1.What values of x,  y and z balance the equation:

x SO₂    +   y H⁺   +    Cr₂O₇^2– → 3 SO₄^2–  + z Cr³⁺ +   H₂O ?

2.What is the stoichiometric ratio of solid phosphorus (P) to chlorine gas (Cl₂) required to give phosphorus trichloride (PCl₃)?

3.What is the mass fraction of carbon in aniline C₆H₅NH₂ expressed as a percentage?

4.

Arrange the following in order of increasing amount of substance:

(i)            24 g of sodium metal
(ii)           40 g of carbon dioxide
(iii)          4 g of hydrogen gas

5.What volume of 0.220 M NaOH(aq) should be used to prepare 303 mL of 2.02 x 10^–3 M NaOH(aq) ?

6.

Gold hydroxide Au(OH)₃ is prepared for electroplating gold by the following reaction

2 KAuCl₄(aq) + 3 Na₂CO₃(aq) + 3 H₂O(l) → 2 Au(OH)₃(s) + 6 NaCl(aq) + 2 KCl(aq) + 3 CO₂(g)

The following amounts are mixed KAuCl₄ = 2.3 mol, Na₂CO₃ = 7.0 mol and H₂O = 10 L.
What is the limiting reagent, and what amount of gold hydroxide is formed if the reaction is ‘stoichiometric’? (M (H₂O) = 18 g mol^–1, ρ(H₂O) = 1.0 kg L^–1)

Select one:

a. Na₂CO₃ , 1.57 mol

b. KAuCl₄ , 4.6 mol

c. KAuCl₄ , 2.3 mol

d. H₂O , 6.9 mol

e. KAuCl₄ , 6.9 mol

7.

What are the chemical formulae for the following acids: nitric acid, acetic acid, hydrochloric acid, sulfuric acid?

Select one:

a. H₂NO₃, CH₃COOH, HClO₂, H₂SO₃

b. HNO₂, CH₃COOH, HCl, HSO₃

c. HNO₃, CH₃CH₂OH, HCl, H₂SO₃

d. HNO₂, CH₃CH₂OH, HClO, H₂SO₄

e. HNO₃, CH₃COOH, HCl, H₂SO₄

1:

A piece of solid magnesium is reacted with hydrochloric acid to form hydrogen gas:

Mg_(s) + 2 HCl_(aq) à MgCl_2(aq) + H_2(g)

What volume of hydrogen gas (in mL) is collected over water at 25 °C by reaction of 0.450 g of Mg (AW = 24.3 g/mol) with 5.00 mL of 1.0 M HCl? The barometer records an atmospheric pressure of 762 torr and the vapor pressure of water at this temperature is 23.35 torr.

2:

Given the following balanced chemical reactions and their enthalpies, calculate the enthalpy of reaction for 2C(s) + H₂(g) ---> C₂H₂(g):

3:

A 10.00 mL aliquot of 0.100 M NaOH is added to 15.00 mL of 0.100 M HCl (don't try this at home, since acids and bases react violently to produce water and heat!) in a coffee cup calorimeter. The initial temperature of the two dilute liquids were both 25.0 ºC and the final temperature of the mixture was found to be     37.8 ºC. What is the (molar) heat of reaction for the neutralization?

4:

The heat of vaporization for toluene is 38.06 kJ/mol and the normal boiling point is 111 ºC. Using the Clausius-Clapeyron equation, calculate the vapor pressure of toluene at room temperature (25 ºC).

5:

What is the equilibrium constant for a weak acid HA that dissociates 1% at an initial concentration of 0.05 M according to the following balanced chemical equation?

HA_(aq) ↔ H⁺_(aq) + A^-_(aq)

47) Receptors seeing stimuli is ___________, which means nothing until the brain accomplishes ___________.

A) perception; sensation                 B) sensation; motivation            

C) motivation; perception                 D) sensation; perception

48) Taste and olfactory senses depend on _______________ for sensation to occur.

A) odorants               B) acids               C) chemicals in solution            D) chemicals

50) This taste category does not rely on GPCRs for sensation to occur.

A) umami               B) sweet               C) sour               D) bitter

51) The pancreas secretes ___________ and _____________, which perform opposite functions in our bodies.

A) glycogen; insulin            B) glucagon; insulin            C) glucose; insulin            D) glycerin; insulation

52) The T8 spinal nerve pair exits the vertebral column _______________ while the C5 spinal nerve pair exits the vertebral column ________________.

A) below vertebra T8; above vertebra C5               B) above vertebra T8; above vertebra C5

C) below vertebra T8; below vertebra C5               D) above vertebra T8; below vertebra C5

53) Some large arteries proximal to the heart are sensitive to stretch of blood vessels. This stretch indicates blood pressure. Which of the below options best fits the receptor type that is being described above?

