By what factor would a scuba diver’s lungs expand if she ascended rapidly to the surface from a depth of 125 ft without inhaling or exhaling? If an expansion factor greater than 1.5 causes lung rupture, how far could she safely ascend from 125 ft without breathing? Assume constant temperature (d of seawater = 1.04 g/mL; d of Hg = 13.5 g/mL).
Answers
It is found that scuba diver’s can safely ascend up to 52.53 ft without Breathing out.
By what factor would a scuba diver’s lungs expand if she ascended rapidly to the surface from a depth of 125 ft without inhaling or exhaling then
\(p_{1}\) =patm+\(pH_{2} O\)
\(p_{1}\) = 101325+ρ\(gh_{1}\)
It is given that height is 125ft. Put the value of h in above formula:
h1 =125ft=38.1m
ρ=1.04g/mL=1040kg/\(m^{3}\)
g=9.81
\(p_{1}\) =101325Pa+388711.44
\(p_{1}\) =490036.44Pa
\(p_{2}\) =p atm =101325Pa
It is known that volume and pressure can be expressed as:
V*P=const.
where, V is volume and P is pressure.
Now,
\(V_{1} *p_{1}\) =\(V_{2} *p_{2}\)
\(V_{2} /V_{1}\)=\(p_{2} /p_{1}\)
\(V_{2} /V_{1}\) =490036.44/101325
\(V_{2} /V_{1}\)=4.84
Assume constant temperature
d of seawater = 1.04 g/mL; d of Hg = 13.5 g/mL.
now \(p_{1}\) =p atm+\(pH_{2} O\) =490036.44Pa
V*p=const
where, V is volume and P is pressure.
Now,
\(V_{1} *p_{1}\) =\(V_{2} *p_{2}\)
\(V_{2} /V_{1}\)=\(p_{2} /p_{1}\)
\(V_{2} /V_{1}\) =490036.44/X
\(p_{2}\) =490036.44pa/(V2/V1) =326690.96Pa
\(p_{2}\) =patm +p\(H_{2} O\)
\(p_{2}\) =101325Pa+ρ\(gh_{2}\)
326690.96Pa=101325Pa+ρ\(gh_{2}\)
ρgh1 =151987.5-101325=225365.96Pa
ρ=1,04g/mL=1040kg/m3
g=9.81
\(h_{2}\) =225365.96/ρ∗g
\(h_{2}\) =225365.96 / 1040∗9.81
\(h_{2}\) =22.09m= 72.47ft
ΔH=\(H_{1} -H_{2}\)
=125-72.47
=52.53ft
So she can safely ascend up to 52.53 ft without Breathing out
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Related Questions
If the molar mass of Na2SO4•nH2O is 304.04 g/mol, what is the hydration number 'n'?A. 10B. 9C. 7D. 8
Answers
Chemistry => The Mole => Percent of water in a Hydrate
We have a compound that is hydrated with "n" moles of water. To determine the moles of water, what we will do is take as a base a mole of the dry compound, that is, 1 mol of Na2SO4.
We will determine the mass of one mol of the dry compound and the difference between the hydrated compound and the dry compound will be the water content.
Let's see what is the molar mass of the dry compound: Na2SO4
Element Mass
Na 2 x 22.99 =45.98 g/mol
S 1 x 32.065 = 32.065 g/mol
O 4 x 15.999 = 63.996 g/mol
Sum 142.04 g/mol
So, we have that one mol of Na2SO4 has a mass of 142.04.
Now, the water in 1 mol of the hydrated compound will be:
\(304.04-142.04=161.999g\)Now, we divide the mass obtained by the molar mass of water, 18.01 g/mol:
\(\begin{gathered} molH_2O=161.99gH_2O\times\frac{1molH_2O}{18.01gH_2O} \\ \\ molH_2O=9 \end{gathered}\)In the hydrated compound, we have 9 moles of H2O for each mol of Na2SO4.
