1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ket [755]
3 years ago
14

The [α] of pure quinine, an antimalarial drug, is −165. If a solution contains 69% quinine and 31% of its enantiomer (ee = 38%),

what is [α] for the solution?
Medicine
1 answer:
Elis [28]3 years ago
7 0

Answer: The required [a] for slotion will be -62.7

Explanation:

The specific rotation of pure quinine= -165

% of pure quinine= 69%

% of its enantiomer=ee=31%

Enantiomer excess =(ee)=excess of a single enantiomer/entire mixture×100

Now,

Excess of a single enantiomer=69% - 31%=38%

Entire mixture=69% + 31%= 100%

(ee)=38/100 × 100

=38%

Net rotation= 0.69-0.31=0.38

Hence, [a] for solution will be = -0.38×165= -62.7

You might be interested in
Mrs. hernandez has recently moved to a long-term care facility due to declining health. since her admission 7 weeks ago, the nur
Feliz [49]

Answer:

lack of social experience

Explanation:

When you get old you either forgot or re-tell your life , old people prefer when young people listen cause it makes them feel young again.

5 0
1 year ago
During a biceps curl, the triceps play what role in contraction?
timama [110]

Answer:

A. Antagonist

Explanation:

The triceps, acting in opposition, is called the antagonist. Because the two muscles are located on opposite sides of the arm, the triceps must relax enough to allow the biceps to tense and contract during a curl. As it contracts, it shortens. As the triceps relaxes, it lengthens. (google)

5 0
3 years ago
"WHEN LIFE GIVES YOU LEMONS YOU MAKE LEMONADE!"<br><br> but what if life gives you a patao;-;
exis [7]

Make bags of air with some potato slices at the bottom.

5 0
3 years ago
Read 2 more answers
According to the Centers for Disease Control and Prevention (2018), a person with a body mass index (BMI) at the 90th percentile
LUCKY_DIMON [66]

Answer:

at risk of being overweight.

Explanation:

A good body composition refers to the state of having a well-balanced proportion of body fat and non-fat constituents (mass); where the body fat is in a lesser percentage while the non-fat mass such as organs, bones, muscle etc are in a higher percentage. Additionally, an individual can develop a good body composition by exercising properly, eating a well-balanced diet and regularly checking their body mass index (BMI).

According to the Centers for Disease Control and Prevention (2018), a person with a body mass index (BMI) at the 90th percentile is at risk of being overweight. The body mass index (BMI) of a person can be measured by taking a measurement of his or her height and weight.

In conclusion, fitness experts usually advises everyone to maintain a healthy lifestyle, eat well and judiciously engage in cardiofitness activities or exercises so as to improve well-being, body mass index (BMI), wellness or heart health.

7 0
2 years ago
Who is most likely to give in to peer pressure and start substance abuse
posledela

Answer:

Explanation:

To say that someone is a peer implies that they are of equal standing. It can mean people who are of the same age, economic class, or grade within a profession. A peer group refers to a group of people of roughly the same age and status who spend time together. Peer pressure is the influence these people have on the life of the individual. It involves adapting behaviors that the individual would otherwise not adapt. If members of the group value a particular behavior there will be a kind of pressure to conform to this. So if friends drink alcohol, or use drugs, it can be hard to say no. Peer pressure can be a force for good or bad.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone help me interpret the prescription?
    12·1 answer
  • When administering a skin-fold assessment, which side of the body should all measurements be taken on for body fat
    11·1 answer
  • Which of the following is a potential reason why antibacterial drug resistance may occur
    14·1 answer
  • Read this excerpt from Chapter 1 of / Know Why the Caged Bird Sings by Maya Angelou and answer the question.
    5·2 answers
  • An elderly patient has been diagnosed with rheumatoid arthritis. When she is admitted to the hospital, she tells nurse she takes
    6·1 answer
  • With acute respiratory distress syndrome (ARDS), a client progressively increases his work of breathing. The physiological princ
    14·1 answer
  • A technician who is adding dye to a tissue specimen is most likely trying to determine whether the bacteria are what?
    8·1 answer
  • The nutrient that enhances iron absorption is ____. a. sodium b. vitamin c c. copper d. potassium
    13·1 answer
  • goals of immunization include eradication and control of disease, such as increase in morbidity and mortality, as well as region
    5·1 answer
  • The nurse assesses a bp reading of 80/50 mm hg from a patient in shock. what stage of shock does the nurse recognize the patient
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!