QUESTION 24
An egg white has about 3.4 grams of protein, but no fat or carbohydrates. How many Calories is this?
Answers
The egg white has 13.6 calories
Related Questions
How does weathering help to create soil? Please Help Asap
Weathering adds organic material to the soil.
Weathering builds up the rocks that create the deepest soil layer.
Weathering compacts small particles into larger rock pieces.
Weathering breaks parent material into smaller pieces.
Answers
Answer:
D. Weathering breaks parent material into smaller pieces.
Explanation:
I believe it is D. because weathering breaks down and loosens it into smaller pieces.
I hope it helps! Have a great day!
Muffin ^^
Answer:
Your answer would be:
D.) Weathering breaks parent material into smaller pieces.
Explanation:
Weathering breaks down and loosens the surface minerals of rock. The broken rocks are transported to another place where it decomposes and forms soil. Therefore weathering is important for soil formation. Without it, there will be likely less soil.
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The mass of the sun is about 1.98 x 10^30 kilograms. The mass of the earth is 5.97x 10^24 kilograms. The mass of the sun is how many times greater than the mass of
the earth?
Answers
Answer:
Explanation:
The mass of the sun is about 1.98 x 10^30 kilograms. The mass of the earth is 5.97x 10^24 kilograms.
1.98 x 10^30 / 5.97x 10^24 = 331658 times greater
Answer:
Explanation:
The mass of the sun / the mass of the earth
= 1.98 x 10^30 / 5.97x 10^24
= 3.32 x 10^5 times greater
which one of these elements would give a p-type semiconductor when added to a silicon crystal?
A) As B) Sb C) P D) C E) Ga
Answers
B) Sb (antimony) would give a p-type semiconductor when added to a silicon crystal. When a small amount of antimony is added to a silicon crystal, it creates a p-type semiconductor.
In this case, antimony atoms act as acceptors, which create holes in the valence band of silicon. The holes can then act as charge carriers in the crystal.
When adding impurities to a silicon crystal, the type of semiconductor produced depends on the valence electrons of the impurity atoms. In a p-type semiconductor, impurities with only three valence electrons are added to a silicon crystal. This creates "holes" in the crystal structure, which are essentially empty spaces where an electron could be. When a voltage is applied to the crystal, these holes move and act as the current carrier.
Among the given elements, only Boron (B) has three valence electrons, which means that when it is added to a silicon crystal, it will create holes and result in a p-type semiconductor. Elements such as As, Sb, P, and Ga have five valence electrons, so they create "extra" electrons in the crystal structure, which behave as the current carrier and result in an n-type semiconductor. Carbon (C) has only four valence electrons, which cannot effectively create holes or extra electrons, so it is not used as an impurity to create p-type or n-type semiconductors.
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The density (mass/volume) of aluminum is 2.70 times. 103 kilograms per cubic meter (kg/m3). what is the mass of an aluminum cylinder that has a volume of 1.50 m3? 5.56 times. 10–4 kg 1.50 times. 10–3 kg 1.80 times. 103 kg 4.05 times. 103 kg
Answers
Mass of aluminum = (1.50 m^3)( 2.70 x 10^3 kg/m^3) = 4050 kg
The intention of density is the assembly per volume of the substance. This is an intrinsic property consequently the size (or any external feature) does not change this effects.
What is Aluminum?Aluminum is a silvery-white metal, the 13 elements in the regular table. One surprising fact regarding aluminum is that it's the most widespread metal on Earth, making up more than 8% of the Earth's core mass. It's also the third most standard chemical essence on our planet after oxygen and silicon.The formed aluminum is in everyday use in mining, manufacturing, and trade in the United States; the formed aluminum is used with reasonable uniformity in Great Britain and typically by chemists in the United States.Aluminum (Al), also spelled aluminum, chemical component, a weightless silvery-white metal of main Group 13 (IIIa, or boron group) of the periodic table. Aluminum is the most plentiful metallic component in Earth's crust and the numerous widely used nonferrous metal.To learn motrev about Aluminum, refer to:
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Answer: D
Explanation: 4.05 x 10^3 kg
Which example is a long-term environmental change? La Niña El Niño climate change small asteroid impact
Answers
The correct answer is C. Climate change
Explanation:
Long-term environmental changes occur as major events affect the environment and ecosystems indefinitely. These events differ from short-term environmental changes because the effect of short-term environmental changes is mainly temporary. Also, long-term changes are usually gradual.
Climate change is an example of long-term environmental changes because this implies indefinite and major changes in weather patterns and ecosystems. For example, it is believed climate change will decrease the amount of ice in Earth, change sea level, and lead to the extinction of dozens of species. This does not occur with events such as el niño or a small asteroid impact that affect the environment for a short time and do not imply major changes.
