Answer:
When the mixture settles, there will be no visible salt, but she will see the iron shavings at the bottom of the beaker and the woodchips floating.
Explanation:
The salt will dissolve, the iron shavings will sink and the wood chips will float because they're less dense.
Which of the following is NOT true about analog signals?
A) Continuous stream of information and the wave looks like this:
B) Carries noise which creates a lower quality signal.
C) Information is converted to numbers (digits) which is a code for on and off. More reliable and stored easily.
D) Can degrade over time and distance.
Answer: Noise is more easily filtered from digital signals.
Explanation:
Answer: A) Continuous stream of information and the wave looks like this, is incorrect.
Explanation:
A, B, and C are all correct, which leaves A.
what is the relationship between convince and suspect?
Which statement about the movement of the sun and stars is correct?(1 point)
Responses
They move from east to west across the sky each day.
They move from east to west across the sky each day.
They move from south to north across the sky each day.
They move from south to north across the sky each day.
They move from north to south across the sky each day.
They move from north to south across the sky each day.
They move from west to east across the sky each day.
They move from west to east across the sky each day. this is science btw
Answer: East to West
Explanation:
The following exothermic reaction is allowed to reach equilibrium. What
happens when the reaction temperature is decreased? (think about what
side heat would be on in an exothermic reaction)
2 H, + 02 → 2H2O
O Favors the forward reaction
O Favors the reverse reaction
O The reaction is still at equilibrium
How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
If a metal object and a plastic object are both at the same cold temperature and you pick them up which one will feel colder in your hand? In one or two sentences, explain why.
Explanation:
Even though metals conduct heat faster than plastics, experiments suggest that liquids in metal containers stay cold about as long as they do in opaque or semi-transparent plastic ones.
Can somebody help me with this, please? Please Asap
Answer:
im not sure what exactly you want? if its answering the questions then search up each one and rephrase the answers you get, for instance for mitochondria is the powerhouse of the cell. just write something simple thats what i did when i had to do something like this it took only a couple of minutes
Explanation:
The Organelles help the cell to function efficiently.
What are the organelles in the cell?I can see that your question has to do with the organelles in the cell but I don't quite get the analogies that you intend to use. However, I would explain the organelles one after the other.
Endoplasmic reticulum: The endoplasmic reticulum (ER) is a network of membranous tubes and sacs within the cytoplasm of eukaryotic cells. It serves as a transport system for proteins and lipids, as well as a site for folding and modification of newly synthesized proteins.
Ribosomes: Ribosomes are complex molecular machines that are found in the cytoplasm of all living cells. They are responsible for synthesizing proteins from amino acids, which are the building blocks of proteins.
Mitochondria: These are organelles found in the cytoplasm of eukaryotic cells. They are often referred to as the "powerhouses" of the cell because they are responsible for producing most of the cell's energy in the form of ATP (adenosine triphosphate).
Vacuole: Vacuoles are membrane-bound organelles found in eukaryotic cells. They are large, fluid-filled compartments that serve several important functions within the cell, including storage of nutrients and waste, regulation of the cell's water balance, and maintenance of cell shape.
Cytoplasm: Cytoplasm is the gel-like substance that fills the interior of eukaryotic cells, excluding the nucleus. It is a complex mixture of water, ions, organic molecules, and a variety of cellular structures, including organelles such as mitochondria, ribosomes, endoplasmic reticulum, and lysosomes.
Lysosomes :Lysosomes are membrane-bound organelles found in eukaryotic cells. They are referred to as the "garbage trucks" of the cell because they are responsible for breaking down and recycling cellular waste and unwanted material.
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Explain the correlation between chemical properties and chemical changes. (plz i not sure on the answer so it would mean a lot if you could help me.)
Answer:
Explanation:
A chemical property describes the ability of a substance to undergo a specific chemical change.
A chemical reaction is a process that occurs when one or more substances are changed into one or more new substances.
Differences
Chemical properties are properties that can be observed or measured when a substance undergoes a chemical change.
Physical properties are properties that can be observed without bringing a chemical change.
Another one
chemical properties; can be used to predict how substances react.
chemical changes; It is mostly used in identifying or describing the substance.
Which of sully's traits are
yes, their traits are
and
sometimes
Explain how the design of a two-tier ditch helps control farm pollution.
Answer:
Plants and soil microbes at that level help trap soils and catch nutrients, such as phosphorus and nitrate. The design also slows water flow under most conditions Compared to a trapezoidal ditch upstream, the two-stage ditch has clearer water flowing out. That means less soil is flowing away.
Explanation:
brainliest pls
Candice did an experiment where wondered if temperature affects how cheese molds. She put a piece of cheese next to a different heat lamp and then measured how much mold was on each cheese. What is the DEPENDENT variable?
please help me I would apprecitated
The general formula for
Compound + Compound
----->
Compound + Compound
A. Synthesis Reactions
B .Double Replacement Reactions
Answer:
single replacement
Explanation:
If it has one plus sign it is decomposition or synthesis
however if it has two plus signs then it is single or double replacement
True or False: Organic substances are always made from the same four elements including carbon, hydrogen, oxygen, and nitrogen.
