lolol1998

(1) Label each of the following as either a physical change or a chemical reaction:

(a) An iron nail rusts; (b) An ice cube melts; (c) A puddle of water evaporates.

(2) Label each of the following as either an intensive property or an extensive property:

(a) Mass; (b) Volume; (c) Density; (d) Temperature.

(3) (a) Construct a model to represent a heterogeneous mixture of two different compounds.

(b) Construct a model to represent a homogeneous mixture of two different compounds.

(4) How many significant figures are contained in each of the following numbers?

(a) 0.00261; (b) 24; (c) 240; (d) 2.40; (e) 5.20 x 102.

1. Which characteristic below describes ONLY a solid (not liquid or gas)?
a) definite shape b) particles in contact c) definite volume d) completely fills container
2. When iron rusts, it forms a reddish-brown solid. This is:
a) a physical change b) a chemical change c) no change at all
3. What is the name of FeSO4?
a) iron (I) sulfate b) iron (II) sulfate c) iron sulfite d) iron sulfide
4. A bottle label states that the bottle contains “drinking water with minerals added for flavor. This would be an example of:
a) an element b) a compound c) a heterogeneous mixture d) a homogeneous mixture
5. Which answer has the correct number of significant figures for: length = 2.0 m + 0.2100 m?
a) 2.2 b) 2.21 c) 2.210 d) 2.2100
Place the answer with the correct number of significant figures on the lines provided below.
6. To drive one kilometer, how many centimeters should you drive?
_______________cm
7. A 10.0 gram block of gold has a density of 19.32 g/cm3. What is its volume?
______________cm3
8. What is the formula of sodium sulfide?
_________________________
9. What is the name of H2S?
_______________mm
10. How many neutrons are in 35Cl?
_______________ neutrons
For problems 11 through 13, show your work to receive full credit and use the correct number of significant figures in your final answer.
11. The density of nickel is 8.91 g/cm3. Calculate the mass of a nickel ball with a radius of 0.50 mm in grams.
(π = 3.1416; Vsphere = 4πr3/3)
12. The recommended adult dose of Elixophyllin , a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in milligrams for a 134-lb person.
13. It is 273 K outside. Do you need a jacket? Why or why not? (show your work for full credit)
14) Element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. What is the average atomic mass of the element in amu?

1. Which characteristic below describes ONLY a solid (not liquid or gas)?
a) definite shape b) particles in contact c) definite volume d) completely fills container
2. When iron rusts, it forms a reddish-brown solid. This is:
a) a physical change b) a chemical change c) no change at all
3. What is the name of FeSO4?
a) iron (I) sulfate b) iron (II) sulfate c) iron sulfite d) iron sulfide
4. A bottle label states that the bottle contains “drinking water with minerals added for flavor. This would be an example of:
a) an element b) a compound c) a heterogeneous mixture d) a homogeneous mixture
5. Which answer has the correct number of significant figures for: length = 2.0 m + 0.2100 m?
a) 2.2 b) 2.21 c) 2.210 d) 2.2100
Place the answer with the correct number of significant figures on the lines provided below.
6. To drive one kilometer, how many centimeters should you drive?
_______________cm
7. A 10.0 gram block of gold has a density of 19.32 g/cm3. What is its volume?
______________cm3
8. What is the formula of sodium sulfide?
_________________________
9. What is the name of H2S?
_______________mm
10. How many neutrons are in 35Cl?
_______________ neutrons
For problems 11 through 13, show your work to receive full credit and use the correct number of significant figures in your final answer.
11. The density of nickel is 8.91 g/cm3. Calculate the mass of a nickel ball with a radius of 0.50 mm in grams.
(π = 3.1416; Vsphere = 4πr3/3)
12. The recommended adult dose of Elixophyllin , a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in milligrams for a 134-lb person.
13. It is 273 K outside. Do you need a jacket? Why or why not? (show your work for full credit)
14) Element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. What is the average atomic mass of the element in amu?

isotope38 abundance of 5.07,mass of 37.919

isotope39x,abundance of 15.35,mass of 39.017

isotope 42,abundance of 79.85,mass of 42.111

15. Classify each of the following elements as alkali, alkaline earth, halogen or a noble gas:
a) He ________________________
b) F ________________________
c) Na ________________________
d) Ca ________________________
e) Br ________________________

1.What is the molarity of the solution prepared by concentrating, by evaporation of solvent, 755 mL of 0.200% (m/v) NaNO₃ to a volume of 716 mL?

