In the lab, Ann cools a closed container containing 50 grams of steam until all of the steam becomes a liquid. She then cools the container until the liquid water freezes. Which remains constant during all of these changes?

Answers

Answer 1

Answer:

The mass

Explanation:

The only thing that will remain constant during the change of state is the mass of the water molecules.

Steam consists of water molecules in a gaseous state. The mass remains constant as it is cooled from steam to liquid water in a closed container and then frozen to become ice, still within a closed system.

The cooling system is just exchanging energy with the surrounding without exchanging any matter. Hence, the mass of the water molecules remains the same throughout the change of state.


Related Questions

ayooo help i don’t know what this is

Answers

First choice is the correct one :)
I’m pretty sure it’s the second one

THIS IS URGENT PLEASE HELP
Which of the following is possible due to the high surface tension of water? *
A) Lakes don't freeze solid in winter, despite low temperatures.
B) A water strider can walk across the surface of a small pond.
C) Organisms resist temperature changes, although they give off heat.
D) Water can act as a solvent.
E) The pH of water remains exactly neutral.

Answers

Answer:

B) A water strider can walk across the surface of a small pond.

Explanation:

Water striders can walk on top of the water by using the high surface tension of the water and their long, thin legs to distribute their weight over the water. Their legs also have hydrophobic hairs which help them move over the surface.

A water strider can walk across the surface of a small pond, is possible due to the high surface tension of water.

What are Water Striders?

Gerridae are one of the family of insects in the order Hemiptera, commonly known as water striders, water skeeters, water scooters, water bugs, pond skaters, water skippers, or water skimmers.

Consistent with the classification of the Gerridae as true bugs, gerrids have mouthparts evolved for piercing and sucking, and distinguish themselves by having the unusual ability to walk on water, making them pleuston (surface-living) animals.

They are built to transfer their weight to be able to run on top of the water's surface. As a result, one could likely find water striders present in any pond, river, or lake.

More than 1,700 species of gerrids have been described, 10% of them being marine.

What is Surface Tension?

Surface tension in water might be good at performing tricks, such as being able to float a paper clip on its surface.

Surface tension performs many more duties that are vitally important to the environment and people.

Hence, option B is correct.

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If the Earth's axis is tilted towards the Sun, what are those places on Earth experiencing?
It'd help if you could answer, because I don't speak Google.

Answers

Answer:

Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.

Why is the global change model important ? What does it tell us?

Answers

Answer: Climate models are important tools for improving our understanding and predictability of climate behavior on seasonal, annual, decadal, and centennial time scales. Models investigate the degree to which observed climate changes may be due to natural variability, human activity, or a combination of both.

Explanation:

what is a person who studies animals called?

Answers

Answer:

a zoologist cuz zoo is animal and yk what logist means i told u in ur other questions lol

Explanation:

The dark, finger-shaped shadow is the Florida peninsula. The yellow band along the east coast of the U.S. is the Gulf Stream current flowing northward. Much of this water comes from the Equator.

What does this demonstrate?
A.
The Gulf Stream current forms in polar areas.
B.
The Gulf Stream current is the major factor that slows down evaporation.
C.
The Gulf Stream current changes weather patterns on the east coast of Africa.
D.
The Gulf Stream current transports warm water to areas of colder water.

Answers

Answer:

I think is b    

Explanation:because I thing

Answer:it’s d:)

Explanation:study island

Someone can please describe to me the process a cell is living if the cell membrane is damaged

Answers

Answer:

When cells become damaged or die the body makes new cells to replace them. This process is called cell division. One cell doubles by dividing into two. Two cells become four and so on.

Explanation:

When cells die they get created again.

changing the ph toward the optimal ph will do what to the rate of the reaction

Answers

Answer:

in my opinion it would increase the substrate rate of reaction

Explanation:

hope I tried being helpful and thanks

What is the relationship between greenhouse and effect and sunlight ?

