PLEASE HELP!!! Iodine 131 has a half-life of about 8 days. How long will it take for the radiation of the isotope to go from 100 g to 12.5 g?

Answers

Answer 1

Answer:

After four half lives or 32 years, only 12.5 grams will be left.

Hope it helps :)

PLEASE HELP!!! Iodine 131 Has A Half-life Of About 8 Days. How Long Will It Take For The Radiation Of

Related Questions

Compartmentalization allows cells to establish physical boundaries for biological processes that enables the cell to carry out different metabolic activities at the same time. Researchers have found that the cytoplasm has a pH of 7.6 while the pH of the intermembrane space (IMS) of the mitochondria is 6.9. What conclusion can you draw from this information

Answers

The difference in pH between the cytoplasm and the intermembrane space of the mitochondria indicates that compartmentalization is occurring in the cell.

Compartmentalization is the process of establishing physical boundaries within a cell to keep different biochemical processes separate. This allows the cell to carry out different metabolic activities at the same time and in different environments. T

he acidic pH of the IMS compared to the neutral pH of the cytoplasm suggests that compartmentalization is occurring and that different processes are occurring in these two distinct spaces. The acidic pH in the IMS could be ideal for some biochemical reactions while the neutral pH in the cytoplasm could be ideal for other reactions.

Therefore, this difference in pH confirms that compartmentalization is occurring and allows the cell to perform multiple biochemical processes simultaneously.

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I need help on question 15 please

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The overall force in Newtons the ostrich egg would experience would be 19.6 Newtons.

What do you mean by Force?

Force is an influence that can change the motion of an object, cause an object to change shape, or produce motion or stress in a stationary object. It is basically a vector quantity, meaning it has both magnitude and direction. Examples of forces include gravity, friction, and electric and magnetic forces.

This can be calculated by using the equation mv = p, where m is the mass of the object (1.4 kg in this case), v is the acceleration (14 meters per second), and p is the overall force. Thus, p = 1.4 kg x 14 m/s = 19.6 N.

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In a flower, red is dominant to white. If two
white flowers are crossed, what are the
chances that any of the offspring will be red?

Answers

Answer:

The crossing of a red flowered plant and a white flowered plant produces all the offspring with pink flowers. This cross illustrates red and white exhibit incomplete dominance. This situation occurs due to the blending of both the alleles

Explanation:

CORRECT ME IF I AM WRONG

how the expansion of housing developments in southern California might limit coyote population in the area

Answers

Answer:

Explanation:

There are several ways in which the expansion of housing developments in southern California might limit coyote population in the area:

Habitat loss: As housing developments are built, natural habitats are often destroyed, which can limit the available space for coyotes and other wildlife.

Human-wildlife conflict: As housing developments bring more people into close proximity with coyotes, there is an increased likelihood of conflict between humans and coyotes. This can lead to coyotes being killed or removed from the area.

Fragmentation of habitat: The expansion of housing developments can also lead to the fragmentation of coyote habitat, making it more difficult for coyotes to move and interact with other members of their species.

Changes in prey availability: Housing developments can also alter the availability of prey for coyotes, which can impact their population size.

Overall, the expansion of housing developments in southern California can have a negative impact on coyote populations by limiting their habitat, increasing the likelihood of conflict with humans, and disrupting their natural behaviors and ecological relationships.

Why antibiotics are classified as drugs and useful drugs? Please helpp

Answers

Answer:

Antibiotics, also known as antibacterials, are medications that destroy or slow down the growth of bacteria. They include a range of powerful drugs and are used to treat diseases caused by bacteria. Antibiotics cannot treat viral infections, such as cold, flu, and most coughs.

Explanation:

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Answers

Answer:

2

Explanation:

Edit- lol i just guessed

Answer:

X needs 2 and that will balance out you equation

So the answer would be 2!

Explanation:

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Why must cells have an upper and lower limit to their size?

Answers

Cells are the basic building blocks of life and, as such, are essential for the functioning of all living organisms. For that reason, it is important for cells to have an upper and lower limit to their size. These limits serve vital roles in cell structure, function, and metabolism.

