1. A certain first-order reaction (A→products) has a rate constant of 1.00×10−2 s−1 at 45 ∘C. How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration?

2. A certain second-order reaction (B→products) has a rate constant of 1.15×10⁻³M−1⋅s−1 at 27 ∘C and an initial half-life of 200 s . What is the concentration of the reactant B after one half-life?

please show work

Type the Python code for all the questions. 1 2 Q1: Using DataFrame, with Figure 1 data, store the hypermarket data for rows and columns. Display the output as shown in Figure 1. 0 ITEMS NAME DISCOUNT 1 Grocery Rice 56 2 Electronics Mobile 25% 3 Food Apple 30% Figure 1 Q2: Update and display the "Rice" discount from 5% to 10%. Your output should be like Figure 2 now. 1 2 0 ITEMS NAME DISCOUNT 1 Grocery Rice 108 2 Electronics Mobile 25% 3 Food Apple 30% Figure 2 NO Q3: Use Figure 3 data to add and display a new column. Your output should be like Figure 3 now. 0 1 2 3 ITEMS NAME DISCOUNT STOCK Grocery Rice 10% 100 Electronics Mobile 25% 3 Food Apple 30% W NO 20 40 Figure 3

Discuss the contributions and limitations of symbolic interactionism as a sociological perspective in the study and understanding of human societies

What is the most useful source of information on customers generated by any company? Identify all the possible data available on that source.

Chapter eight discusses problem solving strategies, and also relates it to your career making decisions. This is a good place to connect the readings this week to the resources on the Career tab.  

Has anyone used any of the milestones to begin answering these questions?

If you are not using the Careers tab, what other resource are you using to make sure you are thinking through the information needed to develop an informed career timeline?

What specific decision making or problem-solving strategy can you apply to this area?

Your friend, Jamie, works for BMS in Princeton, NJ.   When you met Jamie out for drinks last weekend, she told you that she has been battling a gambling addiction that has been causing her to go into debt, lose her car, and other various issues including arguments with her boyfriend, friends, and finally at work.  Jamie cursed and pushed a co-worker last week and the co-worker reported her behavior to HR.  She said that her supervisor met with her and gave her a Disciplinary Form following this incident. Jamie said that her supervisor told her she had better contact the company's EAP and get enrolled into counseling or else she can be fired.  

Jamie needs your help, what is an EAP and what type of action has her supervisor taken?

Lake-Snell-Perry-Mermin Associates (LSPMA) is a decision research firm that works on behalf of clients to determine what different segments of the population believe and feel about issues of interest to the clients. A third of LSPMA's work is for political candidates, another third is work for progressive issues organizations, and the remaining third is work for foundations and major institutions. LSPMA uses telephone polls, online polls, in-person and online focus groups to collect data, and to identify population (or audience) segments. Audience segmentation enables an LSPMA client to identify groups of people that are supportive of its issue(s) or cause(s), groups that can be converted to being supportive, and groups that will never be supportive. A client can then target its resources toward connecting with and persuading those segments that are likely to be the most receptive to the client's message. Dividing the audience into segments emerges from the research; once segments are identified, they are tracked in future decision research. Although audience segmentation can be useful, it can make the population seem more divided than it actually is.

LSPMA conducts research studies on behalf of political candidates, progressive issues organizations, and foundations and major institutions. These research studies are used primarily to __________.

a. Push a specific political agenda.

b. Generate financial support for political candidates, progressive issues organizations, foundations, and major institutions

c. Help clients utilize their research budgets.

d. Segment the population so that the appropriate groups of people can be targeted with the most effective messages.

By using such marketing research techniques as focus groups and/or online surveys, LSPMA can accomplish all of the following except :

a. Collect primary data regarding the attitudes and beliefs of voters.

b. Be quite precise in the information that is generated.

c. Study the effects of manipulating promotional messages to voters.

d. Obtain statistical information on a large number of voters.

- What is meant by term “inelastic traffic” on a network?

- Explain the primary difference between network applications that use client-server architecture and applications that use peer-to-peer architecture.

- What is meant by the term “peer-churn” with respect to peer-to-peer application architectures?

- Describe in one sentence what is represented by a “port” number to the protocol operating in the transport layer in layered protocol architecture.

Please don't copy and paste from the internet. Thank you

Use the following information about Rat Race Home Security, Inc. to answer the questions: Average selling price per unit $331. Variable cost per unit $188 Units sold 488 Fixed costs $5,750 Interest expense $16,184 Based on the data above, what is the degree of financial leverage of Rat Race Home Security, Inc.?

ASAP PLEASE... USE PYTHON

Design and implement in a language of your choice, i.e. a C++ , Java, or Python as you prefer, program that calculates the molecular weight of a formula. Your program should accept a formula in whatever form you choose as input from the user, and should display the molecular weight for that formula. Your program must be able to handle formulas that:

• consist of a single element, e.g., He    (worth 40 points)
• consist of a sequence of elements, e.g., H H O    (worth 20 points)
• contain numeric constants, e.g., H₂O    (worth 20 points)
• contain nested formulas, e.g., (NH₄)₂SO₄    (worth 20 points)

The representation of data and the algorithm you choose for your implementation are entirely up to you. The interface for your program should clearly describe the expected input form so the user can interact effectively. Grading emphasis for this assignment is on correctness only -- inefficiency and inelegance may be commented on but will not adversely affect your grade except in extreme cases.

