Explain the concept of Racemic Mixtures ?

?CaSO4+AlCl3→CaCl2+Al2(SO4)3     Whats ?

6. Which of the following structure(s) is/are chiral? Br Br Br 1 Br 2 Br Br 3 Br Br 4

1. Calculate the Coulombic (ionic) interaction energy between atoms for the C=O ∙∙∙H-N hydrogen bond in a peptide at a distance of 1.5Å in units of kJ/mol. Assume that the partial charge on O is −0.434, the partial charge on H is +0.417 and the permittivity of the protein environment is 6.  2. The dipole moment of an individual peptide group is approximately 3.46 D. Assuming that the dipoles line up linearly estimate the energy of interaction (in kJ.mol) of the hydrogen bond in Q1 using a dipole-dipole model.

Tramisol (shown below) is an anthelmintic used to control intestinal and lung worms in sheep and cattle. How many asymmetric centers are present in this structure? S ·N· N

Which of the following addition reactions is not likely to occur? Explain

What is the Lewis Structure of CH2Se, the steric number, the electron pair geometry, the molecular geometry, and how many double bonds does it have?