Answers

Answer:

In the daytime, sunlight shines into the greenhouse and warms the plants and air inside.  

Explanation:

At nighttime, it's colder outside, but the greenhouse stays pretty warm inside. That's because the glass walls of the greenhouse trap the Sun's heat. The greenhouse effect works much the same way on Earth.

Which of the following processes accounts for genetic variation leading to species diversity?

Meiosis

All accounts for special diversity

Binary fission

Mitosis

Answers

Answer:

eu acho que é a A

um belo dia abençoado

2. Proteases are enzymes that hydrolyze peptide bonds of which type of
compound?
F. Lipids
G. Carbohydrates
H. Proteins
J. Nucleic Acids

Answers

I believe it is H. proteins

Look at the protein below. Which could be its function?

A.) forming muscle fiber
B.) directing the growth of cells
C.) storing energy
D.) insulating the body

Answers

Answer:

I think it's A: Forming muscle fiber

Explanation:

The function of the protein depicted in the diagram is to form a muscle fiber.

What is a muscle fiber?It is composed of myofibrils.They are contractile in nature.They are elastic in nature.They are extensible meaning they can be stretched.They are excitable meaning they have the ability to respond to a stimulusThey appear as a long thin thread and hence named.What is a muscle fiber formed of?

A muscle fiber is formed of actin and myosin filaments.

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which of the following is not a protein that might be found in cell membranes A. enzyme B.lipid C. marker D. transporter​

Answers

Answer:It's the A

Explanation:

Please help!! Question is down below!!

Answers

Answer:

its answer three

Explanation:

organic compounds are to large to defuse into the cell, proteins are digested into simple sugars and starches are digested into amino acid.

hope this helps :)

-by chance may i get brainliest

PLEASE HELP Which of the following is reused many times during photosynthesis?


Question 13 options:


ATP



FADH2



Chlorophyll



All of the above

Answers

Answer:

Atp

Explanation:

11
Identify whether the element is a metal, metalloid, or a nonmetal: Lithium
metal
nonmetal
metalloid
e referred to as:

Answers

The element Lithium is a metal.

In peas, axial (A) flower position is dominant to terminal (a), and tall (L) is dominant to short (l). If a plant that is heterozygous for both traits is allowed to self-fertilize, how many of the offspring would also be heterozygous for both traits?

Answers

Answer:

The correct answer is - 1/4 or 25%.

Explanation:

The parents have a heterozygous condition for both trait flower position and height of the pea plant. The representation of allele would be AaLl for both parents and each parent produce the same gametes that would be AL, Al, aL, and al.

Then the Punnett square will be :

         AL         Al          aL        al

AL     AALL     AALl    AaLL   AaLl

Al     AALl      AAll     AaLl    Aall

aL      AaLL     AaLl    aaLL    aaLl

al       AaLl     Aall       aaLl    aall

Out of 16 offspring 4 have heterozygous which means:

The heterozygous condition will be = 4/16 = 1/4

Thus, the correct answer is - 1/4

*EXTRA POINTS*
If the volume of a gas decreases, what happens to the pressure?

If the volume of a gas increases, what happens to the pressure?

Answers

Answer:

Boyle's law. If the gas volume is decreased, the container wall area decreases and the molecule-wall collision frequency increases, both of which increase the pressure exerted by the gas (Figure 1).

Explanation:

Fasttttttttttttttttttttttttttttttt 15 points

Answers

Answer: Either B or C

I think the answer is B

What do these images model? A. atoms B. compounds C. elements D. mixtures

Answers

Answer:

mixtures

Explanation:

ok where is the images I will be willing to reanswer if you add the images next time.

What is often the first organism to colonize an area

Answers

Answer:

Types of organisms in order in which they would appear during primary succession lichens, mosses, grassed and annual flowers, bushes and shrubs, trees Lichens are often the first species to colonize an environment during primary succession.

