2.a) Carbon tetrachloride is an organic compound with the chemical formula CCl4. It is a
colorless liquid with a “sweet” smell.
quid with a “sweet” smell.
i. Using the ground state electron configuration and excited state electron
configuration explain the hybridization of the central Carbon (C) atom. (7 Marks)
ii. Identify the orbitals that overlap to form the C-Cl bond. Draw a diagram to show
the orbital overlap. (3 Marks)
iii. What is the bond angle of CCl4? (1 Mark)
b) Consider a Fluorine atom (F) and a Fluorine anion (F-). Which of these two species would
you expect to have a larger radius? Explain your answer. (5 Marks)
c) Explain why the first ionization energy of Aluminum (Al) is less than that of Magnesium
(Mg). (4 Marks)
d) Assume the atom Oxygen(O) can form both cationic(O+) and anionic(O-) species. Place
the following species in order of increasing first ionization energy, starting with the lowest.
O+, O, O-
a) Sea water contains roughly 28.0 g of NaCl per liter. (NaCl molar mass = 58.44 gmol-1).
i. Calculate the number of moles of NaCl in a liter of sea water. (2 Marks)
ii. Calculate the molarity of NaCl in sea water. (4 Marks)
iii. Calculate the mass by volume percent (W/V) of NaCl in sea water. (4 Marks)
Take me as someone who has always had an interest in air pollution, but doesn't have the time to learn
earn about it independently. I am hiring you to learn all that you can about it and put together a report that will summarize all the information so that I can learn as much as I can in as little time as possible. Here is what you need to include in your report:
An explanation of air pollution. What is air pollution? //
Explain 4 causes of air pollution.
Explain 2 sources of air pollution. What are the toxins or pollutants that contaminate the air?
Explain at least 5 effects of air pollution on human health and/or the environment.
Explain 3 solutions to stopping air pollution. What can be done by the government or private organizations?
Work cited page should also be included, listing all the sources you used to get your information.
THIS REPORT SHOULD BE TYPED AND ORGANIZED IN 5 OR MORE PARAGRAPHS. READ THE RUBRIC BELOW CAREFULLY TO UNDERSTAND HOW THIS PROJECT WILL BE GRADED!!
WORKS CITED PAGE
General guidelines for citing sources:
List entries alphabetically by author (if no author list title first)
Separate entries with periods
Author, last name first. "Webpage title." Website title. Date published/updated. Organization/publisher. Date accessed. < URL >
Landsberger, Joseph. “Citing Websites." Study Guides and Strategies . 12 May 2005. University of
X. 13 May 2005. < http://www.studygs.net/citation.htm >.
These websites will format your citations for you: http://citationmachine.net/ & http://easybib.com/
**You should use google slides or powtoons to put together your information. You should have a minimum of 6 slides not including the title slide with your name.** DUE FRIDAY, APRIL 3, 2020
Three or more required elements are missing (not including additional facts).
1 or 2 required elements are missing (not including additional facts).
All required information is present, but no additional information is given.
All required information is present, including two additional facts.
Quality of information
Information has little or nothing to do with the main topic OR sections do not provide any supporting detail or explanation.
Information clearly relates to the topic, but some sections are lacking detail and explanation.
Information clearly relates to the main topic and all sections include some supporting detail and explanation.
Information clearly relates to the main topic and all sections include significant supporting details and explanation.
Title page is not present at all AND/OR there are errors in typing, spacing, no picture, etc.
Product has improperly formatted title page AND/OR no picture or not creative.
Product has incorrectly formatted title page and has pictures.
Product has a title page in the proper format, has pictures and is creative.
5 or more grammatical, spelling or punctuation errors present throughout the product.
3-4 grammatical, spelling or punctuation errors present throughout the product.
1-2 grammatical, spelling or punctuation errors present throughout the product.
No grammatical, spelling or punctuation errors present throughout the product.
Works Cited page not present.
All sources are documented with 3-4 errors in format OR Works Cited is not done a separate page.
Works Cited is done on a separate page and all sources are documented with 1-2 errors in format.
Works Cited is done on a separate, properly headed page with all sources documented in proper Works Cited format.
6.Can domestic dogs understand human body cues such as leaning? The experimenter leaned toward one of two objects and recorded
two objects and recorded whether or not the dog being tested correctly chose the object indicated. A four-year-old male beagle named Augie participated in this study. He chose the correct object 42 out of 70 times when the experimenter leaned towards the correct object.
(a) (2 points) Let the parameter of interest, π, represent the probability that the long-run probability that Augie chooses correctly. Researches are interested to see if Augie understands human body cues (better than gussing).
Fill in the blanks for the null and alternative hypotheses.
H0 : Ha :
(b) (6 points) Based on the above context, conduct a test of significance to determine the p-value to investigate if domestic dogs understand human body cues. What conclusion will you draw with significance level of 10%? (If you use an applet, please specify which applet you use, and the inputs.)
