1.) For the chemical reaction 2 Al + 3 H 2 SO 4 ⟶ 3 H 2 + Al 2 ( SO 4 ) 3 what mass of hydrogen is produced from 1.97 mol of aluminum?

2.) Convert 1.77×1024 atoms of carbon to moles of carbon.

1.77×1024 atoms=

3.)

Consider the combustion reaction for octane (C8H18), which is a primary component of gasoline.

2C8H18+25O2⟶16CO2+18H2O

How many moles of CO2 are emitted into the atmosphere when 17.1 g C8H18 is burned?

4.) For the reaction

2KI+Pb(NO3)2⟶PbI2+2KNO3how many grams of lead(II) iodide, PbI₂, are produced from 89.7 g of potassium iodide, KI?

5.)For the reaction

2NaOH+H2SO4⟶Na2SO4+2H2O

how many grams of sulfuric acid, H₂SO₄, are needed to react completely with 33.1 g of sodium hydroxide, NaOH?

PLEASE HELP...

1. Baumol and Blinder Chapter 4 Test Yourself # 2, 3 2. Suppose the elasticity of demand equals 2.5. (Hint: write down the formula for ED first.) If the price rises by 10%, what happens to quantity demanded? Be precise! Is this a “large” or “small” change in quantity demanded? If price rises by 10%, will TR rise? Explain with reference to the formula for TR. 3. Suppose the government decided to tax bottled water. Using supply and demand analysis, what do you think will happen to P and to Q? Will Q change a lot or a little? Explain. Is the government “interested” in raising a lot of revenue with this tax? Explain. Book used: Microeconomics Principle and Policy By: William J. Baumol and Alan S. Blinder

2. Devos Inc. makes desks that are made up of 1 top, 2 sides, and 4 legs. We need to make at least 15,000 desks to fulfill the demand of our customers.

The costs are as follow:

Make the top - $7

Buy the top - $10

Make the side - $3

Buy the side - $5

Make a leg - $2

Buy a leg - $3

1) One top requires 4 feet of wood, one side requires 2 feet of wood, and one leg requires 1 foot of wood and we have 180,000 feet of wood available.

2) Each top takes 8 minutes to make a top, each side takes 3 minutes to make, and each leg takes 2 minutes to make. We have 300,000 minutes available.

3) Each top takes up 2 units of space, each side takes up 2 units of space, and each leg takes up .1 units of space before it is assembled in our inventory. We have 80,000 units of space available.

Answer the following using solver:

1. How many tops should we make? How many tops should we buy? How many sides should we make? How many sides should we buy? How many legs should we make? How many legs should we buy?
2. Without re-running Solver, what happens to our cost if we require that we buy at least one leg?
3. Without re-running solver, what happens to our cost if we need to make 16,000 tops (instead of 15,000)?

Assume that you are providing financial advice to a well-diversified Australian investor, Mr. Rex Sandilands, a full-time biology secondary school teacher and part-time wrestler. Mr. Sandilands is seeking to undertake further investment in any or all of the companies included on the following page, which are each included in the Australian Securities Exchange’s ASX 200 Index. To assist your investment decision-making process, you have been provided the following information:

• the forecast expected return on the Australian Stock Exchange’s ASX 200 Index will be approximately 10% over the next year

• on average, the ASX 200 Index has produced returns approximately 4% in excess of risk-free Australian securities

The relevant Australian companies under consideration are:

• Foxwedge Mining (beta of 1.2) having an expected rate of return of 11.5%

• Sirpinz Holdings (beta of 0.8) having an expected rate of return of 11.5%

• Galilee Trading (beta of 2.0) having an expected rate of return of 12.5%

Required:

1. Given the above information, what is the required rate of return for each of the companies discussed above?
2. In practice, beta values are available from public sources, either at no or at a nominal charge. If you did not however have access to these beta values as given in the question, briefly explain how would you determine such beta values for each of these companies?

Hint: What processes would you use to assess a beta value for each company? (Students should write no more than 100 words for this part of the question).

