a) Calculate the packing factor of SiC unit cell (a zinc blende structure material) b) Calculate the packing factor of Cu, a FCC metal. c) Compare the packing factor of SiC and Cu and explain why it makes sense in terms of bonding.

Why are the trends and exceptions to the trends in ionization energy observed?

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.