Therefore the ANSWER will be B. 9
Two Step Mole Conversions Practice
Solve the following two step mole conversion problem: 108 liters of CO at STP is equal to how many grams of CO?
grams CO
Answers
a solution is made by mixing of acetone and of methanol . calculate the mole fraction of acetone in this solution. round your answer to significant digits.
Answers
The mole fraction of acetone in this solution is 0.31 to 2 significant digits. The mole fraction of a solute in a solution can be calculated as the number of moles of the solute divided by the total number of moles of both solute and solvent in the solution.
First, we need to calculate the number of moles of acetone and methanol:
moles of acetone = 90 g / (58.08 g/mol) = 1.54 mol
moles of methanol = 108 g / (32.04 g/mol) = 3.36 mol
Next, we add up the moles of both solute and solvent:
total moles = 1.54 mol + 3.36 mol = 4.90 mol
Finally, we can calculate the mole fraction of acetone as follows:
mole fraction of acetone = (1.54 mol of acetone) / (4.90 mol) = 0.31
So the mole fraction of acetone in this solution is 0.31 to 2 significant digits.
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Complete question:
A solution is made by mixing 90. g of acetone ((CH₃)₂CO) and 108. g of methanol (CH₃OH). Calculate the mole fraction of acetone in this solution. Round your answer to 2 significant digits. X?
When exposed to atmospheric oxygen and salt water, aluminum will react to form aluminum oxide which causes bumps and depressions (pitting) on the aluminum surface. This is an example of 1.corrosion 2.galvanization 3.cathodic protection 4.electrolysis
Answers
When exposed to atmospheric oxygen and salt water, aluminum will react to form aluminum oxide which causes bumps and depressions (pitting) on the aluminum surface. This is an example of corrosion.
Corrosion is the destruction of materials by chemical and/or electrochemical reactions with their environment. Corrosion of metals is a major problem in all industries. The chemical reaction results in the formation of metal oxides or salts. It's a natural process that reduces the durability of metal parts and materials. When exposed to atmospheric oxygen and saltwater, aluminum will corrode and form aluminum oxide. As a result, the surface of the aluminum will be pitted. Corrosion of aluminum can be prevented by using coatings such as paints, powder coatings, or anodizing, as well as by avoiding exposure to saltwater. In general, corrosion prevention is an important consideration for the longevity of equipment, structures, and components.
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In the passage, the author writes that people are genetically predisposed to their body type. But once diet becomes a factor, environment begins to play a major role in how the body develops. Based on this evidence, what conclusion can be made?
Answers
People are genetically predisposed to their body types, but once diet becomes a factor, the environment begins to play a major role in how the body develops. As a result, it can be concluded that external factors influence the genetic constituent.
How does epigenetics reflect genetic nature?The external factors, such as food and environment, affect the genetic constitution of the person because when the person consumes junk food that has carcinogenic products, it can change the genes of the cells and cause cancer, obesity, etc. In this way, genes are regulated by external factors too.
Hence, it can be concluded that external factors influence the genetic constituent.
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Oil refineries separate crude oil into fractions by boiling point in a distillation tower. Rank these crude oil fractions in order from lowest to highest boiling point.
Answers
The crude oil fractions, ranked in order from lowest to highest boiling point, are gases, gasoline, naphtha, kerosene, diesel, and residual fuel oil. These fractions are obtained through the distillation process in an oil refinery. The boiling point of each fraction increases as the molecular weight and complexity of the hydrocarbon compounds increase.
During the distillation process in an oil refinery, crude oil is heated in a distillation tower, allowing it to separate into different fractions based on their boiling points. The fractions with the lowest boiling points are the gases, which include methane, ethane, propane, and butane. These gases are typically used as fuel sources or for other industrial purposes.
Next in the order of boiling points is gasoline, a mixture of hydrocarbons with relatively low boiling points. Gasoline is commonly used as a fuel for automobiles. It has a higher boiling point compared to gases but lower than the subsequent fractions.
Naphtha, with a slightly higher boiling point than gasoline, is another fraction obtained from the distillation of crude oil. It is used as a feedstock for petrochemical processes, such as the production of plastics and synthetic fibers.
