Considering the definition of enthalpy of vaporization, the amount of heat that would be involved in condensing 15.8 g of CH₃OH is 18.8 kJ.
When a material changes phase from solid to liquid, or from liquid to gas, a certain amount of energy is involved in this phase change.
In case of phase change from liquid to gas, this amount of energy is known as enthalpy of vaporization (symbolized as ∆Hvap).
So, the enthalpy of vaporization is the amount of energy required to change a unit of mass (for example, moles or kg) of a substance from phase liquid to phase gas at constant temperature and pressure.
In this case, you know that enthalpy of vaporization is ∆Hvap = 38.0 kJ/mol.
On the other side, you want to vaporize 15.8 g of CH₃OH. Then, being the molar mass of the compound 32 [tex]\frac{g}{mole}[/tex] (that is, the amount of mass contained in one mole), the number of moles to be vaporized is:
[tex]15.8 gramsx\frac{1 mole}{32 grams} =0.49375 moles[/tex]
Then, the amount of heat that would be involved in condensing 15.8 g of CH₃OH is calculated taking into account the enthalpy of vaporization by:
0.49375 moles× 38.0 [tex]\frac{kJ}{mol}[/tex]= 18.76 kJ ≅ 18.8 kJ
Finally, the amount of heat that would be involved in condensing 15.8 g of CH₃OH is 18.8 kJ.
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Answer:
There no image to reference lol. Can't help you
Explanation:
What term best describes region ""b"" of the phospholipid model above?.
The term which best describes the region "b" of the phospholipid model in the attached image (below) is: Hydrophobic.
Phospholipids are also referred to as phosphatides and they are a type of lipid whose molecule comprises the following:
A hydrophilic "head" that contains a phosphate group.Two (2) hydrophobic "tails" joined by an alcohol residue and that are mainly derived from fatty acids.This ultimately implies that, a large potion of the cell (plasma) membrane is made up of lipids, which are mainly phospholipids and they control the movement of large hydrophilic molecules such as alkanes, oils, and fats.
In conclusion, hydrophobic is a term that is used to describe the tail or lower part of a phospholipid model, which is the "b" region in the image attached below.
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In the poem "War Is Kind," which best describes the effect of the repetition of the lines "Do not weep. War is kind"? These lines illustrate the fact that people react very differently to suffering. These lines suggest that people who suffer from war are overreacting. These lines highlight the idea that war is not as brutal as people think. These lines emphasize the harshness of the scenes the speaker describes.
There are different kinds of poem. In the poem "War Is Kind," the best description of the effect of the repetition of the lines is that the lines emphasize the harshness of the scenes the speaker describes.
The line of the poem talks able the cruelty of war and how its effect on the people.War is not a pleasant situation. Stephen Crane in his poem calls war "kind". This is because he laugh at the idea that young men often believe that going to war is noble and dying for one's country is an heroic act.
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Answer:
These lines emphasize the harshness of the scenes the speaker describes.
Explanation:
D on edge!
Hydrogen reacts with chlorine to form hydrogen chloride (HCl (g), Delta. Hf = –92. 3 kJ/mol) according to the reaction below. Upper H subscript 2 (g) plus upper C l subscript 2 (g) right arrow 2 upper H upper C l (g). Which statement is correct? Use Delta H r x n equals the sum of delta H f of all the products minus the sum of delta H f of all the reactants. The enthalpy of the reaction is –184. 6 kJ, and the reaction is exothermic. The enthalpy of the reaction is –184. 6 kJ, and the reaction is endothermic. The enthalpy of the reaction is 184. 6 kJ, and the reaction is endothermic. The enthalpy of the reaction is 184. 6 kJ, and the reaction is exothermic.
Answer:
a
Explanation:
aaa
The statement which is correct about the reaction of hydrogen with chlorine is used Delta H r x n equals the sum of delta H f of all the products minus the sum of delta H f of all the reactants. The correct option is A.
What is a chemical reaction?A chemical reaction is a transformation of one or more chemicals (the reactants) into one or more distinct compounds (the products). Chemical elements or chemical compounds make up substances.