A) mechanoreceptors that are also interoceptors     B) thermoreceptors that are also interoceptors

C) mechanoreceptors that are also exteroceptors     D) thermoreceptors that are also exteroceptors

57) Antidiuretic hormone (ADH) ________.

A) increases urine production               B) promotes dehydration

C) is produced by the anterior pituitary               D) secretion is inhibited by alcohol

71) Which of the following appears to exert the most direct influence over autonomic functions?

A) hypothalamus               B) midbrain               C) reticular formation               D) medulla oblongata

75) Which of the following is mismatched?

A) gallbladder contracts to expel bile; parasympathetic               B) bronchiole dilation in lungs; sympathetic

C) peni ejaculation; sympathetic               D) promotes urination; sympathetic

In your own words.Please give a response to each statement one for statement A and one for statement B. A response can be agree-disagree (why or why not). Or maybe anything you would like to add.

A)Stem cells have two important properties. First, they are able to reproduce themselves many times. Second, they can produce all the different cell types needed to make a human being, for instance heart cells, skin cells, nerve cells and so on. Stem cells can grow into brain cells, and as a result, have the potential to repair brain damage caused by neurological conditions, such as dementia (Alzheimer’s Society, 2020). Stem cell therapy for Alzheimer’s may be able to improve functional memory, regenerate neurons, improve overall functional recovery, and replace damaged cells with healthy cells (Cona, 2020). This would then potentially benefit the Alzheimer’s patient and their families by delaying the onset of the disease. Therefore, the patient wouldn’t lose their cognitive function and the family will be able to spend more time with their loved one and still remember them as how they were, not by their Alzheimer’s. While I see the ethical issues with this, I believe it is worth a shot. Why not try a therapy that can benefit the patient and their family.

B)The difference between disposing of embryos and other tissues is that embryos may one day become a life. Scott Gatz described it to NPR as feeling “as if our future children are showing up once a year to confront us” (Fraga, 2016). This is because they receive a letter from their IVF clinic once a year asking them to decide if the embryos should be stored, destroyed, donated to research, or donated to another couple. This is a hard choice to make for people in this situation. Destroying them is like killing future kids and donating them would mean that they no longer have access to embryos should they decide to have more kids later on. The same NPR article reports that many of these families come to see the embryos as human life, and some go so far as to have funerals for the embryos (Fraga, 2016). This is a complex issue that should be discussed more, it is hard to for these couples to decide what to do with the left over embryos and they should be better educated on what their options are in regard to this decision.

If a cobbler buys leather for €100 and thread for €50 and uses them to produce and sell €400 worth of shoes to consumers, the contribution to GDP is

1. €50.
2. €150.
3. €550.
4. €400.

A multiple-choice question with one possible answer.(Required)

Thomas Malthus argued that

1. an ever increasing population is constrained only by the food supply, resulting in chronic famines.
2. private charities and government aid will improve the welfare of the poor.
3. labour is the only true factor of production.
4. technological progress will continuously generate improvements in productivity and living standards.

A multiple-choice question with one possible answer.(Required)

To increase growth, governments should do all of the following except

1. nationalize major industries.
2. encourage research and development.
3. encourage foreigners to investment in your country.
4. encourage saving and investment.

A multiple-choice question with one possible answer.(Required)

Once a country is wealthy,

1. it may be harder for it to grow quickly because of the diminishing returns to capital.
2. it is nearly impossible for it to become relatively poorer.
3. it no longer needs any human capital.
4. capital becomes more productive due to the "catch-up effect."

A multiple-choice question with one possible answer.(Required)

Which of the follows is a reasonable measure of the standard of living in a country

1. the growth rate of nominal GDP per person.
2. real GDP.
3. nominal GDP
4. real GDP per person.

A multiple-choice question with one possible answer.(Required)

Which of the following is probably the least relevant to a country’s growth rate?

1. the education of the workforce
2. short-term interest rates
3. infrastructure such as roads or computer networks
4. legal restrictions on capital mobility and investment

A multiple-choice question with one possible answer.(Required)

If all other factors, including human capital, were the same, then compared with Europe, the rate of return on investment in Brazil should be

1. indeterminate, because the emerging markets are not in equilibrium
2. lower, due to a tradition of central planning
3. approximately the same, reflecting competitive pressure
4. higher, signaling a greater need for new plants and equipment

A multiple-choice question with one possible answer.(Required)

Which of the following does promote convergence between nations?