Kerosene, also known as jet fuel, has a higher boiling point than naphtha. It is commonly used as aviation fuel but also finds applications in heating and lighting.
Diesel, with a higher boiling point than kerosene, is a fuel used in diesel engines for various applications, including automobiles, trucks, and generators.
Lastly, residual fuel oil, sometimes referred to as heavy fuel oil, has the highest boiling point among the fractions. It is a dense, viscous liquid used as a fuel for power generation in large industrial settings.
In summary, the order of the crude oil fractions from lowest to highest boiling point is gases, gasoline, naphtha, kerosene, diesel, and residual fuel oil. This order corresponds to the increasing molecular weight and complexity of the hydrocarbon compounds present in each fraction.
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Forensic scientists play a large role in keeping the community safe and spreading justice. They also play an active role in showing biological proof items in a crime to help investigators understand what occurred. Providing answers about a crime can provide comfort to families that the victims. This can lead to a deep sense of accomplishment and potentially to a higher rate of job satisfaction.
How can i complete the paragraph
Answers
Ensuring public safety and upholding the rule of law are major responsibilities of forensic scientists.
Ensuring public safety and upholding rule of law are significant responsibilities of forensic scientists. They actively participate in demonstrating biological evidence from a crime to aid detectives in understanding what happened. Giving victims' relatives information about a crime helps console them. This may result in a strong sense of accomplishment and work satisfaction. A sharp eye for detail and ability to analyse complicated data are additional requirements for forensic scientists.
They often collaborate and have a chance to learn from others since they work in teams with attorneys, and other professionals. The discipline of forensic science is constantly changing due to technological advancements, opening up new possibilities for development and innovation. Forensic scientists' work is crucial to preserving society's safety and well-being and can give them a sense of fulfilment in their careers.
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Which of the following natural disasters is least likely to occur in Maryland?
Hurricane
O Volcanic eruption
O Tornado
O Blizzard
Answers
Answer:
blizzard because it is cold and rainy all the time.
Explanation:
Blizzard is a natural disaster that is least likely to occur in Maryland.
What is a natural disaster?Maryland was a home to 7th state in united states. Maryland’s most common natural disasters include :
floods hurricanesSevere stormswinter storms tornadoeswildfireslandslidespower outages extreme heat.Maryland has been impacted by several floods. Hurricane season begins one June 1st. Different storms are seen in Maryland. There are two types of disaster manmade and natural. Floods, volcanoes are natural disasters.
Maryland has vast variety of tropological features which include lakes, rivers, mountains and pine forests. Blizzard is a dangerous weather event, it is a snowfall.
Therefore, Blizzard is a natural disaster that is least likely to occur in Maryland.
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What will the pH of 1. 50 L of pure water water be if 2. 0 mL of 4. 0 M HCl is added? By how much has the pH changed?
What will the pH of the solution in part b be if 2. 0 mL of 4. 0 M HCl is added? By how much has the pH changed?
c. What will the pH of the buffer in part c be if 2. 0 mL of 4. 0 M HCl is added? By how much has the pH changed?
Answers
a. Pure water has a neutral pH of 7. When 2.0 mL of 4.0 M HCl (a strong acid) is added to 1.50 L of pure water, the pH of the solution will decrease due to the increase in H+ concentration from the HCl. The amount by which the pH changes can be calculated using the equation:
pH change = -log[H+]
Since the initial H+ concentration in pure water is 1.0 x 10^-7 M, and the concentration of H+ after adding HCl can be calculated using the dilution formula:
[H+] = (moles of HCl) / (volume of solution in liters)
[H+] = (4.0 M) x (2.0 mL / 1000 mL) / (1.50 L)
[H+] = 0.00533 M
Now we can calculate the pH change:
pH change = -log(0.00533)
pH change ≈ -2.28
Therefore, the pH of the solution after adding 2.0 mL of 4.0 M HCl is approximately 7 - 2.28 = 4.72. The pH has decreased by 2.28 units.
b. The pH of the buffer solution will depend on the initial pH of the buffer and the buffering capacity. Without knowing the specific buffer system and its initial pH, it is not possible to determine the exact pH of the buffer solution after adding 2.0 mL of 4.0 M HCl.
c. Similarly, without information about the specific buffer system and its initial pH, it is not possible to determine the exact pH of the buffer solution or the amount by which the pH changes after adding 2.0 mL of 4.0 M HCl.