Explanation:

Answer:

pioneer species

Explanation:

The slight attractions that develop between oppositely charged regions of nearby molecules are called ______

Answers

Explanation:

They are called, " vanderwals," forces. not as strong as covalent bonds or ionic bonds, but still exist...

The slight attractions that develop between oppositely charged regions of nearby molecules are called Van der Walls force.

When they are at a moderate distance, the molecules attract each other, but when their electron clouds begin to overlap, the molecules repel each other strongly.

Van der Walls force are forces of attraction or repulsion between molecular entities different from those that are due to the electrostatic interaction of ionic groups with each other or with neutral molecules.

That is, they are slight attractive forces that are established between electrically neutral molecules (both polar and nonpolar), but they are very numerous and play a fundamental role in many biological processes.

These form a non-covalent chemical bond in which two types of forces or interactions participate, dispersion forces (which are attractive forces) and repulsion forces.

Therefore, we can conclude that the slight attractions that develop between oppositely charged regions of nearby molecules are called Van der Walls force.

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The __________ perspective focuses on how people process, store, and use information. A. behavioral B. sociocultural C. cognitive D. biological

Answers

The cognitive perspective focuses on how people process, store, as well as useful knowledge.

The cognitive viewpoint demonstrates how effectively people can utilize their mental toughness to concentrate on knowledge, how readily they can use it whenever needed, as well as how they can retain important references for better use.It stresses the mind's entire purpose throughout the mental processes and how well it stores, uses, as well as processes the data.

Thus the response above is right.

Learn more about cognitive perspective here:

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Answer:

D) Cognitive

Explanation:

edge 2023

Which of the following best describes an atom?
Protons, neutrons, and electrons all grouped together in the center.
A core of negatively and positively charged particles surrounded by neutral particles
A core of positive and neutral particles surrounded by negative particles.
A core of electrons and neutrons surrounded by protons

Answers

Answer:

An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.

Explanation:

hope this helps

12 points will make brainleast Easy QUESTION!!!!! please help me

its science!!!!!!

In your own words, describe the base-pairing rules in any DNA molecule.

Answers

Answer:

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                 Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ A always goes with T (Adenine - Thymine)

G always goes with C (Guanine - Cytosine)

If the pairs aren't the way they're supposed to be, this can result in genetic disorders

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

Answer:

The base pairing rules for DNA are governed by the complementary base pairs: adenine (A) with thymine (T) in an A-T pairing and cytosine (C) with guanine (G) in a C-G pairing. Thymine only binds with adenine in a T-A pairing and guanine only binds with cytosine in a G-C pairing.

Explanation:

Which of the following is a carbohydrate serving as a structural component in the cell walls of Plants?
O Fructose
O Phospholipids
O Cholesterol
O Cellulose

Answers

Answer:

Cellulose, because,

Fructose is the monosaccharide so it cant give plant structural support

Phospholipids are not carbohydrates they are Lipids

Cholestrol is a type of steroid so it is not carbohydrate

What happened between layers G and F?
a .triangles became extinct
b. spirals became extinct
c. moons became extinct
d. all of these
e. none of these
plz help!!!!!

Answers

Answer:

a

Explanation:

:) The Big Bang Theory, describing the creation of the universe, is most directly supported by the
O redshift of light from distant galaxies
O presence of volcanoes on Earth
O apparent shape of star constellations
O presence of craters on Earth's Moon​

Answers

Answer:

A

Explanation:

Redshift is when waves on the shift to the redder side of the visible light spectrum, meaning that they are becoming stretched out. This supports the theory that galaxies are moving farther away due to the momentum of the Big Bang, supporting the theory.

Hope this helps! Good luck :)

Big Bang Theory is an explanation that determines how the universe began and expanded. The universe is still stretching and it was started all at a single point.

The correct answer is:

Option A. redshift of light from distant galaxies

The redshift can be explained as:

1. The Doppler effect or red-shift of light from faraway galaxies gives the idea that the universe is expanding and stretching.

2. This accounts for the big bang theory in which space began from a single point and all the matter is moving away from the origin.