1. international patent protection
2. no foreign trade
3. no foreign direct investment
4. equal access to technology

If a cobbler buys leather for €100 and thread for €50 and uses them to produce and sell €400 worth of shoes to consumers, the contribution to GDP is

1. €50.
2. €150.
3. €550.
4. €400.

A multiple-choice question with one possible answer.(Required)

Thomas Malthus argued that

1. an ever increasing population is constrained only by the food supply, resulting in chronic famines.
2. private charities and government aid will improve the welfare of the poor.
3. labour is the only true factor of production.
4. technological progress will continuously generate improvements in productivity and living standards.

A multiple-choice question with one possible answer.(Required)

To increase growth, governments should do all of the following except

1. nationalize major industries.
2. encourage research and development.
3. encourage foreigners to investment in your country.
4. encourage saving and investment.

A multiple-choice question with one possible answer.(Required)

Once a country is wealthy,

1. it may be harder for it to grow quickly because of the diminishing returns to capital.
2. it is nearly impossible for it to become relatively poorer.
3. it no longer needs any human capital.
4. capital becomes more productive due to the "catch-up effect."

A multiple-choice question with one possible answer.(Required)

Which of the follows is a reasonable measure of the standard of living in a country

1. the growth rate of nominal GDP per person.
2. real GDP.
3. nominal GDP
4. real GDP per person.

A multiple-choice question with one possible answer.(Required)

Which of the following is probably the least relevant to a country’s growth rate?

1. the education of the workforce
2. short-term interest rates
3. infrastructure such as roads or computer networks
4. legal restrictions on capital mobility and investment

A multiple-choice question with one possible answer.(Required)

If all other factors, including human capital, were the same, then compared with Europe, the rate of return on investment in Brazil should be

1. indeterminate, because the emerging markets are not in equilibrium
2. lower, due to a tradition of central planning
3. approximately the same, reflecting competitive pressure
4. higher, signaling a greater need for new plants and equipment

A multiple-choice question with one possible answer.(Required)

Which of the following does promote convergence between nations?

1. international patent protection
2. no foreign trade
3. no foreign direct investment
4. equal access to technology

A hospital is an acute care short-term stay and emergency medical center that also includes medical departments such as, surgical, obstetrics, infectious disease, radiology, laboratory and mental health.

Scenario

You are the administrator of a medium-sized hospital. The Director of Human Resources has been summoned to an executive team meeting in an effort determine why an unusual number of nursing staff leaving for other employment. During the discussions, the Director of Nursing provides her thoughts re- garding why the nurses may be less productive and why some are departing. She states that the primary reason is salaries/benefits. A charge nurse thinks the reason might be working conditions, especially involving patient load in the various nursing units. Overall morale is low, which is adversely affecting pro- ductivity. This has also resulted in some patient quality outcomes discovered by the Continuous Quality Improvement team.

During the discussion, the Senior Director of Admissions shares some experiences she had with a for- mer employer--that the nursing staff tended to remain longer with the employer based on good working conditions, specifically in the area of learning new skills, obtaining additional certifications, licensure, and cross-training for other areas not usually assigned. She feels that these measures result in higher reten- tion and patient quality outcomes.

After the meeting, you meet with the Director of Nursing and Human Resources Director, who is also in charge of all training and development for the hospital. As the administrator, you consider developing
a small group to explore the feasibility of providing more skills development and training to your current nursing staff. Before implementing this directive, consider the following:

Question 1

How would you determine which skills, certifications, and licensure would be effective in retaining the current nurses?

Question 2

Is there a direct correlation between additional skills and retention and motivation of the nurses?

Question 3

How would you determine who would be provided the skills development? Are all skills for all nurses feasible?

Question 4

How would you determine if additional compensation would be required for trained nurses?

Question 5

How would you quantitatively determine the cost of this initiative?

____ 1.. Which of the following statements about basic economic inputs is false?

1. a. Natural resources are basic economic inputs.

2. b. Physical capital and human capital are both basic economic inputs.

3. c. Physical capital increases if we build more oil drilling rigs.

4. d. Human capital can never increase unless our population grows.

____ 2. Researchers have investigated citizen’s demand for local hiking trails. Assume the area currently has an average quantity of hiking trails. Which of the following statements is correct? As the quantity of lo-cal hiking trails increases, citizens demand for additional hiking trails

1. a. shows that people’s marginal cost increases.

2. b. shows that people’s marginal cost decreases.

3. c. shows that people’s marginal willingness to pay increases.

4. d. shows that people’s marginal willingness to pay decreases.

____ 3. Consider the market for paper. The production of paper uses a lot of water. If producing paper causes pollution downstream, the market outcome (vs. the efficient outcome) leads to

1. a. the market price will be too low and the market quantity produced will be too low.

