Which sentence describes the energy changes that take place when this
chemical reaction occurs?
ca + mgcl2 - mg +cacl2
o a. energy is absorbed to break bonds in mgcl, and to form bonds in
cacl2
b. energy is absorbed to break bonds in mgcl2 and released when
the bonds in cacl, form.
c. energy is released when bonds in mgcl2 break and when bonds in
cacl2 form
o d. energy is released to break bonds in mgcl, and absorbed when
the bonds in cacl2 form.
Answers
Energy is absorbed to break bonds in mgcl, and to form bonds in cacl2. Thus, the correct option is A.
How do chemical reactions occur?The transformation that takes place in substances, wherein atoms rearrange themselves and alter their initial state, is what gives rise to chemical processes. As a result, chemical compounds alter and produce new molecules.
A replacement reaction is the sort of reaction implied by the chemical formula Ca + MgCl2 --- CaCl2 + Mg.
In this instance, energy is absorbed during the chemical reaction to break bonds in the reactants and build bonds in the products.
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Related Questions
How does marsh rabbit survival and cause of death differ in areas with and without pythons?
(PLEASE ANSWER CORRECTLY)
THANKS <3
Answers
Pythons compete with native wildlife for food, which includes mammals, birds, and other reptiles. Severe mammal declines in Everglades National Park have been linked to Burmese pythons.
What are the characteristics of pythons?Python is a genus of constricting snakes in the Pythonidae family native to the tropics and subtropics of the Eastern Hemisphere. The name Python was proposed by François Marie Daudin in 1803 for non-venomous flecked snakes.
According to the pressure reading, the snake generated almost 300 millimeters of mercury or just under 6 pounds of pressure per square inch (psi) during constriction. “There's a myth that they squeeze their prey until they can't breathe anymore, but that's not accurate.
Pythons can't move very fast though—only about 1 mile per hour (1.6 kilometers per hour) on open ground. But since they don't have to chase their food, they don't really need to move quickly.
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If you were traveling from Monterey on the California Coast to visit Yosemite National Park, on the eastern side of the state, what three major land forms would you pass through? (in order)
A) The Klamath Mountains, the Cascade Range and the Modoc Plateau.
B) The Transverse Ranges, the Mojave Desert and the Great Basin.
C) The Coast Ranges, the Central Valley and the Sierra Nevadas.
D) The Central Valley, the Sierra Nevadas and the Great Basin.
Answers
The Sierra Nevada and Coast Mountain Ranges fall and elevate by a few millimeters each year. As a result of winter rains and summer groundwater pumping in California's Central Valley. Thus, option C is correct.
What three major land forms in California?According to calculations by a group of geophysicists, gradual depletion of the Central Valley aquifer caused by groundwater pumping also raises these mountain ranges by a comparable amount each year.
Roughly the thickness of a dime—with a cumulative rise over the past 150 years of up to 15 centimeters (ca. 6 inch).
Therefore, The Coast Ranges, the Central Valley and the Sierra Nevadas. putting stress on the state's faults and raising the possibility of an earthquake.
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why is resource partitioning advantageous for species that would otherwise compete for the same realized niche
Answers
Resource partitioning is advantageous for species because there is less competition among species and they coexist.
If one or both of the species that are competing evolve to use a different resource, occupy a different area of the habitat or feed at different times of the day, then competitive exclusion may be avoided. The fact that two similar species use resources that do not overlap much means that their respective niches have become distinct as a consequence of this type of evolutionary process.
This practice, known as resource partitioning, makes it easier for different species to coexist by reducing the amount of direct competition that exists between them.
An excellent illustration of resource division can be seen in the anole lizards that are native to the island of Puerto Rico. Within this group, different species have developed as a result of natural selection; these species make use of various resources in their environment.
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Which property of water is most responsible for water moving from the roots to the leaves of a plant?.
Answers
Capillary action is the property of water is most responsible for water moving from the roots to the leaves of a plant.
What is Capillary action?Capillary action is the process by which liquids flow in a confined space without support or against external forces such as gravity.Examples of capillary action include the absorption of water by Paris paper and gypsum (two porous materials), the absorption of paint between brush bristles, and the movement of water through sand.This is caused by intermolecular forces between the liquid and the surrounding solid surface. If the tube diameter is small enough, a combination of surface tension (caused by cohesive forces within the liquid) and adhesive forces between the liquid and the vessel wall act to propel the liquid.Cohesion: It is an intermolecular bond of matter that maintains a certain liquid shape due to mutual attraction.Surface tension: This occurs as a result of cohesive forces like molecules binding together to form a surface that is fairly impermeable to water bodies.To learn more about Capillary action from the given link :
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What blood system is often tested to either establish or dispute paternity? A. HLA B. ABO C. Rh D. Duffy
Answers
Testing of HLA blood cells is frequently used to confirm or refute paternity. through the use of several red cell epitope systems and the incorporation of more research on various blood types.
