Would atomic absorption be a useful technique for determining concentration of benzene in a water sample? Why or why not?

A solution contains [Ba2+] = 5.0 × 10-5 M, [Ag+] = 3.0 × 10-5 M, and [Zn2+] = 2.0 × 10-7 M. Sodium oxalate is slowly added so that [C2O42-] increases. Salt BaC2O4 ZnC2O4 Ag2C2O4 Ksp 1.5 × 10-8 1.35 × 10-9 1.1 × 10-11 What is the concentration of the first cation to precipitate when the second cation just begins to precipitate?

I need to get the MATLAB calculation for this but I can't. I past the exact same thing into MATLAB R2016b Editor but it gives me error. Please write your answer and telling what is wrong with the code. What should I add or remove in this code to get the answer and calculations. Please explain step by step this is the first time ever that I am using MATLAB. Thanks

I need to get the MATLAB calculation for this but I can't. I past the exact same thing into MATLAB R2016b Editor but it gives me error. Please write your answer and telling what is wrong with the code. What should I add or remove in this code to get the answer and calculations. Please explain step by step this is the first time ever that I am using MATLAB.

Thanks

>> V=5; R1=270; R2=470; R3=560; R4=220; R5=330;

>>Req1= R4+R5;

>>Req2=1/((1/R1)+(1/R2)+(1/R3));

>>Ieq=V/(Req1+Req2);

>>Veq1=Ieq*Req1;

>>Veq2=Ieq*Req2;

>>V1=Veq1*(R4/(R4+R5));

>>V2=Veq1*(R5/(R4+R5));

>>V3=Veq2;

>>I1=V3/R1;

>>I2=V3/R2;

>>I3=V3/R3;

In February 2017, Sheridan Construction signed a contract and commenced construction on a parking garage. The total contract price was $90.9 million, and was expected to be completed in July 2021 at a total estimated cost of $82.9 million. Payment by the customer was to be made in several stages, based on significant events and dates throughout the construction timeline. The customer was to have control over the parking garage and was able to make major changes to the project during the construction process. Sheridan’s year-end was September 30.

By the end of September, 2017, Sheridan had incurred $12,435,000 in costs and had invoiced $10,100,000 in progress billings. $9,100,000 of the progress billings had been collected.

By September 30, 2018, Sheridan had incurred $51,415,000 in total costs and had invoiced $45,200,000 in progress billings, including the progress billings in 2017. Of the total billings, $30,400,000 in total had been collected. Also, Sheridan reviewed its cost estimates on the project, and now believed the parking garage would cost $79.1 million in total to complete.

Prepare all journal entries required for the year ended September 30, 2017. Use Accounts Payable for costs incurred to date. (Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts.)

Prepare all journal entries required for the year ended September 30, 2018. Use Accounts Payable for costs incurred to date. (Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter 0 for the amounts.)

In 2017, Samsung regained control as the leader in the worldwide smart phone market. The competitive landscape has change significantly with the rise of brands such as OPPO and Vivo in smart phone segment. Huawei, in particular, poses a big threat to Samsung

1. Discuss the five (5) stages of product life cycle for Samsung.

Optical fibers use reflection to guide light through a channel. Explain, in your own words, how optical fibers are made in order for the light to be reflected off the cladding instead of refracted into it?

What is the role of professional judgement in accounting and two implications on the users of accounting information if the professional judgment has not been made in the most appropriate approach.

Kubin Company’s relevant range of production is 26,000 to 35,500 units. When it produces and sells 30,750 units, its average costs per unit are as follows:

Required:

1. For financial accounting purposes, what is the total amount of product costs incurred to make 30,750 units?

2. For financial accounting purposes, what is the total amount of period costs incurred to sell 30,750 units?

3. For financial accounting purposes, what is the total amount of product costs incurred to make 35,500 units?

4. For financial accounting purposes, what is the total amount of period costs incurred to sell 26,000 units?

(For all requirements, do not round intermediate calculations.)

Think of an organization of your choice, which involves in trading mobile phones. Explain the various approaches used in segmenting markets and also describe how the marketing mix is used to position your products in a market

A 30.0?F capacitor is charged to 210?C and then connected across the ends of a 4.20mH inductor.

A.Find the maximum current in the inductor.

B.At the instant the current in the inductor is maximal, how much charge is on the capacitor plates?

You are a senior manager at Nittany Aircraft and have been authorized to spend up to $550,000 for projects. The three projects you are considering have the following characteristics:

Project A: Initial investment of $420,000. Cash flow of $195,000 at year 1 and $235,000 at year 2. This is a plant expansion project, where the required rate of return is 13 %.

Project B: Initial investment of $210,000. Cash flow of $180,000 at year 1 and $140,000 at year 2. This is a new product development project, where the required rate of return is 16 %.

Project C: Initial investment of $165,000. Cash flow of $145,000 at year 1 and $90,000 at year 2. This is a market expansion project, where the required rate of return is 16 %.     

Assume the corporate discount rate is 17 %.

What is the IRR of project A? (Report answer in percentage terms and round to 2 decimal places. Do not round intermediate calculations)

What is the NPV of project A? (Round answer to 2 decimal places. Do not round intermediate calculations)

What is the PI of project A? (Round answer to 2 decimal places. Do not round intermediate calculations)

What is the IRR of project B? (Report answer in percentage terms and round to 2 decimal places. Do not round intermediate calculations)

What is the NPV of project B? (Round answer to 2 decimal places. Do not round intermediate calculations)

What is the PI of project B? (Round answer to 2 decimal places. Do not round intermediate calculations)

What is the IRR of project C? (Report answer in percentage terms and round to 2 decimal places. Do not round intermediate calculations)

What is the NPV of project C? (Round answer to 2 decimal places. Do not round intermediate calculations)

What is the PI of project C? (Round answer to 2 decimal places. Do not round intermediate calculations)

What is the incremental IRR (aka, crossover point) between Project B & Project C? (Report answer in percentage terms and round to 2 decimal places. Do not round intermediate calculations)

2. Heat added to a substance goes partly into the translational kinetic energy of its molecules, which directly elevates temperature. For some substances, large proportions of heat also go into vibrations and rotations of the molecules. Discuss whether you’d expect materials in which a lot of energy goes into non-translational molecular motions to have a high or low specific heat capacity?

In your opinion, to be considered truly ‘ethical’ how should a retailer treat its employees? Give examples to support your arguments

The physical properties of soap depend on the very different water solubility of two ends of tghe same molecule. Normally, soap is the sodium salt of a long-chain carboxylic acid.

A. Explain, using structures and words, the observation that soap does not work properly in very low pH water, or hard water which has calcium and magnesium ions.

B. would a soap make from N,N,N-trimethyl octadecyl ammonium chloride (shown below) have the same problems as a long-chain carboxylic acid? Explain.

CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH2-N+H3 CL-