Answer:
it is c) climate change
Explanation:
i just took the quiz
hope this helps!!! :D
Which best describes the motion of the object between 1 and 4 seconds? The object has decreasing acceleration and increasing velocity. The object has positive acceleration and eventually stops. The object has decreasing acceleration and decreasing velocity. The object has negative acceleration and eventually stops.
Answers
Answer:
D or 4
Explanation:
right on edge 2021
Answer:
d
Explanation:
The specific heat of Chloroform is 0.23 cal/ (g°C). If 24g of a substance are heated from 15°C to 75°C, how much heat was added to the system?
Answers
Taking into account the definition of calorimetry and sensible heat, the heat added to the system is 331.2 cal.
Calorimetry
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).
So, the equation that allows to calculate heat exchanges is:
Q = c× m× ΔT
where:
Q is the heat exchanged by a body of mass m.c is the specific heat substance c.ΔT is the temperature variation.In this way, between heat and temperature there is a direct proportional relationship.
Heat added to the system in this caseIn this case, you know:
Q= ?c= 0.23 \(\frac{cal}{gC}\)m= 24 gΔT= Tfinal - Tinitial= 75 C - 15 C= 60 CReplacing in the expression to calculate heat exchanges:
Q= 0.23 \(\frac{cal}{gC}\)× 24 g× 60 C
Solving:
Q= 331.2 cal
In summary, the heat added to the system is 331.2 cal.
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what volume of a 6.0 m solution of hcl should i dilute to create 2.0 liters of a 0.75 m hcl solution?
Answers
About 0.25 liters of 6.0 m solutions of HCl should be added to create 2.0 liters of a 0.75 m HCl solution.
Lowering a solute's concentration in a solution is the process of dilution. It entails adding significantly additional water or solvent to the solution. When more solvent is added to a solution without extra solute, the solution gets diluted.
The dilution formula is M₁V₁=M₂V₂. Here, M₁ is the initial molarity, M₂ is the final molarity, V₁ is the initial volume, and V₂ is the final volume.
Given, M₁ is 6.0 M, M₂ is 0.75 M, and V₂ is 2.0 L. We have to find V₁.
\(\begin{aligned}V_1&=\frac{M_2V_2}{M_1}\\&=\frac{0.75\times2}{6}\\&=\mathrm{0.25\; L}\end{aligned}\)
The answer is 0.25 L.
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Molarity of Kool Aid solutions can be calculated by comparing the concentrations of Kool Aid powder and sugar added to a given volume of water. The molar mass of Kool Aid will be the same as that of sugar for our purpose. The molecular formula for sugar is C12H22O11- Your objective for this lab will be to calculate the molarity of Kool Aid desired based on package directions. You will then be provided two concentrated Kool Aid solutions. You will use dilution calculations to determine the amount of water and concentrated solution you will need in order to prepare 65 mL of the desired molarity.
Calculate the molarity of Kool Aid desired based on the following information from the package directions.
1 package Kool Aid powder = 4. 25 grams 1 cup sugar = 192. 00 grams
2. 00 quarts of water (1. 06 quarts = 1 liter)
Answers
The amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.
To calculate the molarity of Kool Aid desired, we need to determine the number of moles of Kool Aid powder and sugar in the package. Since the molecular formula for sugar is C12H22O11, we can calculate its molar mass as follows:
Molar mass of C12H22O11 = (12 * 12.01) + (22 * 1.01) + (11 * 16.00)
= 144.12 + 22.22 + 176.00
= 342.34 g/mol
Given that the package contains 4.25 grams of Kool Aid powder, we can calculate the number of moles of Kool Aid powder using its molar mass:
Number of moles of Kool Aid powder = Mass / Molar mass
= 4.25 g / 342.34 g/mol
≈ 0.0124 mol
Similarly, for the sugar, which has a molar mass of 342.34 g/mol, we can calculate the number of moles of sugar using its mass:
Number of moles of sugar = Mass / Molar mass
= 192.00 g / 342.34 g/mol
≈ 0.5612 mol
Now, to calculate the molarity of the desired Kool Aid solution, we need to determine the volume of water. Given that 1.06 quarts is equal to 1 liter, and we have 2.00 quarts of water, we can convert it to liters as follows:
Volume of water = 2.00 quarts * (1.06 liters / 1 quart)
= 2.12 liters
To find the molarity, we use the formula:
Molarity (M) = Number of moles / Volume (in liters)
Molarity of Kool Aid desired = (0.0124 mol + 0.5612 mol) / 2.12 L
≈ 0.286 M
To prepare 65 mL of the desired molarity, we can use dilution calculations. We need to determine the volume of concentrated solution and the volume of water needed.