(c) (5 points) Based on the above context, conduct a test of significance to determine the p-value to investigate if domestic dogs understand human body cues. What conclusion will you draw with significance level of 5%? (If you use an applet, please specify which applet you use, and the inputs.)
(d) (2 points) Are your conclusions from part (b) and (c) the same? If they are different, please provide an explanation.
(e) (5 points) Shown below is a dotplot from a simulation of 100 sample proportions under the assump- tion that the long-run probability that Augie chooses correct is 0.50. Based on this dotplot, would a 90% confidence interval for π contain the value 0.5? Explain your answer.
(f) (4 points) Compute the standard error of the sample proportion of times that Augie chose the object correctly.
(g) (5 points)
(h) (3 points) question?
(i) (4 points)
(j) (4 points) A.
Construct an approximate 95% confidence interval for π using the 2SD method. What is the margin of error of the confidence interval that you found in the previous
How would you interpret the confidence interval that you found in part (g)?
Which of the following is a correct interpretation of the 95% confidence level?
If Augie repeats this process many times, then about 95% of the intervals produced will capture the true proportion of times of choosing the correct objective.
About 95% times Augie chooses the correct objective.
If Augie repeats this process and constructs 20 intervals from separate independent sam- ples, we can expect about 19 of those intervals to contain the true proportion Augie chooses the correct objective.
(k) (4 points)
object 21 out of 35 times.
Conjecture how, if at all, the center and the width of a 99% confidence interval would change with these data, compared to the original 2SD 95% confidence interval.
The center of the confidence interval would . The width of the confidence interval would .
(l) (4 points) Suppose that we repeated the same study with Augie, and this time he chose the correct object 17 out of 35 times, and we also change the confidence level from 95% to 99%. Conjecture how, if at all, the center and the width of a 99% confidence interval would change with these data, compared to the original 2SD 95% confidence interval.
Suppose that we repeated the same study with Augie, and this time he chose the correct
The center of the confidence interval would The width of the confidence interval would
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1. Which best describes the difference between single cell and multicellular organisms? *
a. Single-cell organisms can perform all processes in one cell, but multicellular organisms need many cells to do specialized functions together.
b. Single-cell organisms need one cell to function, but multicellular organisms need lots of cells who all have the same job.
c. Single-cell organisms need many cells to do specialized functions together, but multicellular organisms can perform all processes in one cell.
d. Single-cell organisms need multiple cells with similar structures, but multicellular organisms need only one cell.
2. How does your brain move your arm? *
a. The brain sends a message to your bones to move your arm
b. The brain sends a message to your nerves to move your arm
c. The lungs send a message to your muscles
d. The muscles send a message to your brain
3. Which correctly explains the difference between the respiratory and circulatory system? *
a. The respiratory system includes your lungs and the circulatory system includes your heart
b. The respiratory system takes in oxygen and the circulatory system breaks down food
c. The respiratory system takes in water and carbon dioxide, but the circulatory system does not
d. The respiratory system includes the brain and the circulatory system includes to lungs
4. Which of the following is a learned behavior? *
a. Dimples when you smile
b. Ability to sing
d. Hair color
5. These are all examples of: *
6. Which of these does NOT make a new material? *
a. Burning a wooden log
b. Iron nail rusitng
c. Ice melting
d. Mysterious color change
Explain why: *
This is a required question
7. What would you want to put your drink it to keep it cold? *
Metal (good conductor)
Plastic (bad conductor)
Explain why: *
8. How does the sun play a role in the water cycle? *
a. Heats water and turns it into water vapor gas
b. Cools gas to make water droplets and clouds
c. Creates strong winds
d. Causing it to rain
9. What will happen when a metal chair is left outside in the hot sun? *
a. Increase in weight
b. Decrease in weight
c. Increase in size
d. Decrease in size
10. What would the weight of the lemonade be if the water is 3.0 grams, the ice is 2.5 grams, and the mixture is 0.25 grams? *
a. 5.75 g
b. 5 g
c. 6.25 g
d. 10.1 g
8.The unit price of market goods is $1. Each person has 8 hours to work each day.
Another couple, Sylvan and
van and Alex, have the same productivities: Sylvan is identical to Rajan, while Alex
and Esther are identical.
Esther and Rajan both engage in market work. Sylvan works full time at home, so only Alex works in the
a) Given this information, which couple has the higher opportunity cost of home produced goods?
Explain how you determined this. You can add a diagram if that helps, but you are not required
to include one.
b) Can you determine which couple has the higher utility? Explain why or why not.
Suppose now that value of market production for both Alex and Esther increased to $12/per hour.
c) Explain the change in the household joint production possibility frontier generated by this
d) Explain what would happen to each couple’s choice of both household and market produced
goods, using an analysis by means of income and substitution effects.
e) What changes in time allocation for each couple that would be necessary to produce and
consume this new bundle? Briefly explain your reasoning.