QUESTION 1

Magnesium chloride (MgCl₂) dissolves completely in water. What is the molarity of the Mg²⁺(aq) cation in a 0.00500 M MgCl₂(aq) solution? (3 significant digits, units M)

1 points   

QUESTION 2

What is the molarity of Cl^-(aq) anion in the same solution as Question 1? (3 significant digits, units M)

1 points   

QUESTION 3

The parts per million (ppm) unit can be expressed as mg solute per liter solution (mg/L) for dilute aqueous solutions. Convert the Mg²⁺(aq)concentration from Question 1 into units of ppm. Use the molecular weight of the ion in the conversion. (Round to 3 significant digits, units ppm)

1 points   

QUESTION 4

Convert the Cl^-(aq) concentration from Question 2 into units of ppm. (Round to 3 significant digits, units ppm)

1 points   

QUESTION 5

How many grams of Mg²⁺(aq) are contained in 100.0 g of 0.00500 M MgCl₂(aq) solution? Assume the solution density is 1.0 g/mL, like water. (Round to 3 significant digits, unit g)

1 points   

QUESTION 6

What is the % by mass of Mg²⁺(aq) in the solution from Question 5? (Round to 3 significant digits, unit %)

1 points   

QUESTION 7

Questions 7 through 10 are linked together. A solution of red dye #40 was made with a concentration of 0.000440 M. Use Beer's Law, A = ebcwhere c stands for the concentration, to calculate the absorbance (A) if the value of the molar absorptivity (e) is 1700 Lmol^-1cm^-1 and the cell length (b, the diameter of the vial) is 2 cm. (Use 4 significant digits, no units)

1 points   

QUESTION 8

A student diluted the original 0.000440 M red dye solution (from Question 7) by measuring 25.00 mL with a pipet into a 100.0 mL volumetric flask and then adding water up to the line on the flask. Calculate the new concentration of the diluted solution. (Round to 3 significant digits, unit M)

1 points   

QUESTION 9

The absorbance was 0.388 when the student's diluted solution (from Question 8) was measured in the Microlab spectrometer. Use the e and b values from Question 7 to calculate the actual concentration of the diluted solution. (Round to 3 significant digits, unit M)

1 points   

QUESTION 10

The student desires a concentration of 0.000044 M, exactly one tenth of the original red dye solution strength. What volume of the original 0.000440 M solution should be measured into a 100.0 volumetric flask, to be diluted with water up to the line of the flask? (3 significant digits, unit mL)

Please answer and explain reasoning for each part

1. When food is cooked in a pressure cooker,
   1. why is it very important to cool the container with cold water before attempting to remove the lid? Explain your reasoning.
   2. b. would you dare to place your bare hand about 1 foot above the steam coming out of the cooker’s vent pipe? Why, or why not?
   3. c. would you dare to place your bare hand about 1 inch above the steam coming out of the cooker’s vent pipe? Why, or why not?

1. For any good that could potentially be provided by a private firm, the degree of rivalness can be measured by the rivalness ratio SMC/AC. a.[5] How must SMC be defined in order for this rivalness ratio to be able to measure the rivalness of goods that are purely private and also goods that are shareable and nearly purely public? Explain. b.[7] Describe two different benefits of using the rivalness ratio instead of using the SMC of a good to measure the rivalness of that good. c.[5] What is the most likely reason that during a typical three year period the private marginal cost of electricity production fueled by burning coal averages about half of the average cost? d.[12] Use information from the N4 notes, from class and from part c to give your best estimate of the rivalness ratio of each of the following goods. Justify your estimate and explain why it uses the definition of SMC you gave in part a: (d1) an iPhone X during the year that started on February 20, 2017 (about half a year before commercial production of the iPhone X started) and ended on Feb. 20, 2018; (d2) an ebook during a one year period starting 2 months before it can first be downloaded; (d3) electricity produced by burning coal in the US during a 3 year period.

You wish to use your skills to prepare another ester, ethyl isobutyrate (butterscotch flavoring). Provide the following for the reaction to prepare ethyl isobutyrate.