Let's assume the concentration of the concentrated Kool Aid solution is C M. Using the dilution formula:
(C1)(V1) = (C2)(V2)where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
Given that C1 = C M and V1 = V mL, and we want to prepare a final volume of 65 mL (V2 = 65 mL) with a final concentration of 0.286 M (C2 = 0.286 M), we can rearrange the formula to solve for the volume of the concentrated solution:
(C M)(V mL) = (0.286 M)(65 mL)
V mL = (0.286 M)(65 mL) / C M
So, the amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.
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19. Who was the first female astronomer
A.Aristotle
B.En Hedu’Anna
C.Archimedes
D.Plato
Answers
Answer: A.En Hedu'Anna
Answer:
En Hedu’Anna!
Explanation:
Why does lithium have a higher ionization energy compared to sodium?
Answers
Answer:
There are 11 protons in a sodium atom but only 3 in a lithium atom, so the nuclear charge is much greater. ... The only factor left is the extra distance between the outer electron and the nucleus in sodium's case. That lowers the ionization energy.
120g of C₂H, react with 288g of O₂, What is the limiting reactant? How many grams of water can be produced? How many grams of excess? If 130 grams of water are actually produced, what is the percent yield?
Answers
The percentage yield is equal to 200.6%.
The balanced equation for the given chemical reaction is :
2C2H + 5O2 → 4CO2 + 2H2O
Let's find the limiting reagent:
Mass of C2H = 120 g
Mass of O2 = 288 g
Molar mass of C2H = 26 g/mol
Molar mass of O2 = 32 g/mol
The number of moles of C2H is equal to:
120 g × 1 mol/26 g = 4.62 mol
The number of moles of O2 is equal to:
288 g × 1 mol/32 g = 9 mol
According to the stoichiometry of the balanced equation, 2 moles of C2H react with 5 moles of O2, so:
If 4.62 moles of C2H is used, then the required amount of O2 would be:
5/2 × 4.62 mol = 11.6 mol
We only have 9 mol of O2 which means it is the limiting reagent.
C2H is the excess reagent.
Let's find the mass of water produced:
According to the stoichiometry of the balanced equation,2 moles of H2O is produced per 2 moles of C2H2 moles of H2O is produced per 5 moles of O2If 9 mol of O2 is used, the number of moles of water produced would be:
2/5 × 9 mol = 3.6 mol
The mass of water produced is equal to:
3.6 mol × 18 g/mol = 64.8 g
Therefore, 64.8 g of water can be produced.
The amount of excess reagent is equal to:
4.62 mol - 2/2 × 9 mol = 4.62 - 9
= -4.38 mol
C2H is the excess reagent and it is not possible to have negative amount of a substance.
So, we assume that there is no excess reagent.
If 130 grams of water is produced, then the percentage yield is equal to:
Percent yield = actual yield/theoretical yield × 100
Theoretical yield is equal to 64.8 g
Actual yield is equal to 130 g
Percent yield = 130/64.8 × 100
= 200.6%
Therefore, the percentage yield is equal to 200.6%.
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the chemical reaction through which a molecule of sucrose is broken down into its monomers (glucose and fructose) is an example of:
Answers
The chemical reaction through which a molecule of sucrose is broken down into its monomers (glucose and fructose) is an example of:
\(Sucrose + H_{2} O -- > glucose + fructose\)
What is chemical reaction?
In this equation, sucrose and water are the reactants, and glucose and fructose are the products. During the reaction, some of the bonds in sucrose and water are broken and new bonds are formed, resulting in products with chemical properties that are very different from those of the reactants.When molecules in a reactant undergo a chemical reaction, their bonds are broken, and molecules in the product undergo a similar process, new bonds are created, creating a new substance.We are surrounded by chemical processes on a daily basis, whether it be in our bodies as they process food or in the sun as they produce the light we see. Prior to starting with chemical reactions, it's crucial to understand physical and chemical changes.The finest illustration of a physical and chemical transformation is a burning candle. You should light a candle. The candle turns into wax as time goes on, as is evident. The candle will go out if it is covered with a jar.However, A chemical change occurs while the candle burns in the demonstration.
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Determine the number of lone pair electrons on each H in NH3. Z of N= 7, H=1 A. 0 B. 3 C. 1 D. 2
Answers
Answer:
Option A. 0
Explanation:
To know the number of lone pair on each H in NH3, we shall determine how NH3 is formed. This is illustrated below:
3H + N —> NH3
Three atoms of Hydrogen, H reacted with 1 atom of nitrogen to produce ammonia, NH3. Each atoms contribute one electron each to form the covalent bond in NH3.
Hydrogen has only one electron and it will share it with the nitrogen atