The absorption spectrum of an atom consists of the wavelengths 200 nm, 300nm, and 500 nm.

a) Draw the atom's energy-level diagram.

b) What wavelengths are seen in the atom's emission spectrum?

(Please show all the steps and calculations with simple explanation. Thank you)

A 200.00mL sample of 1.000M nitric acid is added to a carbonate buffer solution prepared by mixing 1.00mol Na2CO3 and 1.000 mol NAHCO3 and adding water to make a 1.000L solution. What is the resulting pH? (pKa of HCO3- is 10.32)

Summarize the case- "Tesco: From Troubles to Turnaround". Explain what other companies should learn from Tesco's mistakes?

1. A change in which of the following would cause the LM curve to shift? To rotate? To both shift and rotate? Which do not affect the position or slope of the LM curve?
   1. nominal money supply
   2. responsiveness of the demand for money to the interest rate
   3. responsiveness of the demand for money to income
   4. business and consumer confidence
   5. interest rate (r)
   6. price level (P)

c++

Write a program that opens a file, reads records into a container of data structures, and prints out the sum in order.
You can use Vectors to contain the data structures.

1. Create a data structure to represent the record ==> struct Cost in cost.h
2. Write a function called ==> parse_account, that parses one (string) record from a file, and
populates a data structure with that data.
3. Write a function called sum_accounts, that when passed a container of structures, returns
a double representing the sum of the amounts in those structures.
4. Create a main program
     a) Create an appropriate container of data structures
     b) Open the accounts file (costfile.txt)
     c) While you can read a line from the file without error
          Call parse_account, which returns a data structure.
          Add the returned data structure to the container (using, pushToV)
    d) Call sum_accounts to determine the amount of money represented
    e) Print a message and the result.

Try this with some sample data, such as the following lines in costfile.dat
You may add or create your own data file to test the program with:
You can start with the data in a text file and then write the data in a binary file, this
way you practice with both file types.

Description      Amount    Item number
Pass_Go           200.00          135
Reading_RR       50.00          136
Connecticut      120.00          137
Chance              25.00          138

- Use input file to read the above Data
- Use header file for the data structure definition
- Use Multiple Source Files for function definitions and Application, each in separate file (.cpp file)

A) A 50.0-mL volume of 0.15 M HBr is titrated with 0.25 M KOH. Calculate the pH after the addition of 19.0mL of KOH.

Express your answer numerically.

B) A 75.0-mL volume of 0.200 M NH3 (Kb=1.8�10?5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 13.0mL of HNO3.

C) A 52.0-mL volume of 0.35 M CH3COOH (Ka=1.8�10?5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 23.0mL of NaOH.

2. Calculating costs

Becky is working for an advertising firm making $50,000 per year but considers starting her own advertising company. Becky has determined that to launch the business, she needs to invest $80,000 of her own funds. The annual cost of running the business will include $75,000 for the rent of the office space, $190,000 for employee wages, and $6,000 for materials and utilities. Becky plans to manage the business, which means that she will have to quit her current job. Suppose that the interest rate (or rate of return) on investments in the economy is 5%.

Becky's total implicit cost per year is _____ .

Becky's total cost per year is _____ .

3. Definition of economic costs

Nick lives in San Francisco and runs a business that sells guitars. In an average year, he receives $722,000 from selling guitars. Of this sales revenue, he must pay the manufacturer a wholesale cost of $422,000; he also pays wages and utility bills totaling $268,000. He owns his showroom; if he chooses to rent it out, he will receive $2,000 in rent per year. Assume that the value of this showroom does not depreciate over the year. Also, if Nick does not operate this guitar business, he can work as a paralegal and receive an annual salary of $21,000 with no additional monetary costs. No other costs are incurred in running this guitar business.

Identify each of Nick's costs in the following table as either an implicit cost or an explicit cost of selling guitars.

Complete the following table by determining Nick's accounting and economic profit of his guitar business.

Alternatively, the economic profit he would earn as a paralegal would be

.

