevation in boiling point : Mol. Mass = (1000 K b * w) /W+ ΔT In which, K b stands for Molal elevation constant of the solvent, w stands for Mass of the compoun
Dyes Dye is a synthetic and natural colouring matter that is employed in solution to stain materials particularly fabrics. All the coloured substances are not dyes. A coloured
giving correct formulas give the reactantsand products in the formation of poly2 butane
1. The pH of a 0.02 M solution of an acid was measured as 4.6. a) What is the [H + ] of the solution? b) What is the acid dissociation constant K an
what is laws of chemical combination............answer should be in 250 words
Calculation of Number of Atoms per Unit Cell of HCP (n): One half of the each of the 2 base centre atoms (2x1/2), one six of the every of the 12 corner atoms (12x1/6) and all
DISCOVERY OF SUB-ATOMIC PARTICLES The atomic theory of the Greek philosophers, Leucippus and Democretus (400 B.C.) held that continued subdivision of matter would ultimately yi
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