Answer:
The existence of pelvic bones and toenails in manatees and elephants suggests that manatees and elephants evolved from the same land animal.
Explanation:
This is the correct answer on the test. Comment if it isn't so I can fix it. Good Luck!!!!
The presence of the pelvic bones and the toenails in the manatees and elephants suggests that they both evolved from the same land animal.
What is a manatee?Manatees are large fully aquatic and mostly herbivorous marine mammals. They are thus called sea cows. There are three types of living species that measure 4.0 meters.
They have padle-like flippers. As they are herbivorous they are inclosed connected to land mammals like the elephants.
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In a small private school, students are randomly selected from available students. What is the probability that they are the youngest students?.
Answer:
look blow
Explanation:
13%
Critical consumption is all of the following except.
Critical consumption is based on ethical and political beliefs of the consumer.
Critical consumptionCritical consumption is the process of either buying or not buying a specific product because of ones ethical or political beliefs.
The decision of either buying or not buying the product is as a result of the product characteristics such as environmental sustainability and respect of workers’ rights.
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In why you reckon the narrator and the other man do not hold edward for ransom.
Answer:
They don't ask for ransom because they want money right away so they can eat.
Why do they need money right away?
The men say they are very hungry, but they don't have any money to buy food.
They can't get any kind of donation either and the hunger is getting hard to bear.
For this reason, they decide to rob a rich white man, so they would have immediate money to satisfy their hunger.
The hunger is so violent that they don't even realize they can get more money by keeping the man kidnapped and asking for a ransom payment.
This question is about "Why you Reckon" written by Langston Hughes, who was an author who used to portray the challenges of black society.
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Which of the following statements best describes an opportunistic infection (oi)?.
Answer: A
Explanation: OIs are common only to people with healthy immune systems
Use the properties of logarithms to write the following expression as one logarithm. Logs logr + 8logr s − 3logr t mc001-1. Jpg mc001-2. Jpg mc001-3. Jpg mc001-4. Jpg.
Answer:
It is C On edge
Explanation:
Just took it:)
In this exercise we have to use the properties of the logarithm to write it in one way, like this:
[tex]log(r+s)(rs)^8/(rt)^3[/tex]
From these recalling some properties of the logarithm, we find that:
When the logarithm is equal to the base, the logarithm will always be equal to 1.Logarithm of any base, whose logarithm is equal to 1, will always have the result equal to 0.Two logarithms with the same base are equal when the logarithms are also equal.given the equation as:
[tex]log(s)log(r)+8log(rs)-3log(rt)\\log(s+r)+8log(rs)-3log(rt)\\logg(r+s)(rs)^8/(rt)^3[/tex]
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Which statement is true about a world isothermal map?.
Answer:
temperatures decrease from east to west
A golf club hits a stationary 0. 050-kilogram golf ball with an average force of 5. 0 × 103 newtons, accelerating the ball to a speed of 44 meters per second. What is the magnitude of the impulse imparted to the ball by the golf club?.
The magnitude of the impulse imparted to the ball by the golf club is; 2.2 N.s
Magnitude of ImpulseWe are given;
Mass of golf club; m = 0.05 kg.
Magnitude of average force on ball; F = 5 × 10³ N
Velocity of the ball; v = 44 m/s
Now, we know that formula for Force is;
F = ma
where;
m is mass
a is acceleration = v/t
Thus;
F = mv/t
t = mv/F
t = (0.05 * 44)/(5 × 10³)
t = 4.4 × 10⁻⁴ s
Formula for impulse is;
I = F * t
I = 5 × 10⁻³ × 4.4 × 10⁻⁴
I = 2.2 N.s
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Paradichlorobenzene, c6h4cl2 c 6 h 4 c l 2 , is a component of mothballs. A solution of 2. 00 g g in 22. 5 g g of cyclohexane boils at 82. 39 ∘c ∘ c. The boiling point of pure cyclohexane is 80. 70 ∘c ∘ c. Calculate kb k b for cyclohexane.
