Select the correct answer.
Why is carbon considered tetravalent?
A. Since it has four electrons in its outermost orbital, it needs four more electrons to complete its octet.
B. Since it has two electrons in its outermost orbital, it needs four more electrons to complete its octet.
C. Since it has four electrons its outermost orbital, it can donate four electrons to complete its octet.
Answers
Answer:
The word tetravalent means having a valence of four because of the prefix - tetra. Carbon is considered tetravalent because it has four electrons in its outermost orbital. In order to follow the octet rule, it has to share four other electrons with other atoms. Thus, the answer is the first choice.
Pretty sure this is right! Hope it helps
Related Questions
Evidence collected from a victim at a crime scene includes the following:
3rd instar of a blowfly
Hair that is black and crescent shaped, with a fragmented medulla
Black soot in the lungs
What inference can be made about the victim using the evidence?
The victim has African ancestry and may have died in a fire four days ago.
The victim has European ancestry and may have died in a fire over a week ago.
The victim has Asian ancestry and was likely killed elsewhere by fire two days before.
The victim has European ancestry, and the body was burned after death four days ago.
Answers
'The victim has European ancestry, and the body was burned after death four days ago'.
What do you mean by victim?
Victim is a term used to describe an individual who has suffered harm, injury, or loss due to the actions of another person or entity. Victims can suffer physical, emotional, psychological, and financial harm. Victims may also suffer from secondary victimization, which is when they experience further harm due to the reactions of others to their victimization.
The 3rd instar of a blowfly indicates that the body had been dead for four days. The hair suggests that the victim likely had European ancestry, as crescent shaped black hair is common in people of European descent. The presence of black soot in the lungs indicates that the body was burned after death.
Hence, option D is correct.
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Grain or cereal crops include ........... and.......... .
Answers
Answer:
Grain or cereal crops include ......wheat..... and.....rice......
Explanation:
Grain or cereal crops include wheat and rice.hope it is helpful to you
The Greek suffix -ologist means "one who studies or specializes in." What does a cardiologist do?
Answers
Answer:
A cardiologist is a physician who specializes in the treatment of diseases of the heart and blood vessels, which affect the cardiovascular system. A practitioner must complete four years of medical school and then six or eight years of internal medicine and specialist cardiology training to become a cardiologist.
Explanation:
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Why was it necessary to absorb CO2 in the soybean respiration experiment?
Answers
Answer:
Plants use CO2 to photosynthesise
Question 5
In what order were the following energy sources discovered by humans?
a. Biomass energy was discovered first; then fossil
fuels, then fuel cells
c. Fuel cells were discovered first; then fossil fuels, then
biomass energy
d. Biomass energy was discovered first, then fuel cells,
then fossil fuels
Answers
Answer:
biomass first then fossil fuel and fuel cells
Energy sources are the mandatory for day to day activities. The correct order of this is first biomass energy was discovered, then fossil fuels and then fuel cells, i.e., option a.
What are different energy sources?Energy sources can be either renewable or non-renewable, based on its origin.
The one that cannot be exhausted are called renewable resources, example air, water, etc.
The one that can be exhausted due to overuse is non-renewable resource, example fossil fuels, coals, etc.
The correct order of the energy resources discovered by humans is first biomass energy, fossil fuels, and finally fuel cells.
Thus, the correct option is a.
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A veterinarian is trying to ascertain why a herd of sheep suddenly all have green lips and muzzles and are coughing and vomiting. He believes that they have ingested a biotoxin and asks the owner if he has noted any rubber bitterweed in his fields. The farmer is incredulous, saying, “It’s right in the name—BITTERweed. Sheep don’t eat that stuff.” Which fact would support the veterinarian’s theory that these sheep have eaten the poisonous scrub?
A.
Bitterweed grows in most parts of America.
B.
The weed is actually very sweet and sheep like the taste.
C.
If they have not been fed properly, sheep will eat bitterweed.
D.
Sheep will eat anything that is not tied down.
