Assign an oxidation state to each element or ion:

Part A V Express your answer as a signed integer.

Part B Mg2+ Express your answer as a signed integer.

Part C Cr3+

Assign an oxidation state to each atom in each polyatomic ion.

Part B Express your answer as a signed integer. oxidation state of O:

Part C OH− Express your answer as a signed integer. oxidation state of O:

Part D Express your answer as a signed integer. oxidation state of H:

Part E NO3− Express your answer as a signed integer. oxidation state of N:

Part F Express your answer as a signed integer. oxidation state of O:

Part G NO2− Express your answer as a signed integer. oxidation state of N:

Part H Express your answer as a signed integer. oxidation state of O:

Part A Use oxidation states to identify the oxidizing agent and the reducing agent in the following redox reaction.

2Na(s)+2H2O(l)→2NaOH(aq)+H2(g)

Express your answer as a chemical formula. reducing agent: S

Part B Express your answer as a chemical formula. oxidizing agent:

exercise 5.2 Develop Your Own Commercial

Imagine that you are your own “product.” You have to sell yourself and your potential contributions to a potential employer or buyer. What would you sell? For example, what are some of the strengths you bring to the table? (Hint: Review the section in this chapter on seeing yourself as a “brand.”)

On a separate sheet of paper, spend 5–10 minutes free writing and brainstorming about you as a commercial. Next, what action or step can you take to get closer to developing your product? For example, if you want to own your own business, what action can you take now to move closer to that goal?

exercise 5.3 30-Second Elevator Pitch

Did you know that in an interview situation, the interviewer usually sizes up the job candidate in 30 seconds or less? And he or she usually has a firm impression of the candidate within a couple of minutes of meeting the person. So, what does that mean for you? You have to make a strong first impression. It is important to develop and practise your pitch or story. If you have only 30 seconds to make a good impression, what do you say about yourself? What information do you include (or exclude)? This pitch takes practice.

On a separate sheet of paper, write a rough script for your 30-second pitch. Next, practise it on your own or in front of family members. (Practise in front of a mirror if you have some inhibitions about public speaking.) How did that feel? Were you more comfortable the more you practised? This is a skill that takes time and practice. Remember: Even if you are not employed in sales, you are always selling yourself in some way.

You buy an island and start a country! Now it is time to establish a tax. Explain ONE consideration not ALREADY mentioned by your classmates that must be considered when establishing a tax. Do not consider how much you'll spend or on what- only how you'll collect tax money. I have about 10 things to consider when designing a tax, so if we run out of ideas then you may use an idea a second time so long as you NAME the classmates who identified it first.

1. A researcher has obtained the number of hours worked per week during the semester for a sample of 10 students:

21, 33, 26, 16, 32, 20, 29, 20, 19, 20

Use the data set to compute the mean, the median, the mode, the range, the sample variance, the sample standard deviation, the 10th percentile, The sum of the squared deviations of each value of X from the mean. Briefly explain what information about the variable is provided by your answers for the mean, median, mode, and standard deviation.

The long-term success of a company is of particular interest to both internal and external users of financial statements. The long-term success can be highlighted through the types of assets they have along with the Retained earnings of the company. The liabilities are however a direct reduction of these two items. How would you go about indicating to investors that all account balances are valid and free from potential errors? What types of financial records and information would you use to support your claims? Explain. (Please give a thorough explanation.)

Photosynthesis Homework                                                             Name:_______________________

DIRECTIONS: Use Chapter 10 to help answer the questions and fill in the table below. Bring to class completed at the beginning of lecture.

1. Briefly describe the ‘big picture’ of what photosynthesis is all about. In your description, write out the chemical formula for photosynthesis and explain how each compound in the formula is related to the ‘big picture’.

2. Describe the specific purpose of the Light Capturing Reaction and the Calvin Cycle.

3. Fill in the descriptions of the table below.

State a data structure that is suitable for storing
(i) the words in a dictionary to facilitate searching
(ii) the set of folders you have in your computer
Explain your choices.

Select the lightest W section to support a uniform distributed load WD=0.5 kip/ft,

W=1.4 kip/ft in addition to the section self weight.    The element will be simple

supported with a span of 24 ft. Use A36 (Deflection does not require to be verified).

Ten individuals went on a low-fat diet for 12 weeks to lower their cholesterol. The data are recorded in the table below. Do you think that their cholesterol levels were significantly lowered? Conduct a hypothesis test at the 5% level.

1. In words, state what your random variable X_d  represents.

a. X_d represents the total difference in cholesterol levels before and after the diet.

b. X_d represents the difference in the average cholesterol level before and after the diet.    

c. X_d represents the average difference in the cholesterol level before and after the diet.

d. X_d represents the average cholesterol level of the 10 individuals.

2.State the distribution to use for the test. (Enter your answer in the form z or t_df where df is the degrees of freedom.)

3.What is the test statistic? (If using the z distribution round your answer to two decimal places, and if using the t distribution round your answer to three decimal places.)

4.What is the p-value?

5.Explain how you determined which distribution to use.

a. The standard normal distribution will be used because the samples are independent and the population standard deviation is known.

b. The t-distribution will be used because the samples are dependent.    

c. The t-distribution will be used because the samples are independent and the population standard deviation is not known.

d. The standard normal distribution will be used because the samples involve the difference in proportions.