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give the mechanism of additin of HCN to acetaldehyde?????
The interatomic distances in H 2 and Cl 2 molecules are 74 and 198 pm respectively. The bond length of HCl is : (1) 272 pm (2) 1
The only nonradioactive isotope of fluorine has 9 protons and 10 neutrons. a. What is its mass number. b. Write the full symbol of this atom.
what are moles?
which postulate of daltons theory can explain the law of definite proportions
Indigo test
Bohr model of an atom could not account for : (1) Emission spectrum (2) Absorption spectrum (3) Line spectrum of hydrogen (4)Fine spectrum Ans: Fine spectrum
Physical properties of Dihydric alcohols (a) Dihydric alcohols is a colourless, syrupy liquid and sweet in taste. Its boiling point is 197°C. (b) Dihydric alcohols is misci
On a hot summer day in July, Jennifer is trying to make Popsicles. If she is using 20.6 g of fruit juice how much heat is released when the Popsicle changes from liquid to solid a
The energy of a radiation of wavelength 8000 Å is E 1 and energy of a radiation of wavelength 16000 Å is E 2 . What is the relation between these two: (1) E 1 =6E 2
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