When a chemical reaction occurs, the reactance responds by rupturing the bonds in the energy and forming new compounds. Breaking chemical bonds between reactant molecules (particles) and creating new bonds between atoms in product particles are two aspects of chemical reactions (molecules).
Therefore, the correct option is A, Use Delta H r x n equals the sum of delta H f of all the products minus the sum of delta H f of all the reactants.
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Imagine that you are a writer for a leading newspaper company in the philippines brainly.
If I was a writer, the implementation of a 24-hour curfew for minors in time of pandemic is vital in order to keep them safe.
This is an incomplete question. The question is about the implementation of a 24-hour curfew for minors in time of pandemic. A pandemic is an epidemic of an infectious disease which has spread over large regions and has affected several individuals.
During a pandemic, there's an outbreak of diseases that can be transmitted from person-to-person contact. Therefore, it's important for people to be safe.
To address this issue, there should be an implementation of a 24-hour curfew for minors in the time of pandemics. This is vital to keep them safe.
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The heat required to change 1 gram of a solid at its normal melting point.
By definition, the heat required to change 1 gram of a solid at its normal melting point is called heat of fusion.
Latent heat is defined as the energy required by a quantity of substance to change state.
When this change consists of changing from a solid to a liquid phase, it is called heat of fusion and when the change occurs from a liquid to a gaseous state, it is called heat of vaporization.
Fusion is the process by which a solid becomes a liquid phase. In this case, the temperature remains constant throughout the time that the solid turns into a liquid.
This occurs because in the solid phase the molecules are held together forming a rigid crystalline structure, in such a way that the substance has a defined shape and volume. As heat is supplied, the energies of the solid's particles gradually increase. After a certain time, this energy becomes so great that some of the particles exceed the force that kept them in their fixed positions.
In this way, the greatest separation between the particles is associated with the liquid phase.
Thus, the energy absorbed by the substance is used to separate the molecules more than in the solid phase, so that the temperature does not increase during the change of state.
In summary, it is called "heat of fusion", the energy required to change 1 gram of substance from a solid state to a liquid state, without changing its temperature.
In others words, the heat required to change 1 gram of a solid at its normal melting point is called heat of fusion.
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Which of the following gases in the atmosphere is not considered a main contributor to the greenhouse effect?.
Which statement is always true when describing sex-linked inheritance?.
Answer:
The alleles are found on the X or Y chromosome.
How much force is needed to stop a 100-kg football player if she decelerates at 20 m/s2? 5 N 20 N 200 N 2000 N.
2000 N. is needed to stop a football player
An archer fish spies a meal of a grasshopper slader.
Answer:
sitting on a long slader of grass at the edge of the pond in which he is swimming.
Explanation:
sitting on a long stalk of grass at the edge of the pond in which he is swimming. If the fish is to bite him
Which prediction does this passage best support? moses and his stories will complicate the pigs’ control over the other animals. The pigs will adopt moses’s ideas and promote them on animal farm. Moses will die and end up on sugarcandy mountain, thus proving its existence. The animals will demand that moses leave the farm and will force him out.
Stories often convey deep meaning. Moses and his stories will complicate the pigs' control over the other animals.
The Animal Farm is known to be a novella that was written by George Orwell. It was known to be written in England in 1945.
The story was about a group of farm animals who fought back against their human farmer. They wanted to a society where the animals can be equal.
The pigs were actually are interested in been in charge of all the animals and the stories of Moses is hindering their agenda.
See full question below
Read the passage from chapter 2 of Animal Farm.
The pigs had an even harder struggle to counteract the lies put about by Moses, the tame raven. Moses, who was Mr. Jones's especial pet, was a spy and a tale-bearer, but he was also a clever talker. He claimed to know of the existence of a mysterious country called Sugarcandy Mountain, to which all animals went when they died. It was situated somewhere up in the sky, a little distance beyond the clouds, Moses said. In Sugarcandy Mountain it was Sunday seven days a week, clover was in season all the year round, and lump sugar and linseed cake grew on the hedges. The animals hated Moses because he told tales and did no work, but some of them believed in Sugarcandy Mountain, and the pigs had to argue very hard to persuade them that there was no such place.
