A phase change diagram for water is shown below. The star on the diagram represents the temperature and pressure of some water vapor that a scientist has placed in a special container.
The scientist wants to make changes to the container that will allow the container to have some liquid water, some ice, and some water vapor at the same time. What change should the scientist make to the container?
A.
The temperature should not be changed, but the pressure should be increased.
B.
The temperature should not be changed, but the pressure should be decreased.
C.
The temperature should be increased, but the pressure should not be changed.
D.
The temperature should be decreased, but the pressure should not be changed.
Answers
The temperature should be decreased, but the pressure should not be changed.
What is Temperature and Pressure relation ?In contrast, as a gas's pressure falls, its volume rises as a result of the gas's ability to spread its particles farther apart. Because the volume of the gas has risen, weather balloons become larger as they ascend through the sky to lower pressure areas.
This is because when the atmospheric gas exerts less pressure on the balloon's surface, the inside gas expands until the internal and external pressures are equal.
Some of the early studies that established the quantitative relationship between the pressure and volume of a gas were done by the Irish chemist Robert Boyle (1627-1691).
Therefore, The temperature should be decreased, but the pressure should not be changed.
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Related Questions
All of the following are advantages of using solar energy EXCEPT -
A. It reduces the dependence on fossil fuels.
B. It is a form of coninuous power.
C. It has zero carbon dioxide emissions.
D. it is a renewable energy source.
I don't know what subject this is! But PLEASE HELP ME
Answers
Answer:
I belive it would be B
Explanation:
All of the following are advantages of using solar energy except it is a form of coninuous power and it is responsible for it reduces the dependence on fossil fuels. Thus, option B is correct.
What is fossil fuel?
A fossil fuel has been hydrogen that contain the material found in the nature in the earth's crust from the remain of the dead plants and animals that has been extracted and burned as the fuel. Fossil are natural source of energy, it is made from decomposition of plants and animals. Fossil fuels are found in the earth's crust and it must contains carbon and hydrogen which could gives energy by the burning. Natural gas usually found in pockets above oil deposits. It is also found where natural oil is found.
Coal, oil including natural gas are the best examples of the fossil fuels. Coal has been a material usually found in the sedimentary rock deposits where rock and plants are buried from long time. Oil has been originally found as the solid material between layers of sedimentay rocks, like shale. This material has been heated and converted into a gasoline.
Therefore, All of the following are advantages of using solar energy except it is a form of coninuous power and it is responsible for it reduces the dependence on fossil fuels. Thus, option B is correct.
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can someone make a story about calcium? pls help me
Answers
Answer:
um a story about Calcium? sure... Pls mark me brainliest!
Explanation:
Calvin Calcium was strong. Calvin Calcium was sturdy. Calvin Calcium had very good teeth. He
was a happy little boy and drank all of his Phenyl-Free. But one day all that changed. Here’s what
happened…
“I’m not going to drink my ‘milk’ any more,” said Calvin one morning at breakfast.
“Oooh,” said his mother, “then you can get your calcium from green, leafy
vegetables.”
“No,” said Calvin, “I’m not going to eat green, leafy vegetables either.”
“Oooh,” said his mother, “what will happen to Calvin?”
It wasn’t too long before Calvin found out.
In May, it was time for Calvin to have his dental check-up.
“Oooh,” said the dentist, “you have four cavities, Calvin. Have you
been eating foods with lots of sugar? Have you been forgetting to brush your teeth?
Maybe you haven’t been eating enough foods that give you calcium.” The dentist
filled the four cavities, and Calvin’s teeth were fine again. Calvin didn’t mind—too
much.
But in July, Calvin and his friends, Fred and Linda, were
building a tree fort.
They were almost done when, whoops, Calvin lost his balance and
tumbled to the ground!
“My arm hurts!” wailed Calvin.
“Oooh,” said his mother, running from the kitchen, “we’d better go
to the doctor!”
Doctor Smith felt Calvin’s arm very carefully.
“Oooh,” said the doctor, “you have a broken arm, Calvin.”
