how many distinct peaks would you expect to see in the 1h nmr of the following compound?
Answers
3 distinct peaks will be expect to see in the 1h NMR of the following compound.
If a molecule has three distinct peaks in its 1H NMR spectrum, it indicates that the molecule has three unique sets of chemically equivalent protons. Chemically equivalent protons are protons that have the same chemical environment and, therefore, experience the same magnetic field.
The position of each peak in the 1H NMR spectrum is determined by the chemical shift of the protons in the molecule. The chemical shift is influenced by the electron density surrounding the proton, and this can be affected by factors such as neighboring atoms, functional groups, and the local magnetic environment.
The intensity of each peak in the 1H NMR spectrum is determined by the number of protons in that set of chemically equivalent protons. Therefore, if a set of chemically equivalent protons has more protons than another set, it will produce a more intense peak in the 1H NMR spectrum.
Overall, the number and position of peaks in the 1H NMR spectrum can provide valuable information about the structure and composition of a molecule.
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Related Questions
C8H16 +12028CO2 +8H₂O
The most efficient ratio for the reaction is
1 C8H16 12 02.
Which set of reactants will be the most
efficient (least wasteful of materials) for
the reaction?
A. 10.0 mol CgH16 and 25.0 mol O₂
B. 0.5 mol C₂H₁6 and 5.0 mol O₂
C. 2.0 mol C₂H₁6 and 30.0 mol O₂
D. 2.0 mol CgH16 and 24.0 mol O₂
Answers
The set of reactants that will be the most efficient (use the least amount of resources) for the reaction is set D, which contains 2.0 mol C8H16 and 24.0 mol O2.
This is because the reaction's most effective ratio is 1 C8H16: 12 O2. This is the case because there is no excess of any reactant and the ratio of the reactants is equal to the ratio of the reactants in the reaction equation. This indicates that the reaction is the most efficient since it requires the least quantity of material to complete.
Reactants in chemical reactions must be mixed in a certain ratio for the reaction to proceed effectively and without using up extra reactants. The highest effective combustion ratio for C8H16 is 1:12, which calls for 12 moles of oxygen to burn one mole of C8H16.
As a result, set D, consisting of 2.0 mol C8H16 and 24.0 mol O2, is the most effective reaction for the provided reactants since it maintains the 1:12 ratio without using any extra reactants. This implies that no resources will be wasted because the reaction will use up every one of the reactants.
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Answer:
Explanation:
it's D i have it in my notes so the top of me is right :)
The ability of sodium chloride to dissolve in water is an example of a? chemical property chemical change physical change physical property physical change
Answers
Answer:
salt dissolving in water is usually considered to be a physical change, however the chemical species in salt solution (hydrated sodium and chlorine ions) are different from the species in solid salt.
Which statement about energy is correct?
A) A little energy is lost every time an energy transformation occurs.
B) Because of the conservation of energy, it is possible to have a machine that would never need energy.
C) Conservation of energy occurs only when some of the energy is converted to light.
D) Energy can change form, but energy can never change in total amount.
Answers
Answer:
B) is true
Explanation:
because in the 24th century that we are now people have created machine that can work without energy
The transfer of energy between systems through work is the expansion of gas in a steam engine. By doing work or by transferring heat, energy can be transferred. Therefore, option B is correct option.
What is energy transfer?
Energy transfer is a phenomenon in which energy transfer from one matter to another matter. energy requirement is necessary to move nay object so work has to be done by the gas to the piston.
Heat can be transferred by three ways radiation, convention or conduction. In conduction, direct contact of two body is necessary for transfer of molecules. Due to the conservation of energy, it is possible to synthesize a machine that would never need energy.
Therefore, the option B is correct option that is because of the conservation of energy, it is possible to have a machine that would never need energy.
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a) Describe the typical properties which you would expect to be shown by mostmetals, e.g. metals like the transition metals, in terms of electrical conductivity,hardness, density, melting-point and conductivity of heat.
Answers
In addition to being malleable (able to be hammered into sheets) and ductile, metals are excellent conductors of heat and electricity (drawn into wire). The majority of metals have a distinctive silvery luster and are solid at normal temperature.
What elements comprise metal?Atomic components like electrons, neutrons, and protons are the building blocks of metals. The quantity of protons in an atom allows for the differentiation of atoms belonging to various elements. In the earth's crust, metals make up around 25%.
Where is the metal most prevalent?The Earth's core is where the majority of the metal on the planet, particularly iron, can be found. Metal is mixed with rock, oxygen, and other elements in the Earth's crust, where it is dispersed unevenly.
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Based on your observations and test results, can you determine that as the color of the
element gets darker, the element is less metallic? Support your answer with your
results.
Answers
As the color of the element gets darker, the elements are less metallic because the elements that are metal are shiny whereas the elements that are non-metal are dull or dark in appearance.
What are metals and non-metals?Metals are substances with the qualities of being shiny, hard, fusible, malleable, ductile, etc. Gold, silver, aluminum, copper, iron, and other metals are a few examples of materials that are metals.
Metals are also known to be good conductors of heat and electricity.
Non-metals are poor conductors of heat and electricity and are usually dull in appearnce.
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using a dot and cross diagram as electrons show the bonding in a molecule of oxygen(O2-2 atoms of oxygen, one as dots, one as crosses)
Answers
Answer:
attached is the answer, hope it helps!!
What is one way to reduce the use of nonrenewable energy resources?
Answers
Answer:
By increasing the use of renewable energy sources!
Explanation:
To satisfy the need for power in (whatever country you live in) you need to have a certain quota of power. This is typically achieved by the use of oil and natural gasses. You can also achieve it though by using thermal energy as well as solar energy (Solar Panels), and wind, kinetic, and water. (Windmills and Watermills). These are quite difficult to make and cost a lot of money to produce and kept running smoothly. So to cut back on cost we just use oil/natural gasses. But to answer your question, we need more renewable energy to make nonrenewable energy less used!
All the body cells in a human have the same hereditary information. However, they do not all look and function in the same way. This difference is caused by:
Answers
Answer:
All the body cells in a human have the same hereditary information, meaning they have the same DNA because they came from one source (both parents). However, they have differences in the way they function and this is as a result of each cell in the body have a pool of DNA and then they can select the genes they would like their features to be expressed depending on some factors such as signals they receive in and out of the cells, environmental factors, leading to different functions of the cells and the way they look.
.
Which shows the correct order of steps during the formation of an ionic bond?
Answers
The correct Option is C. Electrons are transferred → Ions form → Ions are attracted to each other.
The right request of steps during the development of an ionic bond is:
C: Electrons are transferred → Ions form → Ions are attracted to each other
In ionic holding, at least one electrons are moved from a metal particle to a non-metal molecule, framing positive and negative particles, separately. The contrary charges of the particles draw in one another, subsequent in the arrangement of an ionic compound. Accordingly, the right request of steps in the development of an ionic bond is first, electrons are moved starting with one molecule then onto the next, then particles are framed, lastly, the oppositely charged particles are drawn to one another to shape an ionic compound.
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The complete question is:
Which shows the correct order of steps during the formation of an ionic bond?
A: Ions are attracted to each other → Electrons are transferred → An ionic compound forms
B: An ionic compound forms → Ions are attracted to each other → Electrons are transferred
C: Electrons are transferred → Ions form → Ions are attracted to each other
D: Ions form → Electrons are transferred → Ions are attracted to each other
Answer: C
Explanation: JUST TOOK THE QUIZ HOPE THIS HELPED
Sharon reads two different articles about avocados. The first article, in a weight-loss magazine, claims that avocados
are unhealthy because they are high in fat. The second article, in an annual publication from a doctors' group,
that the fat in avocados is a type that IS good for the heart.
claims
To assess these claims, which question might Sharon ask?
O Which source do avocados come from?
O Where
are avocados soid?
O Is the source an authority on the subject?
• How much do avocados cost?
Answers
Is the source an authority on the subject? Option C.