What do blood cells do?The major job of the red blood cell is to transport oxygen from our lungs and distribute it all throughout our body. Moreover, red blood cells carry wastes like atmospheric co2 back to the lungs for exhalation.
Why do blood cells form?Your bone marrow, a spongy substance located inside the spaces of a number of your big bones, is where the majority of red blood, particularly red blood cells, is regularly created. Your body requires iron, vitamin B-12, folate, or other minerals from the foods you eat to make hemoglobin and red blood cells.
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Grasshoppers eat
Haws consume
Where do deer get their energy
Deer get eaten by
Snake get eaten by
Squirrels are consumed by
Predict what would happen to the following population in the ecosystem if all rabbits died
The number of shrubs would
The number of mountain lions would
The number of deer would
Predict what would happen to the animals ecosystem if all lions died from a disease
Answers
Answer:
Grasshoppers get eaten by Shrews and Insect-Eating birds.
Hawks consume squirrels, shrews, Insect-Eating birds, and snakes.
Deer get their energy from shrubs and trees.
Snakes get eaten by Mountain Lions and Hawks.
Squirrels are consumed by hawks.
If all the rabbits died, there would likely be a decrease in the amount of snakes and Mountain Lions because there are no rabbits available to eat.
The number of of shrubs would increase because rabbits won't be feeding on them.
The number of mountain lions would decrease because there are no rabbits to eat.
The number of deer would increase because there are more shrubs available for them to eat.
If all the Lions died, the amount of deer, snakes, shrews, and rabbits would increase because there are no longer mountain lions to eat them.
Explanation:
a farmer wants to know which will allow his plants to produce the most food. he gave no fertilizer to 10 plants fertilizer a to 10 plants and fertilizer b to 10 plants. all of his plants were the same were planted in the same soil and we given the same amount if water after six weeks the farmer weighted the total amount of food produced by each group
Answers
Answer:
It depends on the optimum dosage of NPK.
Explanation:
The farmer gain more productivity from that type of fertilizer which have optimum dosage of nitrogen, phosphorus and potassium fertilizers because these three fertilizer needed by the plant in large quantity and having great contribution in the yield of plant so if ''fertilizer a'' has optimum dosage of these three nutrients so we can say that ''fertilizer a'' produces more food as compared to no fertilizer and ''fertilizer b'' whereas if ''fertilizer b'' has optimum dosage of these nutrients so ''fertilizer b'' produces more food.
Describe the two phenomena (sub-problems) that caused the contamination of Cleveland
drinking water.
Answers
Answer:
So you can give the other person brainliest
Explanation:
What does it mean when a
cell has an infection?
A. An invader is kept out of the cell by
the cell membrane.
B. An invader has been denied entry
into the cell by the cell membrane.
C. An invader has found its way into
the cell.
Answers
Answer:
C
Explanation:
If the invader was outside the cell, it wouldn't be infected.
Arrange in order the steps involved in the changes that occur during puberty.1. Triggering of GnRH by the hypothalamus2. Movement of GnRH through a network of capillaries to the anterior pituitary gland3.Stimulation of production and secretion of FSH and LH4. Stimulation of the gonadal response
Answers
The changes that occur during puberty. Here's the correct order of the steps involved Triggering of GnRH by the hypothalamus: The process begins when the hypothalamus, a part of the brain, starts producing and releasing gonadotropin-releasing hormone (GnRH).
The Movement of GnRH through a network of capillaries to the anterior pituitary gland: GnRH then travels through a network of blood vessels called capillaries, reaching the anterior pituitary gland.
Stimulation of production and secretion of FSH and LH: The anterior pituitary gland responds to GnRH by producing and secreting two important hormones, follicle-stimulating hormone (FSH) and luteinizing hormone (LH).
Stimulation of the gonadal response: FSH and LH stimulate the gonads (testes in males and ovaries in females) to produce sex hormones (testosterone in males and estrogen and progesterone in females) and initiate the physical and emotional changes associated with puberty.
In summary, the steps involved in puberty include the release of GnRH by the hypothalamus, its travel through capillaries to the anterior pituitary gland, stimulation of FSH and LH production, and the resulting gonadal response.
