This problem is a long one, but fairly conceptual in nature.

a. For each of the following salts, write the reaction that occurs when it dissociates in water: NaCl(s), NaCN(s), KClO2(s), NH4NO3(s), KBr(aq), NaF(s).

b. Consider each of the reactions that you wrote above, and identify the aqueous ions that *could* be proton donors (acids) or proton acceptors (bases). Briefly *explain how you decided which ions to choose*.

c. For each of the acids and bases that you identified in part b, write the chemical reaction it can undergo in aqueous solution (its reaction with water).

d. Are there any reactions that you have written above that you anticipate will occur to such an extent that the pH of the solution will be affected? As part of your answer, be sure to explain how you decided.

e. Assume that in each case, above, 0.01 mol of the salt was dissolved in enough water at 25 deg Celsius to make 1.0L of solution. In each case, what additional information would you need in order to calculate the pH? If there are cases where no additional information is required, be sure to state that as well.

f. Say you take 0.01 mol of NH4CN and dissolve it in enough water at 25 deg Celsius to make 1.0L of solution. Using chemical reactions and words, explain how you would go about determining what effect this salt will have the pH of the solution. Be sure to list any additional information you would need to arrive at an answer.

A particle carrying charge +q is located on the xaxis at x=+d. A particle carrying charge ?3q is located on the x axis at x=?7d.

A. With zero potential at infinity, at what location on the x axis with negative coordinate is the electrostatic potential zero? Express your answer in terms of d.

B. With zero potential at infinity, at what location on the x axis with positive coordinate is the electrostatic potential zero? Express your answer in terms of d.

C. At what location on the y axis with negative coordinate is the potential zero? Express your answer in terms of d.

D. At what location on the y axis with positive coordinate is the potential zero? Express your answer in terms of d.

E. Are there any locations on the x or y axis where the electrostatic potential is zero?

1.         Parking Tickets – The Kaiserslautern police department claims that it issues an average of only 60 parking tickets per day.  The data below, reproduced in your Excel answer workbook,  show the number of parking tickets issued each day for a randomly selected period of 30 days.  Assume σ =13.42.   State the null and alternate hypotheses, as well as the claim, which (hint!) is in the null hypothesis.  Is there enough evidence to reject the group’s claim at  α = .05?   (As with all of these exercises, use the P-value method, rounding to 4 digits.)  (Hint:  so since we know the population standard deviation, use the standard normal distribution z-test .) (Monday class)

            79        78        71        72        69        71        57        60

            83        36        60        74        58        86        48        59

            70        66        64        68        52        67        67

            68        73        59        83        85        34        73

(Note:  You’ll find these data posted in Worksheet #1 of the Excel answer template.)

Write a C Unix shell script called showperm that accepts two command line parameters. The first parameter should be an option flag, either r, w or x. The second parameter should be a file name. The script should indicate if the specified file access mode is turned on for the specified file, but it should display an error message if the file is not found. For example, if the user enters: showperm r thisfile the script should display “readable” or “not readable” depending on the current status of thisfile.

You are assigned to implement the following baggage-check-in system at the airport.

The system keeps track of data for the following information: passenger, bags, and tickets.

The program must maintain passenger details like name, address, phone number, and the number of bags. Each passenger can have multiple bags and each bag has length, width, height, and weight. The passenger also has a ticket. The tickets are of two types, either a first-class ticket or an economy-ticket. The maximum weight allowed for a first-class ticket is 40 Kilos and the maximum weight allowed for an economy-ticket is 30 Kilos. The program must display all the details of the passenger, ticket, and number of bags and allowed weight. If the weight exceeds that of the respective ticket class, then the program will give appropriate message to indicate that the passenger cannot travel. Your program must throw an exception to indicate the failure.