The upper limit to cell size is important because too large of a cell can cause problems with cellular communication and the distribution of nutrients throughout the cell. In general, larger cells are more difficult to maintain, as they require more energy and resources to sustain their structure. If a cell exceeds its upper limit, it becomes too big to be supported by the metabolic resources available to it and eventually dies.

The lower limit is also important for cellular function. Cells that are too small have difficulty forming necessary structures and have a harder time performing certain metabolic processes. This is because small cells are limited in the number of organelles they can contain and the number of molecules they can process. Small cells are also less efficient in their use of energy and resources, making it difficult for them to survive in certain environments.

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What is the genotypic ratio for 50 50?

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A test-cross should result in 50% of all children having the bb genotype and a white phenotype if the male is Bb as previously described. After a testcross to a heterozygous person, there should always be an about 1:1 ratio between the dominant and recessive characteristics. Therefore, the genotypic to phenotypic ratio in this instance is 50:50.

The parts of an organism's genome that make up its genotype. The set of alleles or genetic variations that a person possesses inside a certain gene or genetic area is also referred to as their genotype. The number of copies of each chromosome found in that species, or ploidy, determines how many alleles a person can have for a given gene. Each person has two alleles for each gene since humans are diploid (have two full sets of chromosomes). Homozygous is the term used to describe a genotype where both alleles are the same. The genotype is referred to as heterozygous when there are two distinct alleles.

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What foods are rich in proteins?
Animal products
Fruits
Vegetables
Carbohydrates

Answers

Answer:

Animal products, sometimes vegetables

Explanation:

Animal products, sometimes vegetables. This is because all animals are made with protein.

Answer is C.) Vegetables

Which two molecules bond together to form a disaccharide?

Answers

Answer:

Monosaccharides

Explanation:

Joining two Monosaccharides will create a Disaccharide. For example, the monosaccharides, glucose, and fructose bond together to form the disaccharide sucrose, which is produced by plants and is used in white sugar.

which sentence is an example of a run-on sentence as a scared for birds and their winter he can help by feeding them

Answers

When two separate clauses are combined without the required punctuation or conjunctions, the phrase becomes run-on.

Food is scarce for birds in the winter you can help by feeding them.

Comma splicing and run-on sentences are mistakes that go hand in hand. While a comma splice happens when a comma is used to divide two distinct clauses, a run-on sentence happens when numerous independent clauses are not punctuated or connected in a single phrase.

Run on means to continue: continue. To continue (stuff in type) without a pause or a new paragraph: transitive verb run in. : To add or add anything to the conclusion of a paragraphed item, such as an entry from a dictionary.

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compare the air pollution of Uttar Pardesh, Arunachal Pradesh, and Meghalaya

Answers

Answer :uttar Pradesh is more polluted than any of these.

Explanation:

Darwin observed how farmers and breeders produced many kinds of farm animals and plants. These plants and animals had traits that were desired by the farmers and breeders. He also noticed how the study of similar body structures and vestigial organs could add to the evidence of evolution. After performing several breeding experiments, he came to certain conclusions and formulated some theories. His theory of evolution and natural selection is the most accepted one.

What is the reason behind the acceptance of Darwin's theory?
Responses
A It is based on the practical example of Lamarck’s theoryIt is based on the practical example of Lamarck’s theory
B It is supported by its harmonizing with other views.It is supported by its harmonizing with other views.
C It is based on the ideas of earlier hypothesis and laws.It is based on the ideas of earlier hypothesis and laws.
D It is supported by practical evidence and examples.It is supported by practical evidence and examples.

Answers

The reason behind the acceptance of Darwin's theory is based on D It is supported by practical evidence and examples which help to shape a scientific theory such as in this case.

Why is important the presence of evidence to formulate a scientific theory?

The presence of evidence is key to formulating a scientific theory because all theories in sciences are based on the repetitive observation of empirical data that can be used to make predictions and thus tested i.e., confirmed or rejected by experimental or observational procedures such as in the case of the evolutionary theory proposed by Charles Darwin to explain the origin of species.

Therefore, with this data, we can see that the presence of evidence is fundamental in order to formulate a scientific theory since this info allow us to understand a given observation of the natural world and also allow us to make predictions.

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What makes a body of water a lake?