Answers
Answer:
C. If they have not been fed properly...
Explanation:
If they have not been fed properly, sheep will eat bitterweed. This fact would support the veterinarian's theory that the sheep have eaten the poisonous scrub, as it suggests that the sheep may have turned to eating the bitterweed due to hunger or malnutrition.
Why does the moon appear differently thoughout the month?
A. The light generated from the moon turns on and off throughout the month.
B. The moon is orbiting the earth over the month and our view of the sunlit side changes.
C. The moon is orbiting the sun and our view of the sunlit side changes throughout the month.
D. The light reflected from the Earth's lights at different angles cause us to see it differently
Answers
Answer:
The moon moves through space in two ways: It revolves around Earth and also rotates on its own axis. The moon rotates once on its axis in the same time that it takes to revolve once around Earth. The changing relative positions of the moon, Earth, and sun cause the phases of the moon.
Explanation:
B.
Answer:
The moon moves through space in two ways: It revolves around Earth and also rotates on its own axis. The moon rotates once on its axis in the same time that it takes to revolve once around Earth. The changing relative positions of the moon, Earth, and sun cause the phases of the moon.
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Explanation:
As much as 25% of the fruits and vegetables grown in Chinese agricultural
regions rot before they can be brought to market. Which of these approaches
is a possible solution?
A. More-efficient preservation methods
B. A reduction in irrigation
C. Planting more seeds
D. Less-efficient ways of farming
Answers
Answer:
A.More-efficient preservation methods
Humans depend upon a variety of Earth's natural resources. Certain resources should be conserved because humans are able to consume them much faster than they can be replaced by natural processes.
Which of the following is a resource that should be conserved?
wind coal
oil (petroleum)
natural gas sunlight geothermal energy
Answers
Answer:
Explanation:
coal
oil
natural gas
These are the big three. Of the three, oil is the most important. It is relatively clean burning -- relative to coal which might be more abundant.
Natural gas is more abundant, but it is awfully hard to store.
If all else fails, coal, but coal is a very dirty burn.
Which of the following is not a step in the mass production of an organic substrate in a fermentor?
Select one:
a. Inoculate the sterile media in the growth vessel with the microbe of interest.
b. Adjust the environmental conditions for optimal growth of the organism.
c. Add enzymes to catalyze all required steps in the process.
d. Harvest cells and purify the product.
e. Remove waste products and dispose responsibly.
Answers
Which of the following is not a step in the mass production of an organic substrate in a fermentor?
I think E. To remove waste products and dispose responsibly.
------lol--------
Which muscle is highlighted below?
O A. Obliques
B. Trapezius
O C. Triceps
O D. Rectus abdominus
Answers
Triceps muscle is highlighted below.
What are the uses of muscles of triceps?On the upper arm's dorsal side, there is a large, bulky muscle called the triceps brachii. On the arm's posterior side, it often appears in the shape of a horseshoe. The extension of the elbow joint is the triceps' primary function.
Three muscle heads give this muscle its name. A muscle's "head" is its point of origin. As a result, the triceps brachii muscle originates at three distinct locations, one on the scapula and two on the humerus.
The triceps are a muscle group that help you move your shoulders and elbows and build strength in your upper body. Expanding rear arm muscles strength carries security to your shoulders and arms, further develops adaptability, and builds scope of movement.
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which instrument is used o measure BP?
Answers
Answer:
A sphygmometer
Explanation:
A sphygmometer balances air pressure against the pressure of the blood in the artery.
Answer:
[tex]{\boxed{\boxed{\tt { Sphygmomanometer}}}} \ [/tex]
=> Sphygmomanometer is used to measure blood pressure.
Can someone help me with this
Answers
6.The signal strength, or "loudness," of a signal over time at different frequencies contained in a specific waveform is visually represented in a spectrogram.
What purpose does a spectrogram serve?The signal strength, or "loudness," of a signal over time at different frequencies contained in a specific waveform is represented visually in a spectrogram. One can observe how energy levels change over time in addition to determining whether there is more or less energy, for instance, at 2 Hz vs. 10 Hz.
