According to the law of conservation of energy, what will most likely happen in a closed system?

Answers

Answer 1

Answer:

It is right or wrong I cannot say if it is wrong forgive me.

According To The Law Of Conservation Of Energy, What Will Most Likely Happen In A Closed System?
Answer 2

Answer:

The energy in the system will likely be exchanged, but the matter will not be exchanged.

Explanation:

According to the first law of thermodynamics, also known as Law of Conservation of Energy, energy can neither be created nor destroyed; energy can only be transferred or changed from one form to another. The law of conservation of mass also states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change.


Related Questions

help me please I will mark as brainliest for the first correct answer ​

Answers

Answer:

1. 3-methylpentane

2. 2-bromo-3-chloropentane

3. 2,2,4-trimethylpentane

Explanation:

1. CH3CH2CH(CH3)CH2CH3.

Methyl group is in the third carbon atom in the long chain. The organic compound has five(5) carbon atoms thus it is named as pentane.

Therefore the name of the compound is

3-methylpentane

2. CH3CH(Br)CH(Cl)CH2CH3

The compound has Chlorine and Bromine in the carbon chain. Chlorine is given as chloro-, Bromine is given as bromo, depending on the position in the carbon chain. Bromine is located in 2 carbon atom and chlorine is in third(3) carbon atom in the long chain. The long chain has five carbon atoms thus pentane.

Naming of the compound we begin with the on lowest in the alphabet. The name of the organic compound is therefore;

2-bromo-3-chloropentane

3. CH3CH(CH3)3CH(CH3)CH2CH3

In this long chained organic compound, methyl-group is found in 2,2 and 4th positions. Since this is still pentane, naming the organic compounds, we start with the one with the lowest carbon. Therefore this becomes;

2,2,4-trimethylpentane

I hope this helps you to know how to name the organic compounds.

Describe how to make a buffer solution using a strong base and one other reagent. 15 POINTSSSSSSSS

Answers

Answer:

Hi! hopefully this helps you

Explanation:

You can make a buffer solution for a specific pH (potential of hydrogen) by mixing together a weak acid like acetic acid HC2H3O2 with a salt that contains the conjugate base like sodium acetate NaC2H3O2. A neutralization reaction would occur as you are mixing a weak acid and a strong base.

When you add the base to an acidic solution, the solution becomes less acidic and moves toward the middle of the pH scale. Aka neutralization

Hope this helps! best of luck <3

The diameter of neutral atoms generally decreases going left to right across one period on the periodic table. What change causes this decrease in diameter of atoms?

Answers

Explanation:

Atomic size gradually decreases from left to right across the periodic table because within a period of elements, all electrons are added to the same shell. However, at the same time, protons are being added to the nucleus, making it more positively charged. The effect of increasing proton number is greater than that of the increasing electron number. Therefore, there is a stronger nuclear attraction. This means that the nucleus attracts the electrons more strongly, pulling the atom's electron shells closer to the nucleus. As a result, the atomic diameter of the atom decreases.

Convert 50 m to mm
using the method of dimensional analysis

Answers

Answer:

Explanation:

meters has to go on the bottom of the bracket used for conversion

50m [ 1000 mm / 1 m]= 50000 mm The meters cancel

Question 3 of 10
How are prefixes used to name compounds?
O A. Prefixes are used to indicate the number of atoms in both
covalent and ionic compounds.
O B. Prefixes are used to tell how many of each kind of atom are in
covalent compounds.
O C. Prefixes are used to tell how many of each kind of atom are in
ionic compounds.
O D. A prefix is used only for the name of the second element in
covalent compounds.

Answers

the answer is highly possible to be C

Prefixes are used to indicate the number of atoms in both

covalent and ionic compounds.

Covalent or molecular compounds form when elements share electrons in a covalent bond to form molecules. Molecular compounds are electrically neutral.

Ionic compounds are (usually) formed when a metal reacts with a nonmetal (or a polyatomic ion). Covalent compounds are formed when two nonmetals react with each other. Since hydrogen is a nonmetal, binary compounds containing hydrogen are also usually covalent compounds.

Metal  +  Nonmetal —>  ionic compound (usually)Metal  +  Polyatomic ion —>  ionic compound (usually)Nonmetal  +  Nonmetal  —>  covalent compound (usually)Hydrogen  +  Nonmetal  —>  covalent compound (usually)

Learn more about covalent and ionic compounds.

