How could IR spectroscopy be used to distinguish between the following pair of compounds? C6H5CN vs. CH3CH2NH2.
Answers
Based on their distinctive functional groups, the two substances \(C_6H_5CN\) (benzonitrile) and \(CH_3CH_2NH_2\) (ethylamine) can be distinguished using IR spectroscopy.
Benzonitrile will show a significant absorption peak in the IR spectrum between 2230 and 2260 cm-1, which is related to the distinctive stretching vibration of the carbon-nitrogen triple bond (CN). The IR spectra of ethylamine lack this absorption peak.
The stretching vibration of the N-H bond, on the other hand, causes ethylamine to exhibit a significant absorption peak in the IR spectrum of about 3300-3500 cm-1. The IR spectra of benzonitrile do not show this absorption peak.
In a given pair of molecules, IR spectroscopy may successfully distinguish between benzonitrile and ethylamine by comparing the presence or absence of these particular absorption peaks.
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Related Questions
in the area below, write a series of chemical reactions that leads to the formation of tropospheric ozone in photochemical smog
Answers
The formation of tropospheric ozone in photochemical smog involves a series of chemical reactions primarily driven by sunlight.
Here is a simplified representation of the reactions:
Nitrogen Dioxide (NO2) reacts with sunlight (UV radiation) to produce Nitric Oxide (NO) and an Oxygen atom (O).
NO2 + UV radiation → NO + O
Nitric Oxide (NO) reacts with Oxygen molecules (O2) to form Nitrogen Dioxide (NO2) again.
NO + O2 → NO2
The Oxygen atom (O) produced in reaction 1 reacts with an Oxygen molecule (O2) to form Ozone (O3)
.O + O2 → O3Ozone (O3) can react with Nitric Oxide (NO) to form Nitrogen Dioxide (NO2) and Oxygen (O2).
O3 + NO → NO2 + O2
These reactions are part of a complex set of photochemical reactions involving various pollutants such as nitrogen oxides (NOx), volatile organic compounds (VOCs), and sunlight. The primary precursors for tropospheric ozone formation in photochemical smog are Nitrogen Dioxide (NO2) and volatile organic compounds (VOCs). The reactions outlined above represent a simplified version of the process and do not capture the full complexity of atmospheric chemistry involved in the formation of tropospheric ozone.
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a sample of ar gas has a volume of 5.10 l with an unknown pressure. the gas has a volume of 9.29 l when the pressure is 2.65 atm , with no change in temperature or amount of gas.
Answers
With no change in temperature or amount of gas, the pressure of ideal gas approximation is 4.83 atm.
We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation
P . V = n . R . T
where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.
From the question above, we know that
V1 = 5.1 L
V2 = 9.29 L
P2 = 2.65
When the initial and final temperature is the same, we can use the ratio of pressure and volume as
P1 . V1 = P2 . V2
P1 . 5.1 = 2.65 . 9.29
P1 = 4.83 atm
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the concept that explains the properties of aromatic compounds based on a structure that is an average among two possible structures is
Answers
The concept that explains the properties of aromatic compounds based on a structure that is an average among two possible structures is resonance.
We create resonant structures when we are unable to identify a particular property of a given molecule. A molecule alone may have. two or more resonant structures. You must average the two contributing structures if you want to observe the major molecule's properties (Resonating Structure).Resonance has the major effect on the bond length of the molecules.It is responsible for the stability of benzene as an aromatic compound.An example is benzene which has two resonating structures.To learn more about resonance visit:
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How many atoms of each element are in 4Na3PO4?
3 sodium, 1 phosphorus, 4 oxygen
4 sodium, 4 phosphorus, 4 oxygen
12 sodium, 1 phosphorus, 4 oxygen
12 sodium, 4 phosphorus, 16 oxygen
Answers
Answer:
12 sodium, 4 phosphorus, 16 oxygen
Explanation:
4Na3PO4
Has (4X3) Na ,( 4X1) P ,(4X4) O
Answer:
12 sodium, 4 phosphorus, 16 oxygen
DDDDDDDDDDDDD
Explanation:
KNO, + H.CO, – K. CO, + HNO
Answers
Answer:
Just Try ur best ok
Explanation:
a cylinder equipped with a movable pistol has an applied pressure of 4.0 atm and a volume of 6.0l
Answers
It is given that cylinder equipped with movable piston that is experiencing pressure of 4.0 atm and has volume 6.0 liters. We consider the ideal gas law, which states that pressure, volume and temperature of gas are related by PV = nRT, where P is pressure, V is volume, n is number of moles of gas, R is gas constant, and T is temperature in Kelvin.
