30.The iron content of foods can be determined by dissolving them in acid (forming ),reducing the ir
32. For how many of B2, C2, P2, and F2 does bond order decrease if one electron is removed from then
34. Of the three cubic unit cells, which lattice packing leaves the least amount of free space in th
35. A liquid placed in a closed container will cvaporate until equilibrium is reached. At equilibriu
27. Which of the following reactions should be spontaneous under standard conditions? (A)I and Il ar
31.For the hypothetical reaction .For this reaction, if the value of x is 4, then the value of y =__
28. Consider the following table of standard reduction potentials:Which substance is the strongest r
41.________ isomers and ________ isomers are classes of structural isomers.(A) Geometric, optical (B
42. How many of the following molecules exist?I: methane, II: cycloethane, Il: isopropyne, IV: neobu
43. The overall shape of a protein is maintained by(A) hydrogen bonding (B) ionic bonds (C) dipole-d