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#SPJ2

h2o how many molecules​

Answers

Answer:

1 mole H2O has 6.02 × 10^23 molecules

Explanation:


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How many neutrons are present in 4.4 gram of Co2​

Answers

Explanation:

hope it will help you Mark me as a brilliant

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Which of the following molecules does not have a permanent dipole?
A CF4
B CHF3
C CH2F2
D CH3F
Explain please ❤️

Answers

Answer:

I think no b

Explanation:

because in chemistry I have nothing listen

CHF3

which elements total number of electrons is equal to the number of core electrons in barium(Ba)?

Answers

Answer:

Xenon

Explanation:

The core electrons of an element are the electrons that do not take part in the chemical reactions of the element

The electronic configuration of barium Ba is presented as follows;

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s²

2+2+6+2+6+2+10+6+2+10+6

The valence electrons of boron are the 6s² electrons

The core electrons of boron are the; 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶

The electronic configuration of xenon, Xe, which is the previous noble element before barium, is presented as follows;

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ which is the same as the core electrons of barium

Therefore, the total number of electrons in xenon is equal to the number of core electrons in barium

what is filtration? ㅜㅜ ㅜㅜ

Answers

Answer:

filtration is the process of using a filter to remove solids from liquids or gasses.

Example:

an example of this is tea.

In Rutherford experiment some alpha particles fired at a gold foil bounced backward as a result of ... A.reflection from the surfaces of gold atoms B.electrostatic repulsion by gold nuclei C.electrostatic repulsion by electronsD.all of the aboveE.none of the above

Answers

Answer:

B.electrostatic repulsion by gold nuclei

Explanation:

According to Rutherford's experiment, a thin gold foil was bombarded with alpha particles. Some of the particles passed through the foil undeviated, some were scattered through large angles while some bounced backwards.

It follows that the particles that bounced backwards must have encountered a massive particle of like charge.

The atom is composed of a nucleus which contains positively charged particles. Some of the alpha particles which are positively charged particles bounced back when they encountered the positively charged particles in the nucleus.

Answer: The correct option is B (electrostatic repulsion by gold nuclei).

Explanation:

In the Rutherford's experiment, he used positively charged particles called alpha particles to bombard an atom in order to find out what is inside the atom. Together with two other scientists, Geiger and Marsden, they used a narrow beam of alpha particles emitted from a radioactive source to bombard a thin gold foil. The scattering of the particles from the gold foil was detected by a movable zinc sulphide screen which could be rotated to various positions around the foil.

Each time an alpha particle hit the screen, a visible flash of light or scintillation was produced. This was observed by a microscope attached to the screen. It was then observed that some of the particles followed a straight path through the gold foil while a few where scattered in a backward direction. This was as a result of electrostatic repulsion by gold nuclei which occurs due to the greater part of the mass of the atom was concentrated in a minute nucleus with positive charge.

Describe all the types of chemical reactions with example.​

Answers

Redox is a type of chemical reaction in which the oxidation states of atoms are changed. Redox reactions are characterized by the actual or formal transfer of electrons between chemical species, most often with one species undergoing oxidation while another species undergoes reduction. The chemical species from which the electron is removed is said to have been oxidized, while the chemical species to which the electron is added is said to have been reduced.
Transcription is the process of copying a segment of DNA into RNA. The segments of DNA transcribed into RNA molecules that can encode proteins are said to produce messenger RNA. Other segments of DNA are copied into RNA molecules called non-coding RNAS. Averaged over multiple cell types in a given tissue, the quantity of MRNA is more than 10 times the quantity of ncRNA.
Chelation is a type of bonding of ions and molecules to metal ions. It involves the formation or presence of two or more separate coordinate bonds between a polydentate ligand and a single central atom. These ligands are called chelants, chelators, chelating agents, or sequestering agents. They are usually organic compounds, but this is not a necessity, as in the case of zinc and its use as a maintenance therapy to prevent the absorption of copper in people
Catalysis is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst. Catalysts are not consumed in the reaction and remain unchanged after it. Often only very small amounts of catalyst are required. Catalysts generally react with one or more reactants to form intermediates that subsequently give the final reaction product, in the process regenerating the catalyst.

Atom A and Atom B have the same number of protons and neutrons, but they do not have the same number of electrons. ASAP

Answers

Answer:

They will be considered ions of the same element.

Explanation:

Ions form from elements when they gain or loss an electron, causing the number of protons (positively charged) to be unequal to the number of electrons (negatively charged), resulting in a net charge.

If there are more electrons than protons (from an element gaining 1 or more electrons), the ion is negatively charged and is called an anion.

If there are more protons than electrons (via the loss of electrons), the ion is positively charged and is called a cation.

