How many pi bonds are present in caffeine?

Answers

Answer 1
the caffeine molecule has 4 pi bonds, one for every double bond present
Answer 2

Caffeine has nine sigma (σ) bonds and two pi (π) bonds. A pi bond forms from the side-by-side overlap of two p orbitals.

In the compound caffeine, there are six σ C-H bonds and one σ C-C bond, making a total of seven from the single bonds. Additionally, there are two double bonds that each have a π bond in addition to the σ bond.

This provides us with a total of nine σ and two π bonds overall. The term π bond refers to a type of covalent bond that comes from the side-by-side overlap of two p orbitals.

In such a π bond, the overlap regions are located on opposite sides of the internuclear axis.

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Related Questions

The heart muscle uses a lot of energy as it pumps blood through the body. a cell from the heart could be expected to have an unusally high propportion of

Answers

The heart can be a hollow lean muscle which knocks out blood over the arteries and simply by repetitive contractions. It truly is obtained in just about all wildlife with a cardiovascular system (including just about all vertebrates).  

Answer: Mitochondria

When on a weight-gain diet, untrained men tend to initially gain about _______ pounds of muscle per month. A. 5 B. 4 C. 3 D. 2 Reset Selection

Answers

C. 3 is the answer. Hope you passed!

The answer is C. 3 pounds of muscle per month

What are the three principles upon which all effective fitness programs are based

Answers

Final answer:

The three principles that effective fitness programs are based on are individual differences, overload, and progression.

Explanation:

The three principles upon which all effective fitness programs are based on are individual differences, overload, and progression. Individual differences refer to the fact that each person's body response differently to exercise, so a workout routine should be tailored to the individual's fitness level, goals, and health conditions.

Overload is the principle that indicates you must keep increasing the intensity, duration, frequency or weight to keep improving your fitness levels. Lastly, progression refers to the concept that increase in intensity or duration should be gradual to prevent injury. Together they form the basis of a well-rounded and effective fitness program.

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Final answer:

FIT, specificity, and overload are the three principles which all effective fitness programs are based upon.The first, FIT, refers to Frequency, Intensity, and Time, the second, specificity, refers to a tailored training program, and the third, overload, refers to the gradual increase of exercise.

Explanation:

The three principles upon which all effective fitness programs are based include: FIT, the principle of specificity, and the principle of overload. FIT, an acronym for Frequency, Intensity, and Time, refers to how often you exercise, how hard you work during exercise, and how long you exercise. The principle of specificity involves designing a training program that is relevant and appropriate to the individual's specific performance needs. The principle of overload promotes gradually increasing the amount of exercise in order to improve physical fitness.

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Use of laxative pills or weight loss can affect your body negatively in all ways EXCEPT:
A-it is a safe way to lose fat weight
B-can cause dehydration of the body
C-can cause loss of important nutrients
D-can cause loss of muscle tone in the GI tract

Answers

Final answer:

The answer to the question is option A: The use of laxative pills for weight loss is not a safe way to lose fat weight. The use of laxatives can cause dehydration, loss of important nutrients, and loss of muscle tone in the GI tract.

Explanation:

The use of laxative pills for weight loss can affect your body negatively in many ways, but it is not a safe way to lose fat weight. The use of laxatives can lead to dehydration as they may cause the body to lose excessive amounts of water. This can also result in the loss of important nutrients, as laxatives can speed up the transit of food through your digestive system before adequate nutrient absorption takes place. Prolonged use of laxatives might also weaken the GI tract's muscle tone as the body becomes dependent on these substances for bowel movements instead of its natural ability to contract.

Best answer is the brainlyest!!!!!!!!!!!!

Strategies that help relieve tension work by altering _____.

A.the physical state of your body

B.the dynamics within your family

C.your study habits

D.your appearance

Answers

A. the physical state of your body

shrugging your shoulders is an example of a verbal cue. True or false?

Answers

shrugging your shoulders is an example of a verbal cue is false
Shrugging your shoulders is an example of a verbal cue is false. :)

how balance , posture and weight transfer can contribute to success

Answers

the better they are the better confidence you have witch leads to success 
Balance and posture have to do with confidence and keeping your head held high. Weight has to do with a healthy body and having a confident mind

The basis of collaborative problem solving is to focus on _____________ problems and solutions.

Answers

The basis of collaborative problem solving is to focus on unsolved problems and solutions. CPS exists so that delays and challenges relating to skills can be identified and worked with, free of preconceived ideas.

What is the purpose of the exposure determination part of a facility's exposure control plan?

Answers

To list all employees or job roles that may be at risk of exposure to blood or bodily fluid 

The skeletal system serves all of the following functions EXCEPT: A. Bone marrow produces red and white blood cells which help carry oxygen through the blood and fight diseases. B. The skeleton gives the human body its support, shape, and form. C. The skeletal system helps to protect vital organs. D. The skeletal system aids in the production of hormones that signal muscle and hair growth. Please select the best answer from the choices provided. A B C D

Answers

D. The skeletal system aids in the production of hormones that signal muscle and hair growth

hope this helps!!

