The heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
What is heat?Heat is the transportation of energy to or from a thermodynamic system.
By the formula of heat
[tex]\rm (n) \times (delta\;Hrxn) = (qrxn)[/tex]
Where n = moles
Delta Hrxn is molar heat
q = heat
Putting the values in the equation
[tex]\rm qrxn = (2.8 mol) \times(25.7 kJ/mol) = 71.96 kJ[/tex]
Thus, the heat absorbed when 2.8 mol NH₄NO₃ is dissolved in water is 71.96 kJ.
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A brick is dropped from rest from a height of 4. 9 m. how long does it take the brick to reach the ground?
Answer:
1.0 s
Explanation:
Anyone needs help with any assignments
nah, im currently grinding a bunch rn and its like 2am
Answer:
what is 9/3-6+81=
and this is for math
Which three parts of this excerpt from frankenstein show that the creature is innocent and helpless like a newborn child when it first appears in the novel?
Answer: “and it was, indeed, a long time before I learned to distinguish between the operations of my various senses”, “I knew, and could distinguish, nothing; but feeling pain invade me on all sides, I sat down and wept.”, and “Sometimes I wished to express my sensations in my own mode, but the uncouth and inarticulate sounds”
Explanation:
The parts of this excerpt from Frankenstein that show that the creature is innocent and helpless like a newborn child when it first appears in the novel are
A. and it was, indeed, a long time before l learned to distinguish between the operations of my various sensesB. l was obliged to shut my eyesWhat is Frankenstein"Frankenstein" is a novel written by Mary Shelley, first published in 1818. The full title of the novel is "Frankenstein; or, The Modern Prometheus." It is a work of science fiction, horror, and Gothic literature that has become a classic of English literature.
The novel tells the story of Victor Frankenstein, a young scientist who becomes obsessed with the idea of creating life. He succeeds in creating a living being using various scientific methods and reanimated body parts.
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see text below
Which parts of this excerpt from Frankenstein show that the creature is innocent and helpless like a newborn child when it first appears in the novel?
Frankenstein
by Mary Shelley (excerpt)
A strange multiplicity of sensations selzed me, and I saw, felt, heard, and smelt, at the same time; and it was, Indeed, a long time before I
learned to distinguish between the operations of my various senses. By degrees, I remember, a stronger light pressed upon my nerves, so that I
was obliged to shut my eyes. Before I had quitted your apartment, on a sensation of cold, I had covered myself with some clothes; but these
were Insufficient to secure me from the dews of night. I was a poor, helpless, miserable wretch; I knew, and could distinguish, nothing; but,
feeling pain invade me on all sides, I sat down and wept. Sometimes I wished to express my sensations in my own mode, but the uncouth and
inarticulate sounds which broke from me frightened me into silence again.
A. and it was, indeed, a long time before l learned to distinguish between the operations of my various senses
B. l was obliged to shut my eyes
C. Before l had quitted your apartment, on a sensation of cold
D. l had covered myself with some clothes
E. l knew and could distinguish nothing but feeling pain invade me on all sides l sat down and wept.
F. sometimes l wished to express my sensations in my own mode but the uncouth and inarticulate sounds
You inspect a bottle of sunscreen to see what radiation it claims to block. you are looking for sunscreen that blocks dangerous radiation from the sun but does not make claims about other types of radiation. which claim on a bottle would best meet these criteria?
The claim on a bottle would meet the criteria is Blocks all UV and infrared rays. The correct option is A.
What are UV rays?UV rays are ultraviolet rays that come from the sun. This is harmful rays which affect the skin and body.
Infrared rays have longer wavelength than visible light and UV rays have shorter wavelength than visible light.
Thus, the correct option is A, blocks all UV and infrared rays.
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Which aspect of a trend or event are you likely to emphasize in a well-written analytical research report?
An aspect of a trend or event that a researcher is likely to emphasize in a well-written analytical research report is its impact on culture.
What is an analytical research report?An analytical research report can be defined as a well-crafted and written document that is typically used by a researcher to display a detailed analysis of the information which are obtained through a particular research method.
Generally, understanding the effects of an element, event, or a trend is one of the fundamentals of an analytical research. Thus, an aspect of a trend or event that a researcher is likely to emphasize in a well-written analytical research report is its impact on culture.
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Maya is a child psychologist who believes that it is important for parents to set firm rules for their children. she feels that it is important for children to learn to obey the rules while they are young because it will teach them to self-regulate when they are adults. what criminologist from history would most likely agree with maya?
Historically, the criminologist who would most likely agree with Maya is Michael Gottfredson.
Who is Michael Gottfredson?Michael Gottfredson is a professor of criminology born on the 15th of April, 1935 in Utah, United States of America. Also, he was famously known for his general theory of crime (1990) which states that criminal actions are typically undertaken by a criminal in pursuit of his or her self-interest.
