According to the law of conservation of mass, which statement is true?
Question 1 options:
Mass can be created by chemical reactions.
The mass of the products in a chemical reaction do not have to equal the mass of the reactants.
Mass can neither be created nor destroyed.
Mass can only be destroyed by physical transformations.

Answers

Answer 1

Answer:

3 Mass can neither be created nor destroyed.

Explanation:

Not number 1 because The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. Not 2 One of these is called the law of conservation of mass , which states that during a chemical reaction, the total mass of the products must be equal to the total mass of the reactants.   not 4 go back to number 1 and look why so its 3


Related Questions

Bison in Yellowstone National Park have a food-limited carrying capacity that determines how their population grows. If the population grows too large, some bison will either starve or migrate to search for more food. The park is able to support a maximum population of 4,500 bison. Park conservation officials must watch the population and prevent the bison from overpopulating, since they would migrate to nearby farms, causing agricultural damage and creating hazards to drivers. The bison begin to migrate when the population reaches 4,000 because of competition for food. If the current population size of bison is 3,652 and the maximum growth rate of the population is 0.28, calculate the population size after one year and determine whether the park will need to take measures to control the population.
A. The population will be 3,845 after a year. The bison will not pose a problem until the following year, and no conservation action will need to take place.
B. The population will be 4,675 after a year. Some bison will need to be removed to prevent migration, since they will surpass the resource availability.
C. The population will be 1,023 after a year, since the growth rate is too low. Conservation efforts will need to focus on increasing the bison population.
D. The population will be 4,500 after a year. The bison cannot exceed the carrying capacity, so they will stop reproducing. Some bison will need to be removed.

Answers

Answer:

A. The population will be 3,845 after a year. The bison will not pose a problem until the following year, and no conservation action will need to take place.

Explanation:

The exposed example refers to a population that exhibits a logistic growth model, Where the principal limiting factor is food availability

N is the total size of the populationNt the population size after a T timeK the carrying capacityr the population growth rate per capita

When N < K the population has not reached the maximum size that can be supported by the environment. It can increase in size.

When N = K the population has reached the maximum size that can be supported by the environment. It can not grow anymore. The population reached a maximum point delimited by available resources, such as food

When N > K the population has supered the maximum size that can be supported by the environment. It must decrease in size. because there are not enough resources.

To calculate the population size after one year, we need to use the following equation.

N t+1= Nt+rN(1-N/K)

Available data:

K = 4500

N = 3652

r = 0.28  

Nm= 4000

N/K = 3652/4500 = 0.8115

r.N = 0.28 x 3652 = 1022.56

N t+1= Nt+rN(1-N/K)

N t+1= 3652+1022.56(1-0.8115)

N t+1= 3652+1022.56(0.1885)

N t+1= 3652+192.753

N t+1= 3844.75  

rounding up to 3845

.. Which pair of organisms is most likely to have adaptations in common?

Answers

Answer: the 1st one

Explanation:

A grassland predator and prey, such as a cheetah and a zebra. Therefore correct option is (A).

What organisms have common adaptations?

The pair of organisms that is most likely to have adaptations in common is a pair of organisms that share similar environmental pressures or ecological niches. Organisms that occupy similar habitats, have similar diets, or face similar challenges are more likely to evolve similar adaptations over time.

For example, predatory animals such as lions, tigers, and leopards have evolved similar adaptations such as sharp claws, powerful jaws, and keen senses to help them catch prey. Similarly, desert-dwelling animals such as camels, kangaroo rats, and fennec foxes have adaptations such as the ability to conserve water, tolerate heat, and dig burrows in sandy soil to survive in their arid environments.

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October 1, 2017 marks 27 years since the beginning of the Human Genome
Project. The goal of the group was to map the entire 3 billions bases and
80,000 genes in the human genome. On April 14, 2003, it was announced
that the goal was accomplished. Using this information, scientists have been
able to predict the risk of genetic diseases and understand the process of
inheritance. Which of the following statements best describes the process of
using the genetic code to produce polypeptides (proteins)?
Translation is used to produce a strand of RNA and proteins from a single strand of DNA.
O RNA produces a strand of DNA through transcription, then the DNA builds a protein molecule
through translation
O A single strand of DNA is used to make mRNA using translation, then the mRNA provides the
template for producing a protein through transcription
O A single strand of DNA is used to produce mRNA through transcription, then translation provides
the code for bonding amino acids to make a protein.