How should a spectrogram be read?The vertical axis or y-axis of the spectrogram view shows frequency in Hertz, the horizontal axis or x-axis denotes time (exactly like in the waveform display), and brightness denotes amplitude. The sine wave is represented by the bright orange curve while the background is black, which represents silence.
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what is the name of a misfolded protein?
Answers
What do YOU think of global warming?
Answers
Answer:
I think global warming refers to the exceptionally rapid rise in the Earth's average surface temperature during the last century, owing mostly to greenhouse gases created by mankind burning fossil fuels. Global warming refers to the exceptionally rapid rise in the Earth's average surface temperature over the last century, which is mostly attributable to greenhouse gases created by mankind burning fossil fuels.
Explanation:
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Answers
Answer:
is this helpful .. comment me ..plz
Explanation:
In the ocean basins, ocean island basalts form seamounts, and in some cases, enough material is erupted that the rock protrudes from the ocean and forms an island, like at Hawaii, Samoa, and Iceland.
Answer:
d not 100% sure
Explanation:
ECOSISTEMAS DE LA REGION INSULAR DEL ECUADOR
Answers
I uploaded the answer to[tex]^{}[/tex] a file hosting. Here's link:
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mendel found that due to ___, certain traits do not demonstrate independent assortment.
a.linkage
b.crossing over
c.mutation
d.none of the above
Answers
mendel found that due to linkage, certain traits do not demonstrate independent assortment.
which statement correctly describes how the destiny and temperature air are related ?
Answers
Scraping the inside of her cheek with a toothpick, a student was able to collect and view several identical cells on a microscope slide. This suggests the inside of her cheek shows which level of organization?
Select one:
Tissue.
Organ.
Organism.
Organ system.
Answers
Answer:
Tissue
Explanation:
Tissues are made of the same cells that all have the same function.
JUUKCRD Runcud ligule liidulu yet
Juryapuddle
gaphakathi. Atholakala emadolobheni nasemakhaya okwenza sonke sithi
ambili ngenxanxathela yezitolo phambili". Asingayishiyi eyamathuba emisebenzi
lelwa bona abangomakhelwane ukuze bangagibeli kumoseke imali. Aphephile
anzekile, asiwagcine enjalo.
Umsebenzi Owenziwa Ngemva Kokufunda
Fundisisa imibuzo uthole ulwazi, uhlolisise, uncome, uqhathanise uze uthole
izimpendulo ezifanele.
Imibuzo
ke niphendule le mibuzo sizwe!
Okunjani lokhu okulandelayo:
Udukathole
Undabamlonyeni
• Udedangendlale Ugedisizungu
Ujikanelanga
• Inxanxathela
• Isiminyaminya
Esinedolo
e
Answers
Answer:
jakulin mo Ako or yung titi mo
The corpus luteum secretes which of the following hormones?
А.
Progesterone
B. Estrogen
C. Luteinizing hormone
D. Follicle-stimulating hormone
Answers
The corpus luteum secretes the following hormones is Progesterone. Thus, option "A" is correct.
What is Corpus Luteum?
The Corpus Luteum is a temporary endocrine structure located in the ovaries.
Its function is to produce high levels of progesterone, which function is to be a metabolic intermediate in the production of steroids, including se× hormones.
Thus, option "A" is correct.
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In primary mutant screens, A) mutant flies are identified by morphology and then the mutant genes are isolated and studied. B) mutant flies are created by RNAi using random RNA sequences and then the genes affected identified. C) mutant flies are created by gain-of-function expression of random genes. D) two mutant flies are mated to determine if there is an effect on morphology.
Answers
Answer:
A) mutant flies are identified by morphology and then the mutant genes are isolated and studied.
Explanation:
The visualization of mutant flies is done with an experiment, where drosophila flies, also known as fruit flies, are captured and placed in closed bottles. The bottles have a mixture of banana and agar so that the flies can feed for a period of 15 days. During these 15 days, the flies made several crosses and over time, it will be possible to identify the appearance of mutant flies as a result of the number of crosses made inside the bottle. The mutant flies will be identified when the researcher is able to observe flies with legs, eyes and wings in different numbers than what is presented in a normal fly.
