a 50g sample of radioactive iodine-131 has a half-life of 8.0 days. After 32 days, how much is left?

Answers

Answer 1

Answer:

The correct answer is = 3.125 gram.

Explanation:

The half-life of iodine-131 is 8 days as given. The half life of is the required time to which a radioactive comond or element left half of its initial life quantity which means that after 8 days, half of the sample (50 gm of iodine 131) would have decayed and half would be left undecayed.

now it is ask that how much amount of iodine 131 left after 32 days, so

32 days = 4 half lives of iodine 131 (8 days * 4 = 32 days)

Thus, after 1st half life = 50/2 = 25gm

2nd half life = 25/2 = 12.5

3rd half life = 12.5/2 = 6.25

and at last fourth half live = 6.25/2 = 3.125

Thus, the correct answer is = 3.125 gram.


Related Questions

(06.03 LC)
Which of the following strategies can help protect against the transmission of salmonella?
O Avoid sharing brushes, combs, or hats
O Make sure pets receive regular veterinary care
O Practice safe food handling and preparation
O Wash hands regularly for at least 20 seconds
Question 3(Multiple Choice Worth 3 points)

Answers

C & D

Explanation:

An infection commonly caused by contaminated FOOD and WATER.

Answer:

Practice safe food handling and preparation

Explanation:



In sexually reproducing organisms, such as humans, which of the following statements is TRUE about the DNA
found in the cells of the children

Answers

Answer:

Im sorry but there are no statements to choose from

Explanation:

Identify the factor relevant in each investigation ?

Answers

Answer:

yes

Explanation:

Therefore, it is necessary to examine all underlying factors in a chain of events that ends in an incident. The important point is that even in the most seemingly straightforward incidents, ...

Why HPE education is made compulsory in the secondary level of education in nepal?Give reason.​

Answers

Answer:

in order to make the people aware about the importance of health, environment and population education. in order to create a proper relationship between human and nature. to stop health related superstitious beliefs. in order to create a platform where the students are able to know the importance of nature so that they can effectively solve the energy crisis problems in coming future, to make good sense of population control with management of natural resources

Health and Physical Education is important as it helps the students to live a healthy life.

Health and Physical Education is required as young people are taught the skills and lifestyles that will enable them live a lifestyle that's healthy.

Learning HPE will help encourage such students to live a satisfying live as well. Students are also taught about how they can contribute positively to the society and the country as a whole.

In conclusion, Health and Physical Education is important as it contributes to the good health of the country and has a positive impact on the country.

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Why do you think some ectopic pregnancy locations are more common than others?

Answers

Answer:

The fallopian tube is the most likely place for implantation, because this is the natural path of travel for the sperm. Ectopic pregnancies in different regions of the fallopian tube suggest that the egg gets implanted immediately after fertilization. Abdominal pregnancy is especially unusual, because this is not a normal path for the fertilized egg to take. The cervical pregnancy looks like the fertilized egg transplanted much farther down than normal.

Explanation: From pluto :)

Answer:

The fallopian tube is the most likely place for implantation, because this is the natural path of travel for the sperm. Ectopic pregnancies in different regions of the fallopian tube suggest that the egg gets implanted immediately after fertilization. Abdominal pregnancy is especially unusual, because this is not a normal path for the fertilized egg to take. The cervical pregnancy looks like the fertilized egg transplanted much farther down than normal.

Explanation:

Bobby's father has been prescribed an oral hypoglycemic drug. Such drugs act: 1. To reduce insulin resistance 2. To decrease the body's need for glucose in body cells 3. To prevent the formation of glucose 4. As an insulin replacement"

Answers

Answer:

3rd one.

To prevent the formation of glucose

does successfully completing a driver education course
guarantee that you become a safe driver??
a. True
b. False

Answers

Answer:

Successfully completing a driver education course will guarantee that you become a safe driver.

Explanation:

Nearly a quarter of all new drivers will be involved in a collision or convicted of a traffic offense during their first year of driving. hope this helps you :)

Face coverings are a better source control, meaning
they offer protection for everyone
they don't protect anyone
they only protect the wearer
they protect others from you
Help ASAP

Answers

They offer protection for everyone.
Sorry that’s what I’m gathering from SARS-COC-19

Which of these is NOT a biological contaminant?

Answers

So where are the options?

What can you do to teach someone to be less prejudiced?

