For 530.0 mL of a buffer solution that is 0.155 M in CH3CH2NH2 and 0.145 M in CH3CH2NH3Cl, calculate the initial pH and the final pH after adding 0.020 mol of HCl.

the previous one I saw it, I wonder how to do the last one.

Read carefully
See the photo of the algorithm below after reading these instructions: write a program in Python 3 which uses a list. Your program will use a list to store the names and exam scores of students. The program starts by asking how many results will be entered. Then a loop will be used to enter the name and score for each student. As each name and score is entered it is appended to a list (which was initially empty). When the loop is finished (i.e. all scores are entered) the program ends by printing the list.

Make a copy of your Lab6A.py file to Lab6B.py. Amend the comments accordingly for these instructions. Send the list you created in Lab 6A to a function which returns a list of names of all above average students.

A population of values has a normal distribution with μ=99.5 and σ=83.2. You intend to draw a random sample of size n=197. Please answer the following questions, and show your answers to 1 decimal place.

Find P77, which is the value (X) separating the bottom 77% values from the top 23% values. P77 (for population) =

Find P77, which is the sample mean (¯x) separating the bottom 77% sample means from the top 23% sample means. P77 (for sample means) =

Evaluate the effect of each shock below using first the classical model and second the Keynesian model. For the Classical model, include graphs of the goods market, the labor market, and the money market. For the Keynesian model, include an IS-LM-FE graph, an Aggregate Supply – Aggregate Demand graph, and a graph of labor market equilibrium with efficiency wages. For the Keynesian model, include short-run effects, while the price is constant, and long run effects after the price has fully adjusted.

1. There is a permanent increase in the money supply.
2. There is an increase in expected future productivity (the z in the production function).
3. There is an increase in government spending financed by an increase in expected future taxes.
4. There is an increase in the price of oil which reduces total factor productivity (z).

Choose a legislator on the state or federal level who is also a nurse and discuss the importance of the legislator/nurse role as advocate for improving health care delivery.

The combination of sodium chlorite and acetic acid forms hypochlorous acid (HOCl), which is the active ingredient in this reaction. Draw the arrow pushing mechanism of your reaction, using HOCl as reagent.

5. The price of trade

Suppose that Spain and Germany both produce fish and wine. Spain's opportunity cost of producing a bottle of wine is 3 pounds of fish while Germany's opportunity cost of producing a bottle of wine is 11 pounds of fish.

By comparing the opportunity cost of producing wine in the two countries, you can tell that   has a comparative advantage in the production of wine and   has a comparative advantage in the production of fish.

Suppose that Spain and Germany consider trading wine and fish with each other. Spain can gain from specialization and trade as long as it receives more than   of fish for each bottle of wine it exports to Germany. Similarly, Germany can gain from trade as long as it receives more than   of wine for each pound of fish it exports to Spain.

Based on your answer to the last question, which of the following prices of trade (that is, price of wine in terms of fish) would allow both Germany and Spain to gain from trade? Check all that apply.

2 pounds of fish per bottle of wine

1 pound of fish per bottle of wine

5 pounds of fish per bottle of wine

7 pounds of fish per bottle of wine

1. For the following, predict the products (if any). If there is no reaction, write “no rxn”. For the

questions where reaction occurs, write:

 balanced molecular equation

 balanced complete ionic equation

 balanced net ionic equation

 classify the reaction as either precipitation or acid base resulting in a gas

Include phases for all species.

a) NaI(aq) + Pb(ClO4)2(aq)

b) Ba(NO3)2(aq) + (NH4)2SO4(aq)

c) HCl(aq) + NaHSO3(aq)

d) Cu(CH3COO)2(aq) + Rb2CO3(aq)

e) aqueous potassium carbonate + hydrobromic acid

f) Mg(NO3)2(aq) + Zn(CH3COO)2(aq)

g) aqueous silver perchlorate + aqueous magnesium bromide

h) NH4Cl(aq) + KOH(aq)

7. A farsighted man uses eyeglasses with a refractive power of 2.00 diopters. Wearing the glasses 0.020 m from his eyes, he is able to read books held no closer than 0.304 m from his eyes. He would like a prescription for contact lenses to serve the same purpose. What is the correct contact lens prescription, in diopters?
diopters

A 1270-kg cannon shoots a 34.3-kg shell at an angle of 24.7° above the horizontal and a speed of 491 m/s. What is the recoil velocity of the cannon?