M

2.This question has multiple parts. Work all the parts to get the most points.

4.Would the osmotic pressure of a 0.2 M NaNO₃ solution be less than, the same as, or greater than that of 0.2 M NaOH?

less than

the same as

greater than

5.What is the ratio of the osmotic pressures of 0.25 M MgBr₂ and 0.15 M NaBr. Express as a numeric value (e.g., 0.3 osmol A/0.2 osmol B = 1.5).

6.This question has multiple parts. Work all the parts to get the most points.

Question 1

Sterling silver is:

3 points

Question 2

Which mixture has the largest particle size?

3 points

Question 3

A compound differs from a mixture in that a compound always has a:

3 points

Question 4

What is the smallest part of a compound that retains the properties of that compound?

3 points

Question 5

The elements which make up water can only be separated by chemical means; therefore, water is:

3 points

Question 6

Which of the following is a pure substance made up of one type of atom?

3 points

Question 7

Classify each of the following as an element, compound, or mixture.

3 points

Question 8

A suspension is composed of substances that remain evenly distributed among each other.

2 points

Question 9

Chemical compounds can be separated into their component elements by physical means.

2 points

Question 10

All molecules are too small to be seen with the naked eye.

Write a one-paragraph response to each of the questions below.

1. Explain what is meant by the term "Self Esteem" and how it affects one's personal and professional life.

2. Describe the "food pyramid" and explain its purpose, how it can be used, and how you can use it to help manage your health.

3. Explain what is meant by "non-verbal communication," then describe some examples of positive and negative non-verbal communication behaviors and gestures.

4. Name some time management and organization techniques that are useful at home, in school, and in the workplace. Identify those that you use and explain how you use them.

5. Identify the purpose of setting short-term and long-term goals. Explain how setting goals can be used as a measure of whether you have met a goal.

6. Explain the difference between good stress and bad stress and give examples of each type. Describe at least two ways that you handle stress in your daily life.

7. Compose a consumer letter of complaint concerning a product or service that you feel was misrepresented.

8. Name a problem in your community and identify community resources that could help to solve the problem.

(12)

Question 1

Which of the following is NOT an objective of this experiment?

Question 3

Which of the following is NOT a physical method for separating components of mixtures?

Directions: record any of the following events that you observe in your daily routine:

• Any elements, compounds, mixtures or solutions
• Any physical or chemical changes in the elements, compounds, mixtures, or solutions
• Any chemical reactions
• Any event that illustrates any of the gas laws
• In your notes describe the event and relate it to the concepts from the course. You should write in your own words, describing the events as they happen

Write a lab report that includes the title, purpose, and conclusion

The final activity is to view some Chemistry demonstrations and document the activity and its results. This will be your lab report.

Directions: Follow the steps below to complete the assignment.

Step 1. Go to the link below to view demonstration videos.

Step 2. Choose three videos from the web site. You should view each videos several times.

Step 3. After a preliminary view of the videos, look at the document below. This document includes the information that you should document when you either view demonstrations or conduct experiments. It also includes the rubric so you will understand how to earn points.

Step 4. Now that you have chosen your video demonstrations, take one demonstration at a time. View the video again, taking notes carefully. After you are certain that you understand the concepts of the demonstration you are ready to write your report. Use the guide below to write your reports.

A. The title is the name of the demonstration video. The title should concisely describe the basic concept that is demonstrated in the lab activity.

B.Purpose - State the purpose of the lab beginning with the following words, To determine:

C.Hypothesis -State the hypotheses of the lab. (The hypotheses should be an 'if/then' statement.)

D. Equipment -List the equipment used in the lab. Procedure – List the procedure used in the lab. Data Table – List the data that is generated from the demonstration. You may want to create a data table. You may also create a bullet list.

Conclusion – Write 3 paragraphs that include the following information:

Paragraph 1:

a. Introduction: State the experiment

b. State the purpose of the lab

c. State the hypotheses.

d. State the outcome

Paragraph 2:

e. Discuss at least 2 sources of error that could happen: give a detailed explanation of each and how this may affect the collected data.