Answers

Show them what the people who are being ?prejudiced? are really like, tell them how the people feel when being prejudiced, show them how to act around said prejudiced people

John is a 15 year old young man who is struggling in school, smoking pot, and rebelling pretty strongly against his parents. He tells the therapist that his parents are "devils from hell" and he hates them. He also seems to be depressed and not wanting to do much of anything but smoke. Give 3 possible diagnoses for John and explain why you selected each one.

Answers

Answer: Despite his hatred towards his parents, I would definitely suggest to John that it would be probably a good idea to take some time out of your day and talk to his parents, let them know how he truly feels. Why? Because if he does, maybe his parents will realize the bad things they have done to make John feel the way he feels, and change the way they act.

Another suggestion that I would provide John would be to stay calm, and avoid anything negative. Why? If he does this, over-time, his depression would get better, instead of the negative things in his life making it worse.

Lastly, another suggestion I would provide John includes medical attention. Depression can’t be cured just with avoiding problems. You need to take medicine as well. So, what I would suggest is for John to go see a doctor who is familiar with depression, anxiety, and all that Jazz, so that the doctor can provide John a few medicines he should take daily.

Despite the fact that John despises his parents, I would urge him to talk to them and let them know how he really feels.

What is depression?

Depression is defined as a widespread and significant medical condition that has an adverse impact on how you feel, think, and behave. Major depression is challenging since it has numerous underlying causes. The way your brain controls your moods can be impacted by elements like genetic susceptibility, extreme life stressors, substances you may use, and medical disorders.

John would also get medical care from me. Avoiding difficulties alone won't help someone with depression. You must also take your medication. Therefore, I advise John to visit a doctor who is experienced in treating depression, anxiety, and other related conditions so that the doctor can prescribe a few medications for John to take every day.

Thus, despite the fact that John despises his parents, I would urge him to talk to them and let them know how he really feels.

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Mr. Pochettino created a secret ingredient for a breath mint that he thinks will “cure” the bad breath people get from eating fish tacos at the Taco Tent. He asked 100 customers with a history of bad breath to try his new breath mint. He had fifty customers (Group A) eat a breath mint after they finished eating a fish taco. The other fifty (Group B) also received a breath mint after they finished the taco, however, it was just a regular breath mint and did not have the secret ingredient. Both groups were told that they were getting the breath mint that would cure their bad breath. Two hours after eating the fish tacos, thirty customers in Group A and ten customers in Group B reported having better breath than they normally had after eating fish tacos. What did Mr. Pochettino measure in his experiment? Identify the independent variable, dependent variable, and what Mr. Pochettino's conclusion should be.

Answers

Answer:

Explanation:

The group that is recieving the 'intervention' is the experimental group. & The group of people that are not receiving the intervention,they are only for comparison purpose with the experimental group is the control group.

The outcome of the experiment is the dependent variable.

The rest of the variables are independent variables.

1)The people that are not receiving the new breath mint ,are the control group. Group B is the control group.

2)All the customer (both Group A & B ) had bad breath at the start of study i.e., before intervention.

So, Bad breath is an independent variable.

Secondly, all the person are eating krabby patties.

So, ingestion of krabby patties is also an independent variable.

3)The outcome of the study is dependent variable.

So bad breath get cured/or not is the dependent variable.

4)Group A is receiving the new breath mint.So Group A is the experimental group.

Answer:

The independent variable is are all of the variables left after the dependent variable is recognized.  The dependent variable is the result of the expierement.  Independent variables: Stinky breath and ingestion of the tacos.  Dependent variables: The outcome of the expierement.  The outcome is basically rather or not the stinky breath was cured or not.  Mr. Pochettino's conclusion should be that the secret ingredient, does indeed, definately have a positive effect on curing stinky breath.

Explanation:

The group of people that are collecting the 'intervention' is known as the experimental group of people.  The group that is not collecting the 'intervention', well, they are simply just for comparison purposes along side the experimental group.  The experimental group of people  is also known as the group that is in charge.  The dependent variable is whatever the outcome of the experiment is and the independent variables are all of the variables that are left.  Group B is the group that is in charge.  They are the people that will not receive the new breath mint.  Both, group A and group B, had stinky breaths at the start of this study.  This means before intervention.  First, with that being said, bad breath is then known as an independent variable.  Second, all of the people are eating fish tacos.  That then makes ingestion of the tacos an independent variable as well.  With all of this now recognized, the outcome of the study is known as the dependent variable.  Basically, the dependent variable is if the stinky breath is cured or not cured.  Finally, group A is receiving the new breath mint making them now the experimental group.

