ligroin enhances recrystallization by forming polar bonds.
Advantages ethanol has over n-octanol as a recrystallization solvent:octanol is more lipophilic (like more lipids) lipids are waxy solids, not crystalline solids. Ethanol is better at dissolving polar crystalline solids than octanol.
An impure chemical can be cleaned up in a solvent by recrystallization, sometimes referred to as fractional crystallization. The purification process is predicated on the idea that most solids become more soluble at higher temperatures.
Re-crystallization is a method for removing impurities from solid substances.
1 Hot liquid tends to make solids more soluble than cold liquids. Recrystallization involves dissolving an impure solid chemical in a hot liquid until the solution reaches saturation, at which point the liquid is allowed to cool.
2 The result should be relatively pure crystals of the chemical. Ideally, any contaminants will be kept in the solution and won't be incorporated into the crystals as they grow. The crystals can then be filtered out of the solution. Some of the chemicals will remain in the solution and be lost; not all of them can be recovered.
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A new research study shows that ice cream lowers the risk of cancer. what happens to demand?
A new research study shows that ice cream lowers the risk of cancer. but it didn't affect the demand instead it increased.
The market for ice cream products is expected to rise as a result of rising disposable income, producers introducing new flavors, and rising ice cream consumption as a snack alternative.
The typical American consumes 4 gallons, or nearly 20 pounds, of ice cream annually. According to Fortune Business Insights, due to a global ice cream craze, the global ice cream industry will increase by 37% in less than a decade, from $71.52 billion in 2021 to $97.85 billion in 2027.
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We sometimes fail to listen carefully because we are just waiting politely for the next pause so that we can have our turn to speak. this listening barrier is called:__________
We sometimes fail to listen carefully because we are just waiting politely for the next pause so that we can have our turn to speak. This listening barrier is called: Psychological barriers.
Listening is a critical component of communication. However, it appears that the majority of us do not listen well.
Active listening is the process of being ready to listen, paying attention to the verbal and nonverbal cues being used, and then responding appropriately to demonstrate that you are paying attention to what is being said. This kind of listening shows that the listener and speaker are on the same page.
Everyone adds their own set of cultural, ethical, and personal values to the communication process. These are psychological barriers. Each of us has a perception of what is essential and what is proper. If other views conflict with our previous notions, we have a tendency to "tune out" speakers and miss their messages.
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It is possible to calculate a numerical value of ea if you have only found one term in the series expansion.
a. true
b. false
It is not possible to calculate a numerical value of ea if you have only found one term in the series expansion, due to which the statement given in the question is false
In mathematics, a function is expanded into a series, also referred to as an infinite sum. It's a method for computing functions that can't be represented by only utilising fundamental operators (addition, subtraction, multiplication and division).
The Taylor series can be used to calculate the value of the entire function at each point if the value of the function and all of its derivatives are known at one point.
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What method is commonly used to assess how well software testing covered the potential uses of an application?
What method is commonly used to assess how well software testing covered the potential uses of an application?A test coverage analysis.
What is a test coverage?
The word 'test coverage' refers to a technique that assesses how much code is exercised during the execution of our test cases and whether they actually cover the application code.In order to get better test coverage, more test cases are created.Defects are reduced as a result, and subsequent stages need less work. A polished product also gives you the chance to boost client satisfaction. Test case elimination that doesn't make sense for the current project can be facilitated by detecting and analysing test case coverage.Finding sections of a programme that a collection of test cases has not covered is made easier by using test coverage.A programme becomes stronger and less prone to errors as a result.To learn more about test coverage, refer:
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The gold standard and best way to train supervisees to implement assessment and intervention procedures is known as:_________
The gold standard and best way to train the supervisees to implement assessment and intervention procedures are known as Behavioral Skills Training.
The way a person interacts with people and reacts to different situations is influenced by their behavioural skills. Behavioural Skills abilities can assist in figuring out a person's behaviours, thoughts, and emotions. Many Behavioral Skills are social abilities that aid in relationship formation and interpersonal connections. The main Behavioral Skills one needs to develop are work-life balance, emotional intelligence, self-improvement, patience, communication skills, and time management. Behavioural skills training is a combination of abilities needed for interpersonal connections, efficient communication, engaging attitudes, and constructive emotions that will enable workers to work and perform effectively with their coworkers.
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In order for phospholipids to form bilayers spontaneously in an aqueous environment, the ph should be:________
In order for phospholipids to form bilayers spontaneously in an aqueous environment, the ph should be approximately neutral.
To spontaneously create bilayers of phospholipids in an aquatic environment, the ph must be close to neutral.
Phospholipid bilayers have a significant role in cell membrane structure. The lipid bilayer acts as a barrier to keep chemicals and ions within and outside of the cell. However, one of the most important roles of the cell membrane is the capacity to selectively permit the passage of particular molecules into and out of cells.
The lipid bilayer is a two-layer polar membrane made of lipid molecules. These membranes are flat sheets that enclose every cell. The building blocks of cell membranes are phospholipids, which spontaneously assemble into organized lipid bilayers in pH 7 water solution.
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According to the social pragmatics theory of language learning, what do children use to understand the topic of conversation or the name of an item?
Children utilize to comprehend the CONTEXT of speech or the topic of a discussion, according to the social pragmatics theory of language learning.
According to the social pragmatic theory of language learning, infants do not require any "innate restrictions" to acquire new information or words; rather, they rely on a variety of contextual signals, such as eye contact, gestures, body language, etc., to aid in their word learning.
Other choices
The nativist idea is supported by language acuisition device, which contends that without this natural capacity, children are unable to understand language.
The social pragmatic theory is not closely related to the conventional technique of reinforcement.
Modeling is a part of social learning that uses imitation as a strategy to help kids acquire new "behaviours."
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what do William Penn and George Calvert have in common
Answer: Both formed representative governments. Both opposed the usage of slave labor. Both supported a version of religious freedom.
Explanation: Hope it helps!
A ramp was constructed to make access to springfield's public library easier if angle b is 165 what is the measure of angle a:_________
A ramp was constructed to make access to Springfield's public library easier if angle b is 165 what is the measure of angle a is 15°
The Springfield Armory, more officially referred to as the united states Armory and Arsenal at Springfield located inside the town of Springfield. The attitude of elevation is a perspective this is fashioned among the horizontal line and the line of sight. If the line of sight is upward from the horizontal line, then the angle fashioned is an angle of elevation.
The back bearing may be calculated by way of adding or subtracting 180° from the forward bearing. you are traveling on another route, your bearing is measured clockwise from North. study the diagram under in case you stroll from O in the route proven by using the crimson arrow, you are on foot on a bearing of 110 °.
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In the declaration of independence, what does jefferson mean when he says that the king has "refused his assent to laws … necessary for the public good"?.
In the declaration of independence, jefferson means the king has not allowed changes that would benefit the colonists when he says that the king has "refused his assent to laws … necessary for the public good.
The Declaration of Independence outlines the values that guide our nation and define who we are as Americans. The Declaration of Independence, unlike the other founding papers, is not legally enforceable, yet it is nonetheless influential.
In preparation for Independence Day, 24/7 Wall St. is examining the identities of the Declaration's 56 signatories. We compiled our list of references using websites like USHistory.org and Independence Hall Association, a non-profit organisation established in Philadelphia.
It is difficult to exaggerate the significance of the Declaration of Independence. It created a new country based on the First Principles of the rule of law, unalienable rights, limited government, the Social Compact, equality, and the right to change or abolish tyrannical government for the first time in the annals of human history.
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The complete question is ''In the Declaration of Independence, what does Jefferson mean when he says that the king has "refused his assent to laws necessary for
the public good"?
A The king knows what is best for the colonists
В.
The king is too busy to listen to the colonists
C. The king enjoys his absolute rule over the colonists,
D. The king has not allowed changes that would benefit the colonists.
Which are reasons for the importance of viewing works of art in their original state?
The reasons for the importance of viewing works of art in their original state are to perceive their true dimensions, to view any physical details that are lost in reproductions and to gain the full experience of looking.
Art is dynamic and new trends and styles emerge quickly. But the artist's last attempt is to speak personally to the viewer, allowing them to be interpreted in many different ways. Art appreciation is very important for several reasons.
A good way to understand art is to see the story behind the work and to see it in the original form. Appreciating art opens people's minds by listening to different perspectives, points of view and interpretations of art, encourages thoughtful conversations, and helps them understand that there are multiple approaches to everything.
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How can choosing the wrong friends lead one to engage in risky behavior?
Answer: Peer pressure, for example, can play a significant role in risk-taking behaviors. If someone sees their friends or peers engaging in risky behaviors and wants to be accepted by them, they might be more likely to engage in those behaviors.
Explanation:
For what refrigerant is an equipment room refrigerant detector not required under ashrae standard 15 provided the mechanical ventilation system in the equipment room is run continuously?