Paragraph 3:

f. Conclusion: provide a final summary of the demonstration.

XYZ, Inc. is a calendar-year corporation that began business on January 1, 2017. For 2018, it reported the following information in its current year audited income statement. Notes with important tax information are provided below. 

Reconcile book income to taxable income on worksheet (below).

Notes:

1. XYZ owns 10% of the outstanding Home Corp. (HC) stock.  Home Corp. reported $2,000,000 of income for the year. XYZ accounted for its investment in HC under the equity method and it recorded its pro rata share of HC’s earnings for the year. HC also distributed a $100,000 dividend to XYZ.
2. Of the $20,000 interest income, $5,000 was from Ford Motor, $7,000 was from a Toyota, $6,000 was from a Town of Presque Isle municipal bond, and the remaining $2,000 was from an investment in a CD (certificate of deposit).
3. Life insurance proceeds from death of the CFO.
4. This includes total officer compensation of $3,500,000. The CEO was paid $1,250,000 for salary in 2018 (no one officer received more than $1,000,000 compensation).
5. $2,000 is the portion of interest paid on a loan taken out to obtain a tax exempt municipal bond from the City of Presque Isle.
6. XYZ actually wrote off $48,000 of its accounts receivable as uncollectible.
7. Tax depreciation was $700,000.  
8. In the current year, XYZ made $23,500 in actual payments on warranties it provided to customers.
9. XYZ made $750,000 of cash contributions to qualified charities during the year.
10. On January 1 of this year XYZ acquired the assets of another business. In the process it acquired $200,000 of goodwill. At the end of the year, XYZ wrote off $10,000 of the goodwill as impaired. 
11. XYZ expensed all of its organizational expenditures for book purposes. It expensed the maximum amount of organizational expenditures allowed for tax purposes.
12. The other expenses do not contain any items with book-tax differences.
13. XYZ received rental income payments in 2018 that relates to 2019. They have not earned the amount as of year-end and was not recorded in the books. The total amount received was $21,500

1. Did you know who is the Best of battery?

Computational intelligence 

Which is the best car removal in Brisbane?

. For the following projects, compute NVP, IRR, MIRR, profitability index and payback. If these projects are mutually exclusive, which one(s) should be done? If they are independent, which one(s) should be undertaken? Project A Project B Project C Project D -1000 -1500 -500 -2000 400 500 100 600 400 500 300 800 400 700 250 200 400 200 200 300

For the following projects, compute NPV, IRR, MIRR, profitability index, and payback. If these projects are mutually exclusive, which one(s) should be done? If they are independent, which one(s) should be undertaken?
A B C D
Year0 -1,000 -1,500 -500 -2,000
Year1 400 500 100 600
Year2 400 500 300 800
Year3 400 700 250 200
Year4 400 200 200 300
Discount rate 10% 12% 15% 8%

What is the Ethical Hacking?

For the following projects, compute NPV, IRR, MIRR, profitability indexes, and payback. If these projects are mutually exclusive, which one(s) should be done? If they are independent, which one(s) should be undertaken?

Which of the following $1,000 investments would the payback method select? Cash flows: Year A B C 1 $400 $425 $400 2 250 225 350 3 300 360 200 4 350 250 150 5 400 250 100 C A B

Each of these investment opportunities need initial investment of $1000. What is the payback period for each of them? Which one do you prefer based on payback method?Each of these investment opportunities need initial investment of $1000. What is the payback period for each of them? Which one do you prefer based on payback method?

Cash flows:

calculate the derivative of:

d/dx x(sqrtX +1) (5x3(sqrtx-x)

FInd f prime. F= (x-3x(sqrtx))/(sqrtx)

How is the Chinese Exclusion Act affecting America today? Can we see a change moving forward?

Find:

a) K/ L

b) Y/ L

c) Total Output

As;

Y =(K) . (L)

I am giving a presentation of a redox flow battery that uses organic/organometalic reactants and they measure the capacity retention and coulombic efficiency but I don't exactly know how they get it. They say they did this: "The cell was then cycled at a constant current of 50 mA cm−2 , with a potential cutoff of 1.1 V while charging and 0.3 V while discharging. The average Coulombic efficiency during galvanostatic cycling was >99.95%. Every 10th cycle, the potential was maintained at the cutoff voltage after galvanostatic charging and discharging until the current dropped below 1 mA cm−2 . This allowed the entire capacity of the cell to be measured." But, how do they come up with values for this?