Mr. Bauer is 49 years old, but eighteen months ago he was declared disabled by the Social Security Administration and has been receiving disability payments. He is wondering whether he can obtain coverage under Medicare. What should you tell him?

Answers

Answer:

d

Explanation:

After receiving such disability payments for 24 months, he will be automatically enrolled in Medicare, regardless of age.

Mr Bauer should be informed that he may be eligible for coverage under Medicare due to his disability status.

Medicare provides health insurance coverage for individuals who are 65 years old or older, as well as individuals with certain disabilities. If Mr. Bauer has been receiving disability payments from the Social Security Administration for at least 24 months, he should qualify for Medicare based on his disability.

It is recommended to contact the Social Security Administration or visit their website to learn more about the specific requirements and application process for Medicare coverage based on disability.

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Modern farming methods require more
inputs which are manufactured in industry. Do you
agree?​

Answers

Answer:

yes

Explanation:

it is true that modern farming methods require more inputs which are manufactured in industry. for eg: HYV seeds, insecticide, pesticide and chemical fertilizer needed for increasing the yield per Hector are all manufactured in industries.

Which kingdom of organisms is being described here?

1. Cannot move

2. Makes it's own food

3. Made of more than one cell

4. Cells have a nucleus

Answers

Answer:

Kingdom Plantae

Explanation:

plants cant move

they make their own food

they are made of many cells

their cells have a nucleus

Question 1(Multiple Choice Worth 3 points)
(06.01 MC)
Richard's doctor says that he has become obese. What health risks is Richard now facing?
Early signs of cardiovascular disease and sleep apnea
Unease getting around and breathing difficulties
Insulin resistance and low blood pressure
Bone thickening and respiratory problems

Answers

Answer:

early signs of cardiovascular disease and sleep apnea

Explanation:

please help asap! Compare and contrast the early adolescence period to the late adolescence period.

Answers

Explanation:

new changes like for males growth in beard...shoulders line out...adams apple protrudes...for females...puberty...protrution in breast

Answer & Explanation:

When teens begin to think about themselves more often they have entered into the Early Adolescent period.  They begin to gain very little regrets for other's points of view.

Once they have reached the Late Adolescent period they are more likely to think about other people and their point of view.  At this point in the stage, they are more sensible when making a decision and they better understand the consequences that their actions could lead them to.

Claudia is worried about getting osteoporosis like her grandmother. Which foods should she eat to help prevent osteoporosis? Check all that apply.

Answers

Answer:

The safest strategy is eating a diet that's low in salt and rich in fresh and minimally processed whole grains, fruits, and vegetables. Include enough calcium and vitamin D from foods, and supplements if necessary, and be sure to limit caffeine and carbonated drinks.

Green leafy vegetables: broccoli, kale, collard greens, dried figs, turnip greens, and mustard greens. Fish: canned salmon and sardines with the bones. Nuts: almonds and Brazil nuts. Enriched foods: cereals, orange juice, beverages, and breads that have calcium added to them.

Explanation:

Answer:

Dairy, Fish, Vegetables, Lean Meats, Fruits

Explanation:

I did it

A newly licensed nurse is attending the hospital orientation training class. Which statement made by the newly licensed nurse indicates understanding of the term "point of care"?

a. "Point of care refers to interventions or testing that takes place using a transportable, portable, or a handheld device near or at the bedside of the client."
b. "Point of care refers to the name of the handheld device."
c. "Point of care interventions and testing do not include any type of specimen testing."
d. "Point of care refers only to testing that takes place using a handheld device near the client."

Answers

Answer:

its a) point of care refers to interventions or testing that takes place using a transportable, portable , or a handheld device near or at the bedside of the client

kassiis253 01/23/2019 Health Middle School +5 pts Answered Which are entrepreneurial jobs in the nutrition and wellness field? A.) catering B.) universities C.) government agencies D.) national gorcery store chain E.) sports trainer for the Olympics

Answers

Answer:

A. Catering

Explanation:

Catering involves the preparation of different food and snack items for sale to the consumers.A caterer has to be knowledgeable about nutrition so as to prepare meals which are fit for consumption.

An entrepreneur works on his/her and sets up the business. The remaining options all deals with different government agencies. The only option which depicts entrepreneurial skill is catering.