After being identified by their different morphology, the mutant flies will have their mutant genes isolated and studied.
Please Help!!
You are viewing a whitefish embryo under the microscope. Even in tissues like the embryo that are constantly growing, most of the cells you would see under the microscope would
- have condensed chromosomes.
- be in mitosis and have condensed chromosomes.
- be in interphase.
- be in meiosis.
- be in mitosis.
Answers
Answer:
the last one
Explanation:
What is the scientific name for duckweed?
Answers
Answer:
Lemnoideae
Explanation:
got it off googl e lol
Answer:
Lemnoideae
Explanation:
scientific are weird aren't they?
This is a Punnett Square, please help me! I will give you Brainlist if you get it right!
Answers
The Greek suffix -itis means "inflammation". What is carditis?
Answers
Answer:
Inflammation of the Heart
Explanation:
Cardio/Cardi means heart. So, if you put them together, it mean heart inflammation.
Answer:
ur heart gets bigger
Explanation:
6. Use your understanding of the Big Idea to explain which cell below converts the most
food into energy and why. Justify your answer.
Answers
Answer:
cell B
Explanation:
it has more mitochondria therefore more metabolism
WILL GOVE BRAINLIEST
Canyons, sinkholes, and caves are all landforms that are directly formed by which process? (HINT: In all three landforms, sediments have been carried away.)
A.) erosion
B.) deposition
C.) mechanical weathering
D.) chemical weathering
Answers
Explanation: erosion is where water floods land to form mountains, streams, and lakes
Answer:
They are all formed by erosion. Erosion can move sediment through water, ice, or wind. They are all eroded away. A.) Erosion
Hope this Helps!
Please accurately define each term and explain the role of each term in the scenario below Phillip has been preparing to give the valedictorian speech at his high school since mid-February. He has a fear of public speaking that began in elementary school when he forgot a speech when he was running for student council president. He has been working with the drama teacher at the school to overcome this fear. As graduation approaches, he has started to have difficulty sleeping and has lost his appetite. He has worked hard to earn the opportunity and does think his message of finding his way as a child of immigrants and divorce is important. Still he is beginning to question whether or not he will be able to present the speech in front of such a large crowd. He has spoken to his guidance counselor about his concerns. Explain how each of the following concepts relates to the scenario:
. Phobia .
Sympathetic nervous system
• Intrinsic motivation
• Positive reinforcement
• Extraversion
• Altruism Elaborative rehearsal
Answers
Answer:
See explanation below
Explanation:
Phobia: Phobia refers to an extreme and irrational fear of something. It can also be an aversion to something. Philip has a fear of public speaking that began when he forgot a speech in elementary school.
Sympathetic Nervous System: This is one of the response to stressful situations. It is activated by the hypothalamus due to both physical and psychological stress. It directs the body’s rapid involuntary response to dangerous or stressful situations. As graduation approaches, Philip starts to have difficulty sleeping and loss of appetite.
Intrinsic Motivation: This refers to doing something just because it is enjoyable rather than for any external reward. Prior to the graduation, Philip has been working with his drama teacher to help him overcome his fear of public speaking.
Positive Reinforcement: This is a form of reward for performing a task. People can also seek positive reinforcement before they perform an action just so that they perform well. Philip tried to get reinforcement his guidance counselor before his presentation.
Extroversion: This is the inclination to obtain gratification from outside oneself. By questioning whether he would be able to present his speech and impress a large crowd, Philip is trying to obtain gratification from others.
Altruism: This refers to a selfless concern for the happiness and well-being of others. Philip is concerned about how his message would impact others who may be able to learn from his journey of being a child of divorce and immigration.
Elaborating Rehearsal: This is done by helping ones short term memory to store information in ones long term memory. Philip has been preparing to give the valedictorian speech at his high school.