He put Calvin’s arm in a cast, and Calvin couldn’t go out to play for a long
time. He missed splashing in Fred’s pool to get cooled off on hot days. He
missed Linda’s birthday party. They played lots of neat games and had his
favorite low protein foods. But most of all, he missed playing with his friends.
He could hear them playing ball and roller skating every day.
Calvin went back to the doctor because it was
taking so long for his arm to heal.
“Oooh,” said the doctor, “it looks as if you haven’t been
eating foods with lots of calcium to make your bones strong.”
The Calvin Calcium Story
One morning Calvin said to his mother, “I’d like some of my ‘milk’ for breakfast.”
So that morning Calvin drank his ‘milk’. It tasted very good.
At lunch, Calvin said, “I’d like some green, leafy vegetables, please.”
So that noon, Calvin had green, leafy vegetables. They tasted very good too.
At dinner, Calvin said, “I’d like some green, leafy vegetables AND some ‘milk’, please.”
So Calvin had collard greens and lots of his ‘milk’ for supper. How good they tasted!
Calvin’s arm was almost healed now. Soon he would be able to join his
friends at the pool, on skates, and in their ball games.
When Calvin went to the dentist that fall, he had only one cavity. Calvin said
he had been brushing his teeth after eating AND eating foods that give him
calcium, especially his ‘milk’.
Calvin was again a strong, sturdy, happy boy—with very good teeth and strong bones!
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Interestingly, calcium seems to come in fifth place wherever it goes: It is the fifth most abundant element by mass in the Earth's crust (after oxygen, silicon, aluminum and iron); the fifth most abundant dissolved ion in seawater (after sodium, chloride, magnesium and sulfate); and the fifth most abundant element in the human body (after oxygen, carbon, hydrogen and nitrogen). It is, however, the most abundant metallic element in the human body, 99 percent of which can be found in our bones and teeth (about 2 lbs. of it!), according to Chemicool.
In its pure elemental state, calcium is a soft, silvery-white alkaline earth metal. It is important to note, however, that calcium is never found in this isolated state in nature, but exists instead in compounds. Calcium compounds can be found in a variety of minerals, including limestone (calcium carbonate), gypsum (calcium sulfate) and fluorite (calcium fluoride), according to Chemicool. Calcium makes up about 4.2 percent of the Earth's crust by weight.
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In order to isolate pure calcium, it must be extracted through electrolysis, a technique that uses a direct electrical current to separate elements from their naturally occurring sources. Once isolated, calcium is quite reactive and will form a grayish-white oxide and nitride coating when exposed to air.
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Calcium (Ca) is No. 20 in the periodic table of the elements, appearing just below magnesium in the same column (Group IIA) as the other alkaline earth metals (a group of metals that are more chemically reactive than most metals). Calcium comes from the Latin word "calx," meaning lime. This is not a reference to the fruit, but rather calcium oxide (CaO), the useful building material derived from heated limestone.
Calcium is extremely important to the human body. Not only is it vital for bones and teeth, but it assists in muscle movement by carrying messages from the brain to all our body parts. Cells in all living things must communicate with, or "signal," one another. Calcium ions act as vital messengers between these cells and are necessary in all multicellular life forms. They also assist in the release of hormones and enzymes.
In food, calcium is found in mineral form. Foods high in calcium include dairy products — such as milk, cheese and yogurt — and some vegetables, such as kale, watercress, spinach and broccoli. In order for calcium to absorb properly, it should be taken with vitamin D. Magnesium is also necessary for proper assimilation and use of calcium in the body. In fact, if we take too much calcium and not enough magnesium, it can cause problems in the body.
Lime, or calcium oxide, produces a brilliant, intense light when exposed to an oxyhydrogen flame, according to Chemicool. In the 1800s, before electricity was invented, this substance was used to light up the theater so actors truly performed "in the limelight" — hence the saying.
When turtles (typically pet turtles) don't have enough calcium circulating through their blood, they may get an ailment called Metabolic Bone Disease, commonly known as Soft Shell Syndrome. For a turtle to be healthy, the calcium to phosphorous ratio should be 2:1. When their calcium levels are low, however, the mineral is leached from their bones in the body's attempt to balance things out. The result is soft bones, weakness and a soft, deformed shell, and it often results in death. The disease can be prevented with a proper diet and adequate sunlight (or other appropriate lighting for reptiles).
