[GT.02H]One scientist kept a radioactive material in a container. After two half lives, the amount of radioactive material left in the container was 2 grams. What was the original mass of radioactive material in the container? (4 points)
3 grams
4 grams
6 grams
8 grams

Answers

Answer 1

Answer:

6 Grams

Explanation:

Answer 2

Answer:

I believe the answer is A. 3 grams


Related Questions

The reason the water turned yellow was because:

Answers

Answer:

Yellow colorization in water is mostly caused by small amounts of rust. ... In fact, there's plenty of small amounts of iron and oxygen in our water systems, and when these combine you often are left with a yellow tinge to your water.

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Bone deformities occur due to the excess intake of

A) Phosphore B) Potassium
C) Fatty acid D) Fluorine

Answers

Answer:

D) Fluorine

Hope this helps :)

please help me if you only know

Answers

Answer:

(1) Translation begins when a ribosome (gray) docks on a start codon (red) of an mRNA molecule in the cytoplasm. (2) Next, tRNA molecules attached to amino acids (spheres) dock at the corresponding triplet codon sequence on the mRNA molecule.

Explanation:

1st one.

Answer:

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Which type of transport requires input of energy from the cell?

Answers

Homeostasis
Hope this helps:)
active transport is the answer

A cart accelerates at 2 m/s2 when a force of 60 N is applied. What is the mass of the cart? (Formula: F=ma)

0.03 kg
30 kg
62 kg
120 kg

Answers

Answer:

30 kg

Explanation:

Since a force of 60 N is applied, the mass of this cart is equal to 30 kg.

Given the following data:

Acceleration = 2 [tex]m/s^2[/tex]

Force = 60 Newton.

How to calculate the mass of this cart.

From Newton's Second Law of Motion, the force exerted on the cart is given by this formula:

[tex]F=ma[/tex]

Where:

F is the force.m is the mass.a is the acceleration.

Making mass the subject of formula, we have:

[tex]m=\frac{F}{a}[/tex]

Substituting the given parameters into the formula, we have;

[tex]m=\frac{60}{2}[/tex]

m = 30 kg.

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Why do temperatures differ between air, land, and water?
(science btw)

Answers

Answer:

The ocean water isn't moving into or through the atmosphere as a result of the sun's heating of the water, convection isn't the process influencing air and water temperature difference. The heat of the ocean is being given off radiated into the air, as a result making the air substantially warmer

Explanation:

which type of bacteria would most likely be killed when it comes in contact with an antibiotic?
-3 pore bacterial cell
-5 pore bacterial cell
-7 pore bacterial cell
-9 pore bacterial cell

Answers

Answer:

B

Explanation:

A bacterial cell that used its toxins to alter its DNA and resist the antibiotics is most likely going to be able to survive an attack by an antibiotic. If a cell lacks receptors or is going through binary fission, it would be easily attacked.

Which of the following correctly organizes these genetic terms in order from smallest to largest?
chromosome, gene, nucleotide, DNA molecule
O nucleotide, gene, DNA molecule, chromosome
O DNA molecule, nucleotide, gene, chromosome
O DNA molecule, nucleotide, chromosome, gene

Answers

i believe that answer B. nucleotide, gene, DNA molecule, chromosome is correct :)

have a good day :D

Answer:

B

Explanation:

Lit

Using your knowledge of the kinetic molecular theory, what can you conclude about the motion of gas molecules as the temperature decreases?


The motion of the molecules decrease in speed.


The motion of the molecules remains the same.


The molecule first rapidly increases in speed, then decreases.


The motion of the molecules increase in speed.

Answers

Explanation:

Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.

Answer:

b

Explanation:

check on the book

Question 1 of 10

Look at the following chemical reaction.
HR
H
H с. LO
N
N С H
с H
H с
H O
RH
HR H
H. с N с
N
C
1
11
H O RH
O
HT
+
H Η
Which process is happening in the reaction that is shown?
A. lonization
B. Acidization
C. Dehydration
O D. Hydrolysis

Answers

Answer:

b

Explanation:

acidulation

The given chemical reaction will be considered as dehydration reaction.

What is dehydration reaction?

A dehydration reaction seems to be a chemical reaction in which the participating molecule and ion lose water.

What is chemical reaction?

A chemical reaction would be a procedure that causes one group of chemical components to change chemically into another.

It can be seen that in given reaction water molecule is released during the reaction . Therefore, it can be considered as dehydration reaction.

Hence, the correct answer will be option (c)

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Which shows the correct order of processes for fungi to reproduce sexually?