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What vector does the corona virus use to get from host to host?
Answers
Answer:
The c
Explanation:
this is not biology by the way its Science.
Question:Low viscosity lava is?
a.less runny.
b.more runny.
c.of more density.
d.of less density.
Please Help Me Figure it Out
Answers
Answer:
b
Explanation:
\(\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}\)
d. of less density
I'm quite sure it correct...
Urey and Miller cooked a "Primordial soup" with Hadean gases, water and electricity to make ___, ___, ___, and ___.
Answers
Answer:
Urey and miller cooked a "primordial soup" with Hadean gases, water and electricity to make glucose, acetic acid, amino acids and lipids.
Explanation:
In the Miller-Urey experiment, the aim was to reproduce the conditions of the earth before the existence of life, with the objective of demonstrating the formation of organic matter from inorganic molecules.
The scientists took water and gases present in the Hadean eon —previous to the existence of life— such as methane, carbon dioxide, hydrogen, nitrogen and even ammonia, the primordial soup. This mixture was subjected to electrical discharges, inside closed containers.
The results were some organic molecules, including glucose, acetic acid, amino acids and fatty acids. In these results the presence of macromolecules, such as proteins or nucleic acids, is not appreciated, however it was a significant contribution to the knowledge of the origin of life on earth.
is a process that involves the collection of information and ideas supported by belief or opinion.
Answers
Answer: Pseudoscience
Explanation:
it involves statements, beliefs, or practices that are claimed to be both scientific and factual but are not in relationship with the scientific method
Answer:pesudoscience
Explanation:it is
give any two properties of soil
Answers
Answer:
Explanation:
The most important properties of soil are there texture and structure
The attributes that can be arranged into hierarchy are cal'
Select one:
a. Simple attributes
b. Derived attributes
c. Atomic attributes
d. Composite attributes
15. Relational model eases the job of the programmer, compared to earlier data models such as Select one:
a. Both Network and Hierarchical
b. Network model
c. Hierarchical model
d. Semistructured model
16. The set of values which specifies which values are to be assigned to individual entities is considered as
Select one:
a. Derivation of values
b. Composition of values
c. Attribution of values
d. Domain of values
17. The structuring of database by specifying the types and constraints of data is classified as
Select one:
a. Analyzing a database
b. Filtering a database
c. Creating a database
d. Defining a database
18. The relational model is today the primary data model for commercial
Select one:
a. Data program application
b. Data processing applications
c. Data management applications
d. Data storage applications
19. The function which causes the retrieval of any kind of data from database is considered as
Select one:
a. Storing cycle
b. Structure
c. Query
d. Key
20. In relational database schemas, the transition constraints are also known as
Select one:
a. Explicit constraints
b. Implicit constraints
c. Static constraints
d. Dynamic constraints
21. The form of data model in which the concepts provided are useful for end users and are also close to the way it is stored in computer system is called
Select one:
a. Representational data models
b. Clientele data models
c. Implementation data models
d. Both representational and implentation data
models
22. The form of data model which focuses the concepts in the same way as the data stored in computer system is classified as
Select one:
a. Medium level data models
b. Dynamic data models
c. High level data models
d. Low level data models
23. The key that uniquely identifies each record is called
Select one:
a. Field name
b. Key record
c. Unique key
d. Primary key
24. The key that uniquely identifies each record is called
Select one:
a. Field name
b. Key record
c. Unique key
d. Primary key
Answers
The attributes that can be arranged into hierarchy are composite attributes. A composite attribute, as the name suggests, is composed of multiple atomic or simple attributes.
The attributes that cannot be split into simpler attributes are called atomic or simple attributes. Composite attributes. A composite attribute is one that is made up of two or more atomic attributes. The reason for grouping the attributes together is so that the users can understand the attributes better. Relational model eases the job of the programmer, compared to earlier data models such as both Network and Hierarchical.
Network and Hierarchical models were replaced by the Relational model due to its limitations. As opposed to the Network and Hierarchical models, which have restrictions on the way data is stored, the Relational model provides more flexibility and simplifies the programmer's work. The set of values which specifies which values are to be assigned to individual entities is considered as Attribution of values.