Historically, we can infer and logically deduce that the criminologist who would most likely agree with Maya is Michael Gottfredson because she believes it's very important for parents to set firm rules for their children, so as to mitigate criminal self-interest in them.
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What did the supreme court say in its ruling in regents of the university of california v. bakke (1978)? affirmative action programs do not violate the constitution. racial quotas are necessary to correct for past discrimination. the constitution forbids any government policy that uses a racial classification. even states without official segregation policies must take steps to integrate their schools.
In the ruling by the supreme court in regents of the university of california v bakke ( 1978 ) : ( A ) affirmative action programs do not violate the constitution
Regents of the university of california v. bakke (1978)In the ruling the supreme court ruled that the use of affirmative action programmes which allows the admission of minority applicants in the universities is a constitutional process in certain circumstances, while the use of racial quotas for the admission into universities was ruled as unconstitutional.
Hence we can conclude In the ruling by the supreme court in regents of the university of california v bakke ( 1978 ) : ( A ) affirmative action programs do not violate the constitution
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Answer:
Explanation:
Affirmative action programs do not violate the Constitution.
Explain the effect a change in temperature, volume, and pressure has on gas particles. then explain if these changes are an example of a direct or an inverse relationship.
The increase in pressure, with volume constant will increase the temperature. The increase in volume, with pressure constant will increase the temperature. The increase in pressure, with temperature constant will decrease the volume.
What are pressure, temperature and volume?These three are the characteristics of a gas. A gas is always in some pressure, having some volume and temperature.
According to the ideal gas law,
pV =nRT
Here, p is the pressure, V is the volume, n is number of moles, R is the universal gas constant and T is the temperature.
The volume of a gas is directly proportional to its absolute temperature when pressure is constant, according to Charles's law.
The volume of a gas is inversely proportional to its pressure when temperature is constant according to the Boyle's law.
Hence, the increase in pressure, with volume constant will increase the temperature. The increase in volume, with pressure constant will increase the temperature. The increase in pressure, with temperature constant will decrease the volume.
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What is limit of startfraction startroot x + 2 endroot minus 3 over x minus 7 endfraction as x approaches 7? negative one-sixth 0 one-sixth dne
The value of limit of startfraction startroot x + 2 endroot minus 3 over x minus 7 endfraction when x approaches 7 is 1/6.
How to evaluate a function for a given value?To evaluate a function for a particular value, plug in the value of the variable in the function.
The expression given in the problem is,
[tex]\lim_{x \to 7} \dfrac{\sqrt{(x+2)}-3}{x-7}[/tex]
Multiply the factor √(x+2)+3 above and below of fraction,
[tex]\lim_{x \to 7} \dfrac{\sqrt{(x+2)}-3}{x-7}\times\dfrac{\sqrt{(x+2)}+3}{\sqrt{(x+2)}+3}\\\lim_{x \to 7} \dfrac{\sqrt{(x+2)}^2-3^2}{(x-7)(\sqrt{(x+2)}+3)}\\\lim_{x \to 7} \dfrac{x+2-9}{(x-7)(\sqrt{(x+2)}+3)}\\\lim_{x \to 7} \dfrac{x-7}{(x-7)(\sqrt{(x+2)}+3)}\\\lim_{x \to 7} \dfrac{1}{\sqrt{(x+2)}+3)}[/tex]
The value of x tents to 7. Thus,
[tex]}\dfrac{1}{\sqrt{7+2)}+3}\\[/tex]
1/(3+3)=1/6
Thus, the value of limit of startfraction startroot x + 2 endroot minus 3 over x minus 7 endfraction when x approaches 7 is 1/6.
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Answer:
c 1/6
Explanation:
joseph flips a fair coin and rolls a fair number cube with sides numbered 1 through 6. what is the probability that he will roll a number greater than 4 and the coin will land on heads
Answer:
[tex]\frac{1}{6}[/tex]
Explanation:
Since both the events do not affect each other, they are independent. We are looking for the probability that both events happen, so we multiply the probabilities of each event.
The probability of rolling number greater than four would start with a denominator of 6 since there are 6 equally likely outcomes. The favorable outcomes number 2 since the only numbers greater than 4 are 5 and 6. So the probability is [tex]\frac{2}{6}[/tex] which simplifies to [tex]\frac{1}{3}[/tex].
The probability a coin would land on heads is just [tex]\frac{1}{2}[/tex] since you can get either heads or tails and there is only one favorable outcome.
Multiplying these together results in a final answer of [tex]\frac{1}{6}[/tex]
Evidence such as spectra from distant stars suggests that the universe is... what?
Hydrogen peroxide breaks down to form water and oxygen gas. which observation is evidence that a chemical reaction has occurred?