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If I use warm water on my plants then they will grow faster as hot water increases metabolism." This is an example of
Question 1 options:
a hypothesis
a theory
a research question
a scientific explanation
Answers
Answer:
a hypothesis
Explanation:
A hypothesis is a statement that is supposed or assumed before conducting any experiment. It is the assumption that is made on the basis of certain knowledge and controlled evidence in the initial time of the experiment. The initial assumption helps in taking the experiment or the investigation further. The truth is not ascertained in the initial phase rather the completion of the investigation is necessary to make a hypothesis turn into a theory.
In the given situation, the statement given is a hypothesis because the use of the warm water for the growth of the plants is the assumption made with respect to the metabolism effect on the humans.
true or false: nutrition is the acquisition of chemical substances by organisms for use as an energy source or as building blocks of cellular structures.
Answers
The statement " nutrition is the acquisition of chemical substances by organisms for use as an energy source or as building blocks of cellular structures" is true.
Nutrition is indeed the acquisition of chemical substances by organisms for use as an energy source or as building blocks of cellular structures. Organisms require various nutrients, including carbohydrates, proteins, fats, vitamins, minerals, and water, to carry out their metabolic processes, maintain growth and development, and support overall health and well-being.
These chemical substances obtained through nutrition are utilized by organisms to provide energy for cellular processes, such as respiration, synthesis of biomolecules, and movement. They also serve as building blocks for the construction and repair of cellular structures, including proteins, nucleic acids, lipids, and carbohydrates.
Nutrition is a fundamental process that ensures the availability of essential nutrients for organisms to carry out their life functions effectively. Different organisms have varied nutritional requirements depending on their specific metabolic needs, lifestyles, and physiological characteristics.
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Describe your observations of how the waves are behaving in the photograph.
Answers
Answer:
The waves are behaving this way due to the simultaneous water drops landing in the water.
Explanation:
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What form is the carbon prior to the lion eating the giraffe?*
1 point
Carbon dioxide
Sugar
Nitrogen
Answers
Answer:
Sugar
Explanation:
The carbon is in form of sugar prior to the lion eating the giraffe. This form of carbon in the giraffe serves as a rich source of nutrient for the lion.
The carbon enters living organisms as carbon dioxide. As it enters, it is converted by plants into glucose, a from of sugar.
When giraffes eats the glucose in plant, it is stored in them and used for the liberation of energy
This same stored chemical energy in the giraffe is taken up by the lion.
When you have a question, an internet search engine is often the first place you go to for answers, but a search might return thousands of results. Which sources are good resources, and which are biased or inaccurate? By considering the different sites critically, you can determine which are likely to be unbiased, knowledgeable, and current.
A good first step is to check the page’s web address, or uniform resource locator (URL). For example, the URL www.census.gov refers to the World Wide Web server at the Census Bureau of the United States government. In the United States, government websites such as the Centers for Disease Control and Prevention, the US Census, and NASA will end in .gov. The websites of universities end in .edu and, since these large institutions review information posted to their official sites, they are usually reliable sources of data.
The website for c d c dot gov.
A URL ending in .gov indicates a government website.
If the website has a different domain, such as .com or .org, it may still be accurate and objective. Try to determine the author. If it is one person, what can you tell about the author’s qualifications to write on this topic? Can you cross-check this information somewhere else? If the website is part of an institution, have you ever heard of it? Does the institution have an agenda it promotes, presenting only one side of an issue? Can you verify the information about the author or institution?
Look at the language used on the page. First, are there spelling or grammatical errors? These can indicate a page that is maintained by one person, with no peer review before the information is posted. If no one double-checks the spelling, it is quite possible that no one double-checks the accuracy of what is posted, either.