The value of kb of cyclohexane in the given question is; kb = 2.82 °C/m
Understanding Molality of a Solution
Molality of solution = (Number of moles of C₆H₄Cl₂)/(Mass of Cyclohexane)
Now;
Number of moles of C₆H₄Cl₂ = Mass/molar mass = 2g/147 g/mol
Number of moles of C₆H₄Cl₂ = 0.0136 mol
Molality of solution = 0.0136/(22.5 * 10⁻³ kg)
Molality of solution = 0.6 m
Now, to find kb for cyclohexane, we will use the formula;
T_b(solution) - T_b(solvent) = kb × molality of solution
Thus;
82.39 - 70 = kb * 0.6
kb = (82.39 - 70)/0.6
kb = 2.82 °C/m
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Hikers climbing mount everest discovered it took much longer to cook a boiled egg than it does at sea level, because the boiling water is not as hot. The ∆h(vap) of water is 40. 7 kj/mol. Atmospheric pressure at sea level is 760 torr. R = 8. 314 ×10⁻³ kj/mol･k. Calculate the temperature of boiling water (in °c) at an atmospheric pressure of 375 torr.
The temperature of Boiling Water in °c is;
T₁ = 121.22 °c
Use of Clausius Clapeyron Equation
We are given;
Initial atmospheric Pressure; P₁ = 375 torr
∆h(vap) of water= 40. 7 kj/mol = 40700 J/mol
Final atmospheric pressure; P₂ = 760 torr
R = 8.314 10⁻³ kj/mol.k = 8.314 j/mol.k
Using Clausius Clapeyron Equation, we have;
In(P₂/P₁) = (-∆h/R) * (1/T₂ - 1/T₁)
where T₂ = 373.15 K (boiling point)
Thus;
In(760/375) = -(40700/8.314) * (1/373.15 - 1/T₁)
0.70639 = -4895.357 * (0.00268 - 1/T₁)
(0.00268 - 1/T₁) = -0.70639/4895.357
0.0268 - 1/T₁ = -0.0001443
1/T₁ = 0.00268 - 0.0001443
T₁ = 1/0.0025357
T₁ = 394.37 K
in °c gives; T₁ = 121.22 °c
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What happens to a given mass of water as it is cooled from 4˚c to zero?.
Answer:
What happens to a given mass of water as it is cooled from 4°C to zero? d. Neither expands, contracts, nor vaporizes
Explanation:
Which equation is represented by the graph below? on a coordinate plane, a curve approaches y = negative 4 in quadrant 3 and then increases exponentially in quadrant 1. It crosses the y-axis at (0, negative 3). Y = l n x minus 3 y = l n x minus 4 y = e superscript x baseline minus 3 y = e superscript x baseline minus 4.
The equation that is represented by the given graph is;
D: y = eˣ - 4
Coordinates of Graphs
The graph is missing but from online sources, we can tell that;
The function is defined in quadrant 3.
The function increases exponentially.
From the above two, we can say that the function is not a logarithm.
Now, the function f(x) crosses the y-axis at (0, -3).
Looking at the options, if we place 0 for x in the last option, we will have:
y = e⁰ - 4
⇒ y = 1 - 4
y = -3
The value of y corresponds with the given (0, 3) coordinate and as such option D is the correct answer.
The missing options are correctly;
y = ln x - 3
y = ln x - 4
y = eˣ - 3
y = eˣ - 4
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It's A) y=In x-3
I took the test, trust a brotha.
Which of these events most likely influenced the author to write "harrison bergeron"?.
The event which influenced and inspired the author to write "Harrison Bergeron" was his previous work on Cat's Cradle.
What is Harrison Bergeron?Harrison Bergeron is a dystopian science-fiction literary work that was authored by an American writer called Kurt Vonnegut and it was centered around achieving total equality among American citizens.
This science-fiction short story was first published in October 1961 on "The Magazine of Fantasy and Science Fiction."
The inspiration for Harrison Bergeron.Furthermore, the event which most likely influenced and inspired the author to write "Harrison Bergeron" was his previous work on Cat's Cradle.
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Which of the following statements best encapsulates the author’s line of reasoning in the passage?.
The statement that best encapsulates the author’s line of reasoning in the passage is; A: America's boys are broken
Authors' Line of ReasoningThis author begins his narration with the claim that " “America’s boys are broken. And it’s killing us.”