Authorship is a concept that represents the authority an individual author has established on the web for a particular topic. Authors publishing on trusted sites build permissions and apply them when publishing on other platforms. A good example of a traditional system of power is a monarchy.
Most governments throughout history have ruled under this form of authority. In this form of rule, the subject accepts the nature of authority. They refrain from challenging the traditional rights of powerful groups and individuals. can be defined as Permissions that are important in determining a website's credibility. To determine who is responsible for the website who wrote the information etc.
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The chromatographic separation happens in a specific way. Answer the following questions about the procedure: (3+3 6 pts) We gradually add petroleum ether to the column, always making sure to have the petroleum ether level adjust to right above the alumina level, before adding more. Why is this necessary?
Answers
The reason for gradually adding petroleum ether to the column during chromatographic separation is to ensure proper packing of the column and to avoid disturbing the stationary phase.
Alumina, which is the stationary phase in this case, is packed in the column at a specific level. If the petroleum ether level is not adjusted properly, it can cause the alumina to move or become disturbed, which can lead to a decrease in separation efficiency.
By gradually adding the solvent, we ensure that the stationary phase is evenly distributed and packed, allowing for efficient separation of the components in the mixture. Additionally, if too much solvent is added at once, it can create channels in the stationary phase, which can cause the components to bypass the stationary phase and result in poor separation.
Therefore, it is crucial to add the solvent gradually, allowing the stationary phase to properly settle and pack the column, resulting in an efficient and effective separation.
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when a soap film gets *very* thin, down to a molecular lengths scale, its reflection across the entire visible spectrum becomes zero. why?
Answers
A soap film is thin enough to exhibit interference of light, meaning that the light waves passing through it can reinforce or cancel each other out.
When the thickness of the soap film decreases to a molecular scale, the film acts as a thin-film interferometer and the reflection across the entire visible spectrum becomes zero.
Because the light waves passing through the front and back surfaces of the film interfere destructively, leading to zero reflection. This condition is known as the "minimum reflection" and is used to accurately measure the thickness of thin films.
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After hockey practice, Carissa and Keenan were playing a game where they were pushing some objects to get them to crash. They were using a cone and two different pucks—a black one with more mass for Crash 1 and a blue one with less mass for Crash 2. They want to know what happened to the cone. Use the information from the diagram to answer. In which crash did the cone experience a stronger force? How do you know?
Answers
The crash where the cone experience a stronger force is option D because: Crash 1: the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.
Does it take a stronger force to slow something down?The ball is drawn back to Earth by gravitational force. The ball returns to Earth as a result of friction. The ball is forced back toward Earth by magnetic force.
A puck's velocity changes when a player makes contact with it when it is still. He causes the puck to speed up, in other terms. The hockey stick's force, which causes the acceleration, is responsible. The velocity grows as long as this force is in motion.
Therefore, the force applied to an object must be larger than what is required for a progressive slowing down if the object must be slowed down quickly. For instance, a bicycle's brakes will slow or stop it more quickly the more force is given to it.
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See full question below
After hockey practice, Carissa and Keenan were playing a game where they were pushing some objects to get them to crash. They were using a cone and two different pucks—a black one with more mass for Crash 1 and a blue one with less mass for Crash 2. They want to know what happened to the cone.
Use the information from the diagram to answer.
In which crash did the cone experience a stronger force? How do you know?
answer choices
There was no force on the cone. In both crashes, only the hockey puck experienced a force.
The diagram doesn’t tell you anything about the force on the cone. It only gives information about the force on the pucks.
It was the same force in both crashes; the hockey puck changed speed by the same amount in each crash, so the force on the cone was the same each time.
Crash 1; the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.
Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 2.32 g of butane is mixed with 14. g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to significant digits.
Answers
Suppose 2.32 g of butane is mixed with 14 g of oxygen. The maximum mass of water vapour that could be produced by the chemical reaction is 3.6 g.
Given the equation is gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water that can be written as:
\(C_4H_{10\) + 6.5 \(O_2\) ------> 5 \(H_2O\) + 4 \(CO_2\)
Thus, one mole of butane requires 6.5 moles of oxygen
In the question, the molar mass of butane is 58 g thus the number of moles is 0.04. Similarly, the molar mass of oxygen is 32 g and thus the number of moles is 0.4375.