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If a body of water satisfies the following requirements, it is typically referred to be a lake. There is a body of still water there that is encircled by land. It does not belong to or connect to an ocean or sea, nor is it a river or other body of water that does.

Its features are not reliant on those of another body of water since it has its own ecology. It is a sizable body of water, often larger than a pond, and ranges in size from little ponds to enormous lakes like Lake Superior and Lake Victoria.

Although it can be constructed by human activity such as damming a river or glacial activity, this reservoir was not made by humans.

It's worth noting that the definition of a lake can vary depending on the region, and some bodies of water that are called lakes in one area may not be considered lakes in another area. Additionally, some bodies of water that meet these criteria may not be referred to as lakes, but rather as bodies of water such as a loch in Scotland or a fjord in Norway.

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Why do great white sharks travel over long distances?

Answers

Answer: they travel far cus they have to eat new food to eat when the water temperature gotta be cool

Explanation:

NEED HELP ASAPPP PLSSS

Answers

Answer:

Parent 1 genotype-D

Parent 2 genotype-d

Punnet Square: Top-D,d

Left side- D,d

Inside square(from left to right):DD,Dd,Dd,dd

3 children should have dimples

The pathogens that generate the production of antibodies and are part of your active immunity are called A. T cells B. B cells C. antibodies D. antigens​

Answers

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

The pathogens that generate the production of antibodies and are part of your active immunity are called :

A. T cells

B. B cells ✔

C. antibodies

D. antigens

▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬

Answer:

cell

Explanation:

b) cell is correct

Write a claim evidence and reasoning on Do trees change the composition of the atmosphere around us?

Answers

Answer:

Claim: Trees change the composition of the atmosphere around us.

Evidence: Trees absorb carbon dioxide from the atmosphere through the process of photosynthesis and release oxygen back into the air. This process helps to regulate the concentration of these gases in the atmosphere and can affect the overall composition of the air.

Reasoning: Photosynthesis is a fundamental process that occurs in plants, including trees. During photosynthesis, trees absorb carbon dioxide from the air and use it, along with sunlight and water, to produce energy and grow. As a byproduct of this process, trees release oxygen back into the air. This exchange of gases between trees and the atmosphere helps to regulate the concentration of carbon dioxide and oxygen in the air and can affect the overall composition of the atmosphere. Therefore, it is reasonable to conclude that trees do change the composition of the atmosphere around us.

Can someone help me? ​

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46 Please Brainliset me

Some traits follow non-Mendelian patterns of inheritance. Which is the best term for these patterns based on the reading?

Answers

Some traits follow non-Mendelian patterns of inheritance, polygenic traits is the best term for these patterns based on the reading.

The non-Mendelian inheritance pattern is known as what?

They are referred to as polygenic traits. The phenotype is slightly amplified by the alleles of each gene. Particularly if each gene has multiple alleles, there are numerous allele combinations that could exist. As a result, a vast spectrum of phenotypes is possible. Adult height is an illustration of a polygenic trait in humans.

Any trait that has a gradient, such as height, skin tone, hair color, nose size, or shape, is non-Mendelian, polygenetic, and influenced by numerous alleles. Another instance of a polygenetic trait that is not Mendelian is eye color.

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Describe in detail the process of Natural Selection / Evolution.

Answers

Natural Selection is the process by which the most adapted, or fittest, species survive and the least adapted, or unfit, species do not survive. An example of Natural Selection is if there are two species of birds that eat the same thing, but one of the species has a beak that makes it harder to eat the food, naturally the species that has the beak fit to eat that food will survive. The species that is not fit to eat that food will either adapt or will be unable to survive. Evolution is a species adapting to the enviornment over a period of time. There is microevolution and macroevolution.

Which of the following is not true about sexual reproduction?

A.) Sexual reproduction involves gametes.
B.) Through sexual reproduction, traits and characteristics of the species are passed to the offspring.
C.) Most multicellular organisms reproduce through sexual reproduction.
D.) Sexual reproduction involves the simple division of a cell.

Answers

B is the answer.

As sexual reproduction results in genetic variation. So the traits are not passed.

The picture illustrates three cross sections of rock layers from three different areas.
1
2
3
U
w
Y
X XT
PANEN
za
-
00
0
OO
0001

Answers

Answer:

hii can u PLZ put up the picture so that I can help u with this.Have a great day or night

A fixed pattern of long and short notes that is repeated or varied is known as a. a cantus firmus. b. a rhythmic mode. c. a melisma. d. organum.