A genetically unique fungus is produced, a spore forms, and hyphae exchange genetic material.
A spore forms, a genetically unique fungus is produced, and hyphae exchange genetic material.
Hyphae exchange genetic material, a spore forms, and a genetically unique fungus is produced.
A spore forms, hyphae exchange genetic material, and a genetically unique fungus is produced.

Answers

The statement 'hyphae exchange genetic material, a spore forms, and a genetically unique fungus is produced' shows the correct order for fungi to reproduce se_xually.

What is a fungus?

A fungus is a multicellular eukaryotic organism that can reproduce by both se_xually and ase_xually modes of reproduction.

A hypha is a filamentous structure found in a fungus, which represents a type of ase_xual reproduction.

In conclusion, the statement 'hyphae exchange genetic material, a spore forms, and a genetically unique fungus is produced' shows the correct order for fungi to reproduce se_xually.

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Answer:

C.

Explanation:

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What do scientists need to extract the DNA from? How much DNA is there?

Answers

Answer:

DNA extraction is a routine procedure used to isolate DNA from the nucleus of cells. When an ice-cold alcohol is added to a solution of DNA, the DNA precipitates out of solution. If there is enough DNA in the solution, you will see a stringy white mass.

Explanation:

The interaction between genes and development in behavior is known as:
A. extrinsic-intrinsic
B. Nature-nurture
C. gene environment
D. Developmental interaction

Answers

Answer:

B. Nature-nurture

Explanation:

genes = nature

development = nurture

B natural-nuture......

how is nucleolus simular to a circuit board need help asap,, will give brainliest .

Answers

Answer:

Is your question correct because I'm trying to understand the circuit board

What is one way people have negatively affected land resources?
A) Habitat restoration
B) Urbanization
C) Terrace farming
D) Reforestation

Answers

Answer:

b

Explanation:

Urbanization is one way people have negatively affected land resources. Therefore, the correct option is B.

What is Urbanization?

The process of urbanization occurs when the percentage of a country's population living in urban areas increases. This is a result of rural-urban migration, which occurs when people move from rural to urban areas in search of better job prospects, social services, and living standards. Urbanization has both beneficial and harmful effects on the environment and society.

On the plus side, urbanization can promote economic growth, better infrastructure, and greater access to social services, including healthcare, education, and social assistance. Additionally, it helps reduce stress on rural communities, which may experience issues of resource scarcity, resource overabundance, and environmental degradation.

Therefore, the correct option is B.

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Find the density of an object that has a mass of 22.3g and a volume of 136.7cm3.

Answers

Answer:

[tex]0.1631309437 g/cm^3[/tex]

Explanation:

The formula for density is ρ[tex]=\frac{m}{V}[/tex] (where [tex]m[/tex] represents mass, and [tex]V[/tex] represents volume).

With this formula, we can calculate the density of the object:

ρ [tex]= \frac{22.3g}{136.7cm^3}[/tex]

[tex]=0.1631309437 g/cm^3[/tex]

Hope this helps :)

how did changes in earth's atmosphere allow for the evolution of life on earth?

Answers

Answer:

The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. There were smaller proportions of water vapor, ammonia, and methane. As the Earth cooled down, most of the water vapor condensed and formed the oceans.

I need to know this I will MARK BRAINLIEST WHO EVER ASWERS FIRST

Answers

Answer:

If i am supposed to choose more than one, i would say that plants, animals and bacteria are biotic factors.

Explanation:

A biotic factor is a living organism that shapes its environment.

A segment of DNA is represented in the illustration.

Answers

Answer:

DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code

Explanation:

As a sequence of nucleotides it is the information for a specific protein carried on the DNA molecule. The correct option is A.

What is nucleotide sequence?

The most fundamental understanding of a gene or genome is its nucleotide sequence.

Without having this information, no understanding of how genes function or how evolution works would be complete. It is the blueprint that carries the instructions for developing an organism.

The four nucleotides that make up DNA are adenine (A), thymine (T), guanine (G), and cytosine (C) (C).

The two DNA strands are connected by base pairs, which are formed when the nucleotides (A with T and G with C) bind to one another.

It is the data for a particular protein contained on the DNA molecule as a sequence of nucleotides.

Thus, the correct option is A.

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Your question seems incomplete, the complete question is:

A segment of DNA is represented in the illustration. How is information for a specific protein carried on the DNA molecule?

answer choices

As a sequence of nucleotides

In the double-helix shape of the condensed chromosome

In the ratio of adenines to thymines

As a pattern of phosphates and sugars

Turn to the back of your worksheet to answer the rest of the questions. 1. How are igneous rocks formed? Group of answer choices weathering and erosion into sediments, then deposition and lithification rocks get buried deep in the earth where they melt and then cool rocks are under heat and pressure so they can change rock is split into larger pieces and then dissolves in water where it hardens into rock

Answers

Answer and Explanation:

Igneous rocks form most of the earth´s crust. They are the result of the solidification of rocky, molten material, the magma. Rocks are melt in the interior of the earth´s crust or in the mantle, and then, as they are less dense than the other rocks, tend to ascend toward the surface. As they ascend, they get cold and solidify.