A fair coin is tossed 25 times. What is the probability that at least 1 tail occurs?

a) 1

b) 0.00000075

c) 0.99999923

d) 0.00000003

e) 0.99999997

f) None of the above.

A business organization needs to make up a 5 member fund-raising committee. The organization has 9 accounting majors and 7 finance majors. What is the probability that at most 2 accounting majors are on the committee?

a) 0.0151

b) 0.0048

c) 0.3654

d) 0.0103

e) 0.3606

f) None of the above.

A classroom of children has 17 boys and 19 girls in which five students are chosen at random to do presentations. What is the probability that more boys than girls are chosen?

a) 0.4448

b) 0.0164

c) 0.3249

d) 0.1199

e) 0.4284

f) None of the above.

A toy manufacturer inspects boxes of toys before shipment. Each box contains 9 toys. The inspection procedure consists of randomly selecting three toys from the box. If one or more of the toys are defective, the box is not shipped. Suppose that a given box has two defective toys. What is the probability that it will be shipped?

a) 0.4365

b) 0.0833

c) 0.0714

d) 0.5833

e) 0.4167

f) None of the above.

A chemist is working with a formic acid � formate ion buffer system.

HCHO₂(aq) + H₂O(l) <=> CHO₂^-(aq) + H₃O⁺(aq) with K_a = 1.7�10^-4

One liter of the buffer contains 0.745 moles of formic acid and 0.385 moles of formate ion. What is the pH of the buffer? (Answer to 3 significant figures, no units.)

______________________________________________________

Solid sodium hydroxide (6.83 grams) is added to one liter of the formic acid � formate ion buffer described in the previous question. Assume the total volume has not changed significantly once the strong base has dissolved. What is the new pH of the buffer? (Answer to 3 significant figures, no units.)

WE ARE USING PYTHON TO COMPLETE THIS ASSIGNMENT :) THANK YOU!

In this programming assignment, you will write functions to encrypt and decrypt messages using simple substitution ciphers. Your solution MUST include:

• a function called encode that takes two parameters:
  • key, a 26-character long string that identifies the ciphertext mapping for each letter of the alphabet, in order;
  • plaintext, a string of unspecified length that represents the message to be encoded.

  encode will return a string representing the ciphertext.

• a function called decode that takes two parameters:
  • key, a 26-character long string that identifies the ciphertext mapping for each letter of the alphabet, in order;
  • ciphertext, a string of unspecified length that represents the message to be decoded.

  decode will return a string representing the plaintext.

Copy and paste the following statements into your file as the first two statements of your main program. These lines represent Python lists of messages for you to encode and decode to test the functions you write.

    plaintextMessages = [
        ["This is the plaintext message.",
         "bcdefghijklmnopqrstuvwxyza"],
        ["Let the Wookiee win!",
         "epqomxuagrdwkhnftjizlcbvys"],
        ["Baseball is 90% mental. The other half is physical.\n\t\t- Yogi Berra",
         "hnftjizlcbvysepqomxuagrdwk"],
        ["I used to think I was indecisive, but now I'm not too sure.",
         "mqncdaigyhkxflujzervptobws"],
        ["Einstein's equation 'e = mc squared' shows that mass and\n\t\tenergy are interchangeable.",
         "bludcmhojaifxrkzenpsgqtywv"] ]

    codedMessages = [
        ["Uijt jt uif dpefe nfttbhf.",
         "bcdefghijklmnopqrstuvwxyza"],
        ["Qnhxgomhqm gi 10% bnjd eho 90% omwlignh. - Zghe Xmy",
         "epqomxuagrdwkhnftjizlcbvys"],
        ["Ulj njxu htgcfj C'gj jgjm mjfjcgjt cx, 'Ep pej jyxj veprx rlhu\n\t\t uljw'mj tpcez jculjm'. - Mcfvw Zjmghcx",
         "hnftjizlcbvysepqomxuagrdwk"],
        ["M 2-wdme uxc yr kylc ua xykd m qxdlcde, qpv wup cul'v gmtd mlw\n\t\t vuj aue yv. - Hdeew Rdyladxc",
         "mqncdaigyhkxflujzervptobws"] ]