Answers

A cantus firmus (Latin for "fixed song") is a pre-existing melody used as the basis of a new composition. So option a is correct.

It is most commonly found in the form of a long and slow-moving melody, which is then repeated or varied by the composer. The cantus firmus was a popular form of composition in the Middle Ages and Renaissance eras, used by composers such as Josquin des Prez, Palestrina, and Orlando di Lasso.

A rhythmic mode is a pre-existing pattern of strong and weak beats used as the basis of a new composition. It is a more varied form of composition than the cantus firmus, as it contains not only long and slow-moving notes, but also fast and light notes. The rhythmic mode is found in music from many different cultures, such as African, Indian, and Latin American. Composers such as Bach, Beethoven, and Mozart used rhythmic modes in their compositions.

A melisma is a type of vocal ornamentation in which several notes are sung on the same syllable. It is a popular form of singing in many musical styles, including jazz, gospel, and classical. Melismatic singing is often used to express emotion or add color to a song. Composers such as Handel and Vivaldi used melismatic singing in their compositions.

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A desert biome gets two years of above average rainfall. As a result, there is more vegetation than normal. Which effect on the desert ecosystem is most likely?

Answers

Answer: herbivores will most likely thrive in this environment.

Why are there often so many steps between the original signal event and the cell's response?

Answers

This is because a variety of components must be integrated in order to accurately interpret and respond to the signal in a timely and effective manner.

The first step in this process is for the signal to be received and interpreted by the cell. This involves the binding of the signal molecule to a specific receptor, which triggers a cascade of cellular responses. This involves the activation of certain proteins, which then act as mediators of the signal within the cell and help to direct the response.

Once the signal has been received and interpreted, it must then be transmitted to the target organelle or region of the cell. This is done by a variety of molecules such as hormones, neurotransmitters, and growth factors. These molecules are released from the cell and travel to their target where they bind to specific receptors. This triggers a series of responses in the target organelle or region.

Finally, the cell must respond appropriately to the signal. This involves the activation of specific genes, which then produce proteins that alter the cells physiology and behavior. This is a process of gene expression that is tightly regulated and allows the cell to respond rapidly and accurately to the signal.

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What do the numbers on a pedigree mean?

Answers

The number on a pedigree mean the number at which the offspring is produced.

The numbers on a pedigree are used to represent the birth order of individuals within the family. Within each generation, people are numbered from left to right with Arabic numerals. Siblings are usually listed by age, with the oldest on the left. Additionally, Roman numerals are used to denote each generation in the family.

The pedigree is used extensively in genetics to track family history of disease in the offspring that are expected. The pedigree analysis serve as a tool in genetics for preparing genetic models to study disease transmission in families. And thus is a vital tool in classical genetics.

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HELP FAST PLZ TAKJNG A TEST !!!!!! Will give Brainly and 30 points !!

Answers

Answer: smog

Explanation:

Answer:

I believe the answer is B. Smog

Explanation:

Which one of the following is not a major pollutant of Chesapeake Bay?
a. Toxins
b. Wastes from aquatic organisms
c. Nutrients, particularly nitrogen and phosphorus
d. Soil and other sediments

Answers

I think the answer is C

Wastes from aquatic organisms is not a pollutant of Chesapeake Bay .

Major contributors to the poor health of Chesapeake Bay are nitrogen, phosphorus, and sediment. High levels of nitrogen and phosphorus fuel unnaturally high levels of algae growth in the water, blocking sunlight from reaching underwater grasses that serve as food and habitat.

What is pollutant?A pollutant is a substance that is present in concentrations that may harm organisms (humans, plants and animals) .It exceed an environmental quality standard. The term is frequently used synonymously with contaminant.

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Which of the following is true?
A. Renewable energy is over 90% of the energy
use in the United States.
B. There is NO renewable energy used in the
United States.
C. Renewable and fossil fuel energy use is about
equal.
D. Renewable energy use counts for less than
10% of the energy use in the United States.

Answers

Answer:

Renewable energy is over 90% of the energy use in the united states

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