Assignment: Determining Half-life Exploration


Data Table


Trial Amount Decayed Amount Left

1

50 50

2

26 24

3

12 12

4

6 6

5

3 3

6

3 0


Graph


Using the data from the table, make a graph of the number of atoms remaining after each trial.




Questions


1. How many trials did it take for half of the Virtualium atoms to decay?


1 trial






2. Suppose each trial equals 1,000 years. What is the half-life of Virtualium?


1000 years






3. Suppose each trial equals 1,000 years. After half (50) of the Virtualium cubes were removed from the box, about how long did it take for half of the rest of the cubes to decay?


5000 years






4. Imagine you have a radioactive sample containing both Virtualium and decayed atoms of Virtualium. After analysis, you find it contains 10 atoms of Virtualium and 40 decayed atoms. How old is your sample? (Hint: You must use the half-life of Virtualium determined earlier in the activity.)


It is 8000 years old.

Answers

Answer 1

Answer:

Ty<3

Explanation:


Related Questions

An advantage of asexual reproduction is that it __________. Group of answer choices allows a species to easily rid itself of harmful mutations enhances genetic variability in the species allows the species to endure long periods of unstable environmental conditions produces offspring that respond effectively to new pathogens maintains successful genetic combinations without modification

Answers

Answer:

Maintains successful genetic combinations without modification.

Explanation:

Asexual reproduction usually creates perfect copies of the parent. If the parent is genetically sound creature, then a successful genetic combination is being reproduced and maintained without any changes or modification.

CUAL ES MEJOR





REY JULIEN

O EL MAMON DE STEVEN UNIVERSE :D

Answers

Answer:poop

Explanation:

yuh poop

please answer this for me

Answers

the answer is D !!!!!!!

Answer:

maco shark

Explanation:

It is a fast speed-swimming shark that has been called “the peregrine falcon of the sharks” in allusion to the fastest bird in the world. It is considered an animal dangerous to humans because of the speed which can attack and its ability to jump into the fishing boats.

easy biology question below first correct answer gets brainliest

Answers

Answer

B

Explanation:

if,k

Answer:

the answer is ....C

.........

Be a Lunatic
A solar eclipse happens when --
the sun is directly between Earth and moon
the moon is in Earth's shadow.
the moon is directly between Earth and sun.
the sun blocks out light from Earth.

Answers

c- the moon is directly between earth and the sun

When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. Lunar eclipses can happen only when the Moon is opposite the Sun in the sky, a monthly occurrence we know as a full Moon.

Explanation: im just smart like that

True of false Mendel realized that when he crossed two pea plants that were the offspring of a pea plant with yellow peas and a pea plant with green peas 50% of the offspring had yellow peas and 50% of the offspring had greem peas.

Answers

Answer:

False

Explanation:

Mendel realized that the F2 had a phenotypic ratio 3:1, meaning 3/4 = 75% were yellow and 1/4 = 25% green.

Mendel observed that the F1 expressed only one of the alternative variants (in this case, only yellow seeds appeared), while the other variant (green) disappeared. Mendel named dominant the expressed variant. Mendel allowed auto pollination and observed that in the second generation, F2, the other disappeared variant reappeared. Both alternative variants were present in the F2. Mendel named recessive the second alternative variant.

Mendel thought that hereditary traits determined by discrete factors were the possible explication for these phenotypes. These factors should have been present in the F1 in pairs. One of them came from one parental plant, and the other factor came from the other plant. These factors then separated again when sex cells were produced, giving two types of gametes, each with only one factor.

Mendel concluded that each individual (plant) has a pair of factors (alleles), one for each trait (yellow and green) and that the pair separates (segregates) during the formation of the gametes. This conclusion is known as the segregation principle (First Mendels´ Low).

the more mass an object has, the more _____ it needs in order to move. A. Force B. Inertia​

Answers

Answer:

Force it need in order to move

Answer:

A. force

Explanation:

inertia is that it keeps moving force gets it moving

What do hypothesis, theories, and laws have in common ?

Answers

i have a great time today lol i i did

True/False. Genetic recombination makes it so your grandfather will always pass on more DNA to you than your grandmother

Answers

Answer: false

Explanation:

What are the two main components of the cell cycle

Answers

In eukaryotic cells, or cells with a nucleus, the stages of the cell cycle are divided into two major phases: interphase and the mitotic (M) phase.