(2 points) Using ChemDraw, provide a balanced reaction for the ester you chose above.

(2 points) Provide three specific ways whereby Le Châtélier’s principle may be applied to this equilibrium to drive the reaction completely to the desired ester.

(1 point)   Explain which reagent you would choose to use in excess and provide a rationale.

(2 points) Using ChemDraw, provide a step‐by‐step mechanism for the ester you chose above.

(4 points) If you started with 7.50 g of your chosen carboxylic acid for the ester you chose to prepare, then how much of the other reagent is needed to bring the reaction about?

As vice president of sales for a rapidly growing company, you are grappling with the question of expanding the size of your direct sales force (from its current level of 60 national salespeople). You are considering hiring from 5 to 10 additional personnel.

sing hypotherical numbers, please explain (show work on excel):

a)How would you estimate the additional dollar cost of each additional salesperson?

b) Based on your company’s past sales experience, how would you estimate the expected net revenue generated by an additional salesperson? (Be specific about the information you might use to derive this estimate.)

c) How would you use these cost and revenue estimates to determine whether a sales force increase (or possibly a decrease) is warranted?

For which of the following taxes is there a ceiling on the amount of employee annual earnings subject to the​ tax?

A.

FICAminus−OASDI

Your answer is not correct.

B.

State unemployment taxes

C.

Federal unemployment taxes

D.

All of these answers are correct.

The correct answer is D

Explain:

At least 300 words. Our system will use turn it in to check the work, so please make sure to use your own words.

please do not use handwriting, I always have trouble to read the handwriting

Create a list of 10 topics you can talk about in a TED-style like talk of 5 minutes or less. These could be lessons you've learned in your career or interests you've curated as you experience life.

Share the list below in a prompt and then talk about which one you would be most excited to talk about in front of the class. This could also be the one that gave you goosebumps when you wrote it down!

Describe why you are passionate about this topic.

What is psychological disorder and how do psychological approaches of psychoanalysis, humanism, and behavioralism explain abnormal behavior?

Why are clinical assessment and diagnosis?

Please explain your answers and use examples.

Include supportive evidence; such as direct applicable experience and expert sources.

Employee Health Insurance Plans

Part I

Consider the four health plans below with an eye to choosing one to offer to the company's employees. Assume that the health plans and their annual per employee premiums are as follows:

The employer will pay 80% of the premium for individual coverage, and the employee will pay the remaining 20% as well as the entire additional premium for family coverage. (The premiums listed above, while realistic in magnitude, are hypothetical and computed solely for the purpose of this project.) All of the plans are managed care plans. Assume that the benefit package is the same across all plans, so there is no difference between them in what services are covered.

In addition to the above data, click here to view and investigate the Online Report on Quality Performance Results in New York State, the latest report card issued by the New York State Department of Health, 2013, and incorporate the information into your evaluation.

You can view the various categories of measures on which health plans are rated (e.g., Access to Care, Adult Living with Illness, etc.). Click each link for a summary chart that presents the performance (usually as a percentage score) of each plan in the group on the relevant measures and how each plan compares to regional and statewide scores.

Submit a 2-page analysis in a Microsoft Word document that outlines the plan you selected and why. Generally, you would select the plan with the highest score, but if you chose a plan with a lower score, explain why. Include the following elements in your analysis:

Explain which factors (e.g., price and/or performance measures) were most important to your choice of plan and how you derived the weights for each factor you used.

Indicate, on a scale of 1 to 10, how comfortable or confident you are that you made the right choice, with 10 being most confident.

Part II

You need to use the multiattribute utility (MAU) technique to respond to the following questions. Although the technique can be performed with pencil and paper, it is recommended you use a Microsoft Excel to do the various calculations involved.

Click the following links to access the information on using the MAU technique:

MAU Model

MAU Example

Compare your level of confidence at the time you completed Part I to your confidence level for Part II, when you used this decision aid.

Was it helpful? What were its advantages and disadvantages?

Did it make the decision harder to make or easier to justify?

Support your responses with examples.

Cite any sources in APA format.