FALSE
TRUE
Answer:
Four elements, hydrogen, carbon, oxygen and nitrogen, are the major components of most organic compounds.Answer:
true
Explanation:
True or False
Low, gray, layered clouds that cover the sky and bring steady rain are nimbostratus clouds.
Answer:
true
Explanation:
it indicates a steady rain therefore true
Describe the chemical reaction based on the chemical equation below. Also, explain whether the equation is balanced.
I don't see any chemical Equation
(Mark as Brainiest)
Answer:u dont have no picture ofbit u need to show us whst it is
Explanation:
Ong ohoje is glitch ant type hate when it do thsi
Oil is a powerful source of energy used for cars, machines, and many other purposes. While studying sources of energy that could replace the use of oil, a student thinks about solar power, wind power, nuclear power, and electric batteries. The students asks,"Which type of source will waste the least energy and provide the most energy in all situations?"
Which best describes why a scientist would ask a different question than this one?
O The question asks about subjective personal preferences regarding energy.
O The question focuses on the objective measurements of amounts of energy.
O The question has too wide of a focus, as though all situations can be studied at once.
O The question is focused on the future and finding new answers about changing needs.
Answer:
C
Explanation:
scientists usually focus on one specific problem, rather than a whole range. so the answer would be that it's too wide a focus.
btw this is where the crown is on the bottom of the question
Answer:
c
Explanation:
In 3 paragraphs, describe how weathering changes the earth's surface. Please do not copy and paste.
Answer:
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time.
The effects of weathering disintegrate and alter mineral and rocks near or at the earth's surface. This shapes the earth's surface through such processes as wind and rain erosion or cracks caused by freezing and thawing. Each process has a distinct effect on rocks and minerals. Mechanical weathering increases the rate of chemical weathering. As rock breaks into smaller pieces, the surface area of the pieces increases Figure below. With more surfaces exposed, there are more surfaces on which chemical weathering can occur. Mechanical weathering may increase the rate of chemical weathering.
Weathering, erosion, and deposition are processes that act together to wear down and build up the Earth's surface. These processes have occurred over billions of years. Weathering is any process that breaks down rocks and creates sediments. Weathering causes the disintegration of rock near the surface of the earth. Plant and animal life, atmosphere and water are the major causes of weathering. Weathering breaks down and loosens the surface minerals of rock so they can be transported away by agents of erosion such as water, wind and ice.
What is an ellipse please help)
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
if i have 17 apples and i eat 17 apples how many pears do i have?
Answer:
If you eat all 17 apples, you will not have any apples left. However, the number of pears you have is not related to the number of apples you ate. So, the number of pears you have is unknown and not affected by the number of apples you ate.
How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)
a. The atom’s volume increases.
b. The atom’s mass increases.
c. The atom becomes positively charged.
d. The atom becomes negatively charged.
c. The atom becomes positively charged
if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom
What might happen if there is excessive water removal from the Central Valley Aquifer in California?(1 point) Responses
A. It can cause severe weather changes in California.
B. It can cause severe weather changes in California.
C. It can transform California completely to a desert.
D. It can transform California completely to a desert.
Answer:
A
Explanation:
California is surrounded by the sea so it would never run out.
(pls help)
Guadalupé’s Argument:
Christchurch’s air temperature is cooler than usual during El Niño years because the prevailing winds are disrupted and the currents change. Therefore, the change in air temperature is caused by changing winds and currents.
Anthony’s Argument:
Christchurch’s air temperature is cooler than usual during El Niño years because the prevailing winds are disrupted. This evidence matters because prevailing winds push the warm currents that pass Christchurch. These currents carry energy, and that energy is transferred to the air, which makes the air warmer. When prevailing winds are disrupted, they do not push the currents toward Christchurch, so the energy transfer does not happen. This makes the air temperature cooler. Therefore, the change in air temperature is caused by changing winds and changing currents.
Who's argument is more convincing?
Guadalupé’s or Anthony's
Which group of elements is not usually reactive with any other elements?
A. metaloids
B. plastics
C. noble gases
D. metals
Answer:
Noble gases
Explanation:
Noble gases are usallly unreactive.
Answer:
Nobel gases
Explanation:
Choose all the answers that apply.
Argon (Ar) is in group 18. Argon _____.
forms a salt when combined with a metal
has 18 electron shells
has properties similar to other elements in group 18
does not react readily with other elements
is part of the noble gas group
NEEDS TO BE ANSWERED ASAP
Argon (Ar) is in group 18. Argon is part of the noble gas group. Therefore, option D is correct.
What do you mean by noble gas ?The term noble gas is defined as any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. They are also called as inert gas element.
Noble gases, which are most commonly found as monatomic gases, have completely filled outer electron shells and thus have no desire to react with other elements, resulting in very few compounds.
Helium, neon, argon, krypton, xenon, and sometimes radon are examples of rare gases with high stability and extremely low reaction rates. Also known as inert gas.