Analyze physical activities from which benefits can be derived. Name and describe three strength training exercises that can be performed by a person that works out at least 3 times a week doing a variety of exercises at the gym and then discuss at least two health benefits of strength training.

Answers

Answer:

planks : they're a very good way to exercise our upper body, there are different types of planks that can be useful to the human body. they help in building the muscles in our biceps and triceps

squats : they help in strengthening the muscles in our thighs and below the knees. they're a very efficient way of exercising our lower body.

crunches: Partial crunches can help strengthen your back and stomach muscles. they help your back muscles.

Explanation:

avoid doing them if you feel difficulty

Physical activity like walking, wheeling, indoor and outdoor sports like swimming, or active recreation benefits health.

Physical activities that are helping to strengthen muscles and build bone structure include swimming and playing basketball.

It s also helps in  maintain a healthy weight by activities such as aerobic dancing, jumping rope, and cycling, and more.

Three strength training exercises that can be performed by a person are:

Squats: strengthening the muscles of thighs and calf muscles. Crunches: these can help strengthen the backbone, back muscles, and stomach musclesPlanks: help building strength in the upper body and help in building the muscles in our biceps and triceps

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can any one help me i need it right now pleas and thank u for Guidelines for Eating

Answers

Answer:

Eat a variety of vegetables, especially dark green, red, and orange vegetables.

Eat a variety of fruits.

Eat whole-grain, high-fiber breads and cereals

protein is also a much needed food

Explanation:

A person infected with genital herpes can pass on the infection, even if _____ are not present. chancre sores pus and mucus discharge and itch painful blisters

Answers

Answer:

Even if there are no sores because the virus is still in the body.

Explanation:

Because the virus is still in the body.

- Hope this helps=^)

What is the chain of infection?
A
a set of conditions that allow diseases to occur and spread
B.
an accumulation of pathogens in a reservoir
C.
the continuous cycle of diseases becoming more advanced
D.
the ways to stop pathogens from spreading
Reset
Next

Answers

Answer:

i think A

let me know if right

Answer:

I cant comment but chantelle 32506 is right

Explanation:

What are the differences between safety practices in restaurants and home kitchens? Consider both food safety and kitchen hazards.

Answers

Answer:

you chose what you want to know

Explanation:

get a cookbook or listen to a cooking book or get on the internet

FOR 40 POINTS!!!!

What is the function of a vascular spasm?

A) it plugs the wound area prior to the adherence of platelets.

B) it constricts the wound area prior to fibrin formation

C) it plugs the wound area after the adherence of platelets

D) it constricts the wound area after fibrin formation

Answers

Answer:

B. It constricts the wound area prior to fibrin formation.

Explanation:

Before the formation of fibrin, vascular spasm constricts the wound area.

Vascular spasm

It is the narrowing of the arteries resulting due to persistent contraction of the blood vessels, also called vasoconstriction.

This can diminish the flow of blood, this can influence any part of the body.

Vascular spasm or vasoconstriction is one of the steps of hemostasis.

It is a brief reflexive contraction at the time of hemostasis, which makes a decrease in the flow of blood to the region.

This takes place just prior to the formation of platelet plug by fibrin.

The formation of platelet plug takes place directly after the rupturing of blood vessel takes place.

After some minutes, the formation of platelet plug takes place completely by fibrin.

Thus, the correct answer is option B.

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What is the second part of the five-and-five approach called? Henry maneuver Heimlich maneuver abdominal maneuver back maneuver

Answers

Answer:

Heimlich maneuver

Explanation:

Answer:

Heimlich Maneuver

Explanation:

edge2020

Why avoid soda in an optional
meal plan

Answers

Answer:

So you don't get chubby lol I love the word chubby

Explanation:

why would you perform a pain assessment on a patient?

Answers

Answer:

To give them the right treatment

Explanation:

If they have cancer you can’t really give them a flu shot.

HIV is a disease that reduces T cell production in the immune system. Would HIV increase or decrease a person's chance of developing cancer cells? a. The person's chances would increase because T cells can destroy cancer cells. b. The person's chances would increase because T cells prevent cancer cell division. c. The person's chances would decrease because T cells create lymph, which reduces cancer cell growth. d. The person's chances would decrease because T cells are especially susceptible to becoming cancerous.

Answers

The correct answer is A. The person's chances would increase because T cells can destroy cancer cells.