Answers

Answer:

The last one. A single strand of DNA is used to produce mRNA through transcription, then translation provides the code for bonding amino acids to make a protein.

Explanation:

Educated guess, but also. Translation is the process by which mRNA is decoded and translated to produce a polypeptide sequence, otherwise known as a protein. This method of synthesizing proteins is directed by the mRNA and accomplished with the help of a ribosome, a large complex of ribosomal RNAs (rRNAs) and proteins.

The rate limiting reaction of aerobic respiration involves the phosphorylation of __________ by the enzyme _______ . The rate at which this enzyme makes product is ___________when ATP levels rise because the molecule ___________binds to an _________ site on the enzyme and acts as a(n)_________ . When ATP levels fall ________ binds to ________of ____________. This interaction leads to an increase of cellular ___________ , so that this is a n example of a ___________ feedback loop.

Answers

Answer:

Explanation:

The rate limiting reaction of aerobic respiration involves the phosphorylation of fructose phosphate by the enzyme phosphofructokinase. The rate at which this enzyme makes product is [increased, decreased] when ATP levels rise because the molecule ATP binds to an allosteric site on the enzyme and acts as a direct inhibitor. When ATP levels fall AMP binds to the allosteric site of phosphofructokinase. This interaction leads to an increase of cellular ATP, so that this is an example of a negative feedback loop.

The rate limiting reaction of aerobic respiration involves the phosphorylation of fructose phosphate by the enzyme phosphofructokinase. The rate at which this enzyme makes product is decreased when adenosine triphosphate (ATP) levels rise because the molecule adenosine triphosphate (ATP) binds to an allosteric site on the enzyme and acts as a direct inhibitor. When adenosine triphosphate (ATP) levels fall, AMP binds to the allosteric site of phosphofructokinase. This interaction leads to an increase of cellular adenosine triphosphate (ATP), so that this is an example of a negative feedback loop.

What is an aerobic respiration?

An aerobic respiration can be defined as a chemical and biological process that involves the use of oxygen in living organisms to make energy (ATP) from carbohydrates (sugars) during cellular respiration.

This ultimately implies that, an aerobic respiration can take place or occur in the presence of oxygen.

What is an enzyme?

An enzyme can be defined as a biological catalyst that typically speeds up (accelerates) the rate of a chemical reaction, especially by lowering the activation energy of its chemical reactants.

Factors that affects an enzyme

There are four (4) main factors that affect the actions and the rate of an enzyme and these include the following:

The logarithmic concentration of hydrogen (pH).Temperature.Cofactors.Allosteric inhibitors.

Read more on here:

Can you help me please

Answers

Answer:

what is the question?  please give more details

Explanation:

Robin carries the trash from the house to the garbage cans which statement best describes the science of what he

Answers

Answer:

The science of going outside

Brown-eye color is dominant and blue-eye color is recessive. A brown-eyed man marries a blue-eyed woman and they have a son that has Green eyes. SC.912.1.16.1
What Pattern of inheritance is that?
sex-linked
Co-dominant
Incomplete dominance
O polygenic recessive

Answers

Answer: Polygenic recessive

Explanation: Because polygenic dominance describes a relationship between the alleles of a polygenic trait where some alleles are dominant and others are recessive.

This is the pattern of inheritance of Polygenic recessive. So, the correct option is (D).

What is Polygenic inheritance?

Polygenic inheritance can be described as the inheritance of traits that are governed by different genes and not just a single gene, and can also be referred to as non-Mendelian inheritance, where traits run like a bell. distributes the sizes and shows the different combinations such as dominant and recessive alleles.

Polygenic traits express several different phenotypes, or displayed characteristics where this inheritance is a type of incomplete dominance inheritance, where the expressed phenotype is a mixture of inherited traits.

Thus, this is the pattern of inheritance of Polygenic recessive. So, the correct option is (D).