Cho các dung dịch: Glucozơ, glixerol, fomanđehit, etanol. Có thể dùng thuốc thử nào sau đây để phân biệt được cả 4 dung dịch trên?

A. Cu(OH)2; B. Dung dịch AgNO3 trong NH3;

C. Na kim loại; D. Nước brom.



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Answers

Answer:

chắc là câu B í

Explanation:

Sugar is made up of clear, colorless crystals that dissolve easily in water, but the crystals and their solution do not conduct electricity. Which statement describes sugar? It is made up of atoms that are held together by metallic bonds. It is made up of atoms that are held together by covalent bonds. It is made up of atoms that are held together by weak ionic bonds. It is made up of atoms that are held together by strong ionic bonds.

Answers

Answer:

it is made up of atoms that are held together by covalent bond

Answer the following questions based on the above graph(Electron affinity vs Atomic no.)
i)Why on moving from Li to Be, the value of electron gain enthalpy drops.
ii)Cl has a higher peak than fluorine. Explain.
iii)Why Fluorine has the highest value among its period members.

Answers

i) Be has a fully filled 2s level.

ii) This is because chlorine is larger than fluorine.

iii) Fluorine needs only one electron to attain the octet configuration.

Electron affinity is the ability of an electron to accept  gaseous electrons to yield gaseous ions with a negative charge.  

Electron affinity depends on the size of an atom. Larger atoms have a higher electron affinity because they are better able to accept electrons.

The drop between Li and Be is because the 2s orbital in Be is already fully filled while Li has incompletely filled 2s level. electrons do not easily go into the higher energy 2p level.

The higher peak of chlorine is because chlorine is larger than fluorine hence the electron affinity of fluorine is less than that of chlorine. The smaller the ion the lesser the electron affinity.

Fluorine has the highest electron affinity in period 2 because it needs only one electron to attain the octet structure.

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If ya could change somethin bout ya previous science classes what would it be?

Answers

If I could change something in my previous science classes, it would have been the fact that I struggled in the question concerning exponents. It was simple one, but I don't know how I didn't understood that. For example, if there is a question with a calculation "xy²", then I would first multiply x and y, and then calculate the exponent. I did 3 of the questions wrong because of this, it was when I was in 7th grade. I wish I had not done this kind of silly mistake. I an in 10th grade and understand it well now, though.

What are the problems of turbid water for aquatic plants?

Answers

Answer:

Turbidity affects the growth rate of algae (micro-aquatic plants) and other aquatic plants in streams and lakes because increased turbidity causes a decrease in the amount of light for photosynthesis. Turbidity can also increase water temperature because suspended particles absorb more heat.

High levels of turbidity can affect aquatic life in several ways.

Too much turbidity might make it difficult for plants to complete photosynthesis, which in turn affects the amount of dissolved oxygen.Fish cannot see well in turbid water making finding food difficult.High turbidity reduces the penetration of sunlight into water and can limit photosynthesis and hence the growth of aquatic plants.

Explanation:

Turbidity is the measure of relative clarity of a liquid. The higher the intensity of scattered light, the higher the turbidity. Material that causes water to be turbid include clay, silt, very tiny inorganic and organic matter, algae, dissolved colored organic compounds, and plankton and other microscopic organisms

Can you help me on this. I will support your correct answer​

Answers

Iron+ nitric acid = Ferrous nitrate
Zinc+ sulphuric acid= Zinc sulphate

Magnesium chloride, Magnesium nitrate, magnesium sulphate

Please mark brainliest

describe two ways in which gases are similar to liquids in properties​

Answers

Answer:

they have weak intermolecular forces

3. High-density polyethylene is made by polymerizing which starting molecule?
A. Ethanol
B. Ethane
C. Ethyne
D. Ethene

Answers

D.(think it’s spelled Ethylene)

Answer:

Ethene

Explanation:

High-density polyethylene (HDPE) was introduced as a bearing surface in orthopedics in 1962 by Sir John Charnley from Manchester, England. Polyethylene is created through polymerization of ethene. It can be produced through radical polymerization, anionic polymerization, and cationic polymerization

Which among the following mixtures will show tyndal effect?
i) copper sulphate solution
ii) sand in water.
iii) milk.
iv) starch solution ​

Answers

Answer:

milk and starch solution are the colloids, hence these will show the tyndall effect

Answer:

milk and starch solution

Explanation:

Tyndall effect is shown by colloidal solutions. It is not shown by true solutions or suspensions.

Milk and starch solution are colloidal solutions. They show tyndall effect. On the other hand, common salt and copper sulphate solution are true solutions. They do not show tyndall effect.