0.04 moles of butane requires 0.04 * 6.5 = 0.26 moles of oxygen thus the butane is the limiting reagent.
1 mole of butane produces 5 moles of water
0.04 moles of butane produces 5 * 0.04 = 0.20 moles of water
Weight of water produces = 0.2 * 18 = 3.6 g.
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How many moles of sodium are needed to produce 2.4 mol of sodium oxide?
Answers
Answer:
Explanation:
4
N
a
+
O
2
→
2
N
a
2
O
.
By the stoichiometry of this reaction if 5 mol natrium react, then 2.5 mol
N
a
2
O
should result.
Explanation:
The molecular mass of natrium oxide is
61.98
g
⋅
m
o
l
−
1
. If
5
m
o
l
natrium react, then
5
2
m
o
l
×
61.98
g
⋅
m
o
l
−
1
=
154.95
g
natrium oxide should result.
So what have I done here? First, I had a balanced chemical equation (this is the important step; is it balanced?). Then I used the stoichiometry to get the molar quantity of product, and converted this molar quantity to mass. If this is not clear, I am willing to have another go.
What bonding pattern do you observe that you could use to predict whether a compound will be gas at standard temperature and pressure?
Answers
Answer:What bonding pattern do you observe that you could use to predict whether a compound will be gas at standard temperature and pressure?
If your job is to test the amount of lead found in paint samples, what area of chemistry would have you studied
Answers
If your job is to test the amount of lead found in paint samples, then you should be specialized in Analytical Chemistry.
Analytical Chemistry is a branch of Chemistry and is a stream of Science that deals with the identification and quantification of various chemical substances in a mixture.
Sometimes the work of the chemists in the field may be related to inventing a new method for testing and identification of a certain chemical or element from a mixture. Their role is usually to perform analysis and interpret a lot by performing the analysis.
It also involves quantitative analysis for determining the numerical amount and concentration of various chemical substances.
So, if you wish to test the amount of lead found in paint samples, you need to focus on Analytical chemistry.
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expired air has a greater oxygen content than alveolar air because
Answers
The answer is "a mix of alveolar air and dead space air."
Expired air has a greater oxygen content than alveolar air because it is a mix of alveolar air and dead space air.
Expired air is the air that is breathed out after breathing in oxygen.
Alveolar air, on the other hand, is the air that is in the lungs, specifically in the alveoli.
Dead space air is the air that is not involved in gas exchange, or the air that is in the trachea, bronchi, and bronchioles that does not reach the alveoli.
The answer is "a mix of alveolar air and dead space air."
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a gas made up of atoms escapes through a pinhole 0.735 times as fast as cl2 gas. write the chemical formula of the gas
Answers
The molar mass of the unknown gas is approximately 130.2 g/mol. Considering that it's made up of atoms and given its molar mass, the most likely chemical formula of the gas is Xe (xenon). Xenon has a molar mass of approximately 131.29 g/mol, which is close to the calculated value.
Based on the given information, we can determine the chemical formula of the gas using Graham's Law of Effusion. Graham's Law states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass. The formula is:
Rate1 / Rate2 = √(M2 / M1)
Here, Rate1 is the rate of effusion for the unknown gas, Rate2 is the rate of effusion for Cl2, M1 is the molar mass of the unknown gas, and M2 is the molar mass of Cl2.
Since the unknown gas escapes 0.735 times as fast as Cl2, we can set up the equation:
0.735 = √(M2 / M1)
Now, we need to find the molar mass of Cl2. Chlorine has a molar mass of approximately 35.45 g/mol. Cl2 has two chlorine atoms, so its molar mass is:
M2 = 2 * 35.45 = 70.9 g/mol
Next, we need to solve for M1:
0.735 = √(70.9 / M1)
Square both sides of the equation:
0.735^2 = 70.9 / M1
M1 = 70.9 / 0.735^2
M1 ≈ 130.2 g/mol
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!!!!!!
Describe the difference between naturally occurring radiation and man-made
radiation.
Answers
Answer:
Man-made radiation is generated in range of medical, commercial and industrial activities and natural occuring radiation occurs due to minerals.
in this experiment, you used 45.0 ml of 1.00 m hcl in each trial. calculate the mass of mg that would produce the maximum amount of heat with 45.0 ml of 1.00 m hcl. the molar mass of magnesium is 24.305 g/mol.
Answers
The mass of magnesium that would produce the maximum amount of heat is 0.547 grams.
The chemical reaction between magnesium and HCl is
Mg + 2 HCl → MgCl₂ + H₂
In stoichiometry, the Avogadro's law said that the coefficient for every subtances in the reaction is the ratio for the number of moles for every subtances.
For HCl
The volume = V = 45.0 mL = 0.045 LThe molarity = M = 1.00 MThe number of molesn = MV
n = 1.00 × 0.045
n = 0.045 mol
For Mg
The molar mass = Mr = 24.305 grams/molThe number of molesn Mg : n HCl = 1 : 2
n Mg = n HCl ÷ 2
n Mg = 0.045 ÷ 2
n Mg = 0.0225 molThe mass of Mg
m = n × Mr
m = 0.0225 × 24.305
m = 0.547 grams
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the phase of energy metabolism that often begins with the sight, the smell, or even the thought of food is the _____ phase.
Answers
The phase of energy metabolism that often begins with the sight, the smell, or even the thought of food is the cephalic phase.
The cephalic phase is the initial stage of digestion and energy metabolism that occurs before food even enters the body. It involves the sensory stimulation of the brain through visual, olfactory, and cognitive cues associated with food.
When we see, smell, or think about food, our brain sends signals to the digestive system, triggering the release of enzymes and hormones that prepare the body for food intake. This phase includes processes such as increased salivation, gastric acid secretion, and pancreatic enzyme release.
The cephalic phase plays a crucial role in preparing the body for efficient nutrient digestion and absorption, ultimately contributing to overall energy metabolism.
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One role of rib bones in the _________ system is to protect the heart from physical injury.
Answers
skeletal system
Explanation:
ribs are long curved bones forming the rib cage, which is part of the axial skeleton.
a a certain reaction has an activation energy of 60.92 kj/mol. at what kelvin temperature will the reaction proceed 7.50 times faster than it did at 365 k?
Answers
Answer:
405.6
Explanation:
Use this formula:
ln(K2/K1) = (Ea/R) ((1/T1) - (1/T2))
----------------------------------------------------------------------------------------------------------
K2 = 7.5
Use 1 for K1
Ea = 60.92 kJ/mol -> 60920 J/mol
R = 8.314 J/mol
T1 = 365
----------------------------------------------------------------------------------------------------------
ln(7.5/K1) = (60920/8.314) ((1/365) - (1/T2))
2.015 = 7327.4 ((1/365) - (1/T2))
2.015 = ((7327.4/365) - (7327.4/T2))
2.015 = 20.08 - (7327.4/T2)
-18.065 = - (7327.4/T2)
Cancel out the negatives -> 18.065 = (7327.4/T2)
Multiply both sides by T2 and then divide both sides by 18.065 giving you T2 = 7327.4/18.065 = 405.6
what are the properties of elements classified as metalloids on the periodic table?
Answers
Metalloids possess intermediate properties between metals and nonmetals. They exhibit characteristics such as intermediate conductivity, brittleness, semiconducting behavior, and varying chemical reactivity.
Metalloids, also known as semimetals, are a group of elements located on the periodic table between metals and nonmetals. The properties of metalloids exhibit a combination of characteristics from both neighboring groups. Here are some key properties of metalloids:
1. Electrical conductivity: Metalloids have intermediate electrical conductivity, which means they can conduct electricity to some extent. However, their conductivity is lower than that of metals but higher than that of nonmetals.
2. Thermal conductivity: Similar to electrical conductivity, metalloids possess intermediate thermal conductivity. They can conduct heat, but not as efficiently as metals.