The periodic table of elements can be found in many sources, incuding numerous Web pages (e.g., www.chemicalelements.com/show/mass.html). A list of elements with their atomic weights is written as raw text below:

    H    1.0080    He   4.0026    Li   6.9410    Be   9.0122    B   10.8100

    C   12.0110    N   14.0067    O   15.9994    F   18.9984    Ne  20.1790

    Na  22.9898    Mg  24.3050    Al  26.9815    Si  28.0860    P   30.9738

    S   32.0600    Cl  35.4530    Ar  39.9480    K   39.1020    Ca  40.0800

    Sc  44.9559    Ti  47.9000    V   50.9414    Cr  51.9960    Mn  54.9380

    Fe  55.8470    Co  58.9332    Ni  58.7100    Cu  63.5460    Zn  65.3700

    Ga  69.7200    Ge  72.5900    As  74.9216    Se  78.9600    Br  79.9040

    Kr  83.8000    Rb  85.4678    Sr  87.6200    Y   88.9059    Zr  91.2200

    Nb  92.9064    Mo  95.9400    Tc  98.9062    Ru 101.0700    Rh 102.9055

    Pd 106.4000    Ag 107.8680    Cd 112.4000    In 114.8200    Sn 118.6900

    Sb 121.7500    Te 127.6000    I  126.9045    Xe 131.3000    Cs 132.9055

    Ba 137.3400    La 138.9055    Ce 140.1200    Pr 140.9077    Nd 144.2400

    Pm 145.0000    Sm 150.4000    Eu 151.9600    Gd 157.2500    Tb 158.9254

    Dy 162.5000    Ho 164.9303    Er 167.2600    Tm 168.9342    Yb 173.0400

    Lu 174.9700    Hf 178.4900    Ta 180.9479    W  183.8500    Re 186.2000

    Os 190.2000    Ir 192.2200    Pt 195.0900    Au 196.9665    Hg 200.5900

    Tl 204.3700    Pb 207.2000    Bi 208.9806    Po 210.0000    At 210.0000

    Rn 222.0000    Fr 223.0000    Ra 226.0254    Ac 227.0000    Th 232.0381

    Pa 231.0359    U  238.02900   Np 237.0482    Pu 242.0000    Am 243.0000

    Cm 247.0000    Bk 249.0000    Cf 251.0000    Es 254.0000    Fm 253.0000

    Md 256.0000    No 256.0000    Lr 257.00

discuss any products you are able to identify that falls under the category as product differentiation.

Cash Discounts

Suppose a firm makes purchases of $3.55 million per year under terms of 3/10, net 30, and takes discounts. Assume 365 days in a year for your calculations. Do not round intermediate calculations.

1. What is the average amount of accounts payable net of discounts? (Assume that the $3.55 million of purchases is net of discounts - that is, gross purchases are $3,659,794, discounts are $109,794, and net purchases are $3.55 million.) Round your answer to the nearest dollar.
   $  
   
2. Is there a cost of the trade credit the firm uses?
       -Select-IIIItem 2
   I. There is no cost of trade credit at this point. The firm is using "free" trade credit.
   II. The cost of the trade credit is $291,781.
   
3. If the firm did not take discounts but it did pay on the due date, what would be its average payables? Round your answer to the nearest dollar.
   $  
   If the firm did not take discounts but it did pay on the due date, what would be its nominal cost? Round your answer to two decimal places.
        %
   If the firm did not take discounts but it did pay on the due date, what would be its effective cost? Round your answer to two decimal places.
        %
   
4. What would the firm's cost of not taking discounts be if it could stretch its payments to 39 days? Round your answers to two decimal places.

   Nominal cost	%
   Effective cost	%

A refrigerator using R-12 as the working fluid

keeps the refrigerated space at 2158C in an environment at

308C. You are asked to redesign this refrigerator by replacing

R-12 with the ozone-friendly R-134a. What changes in the

pressure levels would you suggest in the new system? How

do you think the COP of the new system will compare to the

COP of the old system?

- What event will cause the sender to initiate fast retransmit when using TCP?

- Describe briefly the relationship between the round trip time (RTT) observed between a sender and a receiver and the retransmit timer used in TCP.

- Describe briefly the basic difference in service provided by an email server using POP3 protocol compared to an email server using IMAP protocol.

Please don't copy and paste from the internet. Thank you

After inheriting $50,000 you open up two separate brokerage accounts and divide your

inheritance equally in both accounts ($25,000 in each). You use only these funds to

trade in two stocks for two months at the end of which you clear both your positions and

evaluate your performance. Assume the following:

- You pay $50 per transaction (use only your inheritance as source of funds)

- Call money rate is 3.5% (APR compounded daily – 365 days a year)

- Initial margin is 50% and maintenance margin is 30%. The maximum amount in

‘borrowed’ funds is based on the number of ‘whole’ shares.

- Only your equity funds in the short arrangement earn interest.

- Treat each account separately for purposes of this assignment.

On 7/1 you did the following:

1. Buy stock SOFT for $40 (account 1) and short stock XESLA for $250 (account 2)

using initial margin is 50% in each of the two accounts. Provide the following

information (it is advisable to answer 1 and 2 one account at a time):

a. For each account, describe the price change (increase or decrease) that would

be desirable.

b. Number of shares bought/sold of each stock.

c. Amount of money borrowed for the margin trade in each account.

d. The price will you receive a margin call for each account.

2. Suppose you close out of each position at the end of the two months at the following

prices:

a. Suppose SOFT price has increased to $50.

b. Suppose SOFT price has decreased to $30.

c. Suppose XESLA price has increased to $275.

d. Suppose XESLA price has decreased to $225.

For each ending price, evaluate your performance by computing the following:

• The holding period return of each account2

• The annualized holding period return of each account.

3. Assume that you did not pay brokerage fees what would be the difference in

performance in each account in #2 above?

4. Compute the holding period return of the combined accounts (portfolio) when the

prices of the stocks increase (ignore # 3 above).