Next, consider the style of writing: is it designed to inform the reader about a subject, or is the intention to persuade the reader of something? Does the author use neutral words or choose words that will evoke an emotional response?
Sometimes you can check a site’s accuracy against your own base of knowledge. For a topic new to you, determine the author of the piece and evaluate how objective the information seems, and then look at how the information presented is supported. Does the page give sources to back up its claims, are there links to these sources, and do they connect to live, reputable sites?
Finally, consider whether the information is current enough for your needs. Look for the date the page was published or updated, as information can sometimes be several years old but still accurate. In other cases, you want to check that the information is current.
The internet is obviously brimming with countless answers to your questions, making researching and learning faster and easier. It is up to you, however, to make the extra effort to ensure that the information is trustworthy and the best choice for you and your academic needs. What questions should be considered when evaluating the reliability of a website?
Answers
Answer:
bro noone going to sit down and read all this
Explanation:
If I add 2.75 g of CaO to 155 mL of distilled water, what will be the concentration of the solution be?
Answers
moles of CaO = 2.75g / molar mass
2.75g/ 56.08g = 0.049moles CaO
155mL / 1000 = 0.155 L
M= 0.049moles/0.155L
M=0.316
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define an arrhenius acid and describe the properties of acids. use an example to explain how an arrhenius acid will behave when dissolved in water.
Answers
An Arrhenius acid is a substance that dissociates in water to form hydrogen ions or protons.
What is an Arrhenius acid?An Arrhenius acid increases the number of\(H^+\) ions in the water.
According to the Arrhenius theory, a substance which has hydrogen atom and can easily give hydrogen ion or proton in its aqueous solution is called as Arrhenius acid.
For example, when hydrochloric acid is dissolved in water, it forms chloride ion (\(Cl^-\)) and hydronium ion (\(H_3O^+\)).
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what reagents can be used to test for unsaturation of hydrocarbons?
Answers
Answer:
Bromine test is used to test the unsaturation of hydrocarbons.
Explanation:
Match the correct behavior of ions toward sulfuric acid, H2SO4.
1) Chloride, Cl- ...
A: Violet or red-brown vapors of elemental iodine form
B: colorless, odorless gas (carbon dioxide) evolves
C. Colorless, pungent gas, HCl evolves, which turns blue litmus red
D: No observable reaction
Answers
D: No observable reaction
When chloride ions (Cl-) are added to sulfuric acid (H2SO4), no observable reaction occurs. This is because chloride ions are not strong enough to displace the hydrogen ions (H+) in H2SO4. The hydrogen ions are more attracted to the sulfate ions (SO42-) in the acid, which means that the chloride ions cannot displace them. As a result, there is no chemical reaction and no color change or gas evolution occurs.
It's important to note that the behavior of ions towards sulfuric acid can vary depending on the specific ion and its properties. Some ions may be strong enough to displace the hydrogen ions and react with the acid, while others may not react at all. Understanding the behavior of ions towards sulfuric acid is important in many chemical processes and industries.
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the following elimination proceeds via an e1 mechanism. why would you expect this to be a slow reaction that requires heat to proceed?
Answers
The slow rate of E1 reactions is due to the high-energy intermediate and the stability of the carbocation intermediate, which is dependent on the electronic nature of the substrate.
An E1 elimination mechanism involves the loss of a leaving group and the formation of a carbocation intermediate. The rate-determining step of this mechanism is the formation of the carbocation intermediate, which is typically a slow process. This is because the carbocation intermediate is a high-energy species that is unstable and reactive.
Additionally, the stability of the carbocation intermediate is dependent on the nature of the substituents attached to the carbon bearing the leaving group. If the carbon has electron-withdrawing groups, such as halogens or carbonyl groups, the carbocation intermediate will be more stable and the reaction will proceed more quickly. On the other hand, if the carbon has electron-donating groups, such as alkyl or aryl groups, the carbocation intermediate will be less stable and the reaction will proceed more slowly.
