Kinetics Quiz Instructions: To receive full credit you must show ALL of your work clearly. Also be sure to: A) Include units throughout the problem and with your final answer. B) Circle your final answer-no circle no credit for your final answer. C) Clearly define variables D) State any assumptions E) Write a chemical equation if needed for a problem. F) Provide a neatly labeled table for any problem where one is needed. And remember, getting the right answer for the wrong reasons will not get you full credit. (20 points) The rate of the reaction NO₂ + CO → NO + CO₂ depends only on the concentration of nitrogen dioxide below 225°C. At a temperature below 225°C, the following data were collected. time (s) 10 1.20 x 10³ 3.00 x 10³ 4.50 x 10³ 9.00 x 10³ 1.80 x 104 1. [NO₂] (mol/L) 2. What is the rate constant for this reaction? 0.500 0.444 0.381 0.340 0.250 0.174 What is the order of the reaction in respect to NO₂? 3. What would be the concentration of NO, after 10 hours?
Answers
1. The rate constant for the reaction is 0.0974 mol/L*s.
2. The order of the reaction with respect to NO₂ is 1.
3. The concentration of NO after 10 hours = 0.250 mol/Ls / 0.0974 mol/Ls / [0.500 mol/L
How did we arrive at these values?1. To determine the rate constant for the reaction, we can use the rate law equation:
rate = k[NO₂][CO]
Since the rate of the reaction depends only on the concentration of nitrogen dioxide, we can assume that the concentration of carbon monoxide is constant. Therefore, we can simplify the rate law equation to:
rate = k[NO₂]
We can use the data provided to calculate the rate of the reaction at each time point:
time (s) [NO₂] (mol/L) rate (mol/L*s)
10 0.500 0.250
1.20 x 10³ 0.444 0.222
3.00 x 10³ 0.381 0.1905
4.50 x 10³ 0.340 0.170
9.00 x 10³ 0.250 0.125
1.80 x 104 0.174 0.087
We can plot the rate of the reaction as a function of the concentration of nitrogen dioxide:
rate (mol/L*s) [NO₂] (mol/L)
0.250 0.500
0.222 0.444
0.1905 0.381
0.170 0.340
0.125 0.250
0.087 0.174
The plot shows that the rate of the reaction is proportional to the concentration of nitrogen dioxide. Therefore, the reaction is first-order with respect to NO₂. We can use the data to calculate the rate constant by using the first-order rate law equation:
rate = k[NO₂]
Taking the natural logarithm of both sides:
ln(rate) = ln(k[NO₂])
ln(rate) = ln(k) + ln[NO₂]
We can plot ln(rate) as a function of ln[NO₂]:
ln(rate) ln[NO₂]
-1.386 -0.693
-1.504 -0.810
-1.663 -0.963
-1.771 -1.078
-2.079 -1.386
-2.440 -1.752
The slope of the line is equal to the order of the reaction with respect to NO₂, which is 1. The y-intercept is equal to ln(k), so we can calculate the rate constant by taking the exponential of the y-intercept:
ln(k) = -2.331
k = e^(-2.331) = 0.0974 mol/L*s
Therefore, the rate constant for the reaction is 0.0974 mol/L*s.
2. The order of the reaction with respect to NO₂ is 1.
3. To determine the concentration of NO after 10 hours, we can use the rate law equation:
rate = k[NO₂][CO]
Since the rate of the reaction depends only on the concentration of nitrogen dioxide, we can assume that the concentration of carbon monoxide is constant. Therefore, we can simplify the rate law equation to:
rate = k[NO₂]
We can use the data provided to calculate the rate of the reaction at the initial time point:
time (s) [NO₂] (mol/L) rate (mol/L*s)
10 0.500 0.250
We can use the rate law equation to calculate the rate constant:
rate = k[NO₂]
0.250 mol/Ls = 0.0974 mol/Ls * [0.500 mol/L]
[NO] = rate/k[NO₂]
[NO] = 0.250 mol/Ls / 0.0974 mol/Ls / [0.500 mol/L
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Related Questions
Animals (sometimes in the form of a monster) often must be defeated in a myth before a character is able to continue their journey or keep their life. How does this symbolize the obstacles people face in real life? What is an example of an obstacle you have faced that mirrors, even loosely, the obstacles monsters present in myths and legends?
The idea of a “werewolf” or similar shapeshifter is found in many, many cultures. Why do you think this myth is so common?
How do the myths and legends about animals help us infer the ways in which certain animals were important to a society?
Cryptids exist in almost every known culture. Why do you think the idea of an animal that exists outside the realm of the knowable or provable is so intriguing?
Answers
The presence of animals or monsters in myths and legends symbolizes the obstacles people face in real life. Just like the characters in the myths, we also encounter challenges or enemies that we must overcome before we can continue our journey or achieve our goals. These obstacles can take many forms, such as financial struggles, health issues, personal conflicts, or societal barriers.
An example of an obstacle I faced that mirrors the obstacles monsters present in myths and legends is my fear of public speaking. This fear was like a monster that I had to defeat before I could advance in my academic and professional career. Just like the heroes in the myths, I had to confront my fear, learn how to manage it, and develop the skills to communicate effectively in public.
The myth of werewolves and shapeshifters is so common because it taps into our primal fear of the unknown and the uncontrollable. These myths allow us to explore our own primal instincts and the idea of transformation, both physical and emotional. They also provide a way to explain the unexplainable, such as sudden and violent changes in behavior or appearance.
Myths and legends about animals help us infer the ways in which certain animals were important to a society. For example, if a culture has a myth about a powerful and wise owl, we can assume that owls were seen as significant creatures and may have held spiritual or cultural significance. These myths also reflect the human relationship with animals, whether it be one of fear, admiration, or reverence.
The idea of cryptids, animals that exist outside the realm of the knowable or provable, is so intriguing because it challenges our understanding of the natural world and the limits of our knowledge. These creatures represent a sense of mystery and wonder, and the possibility that there is more to the world than what we currently know or understand. Additionally, the search for cryptids can be seen as a form of adventure or exploration, as people seek to uncover new discoveries and push the boundaries of what is known.
Sky has been having trouble with her natural gas heater. It keeps burning through natural gas, but it’s not keeping the house as warm as it used to. Sky’s dog, Ford, wakes her up in the night. Ford is freaking out. Sky has a splitting headache. (Sky doesn’t know it, but oxygen isn’t bonding well to her hemoglobin. ) Ford insists they leave the house. Sky walks into the front yard. As they leave the house, her headache clears. If Ford hadn’t woken Sky up, Sky would probably have died
Answers
In the paragraph, a malfunctioning natural gas heater in Sky's home is described as having the potential to cause carbon monoxide poisoning.
When someone inhales too much carbon monoxide gas, it can cause carbon monoxide poisoning. Uncompleted combustion of fuels like natural gas, oil, or wood results in the production of carbon monoxide, an odourless, tasteless gas. It is a toxic gas that can result in symptoms like nausea, confusion, weakness, headaches, dizziness, and even death. Any enclosed or inadequately ventilated area, such as a home with a gas heater, a garage with an engine running, or an industrial environment, might result in carbon monoxide poisoning. To receive fast treatment and avoid serious complications from carbon monoxide poisoning, early diagnosis of the condition is crucial.
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Contrast Maslow’s and Rogers’ theories of personality.
Maslow proposed the importance of congruence whereas Rogers proposed a hierarchy of needs.
Maslow advocated congruence whereas Rogers proposed that people have an internal and external locus of control.
Maslow advocated that people fulfill their needs while Rogers proposed that people must consider others while doing so.
Maslow proposed a hierarchy of needs whereas Rogers proposed the importance of congruence.
Answers
Maslow proposed a hierarchy of needs, consisting of five levels, which include physiological needs, safety needs, love and belonging needs, esteem needs, and self-actualization needs. According to Maslow, people have a natural tendency to satisfy their lower-level needs before moving on to the higher ones. Once the basic needs are met, individuals strive for self-actualization, which is the realization of their full potential and fulfillment of their goals.
On the other hand, Rogers proposed that individuals have an innate tendency towards growth and self-actualization, which can be achieved through congruence between the self-concept and the ideal self. Congruence refers to the degree of match between a person’s self-concept and their experience. Rogers believed that psychological problems arise when the self-concept and the ideal self are not aligned. In order to achieve congruence, individuals need unconditional positive regard, which is acceptance and love from others regardless of their behavior.
Therefore, Maslow and Rogers had different views of what motivates people and how individuals achieve their potential. While Maslow believed that individuals must fulfill their needs in a specific order to reach self-actualization, Rogers emphasized the importance of congruence between the self-concept and the ideal self to achieve personal growth and fulfillment.
Dr. Bartos is a psychologist who believes that pet therapy leads to less anxiety. She hopes to fund a research project to demonstrate this so she can promote animal adoption at the local shelter where she volunteers. She is proposing an experimental study to examine this belief
Answers
Recruit participants who experience anxiety.
Randomly assign participants to one of two groups: a treatment group that receives pet therapy or a control group that does not receive pet therapy.
Measure the anxiety levels of both groups before and after the study using a standardized anxiety questionnaire.
Analyze the data to determine if there is a statistically significant difference in anxiety levels between the treatment group and the control group.
Interpret the findings and draw conclusions about the effectiveness of pet therapy in reducing anxiety.
If the study results show that pet therapy significantly reduces anxiety levels in the treatment group, Dr. Bartos can use these findings to promote animal adoption and the use of pet therapy as a treatment for anxiety.
Evaluate the impact which the 16 Days of Activism campaign
has had on
Gender Based vidence
in South Africa
Answers
explanation
hope it helps
C. Using the information in the graph, explain how changes in grain yields may affect rural populations in countries in stage 3 of the demographic transition.
D. Explain ONE limitation of the data in showing regional patterns of consumption.
Answers
The relationship between grain yields and population growth for countries in stage 3 of the demographic transition. Stage 3 is characterized by declining birth rates and continuing population growth, as well as increasing urbanization and industrialization.
What does the grain yield shows?In general, an increase in grain yields can lead to an increase in food security and economic development, which can have positive effects on rural populations in stage 3 countries. With more food available, rural populations may experience better nutrition, health, and quality of life.
What is the relationship between grain yields and rural populations in stage 3 countries?It is crucial to keep in mind that the connection between grain yields and rural populations in stage 3 countries is complicated and affected by a number of variables. For instance, rural populations may actually decrease if higher grain yields cause more urbanisation and emigration to cities. Moreover, modifications to agricultural methods or land usage may have detrimental effects on the environment.
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If cosx=1/3, then what is the positive value of sin 1/2x, in simplest radical form with a rational denominator?
Answers
First, we need to find the value of sin(x), which we can do using the Pythagorean identity:
sin^2(x) + cos^2 (x) = 1
Since cos x = 1/3, we have:
sin^2 (x) + (1/3)^2 = 1
sin^2 (x) = 8/9
sin x = sqrt(8)/3 * sqrt(9)/sqrt(9)
= +/- (2/3)sqrt(2)
We take only positive radical since sine is positive in first and second quadrants.
Now that we know sin x, let's find sin((1/2)x):
Using the half-angle formula for sine:
(sin((1/2)x))^±²= [1-cos(x)] / ²
we get:
(sin((½)x))^±²= [¹-³]/₂=[⁴]/₆≡[+/-]√[4]/√6 ≡ [+/−][ √4 ]/[ √6 ]
Therefore,
the positive value of sin ((½)x):
[sin ((½)x)]° ≡ (+)[ √4 ]/[ √6 ]
° ≡ (∛96)/(3∛{})
≈ ..
Hence, the answer is approximately equal to ±0.177.
How could the movements of objects across the sky have led to a conclusion that Earth is the center of the Universe? I will award brainliest to person it’s best answer. Must be correct. If wrong: Reported answer
Answers
The movements of objects across the sky could have led to a conclusion that Earth is the center of the Universe through the geocentric model, which was widely accepted in ancient times. This model proposed that the Earth is stationary and located at the center of the Universe, with all other celestial bodies, including the Sun, Moon, and planets, orbiting around it.Observations of the sky, including the apparent movements of the Sun, Moon, and planets, were consistent with this model, as they appeared to move in circular paths around the Earth. However, as astronomers made more precise observations and measurements, they began to notice that the geocentric model had limitations and inaccuracies.Eventually, the heliocentric model, which proposed that the Sun was at the center of the Solar System, replaced the geocentric model. This was based on the observations of Copernicus, Galileo, and other astronomers who discovered evidence that the Earth and other planets revolved around the Sun, not the other way around.
How do you explain the timing of the U.S. Supreme Court's 1954 Brown decision, which declared that "Separate educational facilities are inherently unequal"? Could this decision have come twenty years earlier? Fifty years earlier? Why or why not?
Answers
Answer:
I believe that the timing of the U.S. Supreme Court's 1954 Brown decision, which declared that "Separate educational facilities are inherently unequal," can be explained by several factors.
Firstly, it is important to note that the Brown decision was the culmination of a long legal battle against segregation in education that had been ongoing since the late 19th century. The National Association for the Advancement of Colored People (NAACP) had been challenging segregation in education since the 1930s, but it wasn't until the 1950s that the organization had the legal and political power to push for a major change.
Secondly, the timing of the Brown decision can also be attributed to the political and social climate of the 1950s. The civil rights movement was gaining momentum, and there was growing public pressure to address issues of racial inequality in all areas of society, including education.
Finally, the Brown decision was made possible by the appointment of Earl Warren as Chief Justice of the Supreme Court in 1953. Warren was a progressive and believed strongly in civil rights, and his leadership was instrumental in pushing the Court to issue a bold and sweeping ruling on segregation in education.
Overall, while the Brown decision could not have come 20 or 50 years earlier due to the political and social climate of the time, it was the result of a long and persistent legal and social struggle against segregation in education.
Sources:
The History Channel. (n.d.). Brown v. Board of Education. Retrieved from https://www.history.com/topics/black-history/brown-v-board-of-education-of-topeka
U.S. Department of State. (n.d.). The Civil Rights Act of 1964 and the Equal Employment Opportunity Commission. Retrieved from https://history.state.gov/milestones/1961-1968/civil-rights-act-1964
Explanation:
The hypothalamus sends a message hormone to the pituitary gland. What is the response of the pituitary gland? A. The pituitary gland activates specific areas of the brain based on flight or fight. B. The pituitary gland interprets the messenger hormone and supplies what is needed for the body. C. The pituitary gland will adjust the body's spatial recognition based on the message hormone. W
Answers
Answer: B
Explanation: The role of the pituitary gland is to monitor the body through hormones.
Local Education Requirements for Entry-Level EMT, Firefighter, and Paramedic Positions
Take the time to research the education requirements in your area. Most likely, these will be based on the state requirements for first responders. You may use the Internet to conduct your research or contact your local fire department and conduct a formal interview. Present a short oral report describing your findings and offer a plan for a person who is interested in becoming a firefighter, EMT, or paramedic.
Assignment should include: a description of local and/or state education requirements, and a detailed plan to complete the educational requirements. Oral report should be three- to five- minutes long.
All submissions should include proper grammar, mechanics, and sentence structure, as well as a works-cited page or bibliography.
Question # 1
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Identify and describe the local education requirements for entry-level EMT, firefighter and Paramedic positions.
Upload your description of local and/or state education requirements, your detailed plan to complete the educational requirements, and your three- to five minutes oral report.
Answers
For entry-level EMT roles, EMT-Basic certification is often the very minimum requirement. It often involves finishing a training programme and can be achieved through community colleges or technical schools.
What academic prerequisites must someone meet to become an EMT or paramedic?You must possess a high school diploma or a GED in order to work as an EMT. Before enrolling in a postsecondary emergency medical technology programme, EMTs must obtain their CPR certification. These courses take one to two years but do not lead to degrees.
How long is the paramedic training programme?There is a two-year Emergency Medical Care diploma programme. Accredited institutions also provide this certification, and those who complete it can register as paramedics with the Health Professions Council of South Africa.
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What does the explanation of your cryptid reveal about the concerns, lifestyles, or beliefs of the culture in which it developed?
My Cryptid was: An unknown or contested presence of animals or other species is studied and sought for in the pseudoscience known as cryptozoology. It's improbable that there are many cryptids, but it's possible that there are a few. In fact, National Geographic has confirmed the veracity of two cryptids that were previously thought to be fakes: Hogzilla and the Congo Elephants. A branch of cryptozoology called cryptobotany studies plants that are mythical, folkloric, or whose existence has not been proven.
Answers
Answer:
look at Explanation
Explanation:
The explanation of the cryptid and the existence of cryptozoology reveals the cultural beliefs and curiosity surrounding the unknown and mysterious. It highlights the human fascination with creatures that have not been officially discovered or proven to exist, and the desire to understand and uncover the mysteries of the natural world. Additionally, the study of cryptids may reflect a cultural concern with the environment and the impact of human activity on the habitats of these creatures. The development of cryptozoology may also reflect a belief in the existence of creatures beyond what is currently known or accepted by mainstream science, indicating a willingness to challenge established beliefs and pursue unconventional ideas.
The concept of locus of control in social-cognitive theory relates to humanistic theories of personality in that humanistic theories of personality propose that people
are self-determined
change throughout their lifespan
Answers
What is your Western zodiac sign?
What traits are common to that sign?
Do you think the sign accurately describes you? Why or why not?
What is your Chinese Zodiac sign?
What traits are most associated with that sign?
How do you think those traits are reflected in the “official” myth of the Chinese zodiac?
Do you think this sign accurately describes you? Why or why not?
What is your heavenly element in the Chinese Zodiac? What traits are associated with it?
What aspects of your heavenly element do you find MOST accurate OR inaccurate?
Combining all three parts of your zodiac, do you feel the elements synthesize coherently and make sense together? Do you find them contradictory? Explain why.
What is your overall impression or thoughts about these Zodiacs?
(Please number the answers<3)
Answers
Answer: (confused on how this is AP but kinda fun)
1. Aries
2. independent, adventurous, passionate, competitive, impulsive
3. Yes, because I like to do things by myself and at times am quite spontaneous. I am definitely competitive athletically and academically and I love to travel.
4. Dog
5. loyal, protective, sensitive, honest, reserved, responsible, hardworking, stubborn
6. The myth of the Chinese zodiac tells the story of a race among twelve animals, with the Dog finishing in 11th. But the Dog is praised for its loyalty and honesty in helping the Rooster cross a river, which shows the Dog's protective and trustworthy nature that is also reflected in its zodiac traits. This myth also shows the Dog's reserved nature as it quietly helps the Rooster without seeking recognition or reward for its actions.
7. Somewhat, not all the traits are very accurate. I would agree that I am protective and hardworking the most. And maybe a little stubborn and reserved at times.
8. Fire. It is associated with independence, loyalty, impulsivity, determination, protective nature, confidence
9. I find impulsivity, determination, and independence to be the most accurate.
10. An Aries is usually independent, bold, and impulsive, while a Dog sign person is loyal, honest, and protective. These traits can work well together and with the fire element, which symbolizes passion, can enhance both Aries and Dog traits.
But, there are some contradictions like how an Aries' impulsiveness goes completely against a Dog's cautiousness.
11. Because the Western zodiac is more specific, I find it much more accurate than the Chinese zodiac. I'm not superstitious by any means, but I do think it is a fun way to identify some key characteristics about yourself.
5. Write an equation for each line.
!! please help !!
Answers
Explanation:
Refer to pic...........
Question: How is the bureaucracy held accountable by congressional oversight and
by the president in carrying out goals of the administration?
Answers
Answer:
The bureaucracy is held accountable by congressional oversight and by the president in several ways:
Congressional Oversight: Congress has the power to oversee and investigate the actions of the bureaucracy. Congress can hold hearings, request documents and reports, and ask agency officials to testify before congressional committees. Through these actions, Congress can hold the bureaucracy accountable for its actions and ensure that it is carrying out the goals of the administration.
Budgetary Control: Congress has the power of the purse, which means it controls the funding for government agencies and programs. Through the budget process, Congress can set funding levels and allocate resources to specific agencies and programs. This gives Congress significant leverage over the bureaucracy and allows it to influence the direction and priorities of government agencies.
Presidential Appointments: The president has the power to appoint and remove agency heads and other top officials in the bureaucracy. These appointments are subject to Senate confirmation, which gives Congress a role in the process. By appointing officials who share the administration's goals and priorities, the president can ensure that the bureaucracy is aligned with the administration's agenda.
Executive Orders: The president can issue executive orders that set policy for the bureaucracy. These orders can direct agencies to carry out specific goals and initiatives, and they can also establish new programs or modify existing ones. By using executive orders, the president can exert significant control over the bureaucracy and ensure that it is carrying out the administration's agenda.
Overall, congressional oversight and presidential control are important mechanisms for holding the bureaucracy accountable and ensuring that it is carrying out the goals of the administration. By working together, Congress and the president can influence the direction and priorities of government agencies and ensure that they are serving the interests of the American people
Explanation:
In weighing the benefits cities derive from gentrification against the social and human costs, where do you think the balance lies?
Answers
On the one hand, advocates of gentrification argue that it can bring economic growth, investment, and revitalization to previously neglected areas, leading to improved public services, infrastructure, and amenities. Gentrification can also lead to greater diversity, as more affluent residents move into previously homogeneous neighborhoods, and can create a sense of community pride and engagement.
On the other hand, critics argue that gentrification can also have significant social and human costs, including displacement of long-time residents, loss of affordable housing, and exacerbation of inequality and social division. Gentrification can also lead to cultural erasure, as traditional neighborhoods and cultures are replaced by more homogenous and commercialized environments. Additionally, the process of gentrification can sometimes be accompanied by exploitation, harassment, and discrimination against existing residents.
Overall, the answer to where the balance lies depends on various factors, such as the specific context of the neighborhood, the extent of displacement and loss of affordable housing, and the strategies employed to mitigate the negative impacts of gentrification. Ultimately, the goal should be to find a balance that supports economic growth and development while also prioritizing social equity, diversity, and inclusion.
Could anyone help me? Any help is highly appreciated ( with solution or no solution ) just so i can study and learn how to manipulate the problem.
Answers
Answer:
You just replace the values you have in the function provided to you and then calculate the missing one:
P is for Price (Presyo)
A -> Qs = -300 + 20P = -300 + 20 * 15 = 0
B -> 60 = -300 + 20P -> 60+300 = 20 P -> 360/20 = P -> P = 18
C -> Qs = -300 + 20 * 20 = -300 + 400 = 100
D -> 140 = -300 + 20P -> 140 + 300 = 20P -> 440/20 = P -> P = 22
E -> 200 = -300 + 20P = 200+300 = 20P -> 500/20 = P -> P = 25
F -> Qs = -300 + 20 * 28 = -300 + 560 = 260
Explanation:
Many Web sites use hyperlinks to direct visitors to other sources for___ and ____ materials. sketchy
related
unrelated
deeper
Answers
Many Web sites use hyperlinks to direct visitors to other sources for research, and unrelated materials.
What is hyperlinks?Hyperlinks are a type of link found on websites and online documents that allow users to navigate between different webpages and documents. They are created by using HTML code to link one piece of digital content to another. Hyperlinks are typically underlined and highlighted in blue, making them easy to spot and click on. Hyperlinks are essential for navigating the web and can be used to move between pages, download files and open documents. They can also be used to link to external websites, allowing users to explore new content. Hyperlinks are often used to provide more information about a topic and can be used to add helpful context to the page.
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Humanistic and psychoanalytic theories of personality differ in that humanistic theories
propose that personality changes after childhood
center on psychological dysfunction