In eukaryotic cells or cells with a nucleus, the stages of the cell cycle are divided into two major phases: interphase and the mitotic (M) phase.

What is  cell cycle?

The cell cycle, or cell-division cycle, is the series of events that take place in a cell that cause it to divide into two daughter cells. These events include the duplication of its DNA (DNA replication) and some of its organelles, and subsequently the partitioning of its cytoplasm and other components into two daughter cells in a process called cell division.

In cells with nuclei (eukaryotes, i.e., animal, plant, fungal, and protist cells), the cell cycle is divided into two main stages: interphase and the mitotic (M) phase (including mitosis and cytokinesis). During interphase, the cell grows, accumulating nutrients needed for mitosis, and replicates its DNA and some of its organelles. During the mitotic phase, the replicated chromosomes, organelles, and cytoplasm separate into two new daughter cells. To ensure the proper replication of cellular components and division, there are control mechanisms known as cell cycle checkpoints after each of the key steps of the cycle that determine if the cell can progress to the next phase.

In cells without nuclei (prokaryotes, i.e., bacteria and archaea), the cell cycle is divided into the B, C, and D periods. The B period extends from the end of cell division to the beginning of DNA replication. DNA replication occurs during the C period. The D period refers to the stage between the end of DNA replication and the splitting of the bacterial cell into two daughter cells.

Learn more about cell cycle

https://brainly.com/question/5034994

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Where are the pigments that trap the photons (light energy)?
A. in the stroma of the chloroplast

B. in the mitochondria

C. in the thylakoid disks of the chloroplast

Answers

Answer:

C. in the thylakoid disks of the chloroplast

Explanation:

These reactions occur in the thylakoid stroma and cytosol. Chlorophyll a is the only light-absorbing pigment in reaction centers.

Answer:

C. in the thylakoid disks of the chloroplast

Explanation:

The pigments that trap the photons (light energy) is located in the thylakoid disks of the chloroplast.

Mendel crossed yellow-seeded and green-seeded pea plants and then allowed the offspring to self-pollinate to produce an F2 generation. The results were as follows: 6,022 yellow and 2,001 green (8,023 total). Which of the following statements correctly describes the relationship of the allele for green soods to the allele for yellow seeds? A. The green allele is dominant to the yellow allele B. The two alleles exhibit incomplete dominance C. The green alicle is recessive to the yellow allele D. The two alleles are codominant

Answers

Answer:

C. The green allele is recessive to the yellow allele

Explanation:

Complete dominance occurs when one gene variant or allele referred to as the 'dominant allele' completely masks the expression of another allele referred to as the 'recessive allele' in heterozygous individuals, i.e., in individuals carrying one copy of the dominant allele and one copy of the recessive allele for a particular locus/gene (whereas homo-zygous individuals carry the same alleles for a given locus/gene). Mendel crossed pure lines of pea plants, i.e., homo-zygous lines for different traits such as seed color (yellow and green) and seed shape (round and wrinkled). In this case, the parental cross was YY x yy, where the 'Y' allele is dominant and encodes for yellow seed color, and the 'y' allele is recessive and encodes for green seed color. From this cross, Mendel obtained a hybrid F1 (i.e., all progeny was heterozygous with genotype Yy). An expected 3:1 ratio as observed in this case (6,022 yellow and 2,001 green seed >> 3:1 ratio) is characteristic of the progeny that results from mating between F1 heterozygous parents, where each parent has one dominant allele and one recessive allele, i.e., F1 parental cross: Yy x Yy >> F2: 1/4 YY (yellow color); 1/2 Yy (yellow color); 1/4 (green color) >> 3:1 ratio of yellow to green seeds.

Which of the following describes the relationship between genes and
chromosomes?

Chromosomes form into genes during cellular reproduction

Genes are special sequences of nucleic acids found on chromosomes

Every gene an organism has is found on every one of its chromosomes

All of an organism's chromosomes can be found next to its genes in the cell nucleus

Answers

Answer:

Genes are special sequences of nucleic acids found on chromosomes.

Explanation:

A single DNA molecule is a chromosome. A gene is a certain chromosome region of DNA.

All cells of the body are genetically the same, but cells are different from others because specific gene sets are expressed. Different cells, therefore express different genes, which enable them to perform a specific function.

The deoxyribonucleic (DNA) genes are segments that contain a code for a certain protein that works in one or several cell types in the body. Chromosomes are cellular structures that contain the genes of a person. Genes that are in the cellular nucleus are contained in chromosomes.