Stalactites and stalagmites, the icicle-shaped formations found in underground caverns, are formed slowly over time by the build-up of calcite residue. This occurs when water seeps through the cracks in the ceiling of a limestone cave, dissolving and carrying along traces of calcite, the building material of limestone. As the water drips from the ceiling, this calcite residue begins to build up at the site of the drip, eventually resulting in icicle-shaped stalactites hanging from the cave ceiling. This water dripping from the stalactites then forms stalagmites on the ground
Describe the main difference between passive and active transport
Answers
Answer:
In Active transport the molecules are moved across the cell membrane, pumping the molecules against the concentration gradient using ATP (energy). In Passive transport, the molecules are moved within and across the cell membrane and thus transporting it through the concentration gradient, without using ATP (energy).
Explanation:
hope it is hopeful
while active transport requires energy to get done.
What is an important function of mitochondria?
a.converting energy from sunlight into chemical energy in ATP
b.converting energy from sunlight into chemical energy in glucose products
c.converting chemical energy from ATP into chemical energy in glucose products
d. converting chemical energy from glucose into chemical energy in ATP
Answers
Answer:
C. Converting chemical energy from ATP into chemical energy in glucose products.
Explanation:
Mitochondria are known as the powerhouses of a cell, as they are responsible for making ATP, the cell's main energy carrying molecule.
.・。.・゜✭・have a nice day・✫・゜・。.
Which statement is true of chloroplasts?
A. They transport glucose into the cell.
B.They convert light energy into chemical energy.
C. They convert the energy in glucose into a more usable form.
D. They are present in animal cells, but not in plant cells.
Answers
Answer:
B
Explanation:
Answer:
They convert light energy into chemical energy.
Explanation:
I had this on a test a few weeks ago and got it correct with this answer
The atoms of gaseous helium are
A.
close together, moving around one another.
B.
far apart, moving fast, and bouncing off the container walls.
C.
close together, vibrating in a rigid structure.
D.
not moving at all.
Answers
Answer:
B) far apart, moving fast, and bouncing off the container walls
Explanation:
Gases molecules are the fastest moving matter and the most spread out.
What kind of reservoir shaped a lot of the Grand Canyon? How do you know?
i can't find science so this will be kind of out of place. this is 6th grade work
25 points!!!!
Answers
How are crops genetically modified?
PLZ HELP
Answers
Answer:To produce a GM plant, new DNA is transferred into plant cells. Usually, the cells are then grown in tissue culture where they develop into plants. Genetic modification of plants involves adding a specific stretch of DNA into the plant's genome, giving it new or different characteristics.
Explanation:
Answer:
by crossbreeding and controlling
Explanation:
What condition is required for piles of sediment to become a sedimentary rock?
1. Low force
2. High energy
3. High pressure
or 4. Low temperature
Answers
Sedimentary rocks are created by the accumulation of already existing rocks or fragments of extinct organisms on the Earth's surface, hence option 3 is correct.
What is a sedimentary rock?Weathering causes rock fragments to become loose, which are subsequently moved to a basin or depression where sediment is trapped.
Sedimentary rock is created when sediment is firmly buried and gets compressed and cemented. Large boulders to tiny clay particles have been found in clastic sedimentary rocks.
The process of erosion involves moving weathering products from the weathering site, either as solid material or as dissolved components, to finally be deposited as sediment.
Therefore, sediment is any unconsolidated accumulation of solid, weathered material to become a sedimentary rock that requires High pressure, hence option 3 is correct.
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What is a solstice?
1. the day in Earth’s orbit that marks the beginning of spring or autumn
2. the day in Earth’s orbit in which the Earth is tilted 23.5°
3. the day in Earth’s orbit that marks the beginning of summer or winter
4. the day in Earth’s orbit when sunlight and darkness are of equal lengths
I need answer ASAP!!! Plz help!
Answers
Which of the statement(s) about eclipses is/are true?
A.The moon blocking out sunlight is what causes both a solar eclipse and a lunar eclipse, the difference is a solar eclipse the sun is totally blocked out, but in a lunar eclipse the sun is only partially blocked out.