In the case of an E1 mechanism that requires heat to proceed, this indicates that the reaction is not thermodynamically favorable and that a significant amount of energy is needed to overcome the activation energy barrier. This is typically seen in reactions that involve large, bulky leaving groups or substrates with multiple substituents that hinder the formation of the carbocation intermediate.
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a car is traveling 35 miles/hr for 17 miles. How much time has the car been on the road?
a
595 hours
b
2.1 hours
c
1.5 hours
d
0.49 hours
Answers
Answer:
The car has been on the road for 0.49 hours
Explanation:
A car is traveling 35 miles/hr for 17 miles.
Speed of a car = 35 miles/hr
Distance travelled = 17 miles
The relationship between speed, distance, and time is given by
Distance = Speed × Time
Put Speed = 35 miles/hr, Distance = 17 miles
\(17=35\) × Time
Time = \(\frac{17}{35}=0.49\) hours
So, the car has been on the road for 0.49 hours
The time car has been on the road has been 0.49 hours. Thus, option D is correct.
Speed can be defined as the distance traveled by the object in unit time. The speed can be expressed as:
\(\rm Speed\;=\;\dfrac{Distance}{Time}\)
The car has been given to be traveling at:
Speed = 35 miles/hr
Distance traveled = 17 miles.
The time taken by car to travel 17 miles can be calculated by substituting the values as:
\(\rm 35\;miles/hr\;=\;\dfrac{17\;miles}{Time}\\\\\\\\Time\;=\;\dfrac{17\;miles}{35\;miles/hr}\)
Time = 0.49 hr.
The time taken by car to travel 17 miles has been 0.49 hours. Thus, the correct option has been D.
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Why do reactions need to be balanced?
A. Because the reactants must be the exact same as the products
B. Because of the conservation of energy
C. Because the volume of reactants must equal the volume of
products
D. Because atoms are not lost or gained in a chemical reaction
Answers
Answer:
A part.
Explanation:
Because the reactants must be the exact same as the the products.
There are
groups and
periods in the periodic table.
Answers
Answer:
I do not understand but,
Explanation:
There are 18 groups, 18 columns, and 118 elements at the time of this response.
Here is a map of the periodic table for any more help that you might need.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Why do ionic compounds make good conductors when dissolved in water?
A. The ions are free to move in water and carry an electric charge.
B. They carry more electrons than protons, giving the water a net
negative charge.
C. They carry more protons than electrons, giving the water a net
positive charge.
D. The ions bind with the water molecules, giving the molecules a net
charge.
Answers
Balance the following equation by oxidation number method:
Zn + HNO3-----> Zn(NO3)2 + NO + H2O
Answers
By using the oxidation number approach, find the solution to the equation Zn + HNO3 4Zn(NO3)2 Plus N2O + H2O.
Zn HNO3 undergoes what kind of reaction?Chemical Reaction Type: We only have one displacement reaction for this reaction. Balanced Approaches: By employing diluted HNO3, the reaction between HNO3 with Zn will result in Zn(NO3) + H2.
Is the displacement reaction in Zn H2O?Balanced Approaches: You have a displacement reaction reaction in this zinc and water reaction. Cold water does not cause the response to occur. Water must be scorching hot or at least very hot. The number the hydrogen atoms just on output side of the formula must be correctly counted in order to balance the equation.
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How many neutrons are present in 4.4 gram of Co2
Answers
Explanation:
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Answers
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Put the steps below in the order they are performed in the lab experiment by numbering them 1-7. Use a Bunsen burner to heat and dry the hydrate, repeating until the mass no longer decreases. Measure the final masses of the crucible, cover, and anhydrous salt. Compute differences in masses to find the reactants and products. Measure initial masses of the crucible and cover, with and without the hydrate. Use the numbers of moles to compute the mole ratio. Use stoichiometry to convert these masses to moles. Use the mole ratio to write the hydrate’s formula.
Answers
Answer:
1) Measure initial masses of the crucible and cover with and without the hydrate.
2) Use a Bunsen burner to heat and dry the hydrate, repeating until the mass no longer decreases.
3) Measure the final masses of the crucible, cover, and anhydrous salt.
