Shawn Tabrizi

Most popular questions and responses by Shawn Tabrizi
  1. Chemistry Lab

    Complete the table below: The hydrogen emission spectrum has four series (or sets) of lines named Balmer, Brackett, Paschen, and Lyman. Indicate the energy (infrared, ultraviolet, or visible), the nf value for each series, and all possible ni values up to

    asked on January 17, 2011
  2. Chemistry Lab

    Determine the ionization energy of a hydrogen atom (in kJ/mol) if the electron is in its ground state. (Hints: Use the Rydberg equation, remember E=hc for a single H atom, and R=109678x10–2nm–1 ) _____ kJ/mol Thanks :)

    asked on January 17, 2011
  3. CHEM 1LB

    Which of the following safety precautions is unnecessary for the 'Mass Percent of ASA' experiment? A. Safety goggles should be worn. B. Do not ingest the aspirin used in this experiment as it may be contaminated with other chemicals. C. The FeCl3solution

    asked on January 21, 2011
  4. Chemistry Lab

    Infrared, ultraviolet, and visible radiation are all part of the electromagnetic spectrum. Arrange the three types of radiation in order of increasing energy. Note: Use only infrared, ultraviolet, or visible for your answers. Lowest: ___

    asked on January 17, 2011
  5. Chemistry Lab

    Description of the process from problem one: Please help me fill in the blanks :) The _______ makes a transition from a _______ energy orbital to a _______ energy orbital resulting in the_______ of a photon.

    asked on January 17, 2011
  6. CHEM 1LB

    Which of the following is NOT true? A. The uncertain digit is estimated between the last two markings. B. Except for absorbance, most measurements contain significant figures and units. C. All numbers should be recorded from a digital readout. D. If an

    asked on January 21, 2011
  7. Chemistry Lab

    The Rydberg equation (1=Rni 2–Rnf 2) can be treated as a line equation. What is the value of nf as a function of the slope (m) and y-intercept(b)? A. mb B. –mb2 C. (mb)12 D. (–mb)12 E. (mb)12 F. None of these are correct. Thank you :)

    asked on January 17, 2011
  1. CHEM 1LB

    Thank you Dr. Bob!

    posted on January 21, 2011
  2. chemistry

    The answer is Lyman, nf=1

    posted on January 20, 2011