During exercise, what happens to breathing in humans?​

Answers

Answer:Your body uses more oxygen and produces more carbon dioxide.

Explanation:your breathing has to increase from about 15 times a minute (12 litres of air) when you are resting, up to about 40–60 times a minute (100 litres of air) during exercise.

Can you give me brainlist? Please?

Which describes the correct paring of DNA bases?

A. A with G, and C with T
B. A with T, and C with G
C. A with C, and T with G
D. A with A, and G with G

Answers

B. curvy letters (C and G) pair together

The Heart of a small mammal is pierced by a spear of a hunter. Suggest ONE way in which this would lead to the death of the animal.

Answers

Bleeding will lead to death

What happens to cause air to be exhaled from the lungs?
A)The rib muscles contract and move upward
B)The chest cavity expands and grows larger
C)The diaphragm relaxes and moves upward
D)The lungs contract and expand

Answers

Answer:

The answer is C.

Explanation:

When you breathe out or exhale, your diaphragm relaxes and moves up into your chest cavity. As the space in your chest cavity gets smaller, the air rich in carbon dioxide is forced out of your lungs and windpipe, and then out your nose or mouth.

answer: C: The diaphragm relaxes and moves upward

Which graph represents selection that may lead to reduced variation
in a population?

Answers

The frequency graph represents selection that may lead to reduced variation in a population.


When classifying an unknown organism, scientists are most likely to consider its
A age
as important evidence.
B color
C) structure
D number of offspring

Answers

Answer:

structure

Explanation:

idrk im guessing the scientists guests as well

Carol's little brother was at the duck pond in the park. He tried
to catch one of the ducks. Even though the duck would almost
let him touch him, the duck would run away. This is an example
of the duck responding to
O
trying to reach homeostasis.
a change in the metabolism.
O
a change in body temperature.
O
fight or flight.

Answers

Answer:

O fight or flight

Explanation:

The duck is afraid of Carol's little brother, even though the duck would almost let him get close

Flight of fight because it’s a response of a reaction and nervous system responses to the body

The pancreas is an organ connected to the digestive tract of humans by a
duct (tube) through which digestive enzymes flow. These enzymes are
important to the digestive system because they

Answers

Answer: The enzymes are important to the digestive system because they help in BREAKING DOWN of food substances that contains fat, carbohydrates and proteins.

Explanation:

In the process of digestion, several substances are secreted into the duodenum which is the first part of the small intestine. The pancreas, through the pancreatic duct, secretes pancreatic juice. This juice contains several digestive enzymes which include:

--> Amylopsin- This helps in the breaking down of starch( CARBOHYDRATES) to maltose.

--> trypsin: this is a protease that helps in the breaking down of PROTEIN into polypeptide.

--> Lipase: This helps in the breaking down of FAT to carboxylic acids and glycerol.

All the above enzymes of the pancreatic juice require an alkaline medium to work in. This is provided by the bile which is secreted in the fall bladder.

What are the raw materials (reactants/goes into) for photosynthesis?
A. water and glucose

B. carbon dioxide and water

C. glucose and oxygen

Answers

Answer:

c

Explanation:

Carbon Dioxide and Water. Disregard other answer.


The cones of a pine tree open in response to heat from a forest fire. The seeds are released
and are spread over a wide area. Hundreds of pine seedlings per acre grow, along with other
plants. Animals eat the plants, and the forest regenerates. This process is an example of

Answers

Answer: I believe it’s an example Natural processes

Explanation: Natural processes are interactions among the plants, the animals, and the environment.

These interactions also include photosynthesis, pollination, decomposition and others, that help create and shape natural communities.

los derechos sexuales son iguales a los reproductivos? porfa help

Answers

El teme son up poco differente porque hay differentes lados


1. Do plants, like animals, have traits that increase their reproductive success? What are some of these
traits?

Answers

Examples of animal behaviors that affect the probability of plant reproduction could include transferring pollen or seeds, and creating conditions for seed germination and growth.

A function of chloroplasts in plant cells is to:
A. absorb water.
B. fold proteins:
C. make carbohydrates.
D. store wastes.

Answers

Answer:

A

Explanation:

What are the two main functions of chloroplasts? are to produce food (glucose) and to store food energy.

The correct answer is A

What part of mitosis is this cell going through?