During an experiment the students prepared three mixtures A)Starch in water B) Sodium chloride solution C) Tincture of Iodine. i) Students observed a visible beam of light through mixture A. Why? ii) Tincture of Iodine did not show Tyndall effect . Explain reason. iii) How can you relate particle size to Tyndall effect?

Answers

The question requires a good knowledge of the meaning of Tyndall effect or scattering of light by false solutions in chemistry

The student observed a beam of visible light through mixture A because A exhibits Tyndall effect

Tincture of Iodine does not show Tyndall effect because its solution consists of particles less than 1 nanometer in solution.

A solution may be classified as a true solution or a false solution. A true solution consists of particles which are less than 1 nanometer in solution. A true solution does not scatter visible light.

A false solution, on the other hand consists of particles larger than 1 nanometer and does scatter visible light.

Starch in water is an example of a false solution or colloid hence it exhibits Tyndall effect. The scattering of visible light by a solution is known as Tyndall effect.

Tincture of iodine and sodium chloride in water are all true solutions hence they do not scatter visible light.

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difference between peak, orbit and orbital​

Answers

Answer:

An orbit is a fixed path on which electrons revolve around the nucleus. An orbital is the probable area of finding the maximum density of electrons in an atom. An orbit is a planar representation, i.e., a two dimensional representation.

3.
Melting point of four solids A, B, C and D are 299 K, 111K, 150K, 340K.their inter
particle forces of attraction are in the order:
(a) A (b) B (c) C (d) B

Answers

Answer:

You have provided wrong option.

Their interparticle forces of attraction are in the order D>A>C>B

So, option (d) D should be there.

In a chemical equation, the symbol that means "dissolved in water" is _____. (s) (l) (aq) (g)

Answers

in a chemical equation, the symbol that means “dissolved in water” is (aq).

difference between Nitrogen 1 oxide and Oxygen​

Answers

Answer:

one atom of oxygen is not equal to oxygen

How the amount of acid rain caused by the burning of fossil fuels can be reduced ?

Answers

Answer:

The amount of acid rain caused by the burning of fossil fuels can be reduced by creating nitrogen oxides in the process of burning coal and other fossil fuels, some power plants are changing the way they burn coal. A great way to reduce acid rain is to produce energy without using fossil fuels. Instead, people can use renewable energy sources, such as solar and wind power.

A sample of gas has a volume of 20 cm³.The pressure is changed to 90 kPa at constant temperature,while the volume increases to 75 cm³.What was the original pressure of the gas?​

Answers

Answer:

337.5kPa ~ 338kPa

Explanation:

Using the ideal gas law PV=nRT we have the following definitions from the problem:

V(initial) = 20cm³

P(initial) = ?kPa

V(final) = 75cm³

P(final) = 90kPa

Since we know that the number of moles of the sample did not change, nor did the temperature, nor does the ideal gas constant (R) we can rewrite this equation to state:

P(initial)V(initial) = nRT =P(final)V(final) ~  P(initial)V(initial) = P(final)V(final)

Rearranging this equation as we are solving for the initial pressure we find that:

P(initial) = (P(final)V(final))/V(initial)

P(initial) = ((90kPa)(75cm³))/20cm³

P(initial) = 337.5kPa ~ 338kPA

Which of the following substances can be used to neutralize HF? Question 6 options: A) NaOH B) HF C) HCl D) SO2

Answers

Answer:

A) NaOH

got it right on the test.

Explanation:

Answer:

NaOH  

Explanation:

Other Questions
Besides plants, what other factor distinguishes one biome from another biome?(A) the number of plant species in the biome(B) the variety of animal species(C) average temperatures and precipitation(D) geographic location report on "road construction and its impact to public health in Nepal, Pokhara(please include the following areas : introduction ,objectives of the study , methodologies, findings, conclusions and recommendations ) Nights and DragonsFrom the memoir of author Abigail Prynne1I sit at my desk listening to thunder growl outside my window. Flashes of light burst through the darkness, and wind races past my window. The thrilling combination of sight and sound conjures up visions of dragons roaring proudly, breathing fire, and soaring across the midnight sky. Dragons first fascinated me when I was a little girl. They have followed me ever since. The magnificent creatures appeared in storybooks I read in the library, paintings I saw in museums, movies I watched in the theater, and the dreams I had in my sleep. By the time I was thirteen, one question consumed me. I wanted to know if dragons ever existed, so I set out on a quest for facts.2As I started my research, I discovered many skeptics. Scientists presented evidence to show why dragons could notand did notexist. They explained that it would be impossible for dragons to fly because they would be too big. They laughed at the idea of dragons breathing fire. They pointed out that no other animal has ever done this. They said that if dragons had lived, someone would have found remains somewhere in the world. No bones about it, there were plenty of logical explanations. It would have been easy for me to accept that the only place dragons ever existed was in the imaginations of those who believed.3I could have given up, but I thought about my grandmother. She always told me that "people who believe that science is the answer to everything are missing out on everything else." With her words in mind, I searched some more. There were many facts that hinted that dragons may not be fictional. I noticed that cultures across the world all described dragons in similar ways. This was odd because they had no way to communicate with each other. I found dragons mentioned in more than just stories. They appeared in old legal papers, in the travel logs of Marco Polo, and in the Bible. I saw that the Chinese calendar uses a different animal each year. Dragons are included along with eleven real animals. I began to believe it was a real possibility that all of these people were talking about a creature that actually existed.4With renewed hope that there was some truth to the legends, I looked for new research. I found that some experts disagreed with popular arguments against dragons. They suggested that a dragon could have four stomachs like a cow. If it created stomach gases like birds, it might create enough to lift itself off the ground. This would give it the ability to fly. If it forced out air when diving toward the earth, it might release gases which could ignite into flame. When the animal died, the stomachs would release strong acids that would dissolve its dead body over time. Biologists backed up these ideas with sketches and models based on known animals. Not everyone agreed with these ideas, but many of the things we accept about dinosaurs and other extinct species started the same way.5I doubt we will ever truly know whether dragons existed. There may always be two sides to the fiery debate. Some will say the stories come from active imaginations. Some will believe with all their hearts that the legendary creatures roamed our ancient world. I don't know for certain which side to believe, but the sound and fury of a night like this makes me smile. It rekindles my childhood dreams and keeps the exciting possibility alive.Which sentence from paragraph 4 makes an explicit statement without offering any implicit suggestions? With renewed hope that there was some truth to the legends, I looked for new research. If it created stomach gases like birds, it might create enough to lift itself off the ground. Biologists backed up these ideas with sketches and models based on known animals. Not everyone agreed with these ideas, but many of the things we accept about dinosaurs and other extinct species started the same way. Add.(-2+6x3 3x_) + (4x3 5 + x)Express the answer in standard form.Enter your answer in the box. WORTH 100 POINTS! The function h(x) is quadratic and h(3) = h(-10) = 0. Which could represent h(x)?1) h(x) = x2 - 13x - 302) h(x) = x2 - 7x - 303) h(x) = 2x2 + 26x - 604) h(x) = 2x2 + 14x - 60 Why is it difficult to bond three phosphate groups to Adenosine?They have the same charge and repel each other.They form a strong attraction to each other.They are like opposite poles of a magnet.The energy is evenly dispersed across all three bonds. What relationship will blood volume have on blood pressure? Advantages of equity financing over debt financing include that: Multiple Choice equity financing does not require repayment. dividends are mandatory. stockholders' control will increase. dividends are tax deductible. Son las 11 mi clase de ingles es las 12 10. (30-i)-(18+6i)+30i Which equation is represented by the graph below? Which news source is most likely to be subjective?A. An article relating the facts about global warmingB. An editorial supporting oil drillingC. An article describing a study about global warmingO D. An article explaining the oil drilling process Tyler almost skipped class but decided that theof missing class was too high. i will mark brainliest!!! Other answers: C. y=25x D. y=25x+8.34 In Washburn's factory, what is the break-even point for the new line of guitars if the retail price is (a) $349, (b) $389, and (c) $309? Also, (d) if Washburn achieves the sales target of 2,000 units at the $349 retail price, what will its profit be? Explain the developement of modern technology?Help pleaseI need correct and appropriate answer. The distance between Kuala Pilah and Bangi is x km. A bus travelled from Kuala Pilah to Bangi at an average speed of 80 km/h. On the return journey from Bangi to Kuala Pilah, the bus travelled at an average speed of 100 km/h and it took 15 minutes less than the previous one. Calculate the value of x.A. 80 kmB. 100 kmC. 120 kmD. 160 km A.) V (-3,-5), K (-1,-2), B (3,-1), Z(2,-5) B.) V(-4, 1), K(-2, 4), B(2,5) Z (1, 1)C.) V (-3,-4), K(-1,-1) B (3,0), Z(2,-4) D.) V (-1,0), K (1, 3), B(5,4), Z(4,0) how many syllables does vacate have? Grammar tutorial: Prepositions: a, hacia, and conPut the words in the correct order.Pedro casa a de la vamos