Now, the author used that phrase to capture the audience attention by by making a startling claim about the killing of American boys.
Finally throughout the book, we can say that what encapsulated the author's line of reasoning is that "America's boys are broken".
The missing options are;
A) “America’s boys are broken. And it’s killing us.” (paragraph 1)
B) “The past 50 years have redefined what it means to be female in America.” (paragraph 3, sentence 1)
C) “They’ve absorbed the message: They’re outperforming boys in school at every level.” (paragraph 3, sentence 3)
D) “To be a girl today is to be the beneficiary of decades of conversation about the complexities of womanhood, its many forms and expressions.” (paragraph 3, sentence 5)
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In the mid-1800s, why did most northerners want the kansas and nebraska territories organized? to protect the institution of slavery to balance the number of free and slave states to create more free states so they could control congress to provide farm land and extend the transcontinental railroad.
Answer: The correct answer is C)
The explanation did most Northerners and Southerners disagree about the Kansas-Nebraska Act?
Northerners and Southerners disagreed about the Kansas Nebraska act because the law established the territories of Kansas and Nebraska and gave the residents the right to decide whether to allow slavery. ... Where did Lincoln and Douglas each stand on slavery?
In the mid-1800s, most northerners wanted the Kansas and Nebraska territories organized: C. to create more free states so they could control congress.
What is the Kansas-Nebraska Act?The Kansas-Nebraska Act refers to an act of Congress that officially annuled the Missouri Compromise and led to the establishment of the territories of Kansas and Nebraska on the 30th of May, 1854.
The main purpose for the passage of the Kansas-Nebraska Act was to create more free states and enable settlers in each territory to decide by voting on the issue of whether to permit slavery within their borders or not, as well as control congress..
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Can living things serve as an indicator of exposure.
Find δrh for the combustion of biphenyl in kj mol−1 at 298 k.
The [tex]\mathbf{\Delta _rH }[/tex] of combustion of biphenyl is -6312.8 kJ/mol.
What is the enthalpy change of a reaction?The enthalpy change of a reaction is denoted by ΔHrxn and it is the disparities in the enthalpy between the product vs the reactant.
Since there is limited information in the question, Let's assume that:
When 0.5141 g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 25.823 °C to 29.419 °C.The heat gained by the calorimeter:
[tex]\mathbf{q_{cal} = C \times \Delta T}[/tex]
where;
C = heat capacity of the bomb calorimeter = 5.861 KJ/ °C[tex]\mathbf{q_{cal} = 5.861 \times (29.419 -25.823)}[/tex]
[tex]\mathbf{q_{cal}= 21.076 \ kJ}[/tex]
[tex]\mathbf{q_{rxn}= -q_{cal} = -21.076 \ kJ}[/tex]
The change in the internal energy is:
[tex]\mathbf{\Delta U_r = -21.076 \times \dfrac{154}{0.5141}} \\ \\ \\ \mathbf{\Delta U_r = -6313 \ kJ/mol}[/tex]
In a Bomb calorimeter, the chemical reaction of biphenyl can be computed as:
[tex]\mathbf{C_{12}H_{10}_{(s)} + \dfrac{27}{2}O_{2(g)} \to 12 CO_{2 (g)} + 5 H_2O_{(g)}}[/tex]
The number of moles (n) in the chemical reaction is:
[tex]\mathbf{= (12+5) - \dfrac{27}{2}}[/tex]
= 3.5
Therefore, [tex]\mathbf{\Delta _rH = \Delta E + \Delta nRT}[/tex]
[tex]\mathbf{\Delta _rH = (-6313 +3.5 \times 8.314 \times 10^{-3} \times 3.596 )}[/tex]
[tex]\mathbf{\Delta _rH = -6312.8\ kJ/mol}[/tex]
Therefore, we can conclude that the [tex]\mathbf{\Delta _rH }[/tex] of the combustion of biphenyl is -6312.8 kJ/mol.
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Which refers to the passing of a wave through an object.
Answer:
Transmission
Explanation:
I know it's right.