2. b. the market price will be too low and the market quantity produced will be too high.

3. c. the market price will be too low and the market quantity produced will be correct.

4. d. the market price will be too high and the market quantity produced will be correct.

____ 4. In which of the following situations is there a “market failure”?

1. a. In the market for coal, mountain top removal of coal in West Virginia causes increased pollution in local streams.

2. b. A government’s unsuccessful advertising campaign for electric cars has reduced the demand for them.

3. c. The government fails to provide leases to oil producers thus decreasing the expected supply of oil.

4. d. Due to the price of oil decreasing, many new companies providing support to oil producers in the U.S. are going bankrupt.

Figure 2

The diagram below pertains to the supply of copper. SSBAxyquantityprice

____ 5. Refer to Figure 2. All else equal, a technological advance in producing copper would cause

1. a. a move from x to y.

2. b. a move from y to x.

3. c. a move from SA to SB.

4. a move From SB to SA.

Many families choose to place their elderly loved ones in this assisted living facility because it has a reputation as a caring and passionate provider of care throughout the United States. The facility has 225 efficiency apartments, furnished and equipped with the latest technology, in this segment of the health care industry. The assisted living facility administrator has provided some thoughts regarding the future of the facility, especially regarding some recently acquired survey results. Although most scores were very good, there seems to be a trend of some scores actually dropping, which causes concern. These lower scores seem to be associated with issues related to communications between the assisted living staff and resident family members, specifically among the Nursing Assistants, Registered Nurses, Social Services, and family members. Although the patients are providing high scores for their experiences, the families are more critical and thorough with the surveys.The assisted living administrator has done some research regarding the Arizona Health Care Assisted Living Accreditation Agency and discovered that the agency possesses a very highly touted program that will provide postmodern systems, processes, and procedures to ensure that the assisted living facility complies with the very highest standards, including refreshed criteria for caregivers, especially in the areas of communication and effective patient-family-caregiver protocols. The administrator also found the agency has an initial accreditation process that involves a comprehensive internal audit of all facility functions. Every department, including executive management, human resources, accounting, nursing, social services, dietary, grounds/maintenance, and others will be thoroughly inventoried, including their policies, procedures, and the review of all employee records. Once approved, the assisted living facility will be provided an initial accreditation. After one year, the assisted living facility will apply for reaccreditation on an annual basis. The executive staff, upon the assisted living administrator’s recommendation, has approved the initiative of gaining this high level of accreditation. The Vice President of Human Resources has been given the directive of pursing the accreditation. What type of accreditation does an assisted living facility need? What are the pros and cons for accreditation? What tools would you use to evaluate the and cons? What stakeholders would you include? How would you ensure your primary, secondary, tertiary stakeholders are informed?

okay so I took this quiz and these are the answers I put. there are 13 questions but I am not sure what I am getting wrong. all I know is I got 9 out of 13 right.

• A population's dispersion pattern is related to

1. the likelihood of competition between individuals.
2. individuals' chance of finding a mate.
3. Both
4. neither

• A population has the greatest number of individuals

1. when numbers are near (or at) the carrying capacity.
2. when numbers are near half of the carrying capacity.
3. when numbers are at a minimum (near zero)
4. (none of the above - population sizes do not change.)

• A population's growth rate is likely to be highest

1. when numbers are near (or at) the carrying capacity.
2. when numbers are near half of the carrying capacity.
3. when numbers are at a minimum (near zero)
4. (none of the above - population growth rates do not change.)

• The size of a population

1. always increases to a maximum, then remains constant for ever.
2. may increase and decrease cyclically.
3. always increases to a maximum, then decreases to zero.
4. (none of the above)

• A life table is useful for

1. describing changes in population size over a range of time.
2. describing the range of individual reproductive rates in a population.
3. (both)
4. (neither)

• As song sparrow population density increases,

1. the average reproductive success of individual song sparrows tends to increase.
2. the average reproductive success of individual song sparrows tends to decrease.
3. the average reproductive success of individual song sparrows does not change.
4. the average reproductive success of individual song sparrows is unpredictable.

• Mosquitos have a life history that is near the extreme of

1. r-selection.
2. K-selection.
3. (both)
4. (neither)

• During the early and middle twentieth century, there was

1. a sharp increase in human birth rate.
2. a sharp decrease in human death rate.
3. (both)
4. (neither)

True/False:

• If you ask a population ecologist, all the individuals in a population belong to the same species. : True
• A single population might exist in multiple territories that do not overlap, with no migration of individuals between territories.,true
• A population's carrying capacity depends on the action of parasites. fasle
• Most populations have a random dispersion pattern. False
• In general, animals are most likely to die at an age near their maximum possible lifespan. fasle