Requirements

• Implement the following functions:
  1. checkOverweigth() # Given the ticket number, check if the total weight of all bags exceeds limit
  2. checkPassengerClass() # Given the ticket number, the class of the ticket is given
  3. displayPassengerDetails() # Given the ticket number, display all check-in details of a passenger
• Student is required to identify classes, related attributes, and behaviors. Students are free to add as many attributes as required. The appropriate access modifiers (private, public, or protected) must be used while implementing class relationships. Proper documentation of code is mandatory.
• Student must also test the code, by creating at-least three objects. All classes must have a display function, and the program must have functionality to print current state of the objects.

Use C++

Black Jack

Create a program that uses methods and allows the user to play the game of blackjack against the computer dealer. Rules of Blackjack to remember include:

1. You need one 52 card deck of cards with cards from  2-Ace (4 cards of each number).

2. Jacks, Queens and Kings count as 10 points.

3. An Ace can be used as either 1 or 11 depending on what the user decides during the hand.

4. Draw randomly two cards for the "dealer" and display one of them while keeping the other hidden. Also, randomly draw two cards for the player and display them in view.

5. Allow the user to hit (randomly draw a card) as many times as they wish. If the player "busts" or gets over 21, the dealer automatically wins the players wager.

6. After the user "stands" or is satisfied with his total, the dealer must take a card if his total is 16 or below, and cannot take a card if his total is 17 or above.

7. If the dealer "busts" or goes over 21, the player wins back his wager plus his wager again. (Example - if a player bets $3 he gets back his original $3 plus an additional $3).

8. If neither the dealer or the player "busts" or goes over 21, then the highest total wins. Ties go to the dealer.

9. Note - the player should start with $20 in the bank and cannot wager more than he currently has in the bank.  

10.  Note - before each round the user can bet in whole dollars how much to wager or how much of the total in the bank to risk.

11. Allow the user to quit at any time. Of course, the user must quit if he/she runs out of money.

12. Remember, somehow ensure that the same card (example - 6 of spades) cannot be drawn twice in a single hand.

Explain how the supply curve changes as the elasticity of supply increases.

A marketing firm is considering making up to three new hires. Given its specific needs, the management feels that there is a 60% chance of hiring at least two candidates. There is only a 7% chance that it will not make any hires and a 10% chance that it will make all three hires.

a. What is the probability that the firm will make at least one hire? (Round your answer to 2 decimal places.)

b. Find the expected value and the standard deviation of the number of hires. (Round intermediate calculations to at least 4 decimal places. Round your final answers to 2 decimal places.)

Construction of the new airport terminal has gone over budget and the Airport Authority needs every dollar it can get to pay its debt. They have asked your advice on a pricing strategy for parking at the airport. They know there are three types of parking users: 1) Short term users, who come to the airport to drop off or pick up passengers and stay for two hours or less; 2) Business travelers, who are away for one to four days; and 3) Leisure travelers that need parking for a week or more. a) Illustrate and use an appropriate economic model to explain how the airport could maximize its parking revenue. b) Use your analysis to discuss whether building a new parking garage would be a good investment for the airport?

A parent may terminate the execution of one of its children. What are the reasons?

DataPoint Engineering is considering the purchase of a new piece of equipment for $280,000. It has an eight-year midpoint of its asset depreciation range (ADR). It will require an additional initial investment of $180,000 in nondepreciable working capital. $45,000 of this investment will be recovered after the sixth year and will provide additional cash flow for that year. Income before depreciation and taxes for the next six are shown in the following table. Use Table 12–11, Table 12–12. Use Appendix B for an approximate answer but calculate your final answer using the formula and financial calculator methods.

The tax rate is 25 percent. The cost of capital must be computed based on the following:

a. Determine the annual depreciation schedule. (Do not round intermediate calculations. Round your depreciation base and annual depreciation answers to the nearest whole dollar. Round your percentage depreciation answers to 3 decimal places.)

b. Determine the annual cash flow for each year. Be sure to include the recovered working capital in Year 6. (Do not round intermediate calculations and round your answers to 2 decimal places.)

c. Determine the weighted average cost of capital. (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.)

d-1. Determine the net present value. (Use the WACC from part c rounded to 2 decimal places as a percent as the cost of capital (e.g., 12.34%). Do not round any other intermediate calculations. Round your answer to 2 decimal places.)

d-2. Should DataPoint purchase the new equipment?