3. Brittleness: Metalloids are generally brittle solids. They are rigid and tend to break or shatter when subjected to stress.
4. Semiconducting behavior: One of the defining properties of metalloids is their ability to behave as semiconductors. They can exhibit both metallic and nonmetallic characteristics depending on the conditions, making them important in the field of electronics.
5. Varying chemical reactivity: Metalloids show diverse chemical reactivity. Some metalloids, like boron and silicon, are relatively reactive, while others, like arsenic and tellurium, are less reactive.
In conclusion, metalloids possess intermediate properties between metals and nonmetals. They exhibit characteristics such as intermediate conductivity, brittleness, semiconducting behavior, and varying chemical reactivity.
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The balanced chemical equation for the reaction between sodium chloride and silver nitrate is: NaCl(aq) AgNO3(aq) AgCl(s) NaNO3(aq) We can interpret this to mean: ... 1 mole of sodium chloride and moles of silver nitrate React to produce ... moles of silver chloride and moles of sodium nitrate
Answers
Answer:
1 mole of NaCl reacts with 1 mole of AgNO₃ to produce 1 mole of AgCl and 1 mole of NaNO₃
Explanation:
The given reaction is a double decomposition (metathesis) reaction. A reaction in which the products are formed by the exchange of the ions present in the two reactants. NaCL and AgNO₃ exchange ions to form AgCl, which precipitates and NaNO₃.
The balanced equation for reaction is given below;
NaCl(aq) + AgNO₃(aq) ----> AgCl(s) + NaNO₃(aq)
In the reaction above, the mole ratio of the reactants to products is 1 : 1 ---> 1 : 1
This means that 1 mole of NaCl reacts with 1 mole of AgNO₃ to produce 1 mole of AgCl and 1 mole of NaNO₃.
Given the molar mass of the compounds above;
NaCl = 58.5 g/mol; AgNO₃ = 170 g/mol; AgCl = 143.5 g/mol; NaNO₃ = 85 g/mol
Therefore, 58.5 g of NaCl reacts with 170 g of AgNO₃ to produce 143.5 g of AgCl and 85 g of NaNO₃
antimony hexachloride formula
Answers
What does the reaction rate measure?
Answers
Answer:
It's C
Explanation:
cuz im goated
Identify the following examples as either physical or chemical change.
(Ill give brainliest if right)
Answers
Answer:
7. Chemical
8. Chemical
9. Physical
10. Physical
11. Physical
12. Physical
Explanation:
the molecular formula of most monosaccharides represents a multiple of
A. CHO
B. CH2O
C. CHO2
D. CH3O
Answers
The molecular formula of most monosaccharides represents a multiple of B. CH₂O.
The most fundamental type of carbohydrates are monosaccharides. The majority of organisms convert monosaccharides like glucose into energy, which they then store or use as needed. The number of carbon atoms in this form of glucose and the functional group that is connected to it are used to classify it.
Monosaccharides are simple sugars, and their general molecular formula is (CH₂O)n, where "n" represents the number of carbon atoms in the molecule. This formula indicates that monosaccharides consist of carbon, hydrogen, and oxygen atoms, with the ratio of hydrogen to oxygen being the same as in water (H₂O). Each carbon atom is typically connected to a hydroxyl group (-OH) except for one carbon, which is double-bonded to an oxygen atom, forming the carbonyl group (C=O).
So, the correct choice is B. CH₂O.
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The molecular formula of most monosaccharides represents a multiple of CH2O.
Explanation:The correct answer is B. CH2O.
The molecular formula of most monosaccharides represents a multiple of CH2O, which means that they have the same ratio of carbon, hydrogen, and oxygen atoms. This formula reflects the basic structure of monosaccharides, which consist of carbon (C), hydrogen (H), and oxygen (O) atoms in a 1:2:1 ratio, respectively.
For example, glucose, which is a monosaccharide, has a molecular formula of C6H12O6. If we divide each subscript by the greatest common divisor (in this case, 6), we get the simplest ratio of C1H2O1, which is equivalent to CH2O.
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