Molecular Chemistry

4) Calculate the pH and pOH of a 0.001 M solution of sodium hydroxide (NaOH) at25 C.

2 - Formulas of lonic Compounds (5pts) Complete the table with the positive ion, negative ion, and the formula for the compounds. Use the subscript (X₂) and superscript (X²) buttons as needed.

8. Suppose we used the particle in a three-dimensional cubic box as a crude model for the electron in a hydrogen atom. What value of 1 (the width of the box) would you have to use so that the energy of transition between the ground state (111) and the first excited energy level (112, 211 or 121) transition for this model would be the same as the exact value determined for the n = 1 → 2 from the Rydberg formula En = 2.1799 x 10-18/n²? Is this a reasonable value for the size of a hydrogen atom?

3- Names of lonic Compounds (5pts) Complete the table with the positive ion, negative ion, and the name for the compounds. Use the subscript (X₂) and superscript (X2) buttons as needed.

2) Advances in molecular machinery have afforded various approaches toward performing macroscopic like tasks at the molecular level. Fort o mimick the motion of vehicles at the molecular level nano vehicles have been designed and developed. Nano worms are a design of a nano vehicles that mmick caterpillar-like motion. a) Is this approach toward molecular machines a bottom-upor top-down approach? Why? b) Why dould these molecules exhibit caterpillar-like motion? c) Would there be a directional motion of these molecules on a surface? If yes indicate the-expected direction of motion via arrows. d) Why does the motion of these molecules need to be studied on a surface?

69. Write the electron configuration and the boiling point constant is 0.512 °C/m.

You are expected to write a lab report on the experiment assigned to you by the module leader. The experiment could be one of the following that you have performed in Weeks 2 to 5 of the lab. 1) Residence time distribution for Tanks in Series 2) Degree of conversion and the reaction rate constant in a CSTR 3) Rate of settling in a vertical column 4) Level control in a liquid tank