In chromatography, scientists use chemicals that can separate the parts of the mixture. These chemicals are called _______. (eight letters)

Answers

Answer 1

Answer:

Explanation:

In chromatography, the chemicals that are used to separate the components of a mixture are called "solvents".

The process works because different compounds in the mixture have different affinities for the stationary phase and the mobile phase. The stationary phase is usually a solid or a liquid that is immobile and the mobile phase is a liquid or a gas that is continuously flowing.

The solvent is the liquid that is used as the mobile phase. It is passed through the stationary phase, which can be a solid or a liquid, and the components of the mixture are separated based on their interactions with the stationary and mobile phases.

There are several types of chromatography that use different solvents and stationary phases, such as:

Thin Layer Chromatography (TLC) uses a thin layer of silica or alumina on a glass plate as the stationary phase, and a solvent such as ethyl acetate or hexane as the mobile phase.

Gas Chromatography (GC) uses a solid stationary phase such as a porous beads, and the mobile phase is a gas such as helium, hydrogen or nitrogen.

High Performance Liquid Chromatography (HPLC) uses a liquid stationary phase, which is usually a chemically-bonded silica, and solvents such as acetonitrile, methanol or water as the mobile phase.

Each of these methods can separate different compounds based on their chemical and physical properties, thus making it possible for scientists to identify and quantitate the components of a mixture.


Related Questions

Police Stress: There are four types of police stress listed in the textbook and lecture notes. In your own words, explain one of the four police stressors and provide an example (fiction or non-fiction).


Recommendation: What do you recommend police do to reduce their stress? Focus on the stress you explained in your response to A. Be specific and creative (money and time do not matter).


4 TYPES OF POLICE STRESS ARE : External Stress, Organizational Stress, Personal Stress, and Operational Stress.


!PLEASE I NEED HELP! PLEASE HELP ME! DUE IN 30 MINUTES PLEASE!! PLEASE! I'LL GIVE YOU A CROWN AND MORE POINTS!

Answers

Operational Stress is caused by the day to day operational challenges police face such as dealing with hostile and dangerous situations, long work hours and working under extreme pressure. An example of operational stress is when a police officer responds to a high-stakes call in which a suspect has taken hostages and the police officer needs to safely deal with the situation and rescue the hostages.

Police should take steps to reduce operational stress such as taking proper breaks during their shifts, engaging in physical activity to reduce stress, receiving mental health services, seeking support from a colleague if they are feeling overwhelmed, and having an open dialog with their supervisors. By taking these steps, police can better manage their operational stress, allowing them to maintain a healthy work-life balance and allow them to focus on their duties.

Drag the tiles to the correct boxes to complete the pairs.
The Founders were wary of any one group or person having too much power. Each branch of government was carefully defined with limits to its
powers. Pair the people of Congress to their powers
Speaker of the
House
Senators
Majority Leaders
Representatives
make laws, create taxes, spend money, impeach officials
lead the house, take over the presidency if the Vice President is not able
appoint heads and members of committees, lead sessions of Congress
confirm nominations, create treaties, hold impeachment trials

Answers

According to the question, The legislative, executive, and judicial branches make up the three parts of the federal government of the United States.

The federal government consists of what?

The U.S. Constitution grants Congress, the Presidents, and the Federal judges, respectively, the authority to act as the legislation, executive, and judicial departments of the federal government.

What function does the federal government serve?

Just one federal government has the power to control domestic and international trade, declare war, and establish other national policies like as taxation and spending. Legislation from Congress, which consists of the 100-member U.S. Senate and the individuals with unique House of Representatives, is frequently the first step in these procedures.

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Answer:

In the image

Hope this helps!

Explanation:

Agatha is a federal attorney whose latest task is spearheading a suit against a bank accused of creating multiple fraudulent accounts in clients’ names. What Division does she work most with when she needs to find specialists in “forensic accounting” who can help her interpret the accounting records provided by the bank in question?A Division of Marketing Practices
B.
Division of Consumer Response and Operations
C.
Division of Financial Practices
D.
Division of Litigation Technology and Analysis

Answers

After analyzing the scenario, the Division of Litigation Technology and Analysis can help her interpret the accounting records provided by the bank. Thus, option 'D' is the correct option.

What is the Division of Litigation Technology and Analysis?

The Division of Litigation Technology and Analysis oversees the technology tools used by the Bureau to conduct investigations and litigate consumer protection cases, as well as analyse and integrate emerging technologies.

It collaborates with attorneys to determine the case's demands. The Division consists of: The purpose of the digital forensic unit is to locate, gather, examine, and preserve electronically stored material for use in legal proceedings.

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Clarify the extent to which Kant's ethical theory is deontological.

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Kant's ethical theory is deontological because Kant's ethical theory is based on his view that the human being is having the different capacity of rationality.

What is Ethical Theory?

Theories which attempt to provide a unified and clear account of our ethical obligations are ethical theories. These theories are the attempts to tell a single story about what we are obligated to do, without any reference of specific examples.

Kant's deontological philosophy is derived from his belief that humans possess the ability to understand universal moral laws that can be applied  in all situations. Different from other ethical theories, deontology did not focus on the consequences of personal actions.

Therefore, Kant's ethical theory is considered deontological.

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Higher doses of Barbiturates results in  aggressive behavior erratic driving both neither

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Barbiturates at higher doses impair thinking and weaken coordination. So it is bound to lead to both aggressive behavior and erratic driving.

What are Barbiturates?

A class of medications known as barbiturates has sedative effect on the body. Similar to alcohol, they can have effects that range from a mild relaxation to the inability to perceive pain and even unconsciousness.