4) Compute differences in masses to find the reactants and products.
5) Use stoichiometry to convert these masses to moles.
6) Use the numbers of moles to compute the mole ratio.
7) Use the mole ratio to write the hydrate’s formula.
Explanation:
A hydrate is any substance that contains water of crystallization. The water of crystallization constitutes part of the mass of the substance. When heated to constant mass, the substance looses its water of crystallization and becomes anhydrous.
The mass of the anhydrous substance is now obtained by weighing again and subtracted from that of the hydrated substance. The masses are converted to moles using stoichiometry and the moles are then used to obtain the formula of the hydrate.
Answer: answers in order from top to bottom
2
3
4
1
6
5
7
Explanation: right on edg
convert eachh into scientific notation
4.060 x 10^5 →
7 x 10^3 →
5.0 x 10^-4 →
8 x 10^-2 →
Answers
Answer:
0.00580 →
3000 →
0.000908 →
200. →
Explanation:
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Answer:
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Explanation:
4.060 × 10⁵ (scientific notation)
The decimal point moves 5 places to the right.
⇒ 406000 (standard form)
7 × 10³ (scientific notation)
The decimal point moves 3 units to the right.
⇒ 700 (standard form)
5.0 × 10⁻⁴ (scientific notation)
The decimal point moves 4 units to the left.
⇒ 0.0005 (standard form)
8 × 10⁻² (scientific notation)
The decimal point moves 2 units to the left.
0.08 (standard form)
An earthquake on the ocean floor produced a giant wave called a tsunami. The tsunami traveled through the ocean and hit a remote island, causing a lot of damage. Is the water that hit the island the same water that was above the earthquake on the ocean floor?
Answers
Answer:
Yes
Explanation:
What cause an earthquake is when the earth plates shift and if theirs a drop in the tentonic plates a ripple effect like when you drop something in water will occur. The plates shift down the water in which the plate shift down the water will go in that direction due to gravity, but instead of equalizing the water will pick up some speed and velocity and begin to form a wave now. When an tsunami happens you know it coming cause the water moves back cause the water is picking up to much speed and due to cohesion its moves along with the move water and builds up. Creating a massive tidal wave known as tsunamis.
The water that hit the island is not the same water that was above the earthquake on the ocean floor. Waves transfer energy not matter.
It should be noted that the earthquake on the ocean floor that produces a giant wave referred to as a tsunami is quite different from the water that hits a remote island, causing a lot of damage.It should be noted that waves transfer energy but not matter. While waves are able to transfer energy over a particular distance, it doesn't move the matter along the same distance.For example, it should be noted that an ocean wave is able to travel for several kilometers while the water itself doesn't move.In conclusion, waves transfer energy not matter.
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the ph at one half the equivalence point in an acid-base titration was found to be 5.46. what is the value of ka for this unknown acid?
Answers
The value of Ka for this unknown acid is 3.65 x 10^(-6).
To find the value of Ka for the unknown acid, we first need to understand what is meant by "one half the equivalence point" in an acid-base titration.
The equivalence point is the point at which the acid and base have reacted completely and are in stoichiometrically equivalent amounts. At this point, the pH will be equal to the pKa of the acid (for a weak acid-strong base titration) or pKb of the base (for a weak base-strong acid titration).
"One half the equivalence point" refers to the point at which exactly half of the acid has been neutralized by the base. At this point, the moles of acid remaining is equal to the moles of base added, so we can use the Henderson-Hasselbalch equation to find the pKa of the acid.
pH = pKa + log([A-]/[HA])
At one half the equivalence point, [A-] = [HA], so we can simplify the equation to:
pH = pKa + log(1)
pH = pKa
Therefore, at one half the equivalence point, the pH is equal to the pKa of the acid. In this case, the pH is 5.46.
To find the value of Ka, we can use the equation:
Ka = 10^(-pKa)
Substituting in the pH of 5.46:
Ka = 10^(-5.46)
Ka = 3.65 x 10^(-6)
Therefore, the value of Ka for this unknown acid is 3.65 x 10^(-6).
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