Examine this system of equations. Which numbers can be multiplied by each equation so that when the two equations are added together, the y term is eliminated? one-fourth x minus one-sixth y = 5 four-fifths x + startfraction 3 over 8 y endfraction = 10 18 times the first equation and 8 times the second equation –18 times the first equation and 8 times the second equation 8 times the first equation and 6 times the second equation –8 times the first equation and 6 times the second equation.
Answer:
the hell
Explanation:
Answer:
Its A
Explanation:
Which of the following are the three largest categories of federal government spending?.
Answer:
Federal government spending in the United States can be broken down into three general categories: mandatory/entitlement spending, discretionary spending, and interest on government debt.
If the ph of a solution is decreased from 10 to 8, it means that the.
Answer:
The solution is more acidic and is closer to become neutral.
Explanation:
Acidic level: 0 - 6
Neutral: 7
Alkaline level: 8 - 14
From this, we can see that the given solution went from a higher alkaline concentration level to a lower one.
Which excerpt from "the treasure of lemon brown" would provide strong evidence that greg feels upset and resentful at the beginning of the story? the dark sky, filled with angry, swirling clouds, reflected greg ridley’s mood as he sat on the stoop of his building. His father’s voice came to him again, first reading the letter the principal had sent to the house, then lecturing endlessly about his poor efforts in math. Report cards were due in a week, and greg had been hoping for the best. But the principal had ended the suspense early when she sent the letter saying greg would probably fail math if he didn’t spend more time studying. There was a room a few feet from the door, and from where he stood in the entrance, greg could see a squarish patch of light on the floor. He entered the room, frowning at the musty smell. It was a large room that might have been someone’s parlor at one time. From this spot he could see the blinking neon sign over the bodega on the corner. He sat a while, watching the sign blink first green then red, allowing his mind to drift to the scorpions, then to his father.
People often feel different kinds of emotions. The option that gives strong evidence that Greg feels upset and resentful at the beginning of the story is that;
The dark sky, filled with angry, swirling clouds, reflected Greg Ridley’s mood as he sat on the stoop of his building. His father’s voice came to him again, first reading the letter the principal had sent to the house, then lecturing endlessly about his poor efforts in math.What is the treasure of lemon brown about?This story centers around a boy name Greg, who wants to always playing basketball, but his dad is strongly against it and he told him to quit and be focus on pursuing his studies.
From the story, we can see that Greg realized the importance of family and he knew his father is scolding him because he wants the best for him and love him a lot.
Conclusively, option A is correct.
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Answer:
it A
Explanation:
Please communicate the following information to the customer in both a casual voice, and a professional voice. 1. Greet the customer and thank them for contacting our company 2. Let the customer know their order has been delayed, as caused by a severe blizzard on the east coast. 3. Express sympathy for the inconvenience caused. 4. Let them know that they can call customer support 8a - 8p est, mon - fri: 555-555-5555 5. Sign off.
There are different ways to convey a message. In companies they generally treat their clients with a formal professional language.
What is formal professional language?Formal language is a term that refers to a type of language that is characterized by:
Convey a message the careful way.Include planned and correct sentences.It is generally used in social or work occasions.What is informal language?Informal language is the form of communication that we generally use in our daily routine. Casual and colloquial words are included in this language.
According to the above, the formal communication with the client would be as follows:
Good morning, my name is Wilson Smith, thank you for contacting our company. How can I help you?At the moment, I can inform you that your order has a delay in delivery due to adverse weather conditions on the East Coast, so we have not been able to ship your product.On behalf of the company we ask for an excuse and we promise to solve this inconvenience as soon as possible.Finally, we invite you to contact our customer service lines to find out the status of your order in a 12-hour time slot between 8am and 8pm from Monday to Saturday. The line number is 555-555-5555 5.Thanks for getting in touch, and have a nice day.Learn more about communication in: https://brainly.com/question/18100115
Which statement is correct about the thermal energy of gas?.
Gas's kinetic and potential energy are added to form its thermal energy. Because gas has very little potential energy, its only thermal energy is its kinetic energy.
What is kinetic energy?Kinetic energy is defined as a type of energy that a particle or object has because of motion. In comparison to other fundamental states of matter, plasma has the highest kinetic energy. This is due to the fact that particles in a plasma travel more quickly than those in a corresponding solid, liquid, or gas.