The correct answer is  Option A.

To know more about the big bang, refer to the following link:

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Which describes one way that renewable resources differ from nonrenewable resources?
•Renewable resources make cleaner energy.
•It takes longer to replenish renewable resources.
•Renewable resources are more easily located and harvested.
•It often costs much less to produce energy from renewable resources.

Answers

Answer:

the answer is A

Explanation:

i did the exam review  

brainliest plzzzz

Answer:

the answer its A

Explanation:

i did the exam review and i made a 100

Which transport requires no expenditure of energy by the cell

Answers

Answer:

Passive transport

Passive transport requires no energy from the cell. Examples include the diffusion of oxygen and carbon dioxide, osmosis of water, and facilitated diffusion. Types of passive transport.

Answer: Facilitated Diffusion

Explanation:

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Both rows receive the same amount of water and light intensity. She checks the height of the corn growth over the course of 5 months. What is a constant in this experiment? Lights Outby J. Robbins How could this have happened? exclaimed Valancy as she surveyed the storage room full of ruined flowers. Micawber, who had been working with his best friend Valancy at Newflower Market for a year, had been responsible for closing the store the previous night. He hung his head in shame. I have no idea, V, he replied. I swear to you, I thought I closed the door and turned the temperature down. I followed the checklist exactly! Im going to get fired, arent I? Valancy looked at him sympathetically. Um, probably, she said. I wish I could lie to you, but this mistake is going to cost the company a lot of money. Mr. Sheepsnose will be here in a few minutes, and Ill tell him about the flowers then. Wait! cried Micawber. Maybe he doesnt have to know! We could tell him that someone broke into the store last night, and hell never have to know the truth. We can blame it on a disgruntled ex-employee. When 'Road Rage' Darryl got fired last week, he looked pretty disgruntled. No way, Valancy replied. I dont lie for anyone, and neither should you. Mr. Sheepsnose is a nice person, and hell be completely fair with you. There is no reason to make up a crazy story about a break-in. Micawber sighed and glumly sat on an overturned bucket. I guess youre right, he told his friend. I still dont know how I could be so stupid. Mr. Sheepsnose trusted me to close down the store, and Ive let him down. Now I'll never become the CEO of a Fortune-500 company." Good morning, kids, called Mr. Sheepsnose cheerfully as he walked into the store. Why the sad faces? Valancy busied herself with paperwork while Micawber stepped forward to face his supervisor. I have some bad news, sir, he told Mr. Sheepsnose. Somehow, I left the store last night without closing the storage room door, and all of the flowers were ruined. I have no idea how it happened, but I am so sorry. If you want to fire me, I completely understand. Mr. Sheepsnose surveyed the damaged flowers and his despondent employee over the rim of his half-glasses. Well, Micawber, I am impressed, said Mr. Sheepsnose. It took a lot of courage to tell the truth, and not many people would have done the same thing in your position. I know for a fact that you did close the storage room door last night because it was closed when I arrived at midnight. The building manager called me up here because the power went out for the whole block and shut down our refrigeration unit. That is why the flowers are ruinedit wasnt anything you did. Your job is safe, Micawber. In fact, I think I can give you even more responsibility now that youve proven yourself trustworthy. Mr. Sheepsnose patted his relieved employee on the shoulder and went to his office. Thanks for the great advice, Micawber told Valancy as he grabbed a broom and began sweeping the front room. He whistled a happy tune as he began to daydream about becoming a supervisor himself one day.24Select the correct answer.What is the best way to describe the theme of the story?A. Honesty should not protect a bad employee from being fired.B. People do their best work when they are afraid of the boss.C. Ambitious employees are more valuable than honest ones.D. Telling the truth, even when it's difficult, is the best option. What conclusion can you draw from this graph? Which pair of words shares the same suffixEnjoyable, teachable Disappoint, disrepair Mistake, misery Angrily, angered What does demography mean A boat travels 110 feet in 5 seconds. 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