Answer:

D.

The skeletal system aids in the production of hormones that signal muscle and hair growth.

 

Explanation:

How does general anesthesia affect the brain?

Answers

 The general anaesthetic used to induce or maintain unconsciousness in patients undergoing surgery. Low doses of sevoflurane are enough to affectmemory-related region of the brain, including the primary visual cortex and its association cortex

After four​ hours, a server checked the holding temperature of the cold tuna salad in the buffet. it was 71degrees°f ​(22degrees°​c). what should be done with the tuna​ salad?
a. put it in a cooler to lower the temperature to 41degrees°f ​(5degrees°​c).
b. heat it to 135degrees°f ​(57degrees°​c), then cool it to 41degrees°f ​(5degrees°​c).
c. throw it out.
d. serve it.

Answers

I would say A but I'm not too sure 

What are the keys to developing confidence?

Answers

Avoid Generalization Divide and Conquer Your Low Self-Esteem. ...Notice Your Negative Thought Patterns  from a Distance. Talk Back to Your Negative Thoughts with Assertive Responses.
Please give brainliest .

Although many people believe that the only academic path after high school is a college degree if you want to get a good job, there are actually lots of paths that you could take, such as , apprenticeships, or on-the-job training.

Answers

I believe the correct answer is apprenticeships.

Answer: Technical Program & Salary

Explanation: There is no need to put high school diploma because the question asks what path you can take AFTER high school. Doctorate degree is given to you by an University, which contradicts the question that asks what you can do besides getting a college degree. Hope this helped you.  

In order to make healthy choices, you must learn to _______ risks.
A. ignore
B. advocate for
C. evaluate
D. take more

Answers

In order to mae healthier choices you must learn to TAKE MORE risks.


Hope this helps gold luck!:D

e. With a doctor’s permission, how many servings of the product could a person eat before reaching 100 percent of their allowable daily intake for cholesterol? How did you arrive at your answer?

Answers

The USDA recommends limiting cholesterol intake of no more than 300 mg a day. Those with heart ailments, the limit should be less than 200 mg a day. Is a doctor allows 100 percent allowable intake of cholesterol, therefore, is 300 mg for an average person and 200 mg for a man with an ailment. Take note, egg whites have no cholesterol but egg yolk contains 186 mg of cholesterol already, only one whole egg is allowed if your limit is 200 mg — 1 ¼ eggs if your limit is 300. Example servings of foods with 300 mg cholesterol to understand a daily 100% cholesterol intake looks like are:  4 pieces fried chicken, 14 small scoops of ice cream, 1 lobster tail, 12 large raw oysters, 11 1/10 hotdogs, 10 medium blueberry muffin, 50 pieces shrimp. Two-thirds of those servings is equivalent to 200 mg and can be taken by a person with a heart ailment.  

An individual infected with a fungus will rely on antibiotics to overcome the problem. True or False

Answers

I believe the answer is true

Answer:

False

Explanation:

Antibiotics don't have any effect on fighting fungal infections or fungus

All of the following are functions of smooth muscles EXCEPT: A. heartbeat B. breathing C. perspiration D. digestion Please select the best answer from the choices provided. A B C D

Answers

It could be stated that smooth muscles are the  voluntary muscles. They evolve the control of the following functions: breathing, digestion, perspiration, and urination. So  option A heartbeat does not belong to this group. In fact it belongs to the cardiac muscles which are involuntary. 

Smooth muscles are defined as involuntary and non-striated muscles. Walls of the stomach, blood vessels, and ureters are made up of smooth muscles.

The correct option is:

Option A. heartbeat

Functions of the smooth muscles are:

1. Smooth muscles line the walls of the stomach and digestive tract. It helps in the movement of food during the process of digestion.

2. The folds and projections in the intestine are made by smooth muscles. It helps in the better absorbent of the nutrients.

3. Smooth muscles also line the airway, which functions to protect the airways from distortion during the process of breathing.

4. The cardiac muscles are the type of muscles that are involuntary and control the functioning of the heart and heartbeat.

Thus, the correct option is Option A.

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Alcohol's effect on the circulatory system can lead to ___________

Answers

There can be some positive effects that alcohol can have on the circulatory system. For example, drinking alcohol moderately can help keep the balance of fat in the blood. This can help lower the chance of developing blocked ateries or blood cells. Though with positive effects coming negative. It is clear that drinking more than two drinks per day may caise harm. Large amounts of alcohol can affect how the heart works and if the heart isn't pumping blood throughout the body effectively, other organs may suffer from the lack of oxygen and nutrients.

Which needs are being met when a family promotes intellectual development by reading? A. physical needs B. mental needs C. social needs D. emotional needs

Answers

The answer is B. Mental needs 

Answer:

B. mental needs

Explanation:

When a family promotes intellectual development through reading, that family is meeting the mental needs of its members.

The reading habit offers many benefits to the mind. Among them, it improves the functioning of the brain, contributes to the construction of critical sense and, as the popular saying goes, allows a trip to the world without leaving the reader. It also helps in the personal, intellectual and professional development of family members.