B. A solar eclipse occurs only during 1st Quarter Moon and a lunar eclipse only occurs during 3rd Quarter Moon.
C.The earth blocking sunlight to the moon is a solar eclipse. The moon blocking sunlight to the earth is a lunar eclipse.
D. A solar eclipse occurs when the moon blocks out the sun casting a shadow on earth. A lunar eclipse is when the earth blocks sunlight casting a shadow on the moon.
Answers
Answer:
D.
Explanation:
A. Is wrong because the moon blocking the sun is a solar eclipse while the Earth blocking sunlight to the moon is a lunar eclipse.
B. Is wrong because solar eclipses occur during a new moon.
C. I s wrong because the inverse is true.
the sun is fully blocked out by the moon
A hammer can be used to see how a mineral breaks. If you observe square chunks of the mineral when broken, what can you conclude?
The mineral is soft.
The mineral is hard.
The mineral has cleavage.
The mineral does not have cleavage.
Answers
Answer:
The mineral has cleavage
Explanation:
Cleavage describes the shape of internal planes of weakness between the molecules that make up a mineral, often forming 3-D geometric shapes like cubes and prisms. When a mineral breaks, it will commonly break along these cleavage planes regardless of how hard or soft the mineral is.
Answer: It’s C. I think
Explanation: I hope this helps! And happy new yrs!
A student has two solid blocks that have different masses. The student knows that each block is composed of a pure substance, but she wants to know if the blocks are composed of the same pure substance. Which of these would best show that the blocks are composed of different substances?
A.
Both blocks sink when placed in water.
B.
Both blocks can be scratched by a piece of glass.
C.
One block conducts electricity and the other does not.
D.
One block has a greater volume than the other block.
Answers
Answer: I think the answer would be (D) because mass and volume are kinda different and If one has a different volume then it would have a different mass right?
Explanation:
A and b don’t show anything that is different between the rocks so they are both cancelled. With D, if a block has a greater volume that has nothing to do with the substances. This shows that C is the best answer because if one block conducts electricity, that means it is composed of something different (for example metal).
Describe the path cereal takes from eating with the mouth to glucose in the body cells.
Answers
Answer: The hollow organs that make up the GI tract are the mouth, esophagus, stomach, small intestine, large intestine—which includes the rectum—and anus. Food enters the mouth and passes to the anus through the hollow organs of the GI tract. The liver, pancreas, and gallbladder are the solid organs of the digestive system.
Explanation:
cereal goes into mouth and it broken down after going through the GI tract (gastrointestinal tract) … this chemical reaction gives you energy and nutrients from said cereal
Number 1 of the cell in the image below is the
Answers
Answer:
it looks like chloroplast is this a plant or animal cell?
Explanation:
Superhero DNA
1. What determines a person’s super hero ability?
2. If the DNA sequence were to change, what would this be called?
3. What are proteins and what do they code for?
Answers
2. Mutation
3. Proteins are the key working molecules and building blocks in all cells and they code for amino acids.
Outline the pathway of a breath of air from the nose to the alveoli.
Answers
Answer:
Pathway of air: nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)
Explanation:
Mark as Brainliest Answer
Air travels through the following structures on its path to the alveoli (the site of gas exchange): nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles.
What is breathing?The trachea (windpipe), which is further separated into bronchial tubes, receives it from there. Bronchioles are another division of the bronchial tube, the little alveoli structure is where the bronchioles eventually come to a stop.
Through our noses, we breathe air into our bodies, after then, it moves via the larynx, pharynx, and nasal cavity before entering the windpipe, also known as the trachea.
Therefore, air enters both lungs through bronchi that branch off of the trachea.
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Superhero DNA
1. What determines a person’s super hero ability?
2. If the DNA sequence were to change, what would this be called?
3. What are proteins and what do they code for?
*just for an assignment*
Answers
Answer:
the proteins are ribosomes
Explanation:
Answer:
1) Strength and agility?
Explanation:
If DNA sequence were to change in super hero's, what would this be called?