You may alter the spacing or indentation of the two lines to conform to the rest of your code, but you are not allowed to change the strings or structure of the lists.

plaintextMessages is a list consisting of five items. Each item is a list of two strings corresponding to a plaintext message and a key. For each of these five items, you should:

• print the plaintext message.
• encode the message and print the ciphertext.
• decode the ciphertext message you just calculated and print the plaintext message again. The purpose of this is to demonstrate that your encode and decode functions work properly as inverses of each other.

If you have done this correctly, the output from your program for the first data item should look like the following:

plaintext:   This is the plaintext message.
encoded:     Uijt jt uif qmbjoufyu nfttbhf.
re-decoded:  This is the plaintext message.

Then print a blank line to separate this block of three lines from the next block.

codedMessages is a list consisting of four items. Each item is a list of two strings corresponding to a ciphertext message and a key. For each of these four items, you should:

• print the ciphertext message.
• decode the message and print the ciphertext.

If you have done this correctly, the output from your program for the first data item should look like the following:

encoded:  Uijt jt uif dpefe nfttbhf.
decoded:  

Then print a blank line to separate this block of two lines from the next block.

Special notes:

• Encrypted and decrypted lower-case letters should map to lower-case letters, as defined by the key.
• Encrypted and decrypted upper-case letters should map to upper-case letters. Note that upper-case letters do not appear in the key! (Look at the first character in the expected output shown above: the upper-case "T" maps to an upper-case "U" in the encoded message.) Your program must detect when an upper-case letter appears in the data, and figure out how to convert it to the correct upper-case letter based on the corresponding lower-case letters in the key.
• Non-alphabetic characters, such as numbers, spaces, tabs, punctuation, etc. should not be changed by either encode() or decode().

Income Statements under Absorption Costing and Variable Costing

Joplin Industries Inc. manufactures and sells high-quality sporting goods equipment under its highly recognizable J-Sports logo. The company began operations on May 1 and operated at 100% of capacity (61,600 units) during the first month, creating an ending inventory of 5,600 units. During June, the company produced 56,000 garments during the month but sold 61,600 units at $115 per unit. The June manufacturing costs and selling and administrative expenses were as follows:

a. Prepare an income statement according to the absorption costing concept for June.

b. Prepare an income statement according to the variable costing concept for June.

c. What is the reason for the difference in the amount of income from operations reported in (a) and (b)?

Under the   method, the fixed manufacturing cost included in the cost of goods sold is matched with the revenues. Under  , all of the fixed manufacturing cost is deducted in the period in which it is incurred, regardless of the amount of inventory change. Thus, when inventory decreases, the   income statement will have a lower income from operations.

Lane Company manufactures a single product that requires a great deal of hand labor. Overhead cost is applied on the basis of standard direct labor-hours. The budgeted variable manufacturing overhead is $2.40 per direct labor-hour and the budgeted fixed manufacturing overhead is $384,000 per year.

The standard quantity of materials is 4 pounds per unit and the standard cost is $4.00 per pound. The standard direct labor-hours per unit is 1.5 hours and the standard labor rate is $12.20 per hour.

The company planned to operate at a denominator activity level of 60,000 direct labor-hours and to produce 40,000 units of product during the most recent year. Actual activity and costs for the year were as follows:

Required:

1. Compute the predetermined overhead rate for the year. Break the rate down into variable and fixed elements.

2. Prepare a standard cost card for the company’s product.

3a. Compute the standard direct labor-hours allowed for the year’s production.

3b. Complete the following Manufacturing Overhead T-account for the year.

4. Determine the reason for any underapplied or overapplied overhead for the year by computing the variable overhead rate and efficiency variances and the fixed overhead budget and volume variances.