The positions of the peaks and dips in its spectrum provide evidence about the ELEMENTAL COMPOSITION of an object. Each element can absorb light at determined wavelengths.
Each element can absorb light rays at determined wavelengths because elements are composed of different atoms.
Spectroscopy is a field of study focused on the interaction between the atoms of an element and electromagnetic radiation as a function of the wavelength.
This field (spectroscopy ) studies the absorption and emission spectra of light by matter, which can be used to determine the elemental composition of an object.
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The house un-american activities committee targeted brainly.
Answer:
?
Explanation:
Alyssa is 12 years older than her sister, bethany. The sum of their ages is 44. Find their ages.
Carbon cycles through the biosphere in all of the following except.
Answer:
Carbon cycles through the biosphere in all of the following processes EXCEPT: photosynthesis, transpiration, burning of fossil fuels, or decomposition of plants & animals
Why are rules significant in writing molecular structures.
Answer:
Chemical structure determines the molecular geometry of a compound by portraying the spatial arrangement of atoms and chemical bonds in the molecule. This provides chemists with an important visual representation of a chemical formula.
Which of the following would have the largest concentration of chloride ions in solution.
Answer:
From the given options, the solution of 0.10M AlCl₃ is the one that has the highest concentration of chloride ions.
To know which of the given solutions has the highest concentration of chloride ions, we must evaluate each of them.
1) 0.10 M MgCl₂
We can see that in 1 mol of MgCl₂, we have 1 mol of Mg²⁺ and 2 moles of Cl⁻ ions, so if the initial concentration of MgCl₂ is 0.10 M we have:
Hence, in this solution we have 0.20 M of chloride ions.
2) 0.10 M AlCl₃
In 1 mol of AlCl₃, we have 1 mol of Al³⁺ and 3 moles of Cl⁻, so the concentration of Cl⁻ is:
Then, the concentration of chloride ions in this solution is 0.30 M.
3) 0.05 M CaCl₂
We can notice that in 1 mol of CaCl₂ we have 1 mol of Ca²⁺ and 2 moles of Cl⁻. The concentration of Cl⁻ is:
So, the concentration of the Cl⁻ ions is 0.10 M.
4) 0.10 M LiCl
In this case, in 1 mol of LiCl we have 1 mol of Li⁺ and 1 mol of Cl⁻, so the concentration of the chloride ions is:
Hence, in this solution the concentration of the Cl⁻ ions is 0.10 M.
Therefore, the solution 0.10M AlCl₃ has the highest concentration of chloride ions.
Explanation:
i hope this helps!
Water is being pumped from a large lake to a reservoir.
Answer:
Water is being pumped from a large lake to a reservoir 25 m above at a rate of 25 L/s by a 10-kW (shaft) pump. If the irreversible head loss of the piping system is 5 m, determine the mechanical efficiency of the pump.
Explanation:
hope it help u
itz by Riddhi
Two scientists want to compare their research of fireflies. Which information must the two scientists provide to each other to determine if they studied the same type of fireflies?.
Answer:
the species name of firefly studied
Read the passage from when birds get flu and cows go mad! by john diconsiglio. Perhaps the best news about mad cow is that people do not catch it easily. Chances are, millions of people have eaten infected beef. But, for reasons scientists still do not understand, only about 150 people have gotten vcjd and died from it. The tone of the passage is anxious. Excited. Reassuring. Unhappy.
Answer:
anxious
Explanation:
that's that I think at least
The tone of the passage is Reassuring. Check more about tone below.
What does reassuring means?The term reassuring is one that means to restore hope or confidence in a particular thing or outcome.
Conclusively, Note that in the text, The tone of the passage is Reassuring. because the author stated that "the best news about mad cow is that people do not catch it easily", therefore assuring the people.
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In sentence 6 (reproduced below), the writer is considering deleting the underlined text. However, strong evidence indicates that this event did not inspire the poem and that the author was in fact sarah josepha hale, not roulstone. Should the writer keep or delete the underlined text?.
Based on the information given, the correct option will be C. Keep it, because it previews the way the rest of the passage will support the thesis about Hale's authorship with evidence.
From the question, it was stated that one should show what the author should do with the underlined text.
The underlined text is important as it gives a preview of the passage. It's also used as supporting evidence to the claim of Hale.
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How many points of intersection are there between the graphs of the hyperbola and ellipse?
3x2 + 4y2 + 3x – 2y+3 = 0
322 – 2y2 + 3x – y +3=0
0
2
3
4
Answer:
4
Explanation:
Two congruent squares are shown in figures 1 and 2 below.
In nature during a 24 hour period green plants continuously use.
Answer:
Carbon Dioxide, or CO2
Explanation:
Plants need to breathe, otherwise they won't survive
Humans' intake oxygen and exhale CO2
However, plants intake CO2 and exhale oxygen
How does the description of elisa’s daily routine support the author’s claim that the fast food industry seeks out teenage employees? it provides anecdotal evidence of a teenage fast food employee living like an adult. It provides analogical evidence to compare the efficiency of teenagers and adults. It provides statistical evidence of what an average fast food employee experiences. It provides testimonial evidence to describe employee abuse in the fast food industry.
There are different ways to support a claim. The description of Elisa’s daily routine support the author’s claim that It provides anecdotal evidence of a teenage fast food employee living like an adult.
The excerpt was gotten from the drama, Fast Food Nation. This was a 2006 comedy-drama film. The film was directed by Richard Linklater and its writers were Linklater and Eric Schlosser.
There are a lot of criticism of fast food industry. There are the claims of negative health effects, children targeted marketing etc. Due to the fact that Teenagers are often used in fast food sales, they tend to grow into it quickly and gradually begins to behave and live like adult.
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Answer:
its A
Explanation:
bc i looked it up
Write a function called has_duplicates that takes a string parameter and returns true if the string has any repeated characters. Otherwise, it should return false.
The function to solve the algorithm that is required to return Boolean (True of False) if the parameter contains duplicate character will be implemented using the Kotlin Programming Language.
// Here is the algorithm
fun has_duplicates (parameter: String) : Boolean{
for (i in parameter.size-1){
if(parameter[i]==parameter[i+1]){
return true
} else{
return false
}
}
}
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The writer wants to start the third paragraph (sentences 10-14) with a sentence that captures what the different claims and evidence in the paragraph are meant to show. Which of the following sentences should the writer add immediately before sentence 10 to achieve this goal?.
Transition words are those words or phrases which are used to link ideas across paragraphs or inside a given sentence and this helps the reader to understand that the ideas in one paragraph are further explained.
Some examples of transition words includes:
HoweverButThereforeWithout much adoFurthermore, etcWith this in mind, if a person wants to properly capture the different claims and evidence which a paragraph is meant to show, then this would be to make use of transition words and also give relevant information.
Please note that your question is incomplete so I gave you a general overview so that you could get a better understanding of the concept.
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Place the events that form hurricane-force winds in order.
Answer: The events that form hurricane-force winds are as follows
1. Tropical disturbance
2. Tropical depression
3. Tropical storm
4. Hurricane.
Explanation:
All of the above-mentioned events happen in chronological order for the hurricane-force winds to occur.
1. Tropical disturbance occurs from the tropics and the subtropics. These are generally 100-300 miles in diameter. It is a tropical weather system of organized conventions. This is the first stage that consists of a loosely organized low-pressure area.
2. Tropical depression is a more organized deep convention and has a closed circulation of sustained winds of less than 39 mph.
3. Tropical storm is the third stage that has sustained winds between 39 - 73 mph.
4. The hurricane is created when the sustained winds finally reach or cross the speed of 74 mph.
This is how hurricane-force winds are created.
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Which statement describes the system of equations 3x-4y=-35.
Answer:
The system of equations is one solution.
Which of the following correctly describes the effect of sympathetic division of ans on the cardiac activity.
Answer:
The statement 'sympathetic nervous system activation constricts arteries found within the salivary glands' describes the activation of autonomic nervous system function in the circulatory system
The time that customers wait to be served at the deli for a grocery store follows the uniform distribution between 0 and 7 minutes. What is the probability that a randomly selected customer will wait more than 4 minutes at the deli?.
The probability that a randomly selected customer will wait more than 4 minutes at the deli is given below
The probability that a randomly selected customer will wait more than 4 minutes = [tex]0.4286[/tex]The waiting time for the customers is uniformly distributed between 0 - 7 minutes
Consider a random variabe X that represents the waiting time of customers and uniformly distributed between 0-7 minutes
Therefore, the density function of X is determined as
[tex]f(x) = \frac{1}{b-a}\\\\f(x) = \frac{1}{7-0}\\\\f(x) = \frac{1}{7}[/tex]
The probability that the customer will wait more than 4minutes,
[tex]P(X>4) = \int\limits^7_4 f{x} \,dx\\\\= \int\limits^7_4 \, \frac{1}{7}dx\\\\= \frac{1}{7} * [x]^7_4\\\\= \frac{7-4}{7} \\\\= 0.4286[/tex]
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A particle moves along the curve y = 4x2 + 1 in such a way that the x value is increasing at the rate of 2 units per second. At what rate is y changing when x = 1?.
By differentiating both sides of y = 4x² + 1 with respect to time t, we have
dy/dt = 8x dx/dt
If the x value changes at a rate of +2 units/second (that is, dx/dt = 2) at the moment x = 1, then the y value changes at a rate of
dy/dt = 8 • 1 • 2 units/s = 16 units/s
A 1. 5-kilogram lab cart is accelerated uniformly from rest to a speed of 2. 0 meters per second in 0. 50 second. What is the magnitude of the force producing this acceleration?.