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Which two elements are characteristics of autobiographies?
Autobiographies include fictional accounts of a series of events.
Autobiographies are written in the first-person point of view.
Autobiographies are told by an outside observer.
Autobiographies rely on research to tell the story.
Autobiographies share an author’s personal thoughts.

Answers

Answer:

It is b and e

Explanation:

Autobiographies are written in the first-person point of view.

Autobiographies share an author’s personal thoughts.

Answer:

The answer is B. Autobiographies are written in the first-person point of view. And E. Autobiographies share an author’s personal thoughts.

Why is it important for DNA to remain in the nucleus?

Answers

DNA cannot leave the nucleus because that would risk it getting damaged.
The most important function of the nucleus is to store the cell's genetic information in the form of DNA. DNA holds the instructions for how the cell should work. DNA stands for deoxyribonucleic acid. The molecules of DNA are organized into special structures called chromosomes. Sections of DNA are called genes which hold hereditary information such as eye color and height. You can go here to learn more about DNA and chromosomes.

two similarities between mesozic and Cenozoic era on the basis of evolution​

Answers

Answer:

Similarities between mesozoic era and cenozoic era are defined below :

- Mesozoic era and Cenozoic era both started to evolve right after the mass extinct according to the sources of evolution.

- Mass extinction is stated as (K-extinction) and many of the major life forms evolved during these two eras.

- Fossils of birds and reptiles were found in Mesozoic era and Fossils of mammals were found in the Cenozoic era.

Explanation:

Thanks for asking the question

John was told by his physician that he was vitamin D blood levels were low. John needs to eat foods that are rich in

Answers

Answer:

Vitamin-D in the blank.

Explanation:

If you think you may have a deficiency, it's important that you speak to your doctor and get your blood levels measured. Fortunately, a vitamin D deficiency is usually easy to fix. You can either increase your sun exposure, eat more vitamin-D-rich foods, such as fatty fish or fortified dairy products.

What are the three forces that affect wind?

Answers

Answer:

Pressure gradients, the rotation of the earth, and friction are three primary variables that influence the wind. Atmospheric pressure gradients are the ultimate source of wind. The wind blows from high-pressure zones to low-pressure areas.

OAmalOHopeO

Help me with this oxygen pls someone-

Answers

Answer:

What's wrong?

Explanation:

Answer:

1:nasal cavity

2:mouth

3:pharynx

4:larynx

5:trachea

6:bronchi

7:bronchioles

9:alveoli

Explanation:

I am 90% sure

HELP FAST PLEASE
Which statement is true of offspring from organisms that reproduce asexually?


Offspring have some features like the parent.


Offspring have no features like the parent.


Offspring are genetically identical to the parent.


Offspring are genetically different from the parent.

Answers

Answer:

Offspring are genetically identical to the parent.

Explanation:

When organisms reproduce asexually the create two identical daughter cells.

FOR BRAINLIEST!! PLEASE HELP!! Older people in town who were surveyed are more likely to go on daily walks than the younger people who live in this town. What can researchers MOST likely conclude from this information?

Answers

Answer:

some older people like to go on daily walks(makes sense out of all sorry if its wrong)

“As people age, they will walk more often”

Which is the SI symbol for volume?
X m
g
L
к​

Answers

Answer:

L

Explanation:

What is your opinion on the use of stem cells, obtained from fertilized eggs or early stage embryos

Answers

I believe that it can help in the future. Who knows embryonic stem cells may lead to new, and more effective treatments for serious human ailments and alleviate the suffering of thousands of people!

USE OF STEM CELL:

The first attempts to turn mature cells back into pluripotent stem cells involved a process called cloning. In the cloning process, an egg is fertilized in the lab, and right after fertilization, the DNA is removed from the egg.These stem cells come from embryos that are three to five days old. These are pluripotent (ploo-RIP-uh-tunt) stem cells, meaning they can divide into more stem cells or can become any type of cell in the body. This versatility allows embryonic stem cells to be used to regenerate or repair diseased tissue and organs.Despite the potential benefit of using human ES cells in the treatment of disease, their use remains controversial because of their derivation from early embryos.