The sum of all the particles' kinetic energies determines the overall thermal energy of a gas. You should keep in mind that it is incorrect to equate thermal energy with heat. Similar to work, heat is a means of transferring energy.
Thus, Gas's kinetic and potential energy are added to form its thermal energy. Because gas has very little potential energy, its only thermal energy is its kinetic energy.
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You mix 2 moles of hbr with 3 moles of koh in enough water to make 1 l of solution. What is the ph of your final solution?.
Taking into account the definition of pH and pOH, limiting reagent and reaction stoichiometry, the pH of the final solution is 14.
Limiting reagent and excess of moles.Hydrobromic acid and potassium hydroxide react in a 1:1 mole ratio to produce aqueous potassium bromide and water, following the reaction:
HBr + KOH → KBr + H₂O
So, if you mix equal numbers of moles of each reactant, both the acid and the base will be completely consumed.
But in this case you mix 2 moles of HBr with 3 moles of KOH.
The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
In this case, as the reaction has a 1:1 mole ratio hydrobromic acid will act as the limiting reagent, and it will be completely consumed before all the moles of potassium bromide are consumed, so there will be an excess of moles of potassium bromide.
After the reaction is complete, the resulting solution will contain an excess of moles of potassium bromide calculated as, considering that when 2 moles of hydrobromic acid are consumed, 2 moles of potassium hydroxide are consumed:
3 moles that you had at the beginning of the reaction - 2 moles that react= 1 mole of potassium bromide
Definition of molarityMolarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.
The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:
[tex]Molarity= \frac{number of moles}{volume}[/tex]
Molarity of potassium bromideIn this case you know:
number of moles= 1 mole of potassium bromidevolume= 1 LSo, the concentration of potassium bromide is calculated as:
[tex]Molarity= \frac{1 mole}{1 L}= 1 \frac{mole}{L}[/tex]
Definition of pHpH is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.
The pH is defined as the negative base 10 logarithm of the activity of hydrogen ions, that is, the concentration of hydrogen ions or H₃O⁺:
pH= - log [H⁺]= - log [H₃O⁺]
Definition of pOHpOH is a measure of hydroxyl ions in a solution and is expressed as the logarithm of the concentration of OH⁻ ions, with the sign changed:
pOH= - log [OH⁻]
Relationship between pH and pOHThe following relationship can be established between pH and pOH:
pOH + pH= 14
Calculation of pH in this caseIn this case, the concentration of hydroxide anions are delivered to the solution by the potassium hydroxide in a 1:1 mole ratio.
So, being the concentration of potassium bromide 1 [tex]\frac{mole}{liters}[/tex], the concentration [OH⁻]= 1 [tex]\frac{mole}{liters}[/tex].
Replacing in the definition of pOH, then the pOH is:
pOH= - log 1 [tex]\frac{mole}{liters}[/tex].
Solving:
pOH= 0
Finally, replacing in the relationship between pH and pOH:
pH + 0=14
pH=14
In summary, the pH of the final solution is 14.
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Which explanation can be used to informally derive the formula for the volume of a cylinder?.
The explanation that can be used to informally derive the formula for the volume of a cylinder is: The volume of a cylinder can be found by using the volume of a triangular prism, however, instead of using the base length of the triangle, use the radius of the cylinder.
What is the formula for the volume of a cylinder?The formula for the volume of a cylinder can be obtained with the formula:
∨ = πr²h
This is similar to the volume of a triangular prism, which is given by:
The Area of the base triangle × Height.
However, in the case of the volume of a cylinder, the base length of the triangle is not used. The radius of the cylinder is used.
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Which description is correct for the polynomial −5x2−3x+3?.
Answer:
polynomial is an expression consisting of indeterminates (also called variables) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables
Explanation:
...
Which of the following chemicals was not used to stain this tissue.
Which of the following is not an advantage of decision making.
Less time spent making a decision.
______________________________
Alex’s fica tax is 7. 65% of her earnings of $425. 78 per week. How much fica tax should his employer withhold?.
Answer:
$32.57
Explanation:
$425.78 x 7.65% = $32.57
Answer: $32.57
Hope this helps :)
How might the ideas about equality expressed in the declaration of independence.