Answers

lsmskselenwlendkebejdb

Answer:

I think metaphase

Explanation:

The chromosomes are in the middle and the spindle fibers are attaching to them

PLEASE HELP ITS DUE TOMORROW
based on Mr. Kaku's assertion that knowing what the stars are made of is as easy as running starlight through a prism, use the CER method to explain the use of light to determine composition of a star in detail.

Answers

Answer:

spectroscopy.

Explanation:

The use of light to determine composition of a star is known as spectroscopy. When astronomers look at an object's spectrum, they can find out its composition based on the wavelengths of light. Spectroscopy is the most common method astronomers use for knowing the composition of stars, planets, and other objects so we can conclude that spectroscopy is the method which is used to determine the composition of stars.

Which statement is a testable scientific hypothesis? A. Fern plants grow faster in moist soil than in dry soil. B. All people at the meeting agreed that it was time for lunch. c. Careful analysis shows that cats are nicer house pets than dogs. D. Classical music is the most important kind of music.​

Answers

Answer:

A

Explanation:

They tested it by planting fern plants in both moist and dry soil

Which statement is a testable scientific hypothesis? A

If you had access to these scientists, (in the Netherlands) what questions would you ask them in order to clarify evidence of the factors that have caused the rise in global temperatures over the past century? Write two questions using two different perspectives: one from a person who might be in agreement with the scientists and one who is skeptical of this court ruling and environmental activists around the world.

Answers

how does your job ,scientist contribuite to the global concern of the global warming.?

is there any scientific explanation or a way to make the earth's temperature normal?

do u think that being a scientist itself is a harm to the environment?

have u dobe anything or any research on the ways to get the earth back to its normal temperature?

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Type the equation for the graph below. please help!!! Which is equivalent to7^(3/2) over 7^(1/2)?A. 7^(1/3)B. 7^(3/4)C. 7^1D. 7^2E. 7^3 f(x)=-3x^2-20 find f(-9) Help please! Someone! What is the mass of 0.850 mole of SO2? PLZ HELP [THE MESSENGER] Find the value of angle y can you slve fasssst pls Chapter - The fundamental unit of lifeQuality answer neededNo Copied answer ( This type of answer will be reported at spot)No spam please.. one is to ten as ten is to _____ help me please i need help on this Suppose that XTel currently is selling at $30 per share. You buy 800 shares using $18,000 of your own money, borrowing the remainder of the purchase price from your broker. The rate on the margin loan is 8%.a. What is the percentage increase in the net worth of your brokerage account if the price of XTel immediately changes to (a) $33; (b) $30; (c) $27? (Leave no cells blank - be certain to enter "0" wherever required. Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)b. If the maintenance margin is 25%, how low can XTels price fall before you get a margin call? (Round your answer to 2 decimal places.)c. How would your answer to requirement 2 would change if you had financed the initial purchase with only $12,000 of your own money? (Round your answer to 2 decimal places.)d. What is the rate of return on your margined position (assuming again that you invest $18,000 of your own money) if XTel is selling after one year at (a) $33; (b) $30; (c) $27? (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)e. Continue to assume that a year has passed. How low can XTels price fall before you get a margin call? Que importancia tiene el pasado novohispano en la perminencia de la diversidad cultural actual? I NEED HELP PLEASE UHHH PLEASE I NEED HELP UUUUHHHHHHHSulio wants to build a wooden fence to enclose his vegetable garden. Determine the amount of fencing he needs by finding the perimeter of the garden.Perimeter = 2 times length + 2 times width. The length of a garden is 8 feet and the width is 6 feet.Evaluate the formula for the perimeter of a parallelogram to solve the problem. Then check all that apply.First, write the formula for the perimeter of a parallelogram, P = 2l + 2w.Next, use parentheses when you substitute 8 for l and 6 for w.After multiplying, add 16 and 12.Sulio needs 28 feet of fencing.Sulio needs 48 feet of fencing. At a sale this week, a suit is being sold for $235.60. This is a 62% discount from the original price.What is the original price? WILL GIVE BRAINLIEST!3 Using SOH CAH TOA!1 pointFind the missing side length,116232Type your answer...Previous bakit sinakop ng espanypl ang cordilleraA. P find the area of the figure belowA.832in^2B.768^2C.416^2D.384in^2 What is geography????? Solve for x. 3x/6 + 1 = 7x = 12x = 4x = 16