The Dilana Corporation is considering a change in its cash-only policy. The new terms would be net one period. The required return is 1.5 percent per period. The firm has current sales of 3,500 units per month at a price of $71 per unit. The new policy is expected to increase sales to 3,550 units at a price of $71 per unit. The cost per unit is constant at $38. What is the incremental cash inflow of the new policy?

1. In a local agricultural reporting area, the average wheat yield is known to be 50 bushels

per acre with a wheat yield standard deviation of 10 bushels. The wheat yield is known to

be approximately normally distributed.

a) What percentage of the wheat yield is below 40 bushels per acre?

b) If a random sample of 25 acres is selected, what is the probability that the sample

mean yield will be between 48 and 52 bushels?

2. The weight of cans of sardines from a production line are normally distributed with a

mean of 16.8 oz and a variance of 2.25 oz. For each run of the process, 100 cans are

selected randomly and weighted. What is the probability that the average weight of these

cans is between 16.5 and 17.1 oz?

3. The Sullivan Advertising Agency has determined that the average cost to develop a 30-

second commercial is P50,000. The cost is assumed to be normal. What is the probability

that a random sample of 25 commercials with a standard deviation of P6,000 will have a

mean cost of P51,582 or less?

4. Two sets of bolts are intended to have different lengths but the same diameter. The

diameters of bolts of Type I have a variance of 4 cm; the diameters of the bolts of Type II

have a variance of 12 cm. Random samples of 10 bolts of Type I and 20 bolts of Type II

are obtained. What is the probability that the sample means will differ by at least 1.5 cm?

5. A random sample of 10 students from QUAMETH EA has an average grade of 65 with a

variance of 25; an independent random sample of 18 students from QUAMETH EB has

an average grade of 70 with a variance of 20. Assume that the grades of the two sections

are independently normally distributed with the same variance and means differing by 5

with the average of grade of EB higher than that of EA. Find the probability that the

sample mean of QUAMETH EB is at least 10 points higher than the sample mean of

QUAMETH EA.

6. Manufacturers of golf balls are concerned with a scientific concept called the coefficient

of restitution, defined as the ratio of the relative velocity of the ball and club after impact

to the relative velocity before impact. A manufacturer has developed a new solid-core

golf ball which he wishes to sell side-by-side with his firm's standard brand. The mean

coefficient of restitution for the new solid-core ball and the firm's standard brand of golf

ball are 0.69 and 0.55, respectively. The standard deviations of the coefficient of

restitution are 0.18 for the solid-core golf ball and 0.22 for the firm's standard brand. The

coefficient of restitution of the two types of golf balls can be assumed to be normally

distributed. A large institutional buyer of golf balls selects a random sample of 25 solid-

core golf balls and another random sample of 21 standard golf balls to test and compare

the two brands. Referring to the samples:

a) What is the probability that the mean coefficient of restitution of the solid-core golf

ball is greater than that of the standard golf ball?

b) What is the probability that the variance of coefficient of restitution of the solid-core

golf ball is less than 0.01674?

c) What is the probability that the ratio of the variance of the solid-core golf ball to the

standard brand is between 1.3924 and 1.9145?

7. The washers used in a particular type of motor are required to be of uniform thickness and

are manufactured so that the thickness has a standard deviation of a 0.0001 cm. What is

the probability that the standard deviation of a random sample of 25 washers is between

0.000072 cm and 0.00014 cm? Assume normality of population.

8. The variance of population 1 is twice the variance of population 2. Independent random

samples of size 16 and 11 are taken from these two normal populations. What is the

probability that the sample variance from population 1 is less than 5.7 times the sample

variance from population 2?