The magnitude of the force producing this acceleration is found to be 3.0 N.
What is Force?Force may be defined as the process of pushing and pulling an object with an appropriate mass in order to cause it to change its velocity with respect to time.
Force is a vector quantity as it has both magnitude and direction. Force is an external agent which is generally capable of changing a body's state of rest or motion with respect to time.
According to the question,
The total mass of an object = 1.5 kg.
The speed of an object = 2.0 m/sec.
So, the formula for calculating the magnitude of the force is as follows:
Force = Mass × Acceleration.= 1.5 kg × 2.0 m/sec = 3.0 N.
Therefore, the magnitude of the force producing this acceleration is found to be 3.0 N.
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Which of the following statements is true of using internet of things devices in your home.
The internet of things is a concept whereby multiple devices get to connect and share data from a common repository. The Internet of Things refers to a network of physical devices that use sensors, software, and connectivity to share data.
Here are valid statements regarding the internet of things
Has greater Transparency Greater control Greater performanceExample of the application os internet of things
Smart refrigerators, smart watches, smart fire alarms, smart door locks, smart cities, medical sensors, fitness trackers, smart homes
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Who is cleopatra in the caesars sportsbook commercial.
The person that played the role of cleopatra in the caesars sportsbook commercial is; Halle Berry
Caesers sportsbook commercial is an advert commercial that shows a lady dressed in a metallic gold gown and a jeweled headdress acting as Cleopatra.
She also was adorned in dark make-up with coal-lined eye style and also a golden eye shadow. This are all synonymous to how cleopatra who was a queen in egypt in the year 69 BC used to dress.
The video commercial lasted for 30 seconds and this lady that acted the role of cleopatra is Halle Berry.
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a mid-ocean ridge is located at the boundary of two tectonic plates which diagram correctly models the relative plate motion on each side of a mid-ocean ridge
Thank you for sharing this question, if you could please add a file or pictures of the answers I'll be happy to help.
Which disease is caused by a buildup of plaque in blood vessels brainly.
How critical thinking and problem shoving skills will help you in your early children education career ?
Answer: It will help them make better andmore mature choices in life.
Explanation:
Amylase is an enzyme that converts carbohydrate polymers into monomers. Glycogen synthase is one of the enzymes involved in converting carbohydrate monomers into polymers. Which of the following best explains the reactions of these enzymes?.
Amylase break covalent bonds whereas glycogen synthase form covalent bonds.
Amylase is an enzyme that aids in the addition of a water molecule to break covalent bonds thereby converting carbohydrate polymers into monomers whereas glycogen synthase aids in the removal of a water molecule to form covalent bonds converting carbohydrate monomers into polymers.
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Where are 2 places you can search for apps that work with quickbooks online?.
Based on the application analysis, the 2 places you can search for apps that work with QuickBooks online are QuickBooks App Store and QBO account.
The Steps to search for apps that work with QuickBooks online
Go to QuickBooks Apps.Select a specific Categories section.Click the Get app now button.In the option of the QBO account. Do the following:
Go to the Apps menu.Download the App through the category button.Hence, in this case, it is concluded that the correct answer is "QuickBooks App Store and QBO account."
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Un centro mexicano de investigación biológica.
Answer:
A Mexican center for biological investigation
Explanation:
I Translated this. It wasn’t clear what you wanted me to do.
Which image do you think best illustrates the tragedy of the fire? why? give at least three reasons for your choice in your response.
9-13 and 17
Pictures 9-13 actually show dead people, who died trying to escape the fire. These were people who had lives, families, etc. who never knew that an ordinary work day would turn tragic. The sheer number of people seen truly shows how horrific of an event this was, with their bodies being broken and lifeless.
17 shows the aftermath of the fire. What was once a busy, bustling workplace full of life was now lonely and deserted, with the ashes of equipment, clothing, and crushed memories. The scorched-black room and messy area really give off that "neglected and forgotten" feel. Even the officer contributes to the empty feel of the room, as he's the only one seen there, all alone.
Pictures 9 through 13 show actual deceased victims who perished while attempting to flee the fire. These were folks with families, lives, and other responsibilities who had no idea that a routine workday would end tragically.
What is Fire?The observable result of the combustion process, a unique kind of chemical reaction, is fire. It happens when some kind of fuel and atmospheric oxygen are combined. The end result of the chemical reaction is entirely distinct from the initial component.
The heat from the heat causes some of the cellulose material that makes up the wood to break down when the wood reaches about 300 degrees Fahrenheit (150 degrees Celsius).
The molecules of the complex disintegrate at a temperature of roughly 500 degrees F (260 degrees C) for wood, at which point the atoms recombine with oxygen to generate water, carbon dioxide, and other products. They burn, in other terms.
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