Explanation:

One of the main functions of the T cells as part of the immune system is to recognize infected or abnormal cells including cancer cells and destroy these. This means, an appropriate function and production of T cell help to the prevention of cancer. This does not occur in HIV patients as HIV affects the immune system including T cells, due to this, the production of T cells is low or there is not appropriate. In this context, HIV patients are more vulnerable to cancer of have more chances to develop this disease.

Answer: A. The person's chances would increase because T cells can destroy cancer cells.

Explanation:

Other Questions
The HR department at Trevor Communications oversees the recruitment and training of employees at the firm.As the firm grows and recruits more employees,overseeing individual training programs has been come too much for HR staff to handle.Which of the following applications should the HR department use to help with employee training?A) A customer relationship management systemB) A management information systemC) A learning management systemD) A decision support systemE) An executive decision-making system An annuity provides for 30 annual payments. The first payment of 100 is made immediately and the remaining payments increase by 8 percent per annum. Interest is calculated at 13.4 percent per annum. Calculate the present value of this annuity. Which conclusion can be drawn from the experimental observation that a single strand of DNA contains 2100 dA residues and 1800 dT residues? need help will give 5 stars. please can someone help me solve this.. please help!! A practice, favored by unions, which contractually binds employers to hire only workers who are already members of the union is called a(n): PLEASE HELP, WILL GIVE BRAINLIEST IF CORRECT!!!! (08.06 MC) Mike and his friends bought cheese wafers for $2 per packet and chocolate wafers for $1 per packet at a carnival. They spent a total of $25 to buy a total of 20 packets of wafers of the two varieties. Part A: Write a system of equations that can be solved to find the number of packets of cheese wafers and the number of packets of chocolate wafers that Mike and his friends bought at the carnival. Define the variables used in the equations. (5 points) Part B: How many packets of chocolate wafers and cheese wafers did they buy? Explain how you got the answer and why you selected a particular method to get the answer. (5 points) Dump out half of the particles. Place your hand tightly over the top and shake the container. Then remove most of the remaining particles, and shake the container again. Compared with the full container, which states of matter do these two models most closely represent? Explain. Evaluate the following expression. 8 (10) 7 1/1 What makes something that you read exciting to you and makes you want to continue reading it? Which quadratic equation would be used to solve for the unknown dimensions?0 = 2w2512 = w2512 = 2w2512 = 2l + 2w If sin = 5 over 6, what are the values of cos and tan ? Which statement contains the best example of understatement?A. Pink cherry trees crowded the lane that ran down the center of thebig campus.B. I put on my newly laundered shirt and began to strut around like apro golfer.C. Given that she had saved my life, I decided that some thanks werein orderO D. The smell of freshly baked cinnamon rolls from across the streetwas life alteringSUBMIT The following information is for the standard and actual costs for the Happy Corporation: Enter favorable variances as negative numbers. Standard Costs: Budgeted units of production - 16,000 [80% (or normal) capacity] Standard labor hours per unit - 4 Standard labor rate - $26 per hour Standard material per unit - 8 lbs. Standard material cost - $12 per pound Standard variable overhead rate - $15 per labor hour Budgeted fixed overhead - $640,000 Fixed overhead rate is based on budgeted labor hours at 80% (or normal) capacity.Actual Cost:Actual production - 16,500 unitsActual fixed overhead - $640,000Actual variable overhead - $1,000,000Actual labor - 65,000 hours, total labor costs $1,700,000Actual material purchased and used - 130,000 lbs, total material cost $1,600,000Actual variable overhead - $1,000,000Determine the Quantity Variancea. 24,000 unfavorableb. 24,000 favorablec. 12,000 unfavorabled. 12,000 favorable De qu manera saber el tiempo de persistencia del virus en distintas superficies es til para los cientficos What was the result of the raid Harpers Ferry in 1859? A. Increased tensions between the North and South B. A victory for the Confederacy C. A Successful slave revolt D. An easing of tensions between the North and South 4x=24 solve equation If n is a positive integer divisible by 3 and n is less than or equal to 44, then what is the highest possible value of n? You are the driver of the car in the photos above. You Are traveling at 30 mph when suddenly the car goes from its position in the first photo to the position in the second photo. What is happening Which of the following explains why a control is important in a case-control study of a disease? The researchers need to control the bias that those who contracted the disease may create when they talk to others. The researchers need to compare those who contracted the disease to those who did not. The researchers need to compare those who contracted the disease to those who contracted previous diseases. The researchers need to control the disease so that it is not spread further.