For an equipment room having R717 in the systems, a refrigerant detector is not needed.
what is refrigerant?A refrigerant is a working fluid that is utilised in the refrigeration cycle of air conditioners and heat pumps. In this cycle, they typically go through numerous phase changes from a liquid to a gas and back again.Due to their toxicity, flammability, and involvement in the ozone depletion and climate change caused by CFC and HCFC and HFC refrigerants, respectively, refrigerants are subject to strict regulation.A refrigerant is a chemical that moves heat from one place to another during a heat cycle. at room temperature, usually a gas.Found mostly in air conditioners, refrigerators, freezers, and car air conditioners, as well as occasionally in items that heat up and pretty much anything that cools.To know more about refrigerant , refer to the following link:
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Total u.s. national park system land occupies 84.4 million acres. part a how many square miles is this? (note that 1 acre = 43,560 ft2 and 1 mile = 5280 ft.)
The total U.S. land area is 3.537 million square miles.
How many acres does the US National Park System cover?
85 million acres
The National Park Service manages 423 individual units covering more than 85 million acres in all 50 states, the District of Columbia, and US territories.
The "Organic Act," which established the National Park Service as a federal agency within the Department of the Interior, was signed by President Woodrow Wilson on August 25, 1916.
The National Park Service was tasked with caring for the national parks and monuments that were then under the department's management.
Since then, the National Park System has grown to 423 units, or parks, more than 150 related areas, and a number of programs that help preserve the country's natural and cultural heritage for the benefit of present and future generations.
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The problem-solving model consists of problem identification, solution design, solution evaluation and choice, and ___________.
The problem-solving model consists of problem identification, solution design, solution evaluation and choice, and implementation
What is a model for issue solving?A practical set of abilities are incorporated into a methodical procedure by the problem-solving model.The concept integrates the application of statistical tools, such as control charts and process flow diagrams, with group problem-solving techniques, such as idea generation and consensus decision-making. What are the steps of problem -solving ?There are five steps in the problem-solving model:
1. Describe the issue and your ultimate objective.
2. Create a plan: Talk about concepts and come up with potential answers to the issue?
3. Take action: Choose the best option available and attempt to fix the issue.
4. Examine: Did the remedy resolve the issue? Otherwise, why not? Review and revise your plan.
5. Adapt: Change existing plans or develop new ones. Attempt once more, then evaluate and adjust (if needed).
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Any individual, group, organization or institution that contributes in some way to your socialization at some point in your life is a/an ____ for you.
Any individual, group, organization or institution that contributes in some way to your socialization is it at some point in your life is a/and " Agent of socialization " for you.
What is the socialization agent?Socialization agents are a mix of social groups and social institutions that provide the first socialization experiences. Families, early childhood education, peer groups, the workplace, religion, the government, and the media all communicate and reinforce norms.Family, religion, peer groups, economic systems, legal systems, penal systems, language, and the media are examples of socialization agents, or institutions that can imprint social norms on an individual.Family is commonly regarded as the most important socializing agent. As a result, when you are born, you are completely dependent on others to survive. As a result, your parents play an important role. They show you how to take care of yourself.The family is the first socializing agent. Mothers and fathers, siblings and grandparents, as well as extended family members, all teach their children what they need to know.To learn more about socialization refer to
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A member-function call can supply ________ that help the function perform its task.
A member-function call can supply arguments that help the function perform its task. This is a feature of the C++ language.
High-performance apps can be made using C++, a cross-platform programming language. As a C language extension, C++ was created by Bjarne Stroustrup. The system resources and memory are highly customizable for programmers thanks to C++.
Programming language which is C++, is effective for all programming needs. It can be utilized to create operating systems, browsers, games, and other software. Programming styles such as procedural, object-oriented, functional, and others are supported by C++. C++ is hence both strong and adaptable.
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The mayor together with his two brothers ____________ going to be indicted for accepting bribes.
The mayor together with his two brothers is going to be indicted for accepting bribes.
Bribery is the act of offering, giving, receiving, or soliciting any valuable thing from a person in charge of public or legal responsibility in order to influence their behaviour. Bribes are defined as the offering, giving, soliciting, or receiving of any valuable object with the intention of influencing the behaviour of a person who is charged with a public or legal obligation. Corruption is dishonest or fraudulent behaviour by persons in positions of authority, sometimes including bribes. In order to improperly influence a decision or process, one party may provide money or something else of worth as a bribe. Bribes are frequently paid in order to avoid paying public fines or to get around laws or restrictions.
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What might cause a client to ask to renegotiate a long-term outsourcing contract?
Business priorities and focus shifting might cause a client to ask to renegotiate a long-term outsourcing contract.