Determine theredox potential for MnO4– conversion to Mn3+ atpH= 6.

Ifound thepotential from a Latimer diagram: 1.5 V. I know Imust use theequation

"POTENTIAL -(.059 X pH)," but I don't come up with the rightanswer (0.8 V)

Find f. f ''(theta) = sin theta + cos theta, f(0) = 2, f '(0) =2

Find f(theta)

Redox potential of bromine are as

E° =BrO3–/Br = +1.513 V & E° = Br/Br– = 1.078 V

What is redox potential for com-proportionation of BrO3– and Br– to give Br2 ?

Let’s say your product is gym membership WRITE ONLY IN SHORT SENTENCES OR BULLET POINTS NO BIG PARAGRAPHS.Create a marketing campaign where the target age group is young adults transitioning into adult life (18-25). You will be assigned a product and you will have to promote your product through one of the following mediums (so pick only

1) Social media campaign, print ad, video ad, in-person demonstration. (Overall Describe the product, service or event.)

2. You will develop your marketing strategy based on your knowledge of the psychological and social experiences of young adults.What are their worries? What are their experiences? What challenges do they face? What are their sources of support? What do they need to do in order to become successful adults? Use this information to explain why your marketing strategy will be successful. (Overall How would 18-25 year olds use this product/service?)

3. A) Identify your product, service or event that you will be marketing. You may choose an existing product/service or event or develop your own. Ex: gym membership.

B) Choose ONE of the social and psychological processes that young adults experience  Ex: characteristics of young adulthood (milestones), failure to launch, goals of the early adult transition/entering the adult world stable period, quarter life crisis, Erikson’s identity vs role confusion, identity formation, resocialization, anticipatory socialization, mentorship

I’m doing a class tutorial please answer this question so i can talk about my opinion in class to get the full mark. Please make sure you provide examples to support your opinion so i can get the full mark and make sure you explain thoroughly

In Canada’s legal justice system, sentencing is the process of determining the appropriate punishment for a person who has been found guilty of a criminal offense. Sentencing is a critical part of the criminal justice system as aims to balance, the interest of the offender, the victim and society as a whole.

1. How do you think this ruling will affect the public’s perception of the Canadian justice system? Will it increase or decrease public confidence in the system? Why?

Human sexuality and intimate relationships

Answer the following 2 questions:

1. Why do women stay in abusive relationships? In your answer, identify at least 4 factors and explain how each one contributes to them staying.

2. What are two warning signs that a person you are dating or living with is behaving abusively toward you?

   Who in your life could you talk to about this situation?

How do religious works in the Baroque era differ from religious art of the Renaissance? What are some historical reasons for this shift?

CAN YOU ANSWER THESE QUESTIONS. and then can you support your opinions by recent cases or anything that has happened around the world to prove your point is right and to have a good argument. Can you also try to relate some questions to either Cesare Beccarias essay on crimes and punishment so basically stuff she has said that validates your point or even al pacino or Martin Luther king or anyone else. PLEASE

Supreme court of Canada, strikes down life without parole ruling. In Canada's legal justice system, sentencing is the process of determining the appropriate punishment for a person who has been found guilty of a criminal offense. Sentencing is a critical part of the criminal justice system as aims to balance, the interest of the offender, the victim and society as a whole.

1. What do you think about the Supreme Court's ruling on striking down life parole sentences? Do you believe this will have a positive or negative impact on the Canadian justice system? why or why not

2. In what ways do you think this ruling will affect the victims of violent crimes and their families?Will this ruling bring them justice or will it further traumatize them?

3. The Supreme Court's decision was based on the notion that life sentences with no possibility of parole are " cruel and unusual punishment". Do you agree or disagree with this assertion? Why or why not?

4. What alternatives to life parole sentences do you think that Canadian justice system can implement to ensure public safety and rehabilitation of offenders?

In your opinion, how will this ruling change the way in which Canadian courts sentence individuals convicted of violent crimes? Do you think that other countries should adopt a similar approach?Why or why not?

6. How do you think this ruling will affect the public's perception of the Canadian justice system?Will it increase or decrease public confidence in the system? why?