Answer:
change in amount of liquid, change in smell or color, bubbling, foaming, fizzing
Explanation:
Last year, about 2,400 people participated in a local event. this year, about 3,200 people participated. what was the approximate percent increase in participation? 25% 33% 50% 75%
The approximate percent increase in participation in a local event is 33%.
What is percentage increase?The increase in the involvement of an activity compared to the previous data expressed in percentage.
Given is the 2,400 people participated in a local event. This year, about 3,200 people participated.
Then percentage increase will be
% increase = [(3200 - 2400) / 2400 ]x 100
= 33.33%
Thus, the approximate percent increase in participation in a local event is 33%.
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Angelo has $700,000 he wants to save. if the fdic insurance limit per depositor, per bank, is $250,000, which of these ways of distributing his money between three banks will guarantee that all of his money is insured?
The amount of $700,000 is advisable to be deposited in three different banks for safety of Angelo's money.
What is a bank deposit?A deposit of money made with a bank to earn returns in the form of interest on such money is known as a bank deposit. The banks insure such deposits up to a certain limit, say $250,000.
Angelo can distribute his money into three different banks, with each deposit not exceeding $250,000 to ensure the safety of his bank deposits.
Hence, the way to insure the safety of Angelo's money via bank deposit is aforementioned.
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What happened to change the water quality in flint?(1 point)
Answer:
The Flint water crisis was a public health crisis that started in 2014 and lasted until 2019, after the drinking water for the city of Flint, Michigan was contaminated with lead and possibly Legionella bacteria
Explanation:
Arrange the steps describing how a wind turbine functions to provide electricity to homes and businesses.
Wind turbines generate electricity by following a simple principle. Moving wind transfers energy to the blades of the windmill, which results in spinning of the blades. These blades are connected to an internal shaft which also starts spinning. This spinning of the shaft generates electricity, which is further distributed to electrical substations to provide electricity to homes and businesses.
What is a wind turbine?Wind turbines work by creating kinetic energy when the power of the wind makes their blades spin. This kinetic energy is converted into electrical energy.
Thus, the steps describing how a wind turbine functions are,
Step 1: Wind moves the blades of the turbine.
Step 2: Internal shaft spins
Step 3: Generator produces electricity
Step 4: Distribution lines carry electricity to substation
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Which theme best connects to this excerpt? human beings learn from nature. silence is a powerful tool. evil can never truly hide itself. strength comes from trials.
The theme which best connects to this excerpt is; evil can never truly hide itself.
What is a theme?A theme also known as main idea or central idea of a text refers to the important message an author is trying to convey in a text.
The theme "evil can never truly hide itself" depicts that evil doesn't go into hiding forever, good will always prevail over it.
Therefore, the correct answer is; evil can never truly hide itself.
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Answer:
C
Explanation:
evil can never truly hide itself.
Read this first sentence of a passage summary: when hot magma heats trapped underground water, the water can explode from the ground in the form of a geyser. based on the information in the passage, which sentence would best complete the summary?
The sentence that would best complete the summary is There are two famous geysers in Yellowstone National Park, they are named Old Faithful and Steamboat Geyser.
What is Magma?Magma is known to be a very hot, molten rock that can be found under the earth crust as it is said to exist in the mantle.
Note that The sentence that would best complete the summary is There are two famous geysers in Yellowstone National Park, they are named Old Faithful and Steamboat Geyser.
See full question below
Read this first sentence of a summary of the
passage
When hot magma heats trapped underground
water, the water can explode from the ground in
the form of a geyser.
Based on the information in the passage, which
sentence would BEST complete the summary?
There are two famous geysers in Yellowstone
National Park, they are named Old Faithful and
Steamboat Geyser.
Because of changes in water temperature, geysers
are becoming less predictable and their numbers
are decreasing worldwide.
One famous American geyser erupts with such
regularity that it is named Old Faithful, but due to
shifting magma, geysers are generally,
unpredictable
Drilling for geothermal power has released so much
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Fill in the blank with the correct subjunctive form of the verb in parentheses. mi padre quiere que nosotros _____ (asistir) a la iglesia. asistimos asistemos asistamos
Answer:
C) Asistamos
Explanation:
Edge
Revise sentence 3 by adding the correct verb form. the underground railroad a network of hiding places.
Answer:
Was
Explanation:
The correct form of the verb used in the above sentence is "Was".
What is Verb?A verb is a word that, depending on its syntax, often denotes an event, an action, or a state of being. The infinitive, with or without the verb too, is the fundamental form in the typical description of English. Verbs are inflected in several languages to represent tense, aspect, mood, and voice.
The complete sentence is - "The underground railroad was a network of hiding places." Was is the past tense suggestive form of be, which means "to exist or live," and it may be used in both the first and third person singular (I, he/she, it). When discussing reality and established facts, you utilize the past indicative.
