its B let me know if I'm right!
how many joules of energy are required to vaporize 423 gram of water at 100 degrees Celsius and 1 atm?
Final answer:
It takes 951,750 joules of energy to vaporize 423 grams of water at 100 degrees Celsius and 1 atm, as the heat of vaporization of water is about 2,250 J per gram.
Explanation:
To determine how many joules of energy are required to vaporize 423 grams of water at 100 degrees Celsius and 1 atm, we use the heat of vaporization of water, which is about 2,250 J per gram. The calculation is straightforward: we simply multiply the amount of water in grams by the heat of vaporization per gram.
Energy required (Q) = mass of water (m) × heat of vaporization (ΔHvap)
Q = 423 g × 2,250 J/g
Q = 951,750 J
Therefore, it takes 951,750 joules of energy to vaporize 423 grams of water at 100 degrees Celsius and 1 atm.
. How many electrons are in the n = 2 shell of the oxygen atom before bonding? eight electrons 2. What is the maximum number of electrons an oxygen atom can hold in its outer energy level? ten electrons 3. How many total electrons are there in a water molecule? two bonds 4. How many electrons are being shared between the atoms in this molecule? four electrons 5. How many bonds exist in this molecule? six electrons
Okay here is the answer you are looking for
1.) 6 electrons are in the n=2 shell
2.) 8 is the maximum number an oxygen atom can hold in its outer shell
3.) 10 is the total number of electrons there are in a water molecule
4.) 4 electrons are being shared between the atoms
5.) two bonds exist in this molecule.
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Atoms gain stability by fulfilling the octet rule; oxygen and hydrogen share electrons in water for a full valance shell. Sodium donates its single valence electron to chlorine, resulting in a sodium ion (Na+) and a chloride ion (Cl-).
Explanation:The stability of atoms in molecules is explained by the octet rule, which ensures that atoms are most stable when their valence shell contains eight electrons. In the formation of a water molecule, oxygen atom, with six electrons in its valence shell, shares two pairs of electrons with two hydrogen atoms that each share their single electron. By doing this, all participating atoms fulfill the octet rule, achieving a full outer energy level and hence stability.
Sodium has one electron in its valence shell, while chlorine has seven. When sodium and chlorine bond to form sodium chloride, sodium donates its one electron to chlorine. As a result, sodium bears a positive charge, becoming a sodium ion (Na+), and chlorine gains an extra electron, becoming a negatively charged chloride ion (Cl-).
Describe three values that the biosphere provides
The biosphere is as important as life itself because it is all of life. Without the biosphere, the Earth would be a lifeless planet such as Mars or Venus.
Three main values of biosphere are;
Conservation Development Logistic Support.Biosphere reserves help ensure the environmental, economic, and social sustainability of the region, by encouraging wise use of natural and human resources. They provide practical ways to resolve land use conflicts and to protect biological diversity.
The biosphere provides provisioning, regulating, and cultural values. It offers resources like food and water, aids in regulating climate conditions via nutrient cycles, and holds psychological and moral value due to biodiversity.
Explanation:The biosphere, which includes all the parts of Earth inhabited by life, provides numerous values that sustain and enrich life on our planet.
Provisioning Services: The biosphere produces various helpful resources, like food and water. For instance, oceans are occupied by photosynthetic organisms that form the base of aquatic food chains. Other ecosystems on land play crucial roles in water purification. Regulation Services: The biosphere also plays a vital role in regulating climate conditions. For example, different ecosystems participate in cycles of mineral nutrients (such as carbon, nitrogen, phosphorus) which are essential for maintaining the structure and function of ecosystems. Cultural and Psychological Services: The biosphere has significant psychological and cultural values. Natural environments can be psychologically beneficial to humans, providing regenerative benefits and stress relief. There is also an ethical argument that biodiversity and the health of the biosphere should be maintained for its inherent moral value.Learn more about Biosphere Values here:
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When were Earth’s landmasses first recognizable as the continents we know today?
a) 10 million years ago
b) 135 million years ago
c) 180 million years ago
d) 300 million years ago
Answer:
135 million
Explanation:
took the test
If a element has 11 protons , what else is 11?
How do naturalists explain order design and function in the biosphere? How should a Christian respond to this order
Naturalists basically describe the idea or the concept of naturalism which we mean that this is the belief that all the existing material matter, that there is no before-mentioned thing as a soul and that people have no purpose in life. The natural perspective of the biosphere is that the biosphere is what we loosely call nature. All sciences eventually study nature. Natural sciences focus on how species live together, as well as the importance of inanimate objects and patterns.
(Answer 2 points 3)Here are some o the points of a content that Christians must keep in mind:
Naturalism is developed completely on a basis of belief. Naturalism cannot prove that there is no spiritual existence. It cannot consider for: the final existence of matter, the presence of life, the actuality of consciousness, or for how different lifestyles, modes or forms came into being. Their statements in all of these areas are not based on science.