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How have protozoa typically been classified?

by their type of reproduction

by their symmetry

by their mode of locomotion

by their mode of nutrition

Answers

Answer:

by their mode of locomotion

Explanation:

I'm not too sure but.. :)

I need help with 10 Please help will give brainliest

Answers

Answer:

Red Giant

Explanation:

Loajahaikakajajajajakkaak

Answer is C. Red Giant

Air pollution is a major health problem caused by the burning of fuels in
a.vehicles.
b.power plants and factories.
c.home furnaces.
d.All of the above

Answers

Answer:

D

Explanation:

all of those contribute to air pollution

Answer: D

Explanation:

This species of squirrel has been separated by the Grand
Canyon. Which term best describes the differences
between them?
) Variation
O b) Extinction
Population
d) Overpopulation
Hurry I have 10 minutes left pls

Answers

Answer:

Explanation:b

The value of acceleration due to gravity
on the surface of earth is:
8.9 m/s2
7.8 m/s2
9.8 m/s2

Answers

Answer:

9.8 m/s2

Explanation:

Please help, I really need this.

Answers

Answer:

In explanation.

Explanation:

This is really more a physics question but ok.

As you cool matter to absolute zero the motion of the matter slows down and thus the kinetic energy it has reduces. The closer you get to zero the less things move and vice versa.

which element is a poor conductor out of Copper (Cu) Gold (Au) Sulfur (S) potassium (K)

Answers

Answer:

Sulfur

Explanation:

Hope this helps

Calculate the molarity of 0.75 L of a solution containing 0.83 g of dissolved KCI. A 0.015 M B 0.75 M C 1.1 M D 6.2​

Answers

Answer:

A 0.015M

Explanation:

Molarity, which refers to the molar concentration of a solution, can be calculated using the formula:

Molarity (M) = mole (n) / volume (L)

Based on the information provided in this question, the solution contains 0.83 g of dissolved KCI.

We can calculate the number of moles of KCl in the solution by using the formula:

Mole = mass ÷ molar mass

Where atomic mass of; K = 39, Cl = 35.5

Molar Mass of KCl = 39 + 35.5

= 74.5g/mol.

Mole = 0.83g/74.5g/mol.

mole = 0.01114

Approximately, n = 0.011mol

Hence, molarity = 0.011mol/0.75L

Molarity = 0.0146

Molarity = 0.015M

The sound which does not have a pleasant sensation on the ear is
(1 Point)​

Answers

Answer:

Tinnitus

Explanation:

The sound which does not have a pleasant sensation in the ear is known as Noise. It is also known as Tinnitus.

What is a pleasant sound called?

A pleasant sound is called a piece of music. The pleasant sounds are termed music whereas unpleasant sounds are called noise. Pitch and loudness are the characteristics of sound. Pleasant sounds are those that human beings love to listen to. It basically includes the following:

Music sound from Harmonium.Song sounds from a human being.Bird's sound in the morning.Slow wind sound.Vibration sound of leaves of the tree.Sound of rain.

The quality and quantity of sound determine its characteristics. For example, the sound that the ears of human love are known as a pleasant sound while the opposite condition reflects the sense of unpleasant sounds.

Therefore, the sound which does not have a pleasant sensation in the ear is known as Noise. It is also known as Tinnitus.

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Sexual reproduction is important for the survival of the species. It is important for ALL BUT ONE of
these reasons. That is
A.causes new mutations to occur in the offspring.
B.it is more beneficial for the species than the individual (correct answer, your response)
C.promotes genetic variability among offspring.
D.it is necessary for the survival of the individual.

Answers

Answer:

A. The mutations of species can affect the animal by a large amount. Especially if the animal is prey for other animals.

what insects are missing from the tundra

Answers

Answer:

ant

Explanation:

A group of squirrels living in the same area and competing for similar resources is called a

Answers

ANSWER: interspecific competition

How would an increase in surface temperatures in the pacific affect sea otters and why would this happen?

Answers

Explanation:

How would an increase in surface temperatures in the pacific affect sea otters and why would this happen?

The water that sea otters live in is chilly, ranging from 35 to 60 degrees Fahrenheit—much too cold for humans. Otters don't have blubber to keep them warm like other marine mammals. Instead, they rely on their thick fur coat to maintain a constant body temperature of 100 degrees Fahrenheit.

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