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Which expression represents 10 times the sum of a number and 4?
What other questions might a crime scene investigator have about the remains that cannot be answered by bones alone?
In spanish write a letter to your grandmother, you are telling her about what five of your friends or family members are doing today.
Answer:
no
Explanation:
that would be plagiarism
A box shaped like a rectangular prism has a volume of 280 in^3
Based on the calculations, the width and height of this rectangular prism are 7 inches and 10 inches respectively.
How to calculate the volume of a rectangular prism?Mathematically, the volume of a rectangular prism can be calculated by using this formula:
V = L × W × H
Where:
L is the length.H is the height.W is the width.Given the following data:
Length = 4 in.
Width = (n + 2) in.
Height = (n + 5) in.
Substituting the given parameters into the formula, we have;
280 = 4 × (n + 2) × (n + 5)
280 = 4 × (n² + 7n + 10)
60 = n² + 7n + 10
n² + 7n - 60 = 0
(n - 5)(n + 12) = 0
Therefore, n = 5 or -12.
For the width, we have:
Width = n + 2
Width = 5 + 2
Width = 7 in.
For the height, we have:
Height = n + 5
Height = 5 + 5
Height = 10 in.
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Complete Question:
A box shaped like a rectangular prism has a volume of 280 in³. Its dimensions are 4 in. by (n + 2) in. by (n + 5) in. Find n.
Dr. smithe is designing a study to investigate whether aggressive preschoolers are likely to become aggressive adolescents. dr. smithe should use
According to the research, Dr. Smithe should use naturalistic observation to investigate aggressive preschoolers.
What are naturalistic observations?It is a method used in research and whose basis is to observe the subjects in the place where they live, without the researcher being disturbed in the least.
This allows detailing the behavior of the subjects that we record is what, in fact, the behavior that should happen in their habitat, under those conditions, obtaining real results, without any type of alteration.
Therefore, we can conclude that according to the research, Dr. Smithe should use naturalistic observation to investigate aggressive preschoolers.
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In which pair of numbers is the first number divisor of the second number
The pair of numbers that the first number is a divisor of the second number is; A: 27, 9
How to find number pairs?The pairs of numbers are missing and they are;
27, 9
25, 6
8, 72
52, 3
Now, we want to find the pair of numbers that the first number is a divisor of the second number.
Looking at the given pairs, the only one where the first number is a divisor of the second number is 27, 9 simply because 9 is a multiple of 27.
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Which term best describes the way the passage is organized the european
Answer:
can you put the choices
Explanation:
thanks
By law, manufacturers and distributors are responsible for providing safety data sheets. who else is responsible for providing safety data sheets? select the best option. managers workers importers employers
By law, the other persons that are responsible for providing safety data sheets (SDSs) are: C. importers.
What is a Safety Data Sheet (SDS)?A Safety Data Sheet (SDS) can be defined as a text-based document which is developed to provide more information with respect to the chemical and physical properties of an equipment, chemical compound, or substance, based on the following:
FlammabilityTemperatureRadioactivityBy law, the people that are responsible for providing safety data sheets (SDSs) are:
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Select the correct answer. what is the value of x in the triangle? an isosceles right triangle with two legs of length 10 and hypotenuse of length x a. b. c. d. e.
Answer:
[tex]10\sqrt{2}[/tex]
Explanation:
There is a diagram attached which models the situation.
Since the given triangle is right, we are able to use the Pythagorean Theorem, which states when a and b are the legs of a right triangle and c is the hypotenuse:
[tex]a^{2} + b^{2} = c^{2}[/tex]
We can plug in the given values. Since both legs have a value of ten, we can say:
[tex]10^{2} + 10^{2} = c^{2}\\100 + 100 = c^{2}\\200 = c^{2}\\c = \sqrt{200}[/tex]
We can split 200 into 100 x 2, and [tex]\sqrt{100 }[/tex] is 10, so [tex]\sqrt{200} = 10\sqrt{2}[/tex]
Another way to do this use the given of the triangle being isosceles right. In an isosceles right triangle, the hypotenuse is always [tex]\sqrt{2}[/tex] times the base. So a triangle with legs 10 would have a hypotenuse of [tex]10\sqrt{2}[/tex].
Answer:
3
Explanation:
Mental states that involve problems perceiving reality and problems with thinking and feeling are called:
Mental states that involve problems perceiving reality and problems with thinking and feeling are called psychosis.
What is psychosis?Psychosis is defined as a psychological or mental disorder which involve problems with perceiving reality and problems with thinking and feeling.
The symptoms of Psychosis include:
agitation, hostility, hyperactivity, deficiency of speechrapid and frenzied speaking.Therefore, mental states that involve problems perceiving reality and problems with thinking and feeling are called psychosis.
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