The antibiotic thiarubrine-A was discovered by studying the feeding habits of wild chimpanzees in Tanzania. The structure of thiarubrine-A is   How many σ bonds are in this molecule?

Which of these molecules have an odd number of valence electrons: NO2, SCl2, NH3, NO3?

Bond Enthalpy When atoms of the hypothetical element X are placed together, they rapidly undergo reaction to form the X2 molecule: X(g)+X(g)X2(g) a Would you predict that this reaction is exothermic or endothermic? Explain. b Is the bond enthalpy of X2 a positive or a negative quantity? Why? c Suppose H for the reaction is 500 kJ/mol. Estimate the bond enthalpy of the X2 molecule. d Another hypothetical molecular compound, Y2(g), has a bond enthalpy of 750 kJ/mol, and the molecular compound XY(g) has a bond enthalpy of 1500 kJ/mol. Using bond enthalpy information, calculate H for the following reaction. X2(g)+Y2(g)2XY(g) e Given the following information, as well as the information previously presented, predict whether or not the hypothetical ionic compound AX is likely to form. In this compound, A forms the A+ cation, and X forms the X anion. Be sure to justify your answer. Reaction: A(g)+12X2(g)AX(s)The first ionization energy of A(g) is 400 kJ/mol. The electron affinity of X(g) is 525 kJ/mol. The lattice energy of AX(s) is 100 kJ/mol. f If you predicted that no ionic compound would form from the reaction in Part e, what minimum amount of AX(s) lattice energy might lead to compound formation?

What aspect of the following Lewis structure indicates that the concept of coordinate covalency is needed to explain the bonding in the molecule?

Hydrogen cyanide can be catalytically reduced with hydrogen to form methylamine. Use Lewis structures and bond energies to determine ΔH°rxn for HCN(g) + 2 H2(g) ⟶ CH3NH2(g)

Based on average bond enthalpies, would you expect a photon capable ofdissociating a C¬Cl bond to have sufficient energy to dissociate a C¬Br bond?

What is the bond energy calculation for C6H6 and 3h2 gives C6H12 in chemistry?

Which of the following bonds are polar? (a) B¬F,(b) Cl¬Cl, (c) Se¬O, (d) H¬I. Which is the moreelectronegative atom in each polar bond?

carbon tetrachloride was formerly used in fire extinguishers for electrical fires.it is no longer used for this purpose because of the formation of the toxic gas phosgene,CL2CO.wRITE THE LEWIS STRUCTURES for the methane and ethane molecules.

Chloroform, also called trichloromethane, (CHCl₃) is an important laboratory solvent with a relatively high vapor pressure at room temperature. Draw the Lewis structure of CHCl₃ and then determine the ideal bonding angle(s) for the Cl-C-Cl bond(s).