Argon is called as noble gas element because they have completely filled their outermost shell.
Thus, option C is correct.
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Which of the following shows the correct sequence of the Cell Cycle?
Prophase, Metaphase, Telophase, Cytokinesis, Interphase, Anaphase
Interphase, Cytokinesis, Prophase, Metaphase, Anaphase, Telophase
Cytokinesis, Interphase, Prophase, Telophase, Metaphase, Interphase
Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
Interphase, Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis are the proper phases of the cell cycle. The series of actions that take place between the development of a mother cell and the production of two daughter cells is known as the cell cycle.
Interphase and cell division are the two main stages. The phase of the cell cycle known as interphase is when the cell develops and gets ready to divide. The initial stage of cell division, known as prophase, occurs when the nuclear envelope separates and the chromosomes condense.
The second stage of cell division, known as metaphase, is when the chromosomes align in the centre of the cell. The third stage of cell division, known as anaphase, is when the chromosomes split and migrate to the opposing poles of the cell.
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1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL
To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.
n a covalent bond: A. Both atoms share their electrons. B. One atom accepts electrons from another. C. The atoms attract each other but their electrons do not interact. D. None of these.
Answer:
Hey there!
In a covalent bond, both atoms share their electrons.
Hope this helps :)
The correct statement is that in a covalent bond, both atoms share their electrons. The correct answer is A. Both atoms share their electrons.
In a covalent bond, both atoms share their electrons to achieve a more stable electron configuration. Covalent bonds occur between nonmetal atoms, and they involve the sharing of electron pairs between the participating atoms. This sharing allows both atoms to achieve a more complete octet (or duet for hydrogen) in their outermost energy level.
Unlike ionic bonds, where one atom transfers electrons to another, covalent bonds involve a mutual sharing of electrons. This sharing can be equal (nonpolar covalent) or unequal (polar covalent) depending on the electronegativity difference between the atoms involved.
Option B, "One atom accepts electrons from another," is not characteristic of a covalent bond. That description aligns more with an ionic bond, where one atom donates electrons to another, resulting in the formation of charged ions.
Option C, "The atoms attract each other but their electrons do not interact," does not accurately describe a covalent bond. In a covalent bond, the sharing of electrons is the basis of the interaction between atoms, and the electrons of both atoms do interact and participate in the bond formation.
Therefore, the correct statement is that in a covalent bond, both atoms share their electrons.
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help me on this question please need answer today.
How do you think plants would grow in space? Which tropism(s) would be affected and why?
Answer: Mainly gravitropism because of the lack of gravity. The other two tropisms depend on the circumstance that it is in.
Explanation:
Answer: Plants use other environmental factors, such as light, to orient and guide growth
Explanation: In the absence of gravity, plants use other environmental factors, such as light, to orient and guide growth. A bank of light-emitting diodes (LEDs) above the plants produces a spectrum of light suited for the plants' growth.
Research gestation and mating. Find out three other mammals' gestation periods and mating rituals. How long is the gestation period, how do the mates court each other, and do they mate for life? What are some other interesting facts? Choose any three mammals you are interested in and use any sources you like. Write a three-paragraph essay comparing the gestation period of the three animals.
For an extra challenge, see if you can find out if any mammal has a shorter gestation period than mice or a longer one than Asian elephants.
Answer:
hold on i will help you soon
The period of time when sexual intercourse takes place between two organisms is called mating. However, all the matings need not end in fertilization.
The gestation period is a time when the embryo develops completely into a fetus. This is usually from the time of fertilization to the time of giving birth.
Let us take the comparison of the gestation period of 3 mammals.
The gestation period of a cow varies from 279- 287 days. The mating between the bull and cow occurs during the heat or oestrus period of the cow. At that time the bull mounts on the cow or vice-versa may happen during the mating period. This is termed bulling.
In the case of horses, the gestation period is 320-380days. The mating ritual in a horse is a bit different than in a cow. It usually has three phases of sexual behavior which includes: courtship, mating, and post mating behavior. During courtship, the stallion which is the male horse will approach the mare, prance, sniff her, nuzzle her, and groom her. The mare which is the female horse may squeal, kick, or move away to show the stallion that she is not ready. When the mare is receptive to breeding, she may stand still, deviate her tail, and urinate, leading the stallion to mount her. It usually breeds well in pastures than in controlled environmental breeding conditions.
Whereas in camels, the gestation period is far longer than in cows and horses. It is about 360-440days. The male camel displays its organ called a dulla to show out is ready for mating. The male camel Urinates on its own tail and swishes it over its back so that the Urine contains female-attracting pheromones. It shows distinct violent behavior towards other male camels. The female camel undergoes an estrous cycle in the breeding season which lasts receptive for 3-4 days, and non-receptive following the other 10 days. In the receptive period, the camel sits down and exposes its genitalia for the male camel to copulate. The whole mating takes about 20 minutes and is accompanied by gurgling and frothing by the male and bleating by the females.
It should be noted that African elephants have longer gestation periods like Asian elephants whereas no other animal has a longer gestation period than an elephant or a shorter gestation period than mice.
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