Which situation would be most likely to cause a dna mutation? A. A maple tree becomes dormant to prevent water loss during a drought. B. A culture of cells is placed in a chamber and exposed to high pressure for 10 hours. C. A wood frog in a lake is exposed to temperatures below 0°c during the winter months. D. A person spends one hour each day under the ultraviolet rays of a tanning bed.
The correct answer is option D, that is, a person spends one hour each day under the ultraviolet rays of a tanning bed.
The UV, or ultraviolet light from the sun, us a non-ionizing radiation that can cause DNA mutations. It does this by making the formation of pyrimidine dimers. Direct destruction of DNA can take place when DNA directly absorbs a UVB photon.
The UVB light makes thymine base pairs next to each other in the genetic arrangements to combine together in the pyrimidine dimers. It has been shown that the patches of skin chronically exposed to sunlight exhibit up to 10 times more cancer-producing gene mutations in comparison to the skin, which is usually safeguarded from the sun.
Answer:
hi its D: a person spends one hour each day under the ultraviolet rays of a tanning bed
Explanation:
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What is the purpose of cellular respiration?
remove carbon dioxide
produce glucose
produce usable energy - ATP
make oxygen
Cellular respiration is a process in Biology that primarily aims to create ATP or usable energy. While doing so, it releases carbon dioxide as a byproduct. It does not directly produce glucose or oxygen.
Explanation:The main purpose of cellular respiration is to convert the biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. ATP is often called the 'energy currency of life' and it is the high-energy molecule that stores the energy we need to do just about everything we do. In the process of creating ATP, cellular respiration also produces carbon dioxide as a waste product that organisms expel when they breathe.
It's important to note that cellular respiration doesn't directly create glucose or oxygen. In fact, glucose is a fuel source used by cells in the process of cellular respiration, while oxygen acts as an electron acceptor in the final stage.
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the excretory organs found in flat worms and earthworms are called
Flatworms possess excretory organs known as nephridia. Specifically as annelids, flatworms possess a variant known as metanephridia.
answer: they are called nephridia :)
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Many macromolecules are made of component pieces, attached together into long chains. Which of the following correctly pairs one of the four macromolecules with its component Piece?
A) RNA; protein
B) lipid; amino acid
C) protein; nucleic acid
D) complex carbohydrate; simple sugar
Answer: D complex carbohydrate; simple sugar
Explanation:
The 4 macromolecules are Proteins, lipids, nucleic acids and carbohydrates.
The component piece for each are as follows:
Protein = amino acid
Nucleic acid = nucleotides
Lipids = fatty acids, glycerol
Complex carbohydrates (polysaccharides) = simple sugars such as glucose
The thylacine is an extinct marsupial that once roamed Tasmania and Australia. There are several preserved specimens in existence. Which of the following DNA technologies offers the best chance for bringing back the thylacine?
The best chance for bringing back the extinct thylacine involves de-extinction technologies like cloning and genetic engineering, utilizing DNA from preserved specimens and a surrogate host from a related species.
Explanation:The thylacine, an extinct marsupial that once lived in Australia and Tasmania, might potentially be brought back using advanced DNA technologies. The best chance for resurrecting the thylacine lies in de-extinction technologies such as cloning and genetic engineering. These technologies would involve extracting DNA from preserved specimens, repairing any damage using the genetic material of a closely related species like the Tasmanian devil, and then gestating the embryo in a surrogate host. Although the process is complex and has many ethical and technical challenges, it represents the most feasible method currently envisioned for attempting to bring back an extinct species like the thylacine.
List and describe the five environmental spheres of earth.
The following are the five major spheres of the Earth:
1. Geosphere: It comprises Earth's mantle, crust, and core, that is, the solid proportion of the Earth.
2. Biosphere: It comprises all the species on Earth, as well as, the environments in which they thrive.
3. Atmosphere: It comprises the gases surrounding the Earth.
4. Cryosphere: It comprises the ice sheets of Earth as well as the environments in which they thrive.
5. Hydrosphere: It comprises the water in Earth's seas, oceans, glaciers, rivers, lakes, and atmosphere.
What type of bonding is responsible for water's' ability to absorb some much heat?
i believe the answer is hydrogen bonding
the answer is hydrogen bonding
What happens to the volume, mass, and density of most solids as their temperature increases?
When the temperature of most of the solids is increased, their volume is also increased.
But their mass remains constant because volume change does not affect the mass of the solid.
The density of solids will change because of volume change.
As density = mass/ volume.
According to the above equation volume and density are inversely proportional.
So increase in volume and constant mass will decrease the density of solid.