The German Bayer laboratory created the first barbiturates in the 1860s. Barbiturates boost the activities of a brain chemical involved in signal transmission. The name of this substance is gamma amino butyric acid (GABA).

What are the effects of Barbiturates?

They serve as a drug to ease anxiety, stop seizures, and promote sleep.

They have recreational drug effects that are comparable to that of alcohol:

exhilaration and relaxationlowered inhibitionunclear speechloss of coordination and poor decision-makingconfusion

Barbiturates might vary in their onset time and their duration of action. They come in four different acting lengths: super short, short, moderate, and long. Barbiturates have an effect on the body within 30 minutes of ingestion and last for 4 to 16 hours.

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What is MOST likely to happen when a bullet is fired 12 to 18 inches from a target?

Answers

Answer:

It is likely that the bullet will hit the target. However, it is also possible that the bullet could miss the target or that the bullet could ricochet off the target.

Explanation:

It is not possible to accurately predict what will happen when a bullet is fired from a gun, as the outcome will depend on a variety of factors such as the type of gun and bullet being used, the distance from the target, and the target itself.

In general, if a bullet is fired from a gun at a distance of 12 to 18 inches from a target, it is likely that the bullet will hit the target. However, it is also possible that the bullet could miss the target or that the bullet could ricochet off the target. It is important to exercise caution when handling firearms and to always follow safety guidelines to minimize the risk of injury or accidents.

Why are tax policies that cut taxes called trickle-down economics?
1. because the benefits are supposed to filter down to workers
2. because the benefits become less pronounced at every level
3. because the benefits are intended to help only the wealthy
4. because the benefits quickly cause a positive effec

Answers

Answer:

Explanation:

Trickle-down economics, also known as supply-side economics, is a theory that argues that cutting taxes on the wealthy and businesses will lead to greater economic growth, which in turn will benefit everyone in the economy, including workers and lower-income individuals. The theory is based on the idea that if the wealthy and businesses have more money, they will invest it in ways that create jobs and stimulate economic growth. The theory is also known as "the trickle-down theory" due to the belief that the benefits of tax cuts will "trickle down" to the rest of society.

So the reason why tax policies that cut taxes called trickle-down economics is 1. because the benefits are supposed to filter down to workers

What is one reason the principle of stare decisis is important?

It defines what areas of law each court controls.

It prevents Congress from writing unethical laws.

It provides stability in the rule of law for all citizens.

It ensures the courts are able to financially support themselves.

Answers

One reason the principle of Stare Decisis is important is C. It provides stability in the rule of law for all citizens.

What is Stare Decisis?

Stare Decisis is a judicial doctrine in which a court looks at previous judicial decisions when the same points come up again.

It literally means "let the decision stand" and directs lawyers to carefully overturn decisions made by previous courts.

The vital point of stare decisis is that it allows judges to decrease the uncertainty concerned with making decisions.

They can check their results against the earlier results reached by judges that have handled such cases and reached a decision as well as allows all citizens to fully experience the rule of law.

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How do you distinguish ethics from morals?

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ethics are the rules you follow or abide by to remain in a community (example is following the rules and teachings of religion to stay in the fold of it) and morals are you personal values and probably sticking to principles

which body in indian political system is an example of direct democracy

Answers

Gram Sabha in Indian political system is an example of direct democracy.

The Gram Sabha is crucial to the development of the village and the Panchayati Raj. People discuss village planning and development as well as local government on the Gram Sabha's discussion board.

The Panchayat implements development programs under the Gram Sabha's broad guidance, supervision, and oversight. Without the Gram Sabha's permission, no Panchayat decision is genuine or valid; all decisions are made through this body.

Those over 18 who live in the village and whose names are on the voter lists for the Panchayat level at the village are eligible to join the Gram Sabha.

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What are national laws called

Answers

The answer is Federal
Acts

What is the difference between bias and perspective, if there is a difference, and how can/should they be handled differently?

Answers

Bias and perspective are two terms that are often used interchangeably but they are slightly different. Bias is an inclination that someone has towards a certain idea or opinion based on preconceived notions or a personal opinion. Perspective is how someone views a specific situation, which is based on a combination of many influences including beliefs, values, and experiences.

Bias should be handled by listening to the argument of others nonjudgmentally, understanding the evidence that is being presented, and striving to make unbiased decisions or conclusions. Perspective is best handled by actively listening and considering the ideas of others without judgement, then working together to reach an opinion that is inclusive of all perspectives.

At which of the following BAC levels are motor coordination skills, judgment, and self-control impaired?

.08
.15
.30
.60

Answers

At the BAC levels of 0.15, individuals have their are motor coordination skills, judgment, and self-control impaired. The Option B is correct.

What are some effects at Specific BAC?

Individual differences among users have a significant impact on the effects of alcohol intoxication. Some users may become intoxicated at much lower levels of Blood Alcohol Concentration (BAC) than shown.

No loss of coordination, slight euphoria, and loss of shyness at 0.02-0.03 BAC. There is no evidence of depressive effects. Mildly relaxed and possibly a little dizzy.BAC 0.04-0.06: A sense of well-being, relaxation, lower inhibitions, and a sensation of warmth. Euphoria. Some minor impairment in reasoning and memory, as well as a reduction in caution. 0.07-0.09 BAC: Impaired balance, speech, vision, reaction time, and hearing. Euphoria. Judgment and self-control are impaired, as are caution, reason, and memory. 08 is legally impairing and illegal.

0.10-0.125 BAC: We have significant impairment of motor coordination and loss of good judgment.

0.13-0.15 BAC: Gross motor impairment and lack of physical control. Blurred vision and major loss of balance.

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