A strategic decision would be something like focusing on a new market or realising that an outsourced IT function can now be helpful. Another justification for the shift could be a client's merger with another business, which could have been the cause of Kmart's 2005 termination of its outsourcing contract with CSC. Sears and Kmart together.
What leads to renegotiating?
The two most common causes of renegotiation are a faulty contract or altered circumstances. Any written agreement must convey the parties' complete comprehension of the terms of the trade.Renegotiation risk exists in every deal, but it can be reduced during the initial contract negotiation and the associated costs can be kept to a minimum when renegotiations do occur.To learn more about renegotiating visit:https://brainly.com/question/2000538
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I must scan my trippak and receipts before midnight on ___________ the week before to be paid on time.
I must scan my trip peak and receipts before midnight on Wednesday the week before to be paid on time.
That means you may have to wait one by two week to get your first paycheck instead of just two weeks. The reason for this is simply that the payroll system has transferred the money and missed the date assigned. It's easy.
Salaries may be issued at the end of each pay period or may be issued a week or more after the start of work. Should be paid at the latest for the first pay period worked on the company's regular pay day. This means that the employee or worker will receive a weekly salary the week after the takeover.
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Of all the leadership approaches described in the textbook, __________ leadership is the one most universally endorsed across cultures.
Transformational leadership is the one most universally endorsed across cultures of all the leadership approaches. And yes, this is how it is typically described in textbooks.
The effectiveness of workers' jobs is known to be moderately improved by this style of leadership. Research and studies have shown that workers who work for transformational leaders usually exhibit higher levels of task performance and normative commitment.
Actually, programs for developing leaders commonly highlighted contents related to transformational leadership, endorsing this style of leadership ubiquitously and universally.
A common goal is developed, articulated, and designed by leaders under transformational leadership, and followers are motivated to realize it.
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When is the micro boiling point determined? describe physically what is happening.
The micro boiling point is determined by only 3–4 L of liquid and can be used to estimate the boiling point of a liquid at the microscale level (1). Using a 10-L syringe, the liquid is injected into a melting-point tube and, if necessary, centrifuged to the bottom.
The boiling point is the temperature at which a liquid's internal pressure equals the external pressure exerted by the liquid's vapor; in this situation, the addition of heat causes the liquid to turn into its vapor without rising the temperature.
The boiling point of organic compounds can reveal crucial details about their structural makeup and physical features. A chemical can be identified and described using its boiling point. Water boils more quickly at higher atmospheric pressure than it does at lower atmospheric pressure.
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What would happen in this experiment if the solvent level in the developing chamber was greater than 1.5 cm high ?
In this experiment, if the solvent level in the developing chamber was
greater than 1 high it would dissolve the solutes before they have the
ability to climb up.
Explanation:
The sample spots will quickly dissolve into the mobile phase if the solvent level in the developing chamber was higher than 1.5 cm and they happened to be below the solvent level. This prevents the mobile phase from having a chance to stabilize itself. As a result of a failed attempt, errors can also result in calculation errors and inaccurate results or no results at all.Using a thin stationary phase supported by an inert backing, thin layer chromatography (TLC) is a chromatographic technique used to separate the components of a mixture. It can be carried out on an analytical scale to track the development of a reaction or on a preparative scale to purify minute quantities of a compound. Because of its simplicity, comparatively low cost, high sensitivity, and rapid separation, TLC is a widely used analytical tool. Similar to all chromatography, TLC works on the premise that a compound will have varying affinities for the mobile and stationary phases, which will influence how quickly it migrates. TLC aims to produce well-defined, well-separated spots.
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In which part of a motivated sequence plan might you provide evidence that your solution is feasible and would solve the problem?
Need part of a motivated sequence plan might you provide evidence that your solution is feasible and would solve the problem. The problem-cause-solution organizational pattern organizes an argument by describing a problem, identifying what you believe is causing the problem, and then recommending a solution to fix the problem.
The second step in Monroe's motivated sequence is which of the following?The second step in Monroe's speech sequence is to identify the public's needs and persuade them that this problem exists among them and that they must find a solution to it. Monroe's motivated sequence, five steps are critical, and this point cannot be overlooked in the list.The problem-cause-solution organizational pattern organizes an argument by describing a problem, identifying what you believe is causing the problem, and then recommending a solution to fix the problem.Problem-Solution Order: A two-point speech in which you first present the existence and gravity of a problem, followed by a workable solution to that problem. This is the best order for persuasive speeches.Credibility can be classified into three types: The speaker's reputation and first impressions provide initial credibility. Great delivery and credible evidence help to build credibility throughout the speech. The lasting impression of credibility at the end of a speech is referred to as terminal credibility.To learn more about motivated sequence refer to
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A 90-day commercial paper issue is quoted at a discount rate of 4.75or a 360-day year. the bond equivalent yield for this instrument is closest to:__________
A 360-day year or a discount rate of 4.75 is used when quoting a 90-day commercial paper issue. This instrument's bond equivalent yield is most closely related to 4.87%.