For example, if we were to decrease the volume of the cylinder while keeping the temperature and number of moles constant, we would expect the pressure to increase. This is because the same amount of gas molecules would be forced into a smaller space, which would lead to more collisions with the walls of the cylinder and thus a higher pressure. Conversely, if we were to increase the volume of the cylinder, we would expect the pressure to decrease.
Similarly, if we were to increase the temperature of the gas while keeping the volume and number of moles constant, we would expect the pressure to increase. This is because increasing the temperature would cause the gas molecules to move faster, which would lead to more collisions with the walls of the cylinder and thus a higher pressure. Conversely, if we were to decrease the temperature, we would expect the pressure to decrease.
Overall, there are many factors that can affect the behavior of a cylinder equipped with a movable piston, and we cannot fully predict its behavior without more information about the gas inside and the conditions under which it is being operated. However, by considering the ideal gas law and some basic principles of gas behavior, we can make some educated predictions about how the system might respond to changes in pressure, volume, or temperature.
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how much is the mass of a man if
he has to do 2500 joules of work in
climbing a tree 5 meters tall
Answers
Answer:
50kg
Explanation:
Using the formula for potential energy, which is the amount of energy due to position;
P.E = m × g × h
Where;
m = mass (kg)
g = acceleration due to gravity (10m/s²)
h = height (metres)
According to the information provided in this question, m = ?, P.E = 2500J, h = 5m
Using P.E = m × g × h
m = P.E/gh
m = 2500/(5 × 10)
m = 2500/50
m = 50kg
The mass of the man is 50kg.
how could a carbon atom in coal end up in a penguin
Answers
Answer:
Explanation:
Combustion of coal releases carbon as CO2. Phytoplankton remove carbon dioxide from the atmosphere by photosynthesis. Carbon is passed along the food chain as fish eat the plants. Penguins feed on the fish, taking in the carbon compounds containing the original carbon atom.
The carbon atoms in coal end up in a penguin due to the process of food chain.
What is a penguin?
Penguins are aquatic flightless birds that are found in the Southern Hemisphere.
The food chain leads to the carbon atom into the penguin.
The carbon atoms are release from the coal combustion.
The released atoms go into plants leaves.
The herbivorous eat plants.
Then the carnivorous eats the herbivorous.
The carnivorous can be a fish and fish are eaten by penguins.
Thus, in this way, the carbon atoms in coal end up in a penguin due to the process of food chain.
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Lana drew the diagram below to model asexual reproduction. Based on Lana's diagram, which statement explains the results of asexual reproduction? A. The offspring are not genetically identical to the parent, because each offspring receives only half of the chromosomes from a single parent. B. The offspring are not genetically identical to the parents, because two parents each contribute half of their chromosomes to each offspring. C. The offspring are genetically identical to the parent, because each offspring receives a complete copy of a single parent's chromosomes. D. The offspring are genetically identical to the parents, because two parents each contribute a complete copy of their chromosomes to each offspring.
Answers
Based on Lana's diagram, the correct statement that explains the results of asexual reproduction is C. The offspring are genetically identical to the parent, because each offspring receives a complete copy of a single parent's chromosomes.
What happens in asexual reproduction?In the diagram, the parent cell divides into two identical daughter cells, each of which contains a complete copy of the parent cell's genetic material.
This type of reproduction, where a single parent produces offspring that are genetically identical to itself, is called asexual reproduction. It is the process by which many unicellular organisms, such as bacteria and some protists, reproduce.
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Read this passage about Christopher Reeve.
Christopher Reeve was born on September 25, 1952, in New York City. His mother was a journalist, and his father was a professor. As a kid he played sports, did well in school, and liked acting. His passion for acting goes back to playing with his brother when they were little. Reeve acted in his first play at the age of nine. After attending college, taking acting classes, and acting in many plays and movies, Reeve landed his biggest role. In 1978, he played the title role in Superman. He received very positive reviews for his performance and starred as Superman in all the sequels. Reeve was soon acting as the lead role in dozens of movies after Superman. Once well-known, Reeve used his celebrity status for good causes, such as visiting very sick children through the Make-A-Wish foundation. He was also a track and field coach at the Special Olympics.