9. It is known that 5% of the radio tubes produced by a certain manufacturer are defective. If

the manufacturer sends out lots containing 100 tubes, what is the probability that at least

98% of the tubes are good?

10. The proportion of male births in the country per week is 0.48. What is the probability that

UST Hospital, which normally carries out natal deliveries at the rate of 40 babies per

week, will deviate at most 10% from the national statistic?

11. The proportion of households who watch a TV special in Ilocos is 60%. In Leyte, the

proportion of households who watch the same special is 70%. If a sample of 50 is

obtained from each province, what is the probability that the sample proportion from

Ilocos is less than that of Leyte?

12. A manufacturer produces test tubes from two independent processes. Process 1 produces

10% defectives while Process 2 produces 15% defectives. Random samples of size 100

are obtained from each process on a daily basis. What is the probability that the sample

from Process 1 has fewer defectives than the of Process 2?

13. A new process will be installed if its mean processing time is at most 20 minutes. The

new procedure was tried. In a random sample of 50 trials, an average processing time of

22.2 minutes with a standard deviation of 4.3 minutes was obtained. At a level of

significance of 0.05, should the new process be installed?

14. The output of a chemical process is monitored by taking a sample of 20 vials to determine

the level of impurities. The desired mean level of impurities is 0.040 grams per vial. If the

mean level of impurities in the sample is too high, the process will be stopped and

purged; if the sample mean is too low, the process will be stopped and the values will be

readjusted. Otherwise, the process will continue.

a) Sample results provide sample mean to be equal to 0.047 grams with sample standard

deviation equal to 0.018. At a significance level of 0.01, should the process be

stopped? If so, what type of remedial action will be required?

b) Assume that the mean level of impurities is within tolerable limits. If the maximum

tolerable variability of the process is 0.0002, do the sample results verify the

suspicion that the maximum tolerable variability has been exceeded? Use a 5% level

of significance.

15. Two astronomers recorded observations on a certain star. The 35 readings obtained by the

first astronomer have a mean reading of 1.45. The 32 observations by the second

astronomer have a mean reading of 1.30. Past experience has indicated that each

astronomer obtains readings with a variance of 0.50. Is there any difference between the

mean readings of the two astronomers? Use a level of significance of 0.01.

17. An advertising executive claims 50% of the people who saw Voltes V will remember the

name of their product after they watched the show. If 65 viewers in a random sample of

150 remembered the name of the product after seeing the show, what conclusion can be

reached at the 1% level of significance?

18. In an attitude test, 55 out of 120 persons of Community 1 and 115 persons out of 400 of

Community 2 answered “Yes” to a certain question. Do these two communities differ

fundamentally in their attitudes on this question assuming a 5% level of significance?

20. An advertising company wants to determine if the cartoon series, Voltes V, appeals to

male viewers more than female viewers. Based on random telephone interviews, it was

found that 23 out of 48 females and 41 out of 90 females watch the series regularly. What

should the advertising company conclude at the 5% level of significance?

How do you create your multiple regression formula from your data? I ran my Regression in excel and I have my data, I just don't know how to create the formula.

Following are the post-lab questions for the experiment: Magnetic Behavior and Electron Configuration of Compounds Version

1. Chromium, Cr, has 24 electrons. Write out the entire electron configuration for chromium using spdf notation.

2. How many unpaired electrons would you expect for chromium in [Cr(H2O)6] 3+? Is this a paramagnetic or diamagnetic material?

3. Cobalt, Co, has 27 electrons. Write out the entire electron configuration for cobalt using spdf notation.

4. How many unpaired electrons would you expect for manganese in KMnO4? Is this a paramagnetic or diamagnetic material?

5. This same experiment is performed on the international space station. What is the primary issue with performing this experiment in the absence of gravity? Design an experiment to compensate for this. As always, you do have duct tape.