3. Using all of the information included in this question, would you recommend investment in any or all of the companies discussed above by Mr. Sandilands? Briefly justify your discussion using terminology understandable to Mr. Sandilands, given that, although he is a well-diversified investor, Mr. Sandilands has only a very introductory understanding of finance principles and theory. That is, provide Mr. Sandilands with a convincing argument in favour of / rejection of, the individual companies under consideration.

(Students should write no more than 150 words for this part of the question).

4. Regardless of the advice provided in part c) of this question, assume that Mr. Sandilands subsequently invested $360,000 in a portfolio of the relevant companies comprised as follows:

• Foxwedge Mining $180,000

• Sirpinz Holdings $145,000

• Galilee Trading    $35,000

Under these circumstances what would be Mr. Sandilands: i) portfolio required rate of return? and ii) portfolio beta?

5. Briefly comment on how you might use the calculations undertaken in part d) of this question to assist Mr. Sandilands in the future given his decision to invest in the portfolio. That is, having performed the calculations in part d) of this question, of what use are they as a decision-making tool?

(Students should write no more than 100 words for this part of the question).

6. What is the relevance in this question to the statement that; “Mr. Sandilands is a well-diversified Australian investor”? Hint: How does the above statement allow students to progress with the various calculations / discussion included in this question?

（对于这部分问题，学生应该写不超过75个单词）。（3分）

Consider the following time series data.

I need these written in shell code

1.nested loop. e.g. 1*2 + 2*3 + 3*4 + ...(n-1)*n. (Only nested loops)

2.Fibonacci numbers.

If p,p+2 are twin primes, prove 4((p−1)!+1)+p≡0 modp(p+2)

Consider the following virtual page reference sequence: page 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3. This indicates that these particular pages need to be accessed by the computer in the order shown. Consider each of the following 4 algorithm-frame combinations:

• LRU with 3 frames
• FIFO with 3 frames
• LRU with 4 frames
• FIFO with 4 frames

Print a copy of this page. For each of the 4 combinations, below, move from left to right as the virtual page numbers are requested in sequence. Put each virtual page into one of the frames by writing its number there (initially while empty frames remain, load them from top down). When all frames are already occupied by other pages, choose the right page to displace according to the applicable algorithm (LRU or FIFO) and mark the event with an F for Fault. (Do not count a fault when loading a missing page at a time when there is a frame unoccupied, in other words on the first 3 or 4 loads.) When finished, total the number of page faults and write it in where indicated.

Submit the printout. The assignment will be graded on 8 items: the 4 final page configuration figures at the extreme right (correct or incorrect), and the 4 page fault totals written (correct or incorrect). Please work carefully.

THREE Page Frames

Least-recently-used (LRU) method:

Number of page faults for LRU/3:                     

First-in-First-out (FIFO) method:

Number of page faults for FIFO/3:                     

FOUR Page Frames

Least-recently-used (LRU) method:

Number of page faults for LRU/4:                     

First-in-First-out (FIFO) method:

Number of page faults for FIFO/4:                    

On January 1, 2018, Gemini Corporation leased equipment under a finance lease designed to earn the lessor a 12% rate of return for providing long-term financing. The lease agreement specified ten annual payments of $225,000 beginning January 1, and each December 31 thereafter through 2026. A 10-year service agreement was scheduled to provide maintenance of the equipment as required for a fee of $15,000 per year. Insurance premiums of $12,000 annually are related to the equipment. Both amounts were to be paid by the lessor and the lease payments reflect both expenditures. At what amount will Gemini record a right-of-use asset? (Round your answer to the nearest whole dollar amount.)

On May 1, 2021, Sunland Corp. issued $870,000 of 5-year, 7% bonds at 96. The bonds pay interest annually on May 1. Sunland's year end is April 30.

Record the issue of the bonds on May 1, 2021. (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.)

Calculate the effective rate of the bonds using Excel or a financial calculator. (Round answer to 4 decimal places, e.g. 1.5751.)

Prepare an effective interest amortization table for this bond. (Round answers to 0 decimal places, e.g. 5,276.)

Record the accrual of interest at April 30, 2022.