The bond equivalent yield (BEY), in financial jargon, is a statistic that enables investors to determine the yearly percentage yield for fixed-come assets, even if they are discounted short-term investments that only pay out on a quarterly, monthly, or semi-annual basis.
PV = FV × {1 − (Days/Year) × DR}
The price and face value of the money market instrument, respectively, are PV and FV.
DR = The discount rate is stated as an annual percentage.
Days = The number of days between maturity and settlement
Year = Days in a year
PV = 100 × {1 − (90/360) × 0.0475}
= 98.8125
The bond equivalent yield is
AOR = (Year/Days) × {(FV − PV)/PV}
= 365/90 × {(100 − 98.8125)/98.8125}
= 4.874%
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Which perspective emphasizes the struggle for power as the primary cause of events?
The critical theory perspective emphasizes the struggle for power as the primary cause of events.
Critical theories attempt to find the underlying assumptions in social life that keep people from fully and truly understand how the world works. These underlying assumptions, in the view of critical theories, create a that actively undermines people's progress toward a true democracy.
Critical theory is a social theory that aims to critique and exchange society as an entire. critical theories attempt to discover the underlying assumptions in social lifestyles that maintain human beings from absolutely and absolutely expertise how the world works
It follows from Horkheimer's definition that a critical theory is adequate only if it meets three criteria it must be explanatory practical and normative all at the same time.
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Both distance-vector and link-state algorithms are considered ______ routing-update algorithms, whereas bgp (border gateway protocol) is considered ______ routing.
Both distance-vector and link-state algorithms are considered interior routing-update algorithms, whereas bgp (border gateway protocol) is considered Exterior routing.
Why is it reached a distance vector?The name distance vector is emanated from the fact that routes are announced as vectors of (distance, direction), where distance is defined in terms of a metric and leadership is defined in terms of the next-hop router
Where is distance vector routing used?
Action of distance-vector routing
RIP is an interior gateway protocol, so it can be employed in local area networks (LANs) on interior or border routers. Routers with RIPv1 performance exchange their routing tables with neighboring routers by publishing a RIPv1 packet every 30 second into all connected networks.
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Can emotional design really evoke emotion in multimedia learning? what can you say?
But emotional states were unaffected by the emotional design. In conclusion, the emotional design of a multimedia learning program can influence how well students learn.
What is emotional design?The cognitive abilities of attention, memory, executive function, decision-making, critical thinking, problem-solving, and regulation—all of which are crucial to learning—are inextricably related to and influenced by emotions.
Tests, exams, homework, and deadlines are linked to a range of emotions, including boredom, worry, and aggravation. Even the topic matter has an impact on emotions that interfere with memory and learning.
Therefore, emotional design unaffected by emotions in multimedia learning.
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If the wage rate paid per hour differs from the standard wage rate per hour for direct labor, the variance is a _____ variance.
If the wage rate paid per hour differs from the standard wage rate per hour, the variance is a rate variance.
What is a rate variance?The deviation price paid and the predicted price, times by the amount actually purchased, is known as a rate variance. The idea is used to find situations when a company is paying too much for products, services, or labor.
However, paying too much attention to rate variations might lead to a narrow concentration on cost savings. Instead, spending a little extra on superior quality might make more sense because it tends to lower overall costs. The equation is:
(Actual price - Standard price) x Actual quantity = Rate variance
Therefore, the wage rate paid per hour differs from the standard wage rate per hour, the variance is a rate variance.
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After a stressful day at school and work, kristen attends a yoga class. At the end of the class, kristen lays quietly on her mat while paying close attention to her breathing. Her ________ nervous system is activated.
When Kiristen lays quietly on her mat, paying close attention to her breathing after the yoga class, her parasympathetic nervous system is activated.
Parasympathetic nervous system is one of the two distinct division of the autonomic nervous system. It balances the other division called the sympathetic nervous system. The sympathetic nervous system controls the fight or flight reaction of your body while the parasympathetic nervous system controls the body’s reaction during rest time.
As the body is at rest after a physical activity of performing yoga, the parasympathetic nervous system is activated to help the body in stimulation of rest and digest activity.
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