This is one of the many skills that will be extremely important for the growth of young people and for the maintenance of all relationships formed throughout their lives.

To gain the benefits of exercise, you must exercise every day. True False

Answers

False, while you CAN work out everyday it's much healthier to do it a few times a week.

Yes to gain benefits of exercise you have to exercise everyday. True.

Why isn't a higher concentration of disinfectant used to clean contact lenses?

Answers

Disinfection means inactivating all pathogenic microbes but not necessarily all microorganisms. It can be done thru cleaning and rinsing.  In the case of contact lens, they can be disinfected using only a 3% hydrogen peroxide solution – and not higher concentration for safety. With the several commercial disinfecting solutions for contact lenses evaluated in May 1983 – only 3% hydrogen peroxide has a fast disinfection rate of 3-4 hours and has met the safety factor requirement as suggested by FDA.

To maintain a healthy _____, people must follow recommended levels of calories, fat, and portion sizes.

Diet
mental health
relationship
job life

Answers

The answer is diet. ,,,,
Your answer is diet. Hope this helped.

Maintaining other friendships is important in a healthy dating relationship.
A. True
B. False

Answers

The correct answer is A. True

Explanation:

Healthy dating and romantic relationships involve sharing time with another person, being committed and working to be together. However, a healthy relationship also means to spend time with other people and have your own time rather than only spending time with a couple or potential couple as this contributes to your mental health. Due to this, it is positive and recommended to spend time with friends, relatives and even spend time by yourself even if you have a couple. Thus, it is true maintaining other friendships is important in a healthy dating relationship.

The two types of complex carbs are sugars and starches.

True
False

Answers

I’m pretty sure it’s false
The two types of complex carbs are sugars and starches it is true.-

Pregnancy responsibilities include all the following EXCEPT:
A. exercising excessively
B. eating healthy
C. eliminating alcohol
D. eliminating drugs

HURRY I NEED HELP I AM ON A QUIZ

Answers

The answer is A exercising excessively
The answer would be A) or the first option because during pregnancy a mother is caring for her soon to be baby so its important that she eats healthy for herself and her baby, because in life today everyone should eat healthy, she should eliminate alcohol and drugs because it will have bad side effects on the child's birth, but exercising excessively is not necessary but it would be good to get some exercise, not too much to stress the mother but just enough/

People with diabetes are instructed to avoid foods that are rich in carbohydrates. how could your lab today help you decide whether a food should be served to a person with diabetes

Answers

reading the label of the food
Final answer:

People with diabetes need to manage their carbohydrate intake to avoid spiking their blood glucose levels. Refined carbs are especially harmful as they break down quickly into glucose. A lab test can reveal how different foods affect glucose levels, helping diabetics make better dietary choices.

Explanation:

Understanding Carbohydrates in Relation to Diabetes

Individuals with diabetes mellitus need to regulate their blood glucose levels carefully to prevent hyperglycemia. Foods rich in carbohydrates can cause glucose levels to rise quickly, hence they are often restricted in a diabetic diet. To provide energy without excessive carbs, diabetics may rely on proteins and fats.

Dietary adjustments are crucial, with an emphasis on limiting the intake of refined carbohydrates, which are rapidly converted to glucose, leading to spikes in blood sugar that are problematic for diabetics. Instead, it's suggested that complex carbohydrates from whole grains and vegetables are better as they break down more slowly, preventing sudden blood sugar increases.

The importance of understanding the chemistry behind how foods affect blood glucose levels is paramount in managing diabetes. Foods high in simple sugars, for example, are quickly broken down into glucose, exacerbating hyperglycemia. Conversely, complex carbohydrates, resulting in slower glucose release, are considered a healthier choice. Diabetic individuals are often advised to avoid high-carbohydrate foods and substitute with non-carbohydrate sweeteners to satisfy their cravings without increasing blood glucose levels.

By measuring blood glucose responses to different diets, one can better assess which foods should be included or avoided for a person with diabetes. A lab test could provide insights into how various foods impact an individual's glucose levels, allowing for more informed dietary choices to control their condition.

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2. Which is an internal influence on physical activity?

A) Family

B) Lifestyle

C) Media

3. Which is an external influence on physical activity?

A) Experiences

B) Likes

C) Feelings about yourself

D) Role models

Answers

first one i would say a, second one i would say a also

Pathogens are microorganisms that cure disease.
a. True
b. False

Answers

False.
Because pathogens are microorganisms that cause diseases like bacteria, parasites or fungi.

hope it helps
pathogens are microorganisms that cause diseases, not cure diseases, so, the answer is false. 

Can you be depressed but not have depression?

Answers

Yes, if school is stressing you out, and other stuff
yes u can be depressed without depression. I say yes cause u don't have to be sad to be depressed or anything. It could be the people your with everyday. If they stress u out much maybe don't be there. If it's school then atleast get ur work done n focus on no one else but your work. If it's a sibling u shouldn't ignore Cuz u would get more frustrated u should maybe tell them how u feel.
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