*Just for an assignment*
Answers
what would the waves on the near side of the breakwater look like if the opening in the breakwater were 5 times wider
Answers
Answer:
λ = 5.65m
Explanation:
List the differences of Eukaryotic and Prokaryotic cells.
- Thank you :)
Answers
Answer:
Eukaryotes are more complex they have a nucleus prokaryotes do not have a nucleus humans fungi plants and protists fall under Eukaryotes and bacteria is an example of prokaryotes
Explanation:
hope this helps :) this took me a while! :)
Lab Report
Evidence of Plate Motion
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_EvidenceOfPlateMotion_Alice_Jones.doc).
Introduction
1. What was the purpose of the experiment?
Type your answer here:
2. How does hot spot theory explain how the Hawaiian Islands formed?
Type your answer here:
Experimental Methods
1. What tools did you use to collect your data?
Type your answer here:
2. Describe the procedure that you followed to collect your data.
Type your answer here:
Data and Observations
1. Record your observations. Include a data table with the names of the volcanoes, their distance from Kilauea, and their ages.
Type your answer here:
2. Make a graph that shows the distance between the volcanoes and Kilauea versus the ages of the volcanoes. You may plot your data on the template provided or use a spreadsheet program to make a graph.
Type your answer here:
However get 100 points and brainlest
Answers
Sorry but you have to actually do the lab from the assignment page to answer these questions.
I cant do it since I don't know what we know from the lab.
If you can do it that would work out.
Sorry : /
Answer: We cant answer the questions without knowing what the other details of the lab are.
Explanation:
What does it mean when two objects are said to exert a mutual force of attraction?
A. Each takes turns attracting the other. B. They attract each other at the same time.
C. A third object takes turns attracting each of them.
D. A third object attracts them both at the same time.
Answers
Answer:
B
It says "mutual", so both objects are attracting at the same time. In addition, I do not believe it is possible for objects to take turn acttracting each other so I believe A is false. I think C and D are wrong because a third object is not related to any of these choices. It also explicitly states "two objects" and when it says mutual, it means they are attracting each other.
How could you describe the size of an atom?
A It is so large it is bigger than a tree in the forest.
B It is so small it cannot be seen without magnification.
C It is the size of a grain of sand and can be seen with our eyes.
D It is the size of an apple or a large piece of fruit.
Answers
Atoms are extremely small, typically around 100 picometers across.
The hardest question ever: What is truth?
Answers
The diagram shows an animal-like protist.
This is most likely which type of protist?
a sarcodine because it has a nucleus
a sarcodine because it has a pseudopod
a parasite because it has cilia
a parasite because it has a flagellum
Answers
Answer:
a sarcodine because it has a pseudopod
Explanation:
describe how the greenhouse effect interacts with the hydrosphere, atmosphere, and cryosphere
Answers
:
loook over ur notes promise youll find thrm
Human contributions to greenhouse gases in the atmosphere are warming the earth's surface - a process which is projected to increase evaporation of surface water and accelerate the hydrologic cycle. In turn, a warmer atmosphere can hold more water vapor.
Atmosphere
This process makes Earth much warmer than it would be without an atmosphere. The greenhouse effect is one of the things that makes Earth a comfortable place to live.
Cryosphere
By reflecting sunlight, ice and snow have a cooling effect on the climate. Removing the ice to leave darker land or ocean reduces this cooling and so amplifies climate change. Thawing permafrost releases significant amounts of greenhouse gases, causing further warming.
How do genetically modified foods affect society and the environment?
Answers
Answer:
Genetic modification produces genetically modified animals, plants and organisms. This could result from differences in nutritional content, allergic response, or undesired side effects such as toxicity, organ damage, or gene transfer.
Explanation:
existing species can be overrun by more dominant new species.
One important environmental impact of genetically modified (GM) foods is the threat to biodiversity resulting from the genetic transfer from GM crops to native plant species.
What molecule that is created during photosynthesis provides energy for cellular processes?
chlorophyll
ATP
oxygen
glucose
Answers
Answer:
D. glucose.
Explanation:
I don't have any info on it so, hope this helps.
What best describes direct democracy?
1. A government where people vote on laws and rules
2. A government where people vote for representatives
3. A government where citizens rule
4. A government where representatives make laws