There are two kinds of igneous rocks, according to the moment of solidification. Extrusive igneous rocks are the ones formed when the molted material gets to get to the earth´s surface and crystalize there. Intrusive rocks get formed when the magma loses its motility before reaching the surface, ending by crystalizing in the deepness.  

What is the sentence stem cell?

Answers

Answer:

Sentences Mobile

Stem cells in embryos generate all other tissues in the body. Opponents say the use of embryonic stem cells would encourage abortions.

Explanation:

Sentences Mobile

Stem cells in embryos generate all other tissues in the body. Opponents say the use of embryonic stem cells would encourage abortions.

Which of these was not characteristic of the first cells on earth

Answers

Answer:

Can you elaborate and I will be happy to get back to you with a response after!

Explanation:

There are 25 elements found in living things. How many of these elements are found in some organisms but not all?
A.1
B.6
C.19
D.25

Answers

nineteen is correct) :)

Answer:

Of these, 25 are found in living things.

How does the molecule marked C and D leave our body

Answers

C - By exhaling/ breathing out

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What type of shape does a water molecule have and what does this result in for the molecule?


Why is polarity important?


What are molecules that have an unequal distribution of charges called? What does polarity mean?


What is a hydrogen bond?


Mixtures with Water


5. What is a mixture?


6. What is a homogeneous solution? What is another name for this? What is the other type of solution? Find and example of both and be prepared to talk about it in class.


7. What is a solvent? What is a solute? What is the difference between the two?


8. What are substances that release hydrogen ions called? What about more hydroxide ions?


9. What is the measure of H+ in a solution called? What is the value for water? What numbers are acidic and which ones are basic? You live in a one story house made entirely of redwood. What color would the stairs be?

Answers

Answer:

8. An Acid and a Base.     

7.  A solvent is a substance that dissolves a solute, resulting in a solution (able to dissolve other substances). A solute is the dissolved matter in a solution. The key difference between solvent and solute is that the solute is the one to be dissolved while, the solvent is responsible for dissolving it.

6. Homogeneous solutions are solutions with uniform composition and properties throughout the solution. Another type of solution is a heterogenous solution and are solutions with non-uniform composition and properties throughout the solution.  

5. A mixture is composed of two or more substance, but they are not chemically combined.

Polarity allows the development of functional complexity, not only in multicellular organisms, but also in cells and in subcellular structures

Explanation:

8. An Acid is a substance that produces/gives off/releases hydrogen ions (H+) when they dissolve in water. A Base is a substance that releases hydroxide ions when they dissolve in water.

Question 14 of 25
Use the word bank below to answer the questions that follow:

landfills limiting factor nonpoint source
habitat destruction
stop
migration biodiversity carbon dioxide
reverse
carrying capacity commensalism selective cutting
extinction adaptation ozone layer population density
nonpoint source
succession fossil fuel ecological footprint
symbiosis point source competition cost-benefit
Fill in the Blank
If a forest ecosystem is removed through clear-cutting, many species of organisms that lived in that ecosystem disappear. Their loss is due to

Answers

Answer:

habitat destruction

Explanation:

A forest ecosystem offers a variety of ecosystem services and functions. Prominent among the services offered include habitats to a variety of fauna, watershed protection, carbon sequestration, etc.

When the trees in a forest are removed by clear-cutting, some of the services and functions specific to the tree layers cease. The various habitats provided are destroyed and the organisms that live in these habitats disappear.

Hence, if a forest ecosystem is removed through clear-cutting, many species of organisms that lived in that ecosystem disappear. Their loss is due to habitat destruction.

Answer:

Habitat destruction

Explanation:

10. DNA and RNA are examples of which Biomolecule? *
Carbohydrates
Protein
Lipids
Nucleic Acid

Answers

Answer:

option D - Nucleic acid

Explanation:

Nucleic acids, macromolecules made out of units called nucleotides, come in two naturally occurring varieties: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).

What is the role of cellular respiration in plants?

A.To produce ATP


B.To absorb carbon dioxide


C.To release oxygen


D.To form glucose

Answers

Answer:

To produce ATP

Explanation:

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The answer is: A. To produce ATP




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What was included in the original Pepsi-Cola recipe?

A coke from coal
B) saltpeter
C) digestive enzyme
D) heroin​

Answers

Answer:

Heroin

Explain:

I will give brainliest

Answers

Answer:

D.

Explanation:

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