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Use the diagram below to answer the following questions for 1 point each:
1. Identify ONE similarity between mitosis and meiosis.
2. Identify ONE difference in the results of mitosis and meiosis.
3. Identify ONE difference in the processes of mitosis and meiosis.
Answers
1. They both involve duplication of a cell's DNA content.
2. Mitosis is for asexual reproduction and meiosis is for sexual reproduction.
3. Mitosis produces 2 cells and meiosis produces 4.
Meiosis and Mitosis both are the cell divisions which involve karyokinesis followed by cytokinesis. Meiosis is different from mitosis in the ploidy of the offspring produced. Meiosis involves 2 divisions whereas mitosis involves only one division. Four daughter cells are produced through meiosis whereas only two are formed from mitosis.
What is Mitosis and Meiosis?Cell division occurs in a cell through two processes which include Mitosis and Meiosis. Generally, all the cells undergo mitotic division whereas meiosis occur in the organisms which reproduce through sexual mode of reproduction.
Mitosis is the process through which a single parent cell divides to make two new daughter cells which contains equal amount of genetic material as that of their parents. Thus, called as equational division. Here, each of the daughter cell receives a complete set of chromosomes from the parent cell.
Meiosis is a special type of cell division also called as reductional division. This division occurs in the germ cells in the organisms which reproduce through sexual mode of reproduction for the production of gametes, such as sperm or egg cells. These gametes are haploid in nature as they receive only half of the set of chromosomes from the parent cell. Meiosis involves two rounds of divisions which ultimately result in the formation of four cells with only one copy of each chromosome.
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HELP What does the color indicate about the strength of the acid or base?
Answers
Answer:
yellow to red is an acidic solution
blue to violet is bases
green color is a solution is neutral
Explanation:
nerve impulses are transmitted only along exposed portions of an axon. t/f
Answers
Nerve impulses are transmitted only along exposed portions of an axon. The given statement is true this is due to the myelin sheath, which covers some axons and acts as an insulator.
The myelin sheath is made up of Schwann cells in the peripheral nervous system and oligodendrocytes in the central nervous system. These cells wrap around the axon, leaving gaps called nodes of Ranvier. It is at these nodes that the nerve impulses can be transmitted. The myelin sheath serves to increase the speed and efficiency of the nerve impulses by allowing them to jump from one node to the next in a process called saltatory conduction.
However, if the myelin sheath is damaged or degraded, nerve impulses may no longer be restricted to the nodes of Ranvier and can travel along the entire length of the axon, resulting in slower and less efficient transmission. So therefore the given statement nerve impulses are transmitted only along exposed portions of an axon is true this is due to the myelin sheath, which covers some axons and acts as an insulator.
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will mark Brainliest!!!!!! To corroborate information is to?
find evidence that opposes a scientific position.
find evidence that supports a scientific position.
find evidence that proves a scientific position.
find evidence that disproves a scientific position.
Answers
The most correct option as to what corroborating information means would be to find evidence that supports a scientific position.
Corroborate is an English word that means 'to agree with' or 'give credence to'.
Hence:
Finding evidence that opposes a scientific position is a wrong option because that is the complete opposite of what corroborate means. Finding evidence that approves a scientific position is also a wrong option because corroborating a statement does not necessarily make the statement to be scientifically correct.Finding evidence that disproves a scientific position is also incorrect. Corroborate neither translates to approve nor disprove,Therefore, the correct option that clearly explains what corroborate means in the context of science is to find evidence that supports a scientific position.
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Each transfer RNA has a sequence complimentary to the codon known as the:
Select one:
a. retrocodon
b. anticodon
c. negacodon
Answers
The correct answer is anticodon which is in option b.Each transfer RNA (tRNA) molecule contains a specific sequence of nucleotides called an anticodon. The anticodon is a region of the tRNA that is complementary to a specific codon on messenger RNA (mRNA) during protein synthesis.
The pairing between the anticodon of the tRNA and the codon on the mRNA is crucial for accurate translation of the genetic code. The anticodon binds to the codon through base pairing, following the rules of complementary base pairing in DNA and RNA. This binding ensures that the correct amino acid is added to the growing polypeptide chain during protein synthesis.
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during what phase of the cell cycle does the cell prepares for Mitosis?
Answers
Answer:
interpahse
Explanation:
A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division
Answer:
during interphase......
What three factors determine a person skin color?
Answers
Answer:
Melanin- Inside of Stratum Basale, yellow, brown, black made by melanocytes
Hemoglobin- Dermis capillaries create red from blood cells.
Carotene- Pigments colored yellow/orange.
When you change the amounts of greenhouse gases in the atmosphere, which factor(s) do you expect to change? (Circle your answer/answers.)