Which prediction does this passage best support?
Moses and his stories will complicate the pigs’ control over the other animals.
The pigs will adopt Moses’s ideas and promote them on Animal Farm.
Moses will die and end up on Sugar candy Mountain, thus proving its existence.
The animals will demand that Moses leave the farm and will force him out.
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Answer:
A:Moses and his stories will complicate the pigs’ control over the other animals.
Explanation:
Scientists discover a new organism. The organism is autotrophic, with membrane-bound organelles. To which of these kingdoms does this organism most likely belong?.
Protista, would be the answer
The half-life of protactinium-226 is 2 minutes. If you started with 20 grams of pa-226, how much do you have after 8 minutes?.
Answer:
28.25
Explanation:
To what extent do covalent compounds conduct electricity?.
Answer:
A covalent bond is formed between non metal atoms, which combine together by sharing electrons. Covalent compounds have no free electrons and no ions so they don't conduct electricity
Explanation:
Answer:
the answer is never
Explanation:
i did the test :)
Which is the correct translation of the sentence into an equation? four less than a number is 12.
Answer: 4 - ? = 12
Explanation: maybe
Solve for x. 9(x + 1) = 25 + x x = 2 x = 3 x = 4 x = 5.
Answer:
[tex]\boxed{\boxed{\sf x=2}}[/tex]
Explanation:
[tex]\sf 9(x + 1) = 25 + x[/tex]
*Apply Distributive property*
[tex]\leadsto\sf 9x+9=25+x[/tex]
Subtract 9 from both sides:
[tex]\leadsto\sf 9x+9-9=25+x-9[/tex]
[tex]\leadsto\sf 9x=x+16[/tex]
Subtract x from both sides:
[tex]\leadsto\sf 9x-x=x+16-x[/tex]
[tex]\leadsto\sf 8x=16[/tex]
Divide both sides by 8:
[tex]\leadsto\sf \cfrac{8x}{8}=\cfrac{16}{8}[/tex]
[tex]\leadsto\sf x=2[/tex]
_________________________________________
Tim drives at an average speed of 80km.
Answer:
and? I dont know Tim.
Explanation:
My primary group brainly.
Answer:
???
Explanation:
You have a 20 year annuity with a present value of $575,000. If the apr is 6%, what is the monthly yield?.
Annuities allow us to measure the cost of making payments over a period of time. Given the entries in the question given, the monthly yield will be;
$4119.48Since the interest will be compounded monthly, the number of periods will be 12. To determine the monthly payment from a payout annuity, use the formula;
Present value = Monthly yield (1 - (1 + APR/12)^-12 × n
APR/12
Fixing the above into the equation;
$575,000 = PMT (1 - (1 + 0.06/12)^-12 × 20
0.06/12
$575,000 = PMT 139.6
Making PMT the subject of the formula,
PMT = 575,000/139.6
PMT = $4118.911
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What is the remainder when f(x) = 2x4 + x3 − 8x − 1 is divided by x − 2?.
Do you think counselors are trustworthy.
Answer:
Yes.
Explanation:
I feel like they are because of the simple fact they cannot share your information, or anything you have said, with anyone because of confidentiality. The only way they can share anything is if you are going to hurt yourself or others, or if you give them verbal or written permission to do so.
Ryan invests a sum of money in a savings account with a fixed annual interest rate of 4. 31.
The amount of his initial investment is $8361
The complete question says:
Ryan invests a sum of money in a savings account with a fixed annual interest rate of 4.31% compounded 12 times per year. After 10 years, the balance reaches $12,855.94. What was the amount of the initial investment?
The initial investment is the amount required to start a particular project, and the amount of the initial investment can be calculated by using the compound interest formula:
[tex]\mathbf{A = P(1 + \dfrac{r}{n})^{nt}}[/tex]
where;
A = amountP = Principalr = interest rate n = number of months∴
[tex]\mathbf{12855.94 = P(1 + \dfrac{0.0431}{12})^{12 \times 10}}[/tex]
[tex]\mathbf{12855.94 = P(1 +0.003591666667)^{120}}[/tex]
[tex]\mathbf{12855.94 = P(1.53760)}[/tex]
[tex]\mathbf{P= \dfrac{12855.94}{(1.53760)} }[/tex]
P = $8361.043
P ≅ $8361
Therefore, we can conclude that the amount of the initial investment is $8361
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How did buddhism influence east asian arts and crafts.