If Nick's goal is to maximize his economic profit, he _____   stay in the guitar business.

True or false: Nick is not earning a normal profit because his profit is positive.

False

True

What do these four forecasting techniques mean and when should I use them?

1) Moving Average Technique

2) Simple Linear Regression Technique

3) Multiple Linear Regression Analysis Technique

4) Exponential Smoothing Forecasting Technique

Grexit or Not?

When the euro was introduced in 1999, Greece was conspicuously absent from the list of the EU member countries adopting the common currency. The country was not ready. In a few short years, however, European leaders, probably motivated by their political agenda, allowed Greece to join the euro club in 2001 although it was not entirely clear if the country satisfied the entry conditions. In any case, joining the euro club allowed the Greek government, households, and firms to gain easy access to plentiful funds at historically low interest rates, ushering in a period of robust credit growth. For a while, Greeks enjoyed what seemed to be the fruits of becoming a full-fledged member of Europe.

In December 2009, however, the new Greek government revealed that the gov- ernment budget deficit would be 12.7 percent for 2009, not 3.7 percent as previously announced by the outgoing government, far exceeding the EU’s convergence guideline of keeping the budget deficit below 3.0 percent of the GDP. As the true picture of the government finance became known, the prices of Greek government bonds began to fall sharply, prompting panic selling among international investors, threatening the sov- ereign defaults.

Several years into the crisis, the Greek government debt stands at around 180 percent of GDP and the jobless rate among youth is above 50 percent. The country’s GDP declined by about 25 percent. Severe austerity measures, such as sharply raised taxes and much reduced pension benefits, were imposed on Greece as conditions for the bail- outs arranged by the EU, IMF, and the European Central Bank. In addition, people were allowed to have only restricted access to their bank deposits, to prevent bank runs. Opin- ion polls indicate that the majority of people in Germany, the main creditor nation for Greece, prefer the Greek exit from the euro zone, popularly called Grexit, while some people in Greece are demanding Grexit themselves and restoration of the national cur- rency, the drachma.

Discussion points: (i) the root causes of the Greek predicaments, (ii) the costs and ben- efits of staying in the euro zone for Greece, (iii) the measures that need to be taken to keep Greece in the euro zone in the long run if that is desirable, (iv) If you were a disinter- ested outside advisor for the Greek government, would you advise Grexit or not? Why or why not?

In the Grossman model, is there a graph that best fits the thrifty phenotype hypothesis?

Assume we start with a total government debt of $0. What happens at the end of each year? Hint if I borrow $10 million then my debt is equal to $10 million.

In year 1 the government spends $405 million and collects $356 million in taxes. Public saving in year 1 is equal to $__million and the government debt is equal to $ __ million.

In year 2 the government spends $390 million and collects $360 million in taxes. Public saving in year 2 is equal to $ __million and the government debt is now equal to $ __million.

In year 3 the government spends $360 million and collects $358 million in taxes. Public saving in year 3 is equal to $ __ million and the government debt is now equal to $ __ million.

In year 4 the government spends $405 million and collects $425 million in taxes. Public saving in year 4 is equal to $__ million and the government debt is now equal to $ __million.

Complete combustion of 2.50g of a hydrocarbon produced 8.14g of CO2 and 2.50g of H2O. What is the empirical formula for the hydrocarbon? Insert subscripts as necessary.

Write a JAVA program that reads a text file.

Text file contains three lines.

Place each line in an array bucket location.

Add to the end of the array list.

Print the array.

The balance sheet shows your assets, liabilities, and equity of the business and is a key financial statement to analyze. If a business had cash of $200,000, accounts receivable of $500,000, a loan payable of $1,000,000, and equity of -$300,000, then what would this indicate about the business? What would be your overall thoughts on the health of this company and how could you improve its financial health? Would you want to invest in this company? Lead this company? Why or why not?

what are the arrhenius definitions for an acid and base? give a chemical equation to demonstrate a strong acid and a weak acid