Heat flow in
Heat flow out
Temperature
Answers
Answer:
B-Heat flow out
Explanation:
When you change the amount of greenhouse gases the factor you expect to change is Heat flow out.
What is greenhouse gases?
The main greenhouse gases whose concentrations are rising are carbon dioxide, methane, nitrous oxide, hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs) and ozone in the lower atmosphere.
How many greenhouse gases are there?
There are ten primary GHGs; of these, water vapor (H2O), carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are naturally occurring.
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When streaking a throat culture on blood agar, stabbing the agar plate provides detection for Streptolysin O Bile solubility Streptolysin S DNase activity 100
Answers
When streaking a throat culture on blood agar, stabbing the agar plate provides detection for Streptolysin O. The stabbing method is also called the puncture method, and it helps in determining Streptococcus pyogenes' hemolytic activity.
Streptococcus pyogenes produces two hemolytic toxins, streptolysin O (SLO) and streptolysin S (SLS). These toxins are necessary for establishing an infection.
The throat culture on blood agar plate is used to diagnose a throat infection. The process of inoculation involves streaking and stabbing.
Streaking is performed by moving the swab back and forth over the surface of the agar. It helps in identifying the colonies that have formed on the agar's surface.
On the other hand, stabbing is done by inserting the swab into the agar medium and then withdrawing it. It is useful for detecting the presence of hemolytic toxins.
In case of streptococcal infection, the throat culture is used to detect SLO activity. SLO causes beta-hemolysis, which is visible as a clear zone around the colonies.
By stabbing the agar plate, the SLO remains within the colony, resulting in no hemolysis around the colony. However, if the colonies are streaked on the surface, SLO diffuses out of the colony, causing beta-hemolysis.
Therefore, by stabbing the agar plate, it helps in detecting SLO activity.
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A) If a female spinach plant with green (GG) leaves is crossed (pollination and fertilization occur) with a male spinach plant with purple (gg) leaves. What are the genotypes of the offspring and what traits will they express including the probability or ratio.
Answers
Answer:
The genotype Ratio is 1. All are Gg.
The phenotype is all Green spinach
Explanation:
Punnett Square:
G G
_________________
g | Gg | Gg |
|________|________ |
g | Gg | Gg |
|________|________ |
The genotype Ratio is 1. All are Gg.
The phenotype is all Green spinach
Which of the following BEST defines a right?
A.
something that is owed to anyone through just claim or legal guarantee
B.
a benefit that is earned that allows someone to do something
C.
something that is denied to every citizen
D.
a benefit that is denied to those who do not obey the law
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
The answer I B thank
Explanation:
Answer: A
Explanation:
f the 8 wolves could not successfully interbreed with the island population, which species concept would classify the two populations as separate species?
Answers
The biological species idea states that a species is a collection of populations with the ability to interbreed.
A species is an organism in biology that has the ability to interbreed and produce fertile progeny. In the taxonomic classification system,'species' is a classification category that comer the taxonomy of 'genus. According to the biological species idea, a population is any group of species that are cohabiting in a certain location at a specific time. An ecosystem's biotic and abiotic elements interact with a population of species. According to the biological theory, a species' chances of survival increase with how well it is suited to an ecosystem.
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In this process what is called a "proton"?
It is the NADH.
It is the ion H+.
It is an electron.
Answers
An hydrogen ion is called a proton (H+) (option B).
What is a proton?A proton is a tiny, positively charged particle of substance found in all atoms.
Owing to the facts that hydrogen atoms with only one electron lose that electron when they transform into an ion, leaving only one proton behind, a hydrogen ion is known as a proton.
In the biological process, a hydrogen atom is often referred to as just a proton, as it is left with only one proton and no electrons, as a H atom only has one of each.
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1. the 2nd portion (5' long) of small intestine that means to empty is the:
Answers
The 2nd portion (5' long) of small intestine that means to empty is the jejunum.
The small intestine, also known as the small bowel, is an organ inside the gastrointestinal tract that is responsible for the majority of nutrient absorption from food. It is located between the stomach and the large intestine and receives bile as well as pancreatic juice via the bile ducts to aid in digestion.
The small intestine is divided into three sections: the duodenum, the jejunum, and the ileum. The duodenum, the shortest, is where absorption preparation begins with small finger-like protrusions called villi.
The jejunum is specialised for enterocyte absorption through its lining of small nutrient particles digested by enzymes with in duodenum. The ileum's primary function is to absorb vitamin B12, bile salts, as well as any digestive products that were not absorbed by the jejunum.
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