Adopting the Buddhist way of paying homage through art, Taoist art began being created and China developed its architectural culture.
WhY DoEs MoMmUy JuMp UP AND DOWN IN THDOSE MUDDY MUDDY POODLES
Answer:
because shes a piggy.
Explanation:
Answer:
yeaaaa
Explanation:
Mud digger
We kick the mud by the pound
Our tires stay roarin' while we ridin' through the town
Mud digger
And I keep a bad truck around
Big truck tall suspension, 40-inches from the ground
Mud digger
And my Chevy sittin' on 44's
Pipes louder than glass packs, straight pipes y'all know
Mud digger
If y'all don't know how the mud diggin' goes
Then get a couple of tickets to a mud boggin' show
A hunter carries a firearm while climbing into and out of a tree stand. What is the proper way to get the firearm into and down from the stand?.
Considering the situation described above, the proper way to get the firearm into and down from the stand is to use the "haul line like strong rope, strap or commercially made line to carry the firearms."
This is because carrying firearms to climb a tree is dangerous. It is believed that the additional weight of the gun can lead to loss of balance, thereby making the hunter fall.
In some cases, following the hunter's fall, there may be an accidental discharge which may eventually injure or kill the hunter.
Also, when using a haul line to carry the firearms, the hunter still needs to follow certain precautions to avoid accidental discharge, such as unloading of weapons and turning the muzzle upside down.
Hence, in this case, it is concluded that the correct answer is "haul line like strong rope, strap or commercially made line to carry the firearms."
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What is the sum of the polynomials (8x2-9y2-4x)+(x2-3y2-7x).
The answer to your question is: D.) 9x²-11x-12y²
answer:
9x-2-12y-2-11x
explanation:
Remove the parentheses: 8x-2-9y-2-4x-+x-2-3y-2-7x
Combine like terms: 9x-2-12y-2-11x
Answer: 9x-2-12y-2-11x
Between ant and grasshopper which would you choose to be why.
Answer:
ant
Explanation:
way more interesting, can carry objects way heavier than them and if they were to become human size they would pretty much rule the earth whereas a grasshopper is annoyinggggfg and if they were the size of humans we'd probably die of blood loss in the ears.
When it comes to the choice between an ant and a grasshopper, my choice would be an ant because:
Ants are really strong. Ants are farmers. Ants are very resilient as a species.Ants are known to be really strong such that they can carry things that are 50 times their body weight which allows them to carry a lot of food to their colonies.
Ants are also farmers in that they have been known to protect some other insects so that they can keep getting agricultural produce like honeydew.
Ants are also quite resilient in that they have been around for as long as dinosaurs which means they are some of the oldest species in the world.
In conclusion, ants are preferably to grasshoppers in my opinion.
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Erikah has just arrived at the funeral.
Answer:
Is this real?
Explanation:
Your automatic payment option pays bills of $23. 17, $55. 67, $2,345. 15, $575. 25 and $1. 15. How much was the mean payment?.
A retailer is able to track which products draw the most attention from its customers through the use of 5g-enabled motion sensors placed around the store. With this knowledge, the retailer can supply the proper amount of products to meet customer demand.
There is a wide spread of 5g technology. The technology that combines with 5G capabilities and used in the monitoring of the shopping trends is the Internet of Things.
The Internet of things is known to explain real or physical objects that are found along with sensors, processing ability, software, and other technologies.
They act by connecting and exchanging data with other devices and systems through the Internet or other communications networks.
The examples of Internet of Things are:
Connected appliances. Smart home security systems. Wearable health monitors etc.See full question below
A retailer is able to track which products draw the most attention from its customers through the use of 5G-enabled motion sensors placed around the store. With this knowledge, the retailer can supply the proper amount of products to meet customer demand.
Which technology combines with 5G capabilities to allow the monitoring of shopping trends in this way?
platooning
network slicing
internet of things
beamforming
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