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Calculate equivalent weight of 99.22% purity of hexamethylene diisocyanate (HDI)?
For the following cyclohexane molecule, illustrate clear representations of both possible chair forms of the molecule. Be sure to properly draw all the axial and equatorial groups
Number of protons, neutrons and electrons in the element 231/89 y is: (1) 89, 231, 89 (2) 89, 89, 242 (3) 89, 142, 89 (4) 89, 71, 89 Ans: 89, 142, 89
Ionic compounds do not have: (1) Hard and brittle nature (2) High melting and boiling point (3) Directional properties (4) Soluble in polar solvents Ans: Direction
describe the various types of velocities?
Monosaccharides - Biomolecules These are very simple one unit non-hydrolysable sugars. They have the common formula C n H 2n O n where n changes from 3 to 9 carbon molecules.
Which among the following species have the same number of electrons in its outermost as well as penultimate shell: (1) Mg 2+ (2) O 2-
Calculate the standard potentials of the Ag 5 and Ag 10 nanoclusters. Define the change in standard potential of silver nanoclusters with particle sizes ranging from very sma
Which one of the following explains light both as a stream of particles and as wave motion: (1) Diffraction (2) γ= h/p (3) Interference (4) Photoelectric effect
MOLE CONCEPT
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