Besides acting, Reeve was also a licensed pilot and liked horseback riding. He learned to ride horses for a movie role, and he continued riding in his free time. Unfortunately, while riding one day in 1995, Reeve fell from his horse and became paralyzed from the neck down. Being confined to a wheelchair did not hold back Reeve from being socially active, and after many surgeries and rehabilitation, he decided to dedicate his life to helping people with spinal-cord injuries. He created the Christopher Reeve Foundation, which supports the improvement of the lives of people with disabilities and helps fund research to find a cure for paralysis. He was also politically active, working with senators to make sure that people with disabilities were treated fairly in the workplace. Reeve received many awards for his dedication to public service. He also wrote two books about his experiences, and a documentary was made about his life. Reeve passed away in 2004, but his legacy lives on today. He touched the lives of many people and showed us what it means to overcome extreme odds by never giving up.
Based on this passage, Reeve best fits in the yearbook category
“Most Likely to Take Risks.”
“Most Likely to Help Others.”
“Most Likely to Run for President.”
“Most Likely to Be a Musician.”
PLEASE HURRY ONLY 10 MINUTES LEFT
Answers
Answer:
"most likely to help others"
Explanation:
thank u hope it helps u
PLS PLS PLS HELP PLS I REALLY NEED IT AND I WILL MARK YOU BRAINLYEST:((
PLSSSS
Answers
Answer:
D and A
Explanation:
D is a Mitochondria (the powerhouse of the cell)
A is a Choroplast (the part that takes in the sun)
Calculate the amount (in moles) of gas which occupies 250cm³ at STP
Answers
Answer:
0.01
Explanation:
volume of 22.4 L (22,400 ml) at s.t.p. 250 ml out of 22,400 ml is 0.01 rounded, therefore I assume that is the answer. About 0.01 mole occupies 250 cm3 at s.t.p.
Explain FULLY what this symbol means/can tell you ( be sure to talk about numbers of protons, neutrons, and electrons.
Answers
Chlorine has 17 protons, 17 electrons and 18 neutrons. The atomic number is 17 and the mass number is 35.
Explanations:The given element is Chlorine with an atomic number of 17 and a mass number of 35. The subscript serves as the atomic number while the superscript is the mass number.
The proton number is equal to the atomic number and electron number of a chlorine atom. Therefore;
Proton number = electron number = 17
For the neutron number
Neutron number is the difference between the mass number and the proton number;
Neutron number = Mass number - Proton number
Neutron number = 35 - 17 =18
Hence there are 18 neutron numbers in a chlorine atom
Ocean water is a combination of salt and water. Which of the following best describes the composition of ocean water? It is an element, since water is found in all living things It is a suspension, since particles can be found in ocean water It is a compound, since it results from the combination of elements It is a solution, since it is made up of one substance dissolved in another
Answers
Answer:
The ocean is made up of salt water, which is a combination of fresh water, plus minerals collectively called "salts." These salts aren't just sodium and chloride (the elements that make up our table salt), but other minerals such as calcium, magnesium, and potassium, among others.
Explanation:The answer is since particles can be found in ocean water It is a compound, since it results from the combination of elements It is a solution
Heat transferred laterally in the atmosphere by horizontal wind movements is a process called?
Answers
Answer:
Advection
Explanation:
Advection refers to the process over which heat transferred laterally in the atmosphere by horizontal wind movement.
Which statement about noble gases is correct? *
They are extremely rare in nature.
They are highly reactive with both metals and nonmetals.
O They exist as single atoms rather than as molecules.
O They form compounds with very bright colors.
Answers
Answer:
Hello There!!
Explanation:
I believe the answer is O They form compounds with very bright colors.
hope this helps,have a great day!!
~Pinky~
The statement about noble gases that is correct is D. They form compounds with very bright colors.
Noble gases simply refers to the elements that have similar properties. Noble gases are colorless, odorless, and have very low reactivity.
Examples of noble gases are helium, argon, Krypton, xenon, etc. Noble gases also form compounds with very bright colors.
In conclusion, the correct option is D.
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Compare 1 mole of NaCl and 1 mole of CO2
Answers
Answer:
3
Explanation:
Culinary arts is about understanding how flavors and ingredients blend together to
create edible masterpieces, which makes it a study of
(1 point)
O chemistry and algebra.
O art and science.
O psychology and history.
O biology and literature.
Answers
in the redox conversion of so3 to so−, s is ? and its oxidation number goes from ? to ?
Answers
The silver atom in this scenario acts as an oxidising agent, whereas the copper atom acts as a reducing agent.
The number of electrons that an element's atoms in a compound loss or gain is known as the oxidation number. The symbol (+) and (-) are typically used before the magnitude when writing oxidation numbers. The oxidation number will be zero if the atoms are present in their elemental form. The oxygen (O) oxidation number in compounds is typically -2. the following compound: Let S be in the oxidation state "x." As a result, sulfur's (S) oxidation number is (+6). Any interaction between an oxidising and a reducing agent is referred to as a redox reaction. In the reaction, one species is oxidised while the other species is reduced. The reduced specie suffers a drop in oxidation number while the oxidation number of the oxidised specie grows.
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if analysis of skeleton remains shows that lead-210 has undergoes 2.5 half lives, how many old is the skeleton? lead half life is 22.3 years
Answers
Based on the given information, we can calculate the age of the skeleton. The half-life of lead-210 is 22.3 years, and the skeleton has undergone 2.5 half-lives. To find the age, we need to multiply the half-life by the number of half-lives, which gives us:
22.3 years/half-life x 2.5 half-lives = 55.75 years
Therefore, the skeleton is approximately 55.75 years old. This type of analysis is commonly used in forensic science and archaeology to determine the age of skeletal remains. By measuring the amount of radioactive isotopes present in the bones, scientists can estimate how long it has been since the individual died. This can provide valuable information about historical events and the health and lifestyle of ancient populations.
To determine the age of the skeleton based on the half-life of lead-210, you can follow these steps:
1. Identify the number of half-lives that have occurred: In this case, it is 2.5 half-lives.
2. Find the half-life of lead-210: Given as 22.3 years.
3. Calculate the age of the skeleton by multiplying the number of half-lives by the half-life of lead-210.
Age of skeleton = (Number of half-lives) x (Half-life of lead-210)
Age of skeleton = (2.5) x (22.3 years)
Age of skeleton = 55.75 years
The skeleton is approximately 55.75 years old based on the analysis of lead-210 decay.
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What is the maximum possible number of electrons in an atom with n l=7.
Answers
Answer:
32 is the answer.
Explanation:
water is stored where until it is used by the cell
Answers
Answer: The water Inside the cell is stored inside the vacuole(s)
Explanation:
Hope this helps :)
Imagine the periodic table includes the element Imaginium (Im) that has atomic number 125 and several radioactive isotopes, including one with atomic mass number 282 that decays by alpha decay. After a decay event, what will be the values of A and Z for what was formerly an atom of 282Im?
Answers
The atomic number (Z) of Iminium (Im) is 125, and since alpha decay results in the loss of 2 protons, Z will decrease by 2, giving a value of 123 for the newly formed element.
After a decay event by alpha decay, the Iminium (Im) atom with atomic number 125 (Z) and atomic mass number 282 (A) will change. Alpha decay involves the loss of 2 protons and 2 neutrons from the nucleus. Therefore, the new values for A and Z will be:
- New atomic number (Z) = 125 - 2 = 123
- New atomic mass number (A) = 282 - 4 = 278
So, the atom that was formerly 282Im will now have an atomic number (Z) of 123 and an atomic mass number (A) of 278.
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I NEED HELP PLEASE, THANKS! :)
A manufacturing company is trying to produce a lightweight but strong cart for use by home gardeners. Which metal—titanium (Ti), iron (Fe), or zinc (Zn)—would be the best for this application and why?
Answers
Answer:
Titanium; lowest density
Explanation:
The cart would use the same volume of metal, no matter which one it was made of.
If weight were the only consideration, the company would choose the metal with the lowest density.
The values I find for the metals are
Ti 4.5 g/cm³
Fe 7.9 g/cm³
Zn 7.1 g/cm³
Titanium would be the best metal for this application.
Answer:
Titanium would be the best metal for this application because it is a low density metal that is still strong and ductile
Explanation:
why do objects cool down
Answers
Answer:
wla dyan ang sagut ehh baka mali yan
Explain how a mutation becomes an adaptation.
Answers
Answer:
An adaptation occurs if a mutation helps an individual survive and reproduce.
Explanation:
Over generations, the mutation will become more common. An adaptation occurs if a mutation isn't passed on to offspring. Hope this helps! xx
79. Which best describes what is made of matter? (1 point)
all living things and objects
all atoms
all solid objects and atoms
all living things
Answers
Answer:
all living things
Explanation:
Write down the molecular formula of sodium silicate?
Answers
Answer:
Na₂SiO₃
Explanation:
is sugar made of tiny particles
Answers
In the electronegativity periodic table down a place from left to right is it going to be the same as negative to positive
And also for the right side from down to up is it going to be negative at down and postive at the top?
Answers
Answer:
yes, you are correct
Explanation:
it increases upwards