4.

a. State Beer’s Law. What is meant by the statement that Beer’s Law is a limiting law?

b. Describe two apparent deviations from Beer’s Law and indicate how the deviation specifically affects the calibration curve.

c. Phosphate ions do not absorb radiation in the visible region of the electromagnetic spectrum. Nonetheless, Phosphate ions can be detected quantitatively utilizing absorption spectrophotometry in the visible region. Explain.

d. Why can’t an ultraviolet spectrophotometer be used to obtain infrared spectra? Be specific.

e. State three factors that contribute to photometric error.

f. Why is fluorescence spectroscopy more sensitive than absorbance spectroscopy?

g. Why must there be a vertical and horizontal adjustment of the hollow cathode lamp position with respect to the flame for an analysis using atomic absorption spectroscopy?

h. Why is a narrow slit width important for qualitative analysis, but not as critical for quantitative analysis?

i. What is the advantage of using a double beam instrument over a single beam instrument?

j. The molar absorptivity of p-nitrophenol at 407 nm is shown in the table two pH’s. What does the information tell you about p-nitrophenol?

                        pH                   molar absorptivity

                        4.0                             330

                        9.0                         18330

k. The temperature of the plasma used in ICP is about twice as high as the temperature of a flame, yet there are few ionization problems associated with the use of an ICP. Explain.

l. Use an energy diagram to illustrate the change(s) in energy that an electron undergoes when fluorescence is observed for a molecule. Explain the energy diagram.

m. An acetylene/air flame (2450 K) can be used to analyze a sample containing Pd by atomic absorption spectroscopy whereas the analysis of V requires an acetylene/nitrous oxide flame (3000K). Explain.

How can health administrators and policymakers use various data and measures (e.g. health status and/or service utilization) to improve the healthcare system?

*Please explain in detail and use accurate scholarly information *Please cite all references used. Thank you!

1. Provide information about Distance-vector routing protocols.

2. Provide information about Link-state routing protocols.

3. Provide some troubleshooting commands and explain about the usage.

Use the media articles, official websites and government reports to describe your planning and controlling issue related to the Australian bushfires (3-5 paragraphs). Maximum 400 words. Be sure to explain how the issue you identified relates to planning and controlling. This section must not contain more than 10% of direct quotes from the media articles and other documents (i.e. 400 words).

Discuss your understanding of Enterprise DCF and Discounted Economic Profit models. Explain what is similar and difference about them? What is the rationale for each? What are the benefits? Why is each model important?

What would you consider when deciding what to use?

F. Explain (in as much detail that you wish including nuF. Explain (in as much detail that you wish including numerical analysis and graphs) the operating income view or the neo-classical approach in regards to the relationship between the WACC and the value of the firm.

merical analysis and graphs) the operating income view or the neo-classical approach in regards to the relationship between the WACC and the value of the firm.

Does Mars, Incorporated use the same percentage of red candies in its plain and peanut varieties? A random sample of 200 plain M & Ms contained 42 red candies and a random sample of 240 peanut M & Ms contained 68 red candies. Assume that the samples are independent.

1. Construct and interpret a 95% confidence interval for the difference between the parameters of interest.

2. Do the data indicate a difference in the percentage of red candies for plain and peanut M & Ms? Use .

3. Do the data indicate that plain M & M candies contain a smaller percentage of red candies? Use .

You are to write to either the President (on fiscal policy) or to the Chair of the Federal Reserve (on monetary policy) describing a specific policy action that you believe should be taken at this moment in time (e.g., lower taxes or buy bonds) and explain why you would take the action (what is currently happening in the economy and what will this action accomplish?). Your post should be between 200-400 words. You can learn about the current state of our economy by consulting newspapers or news websites.

write to either the President (on fiscal policy) or to the Chair of the Federal Reserve (on monetary policy) describing a specific policy action that you believe should be taken at this moment in time (e.g., lower taxes or buy bonds) and explain why you would take the action (what is currently happening in the economy and what will this action accomplish?). Your thoughtful post (of between 200 - 400 words) You can learn about the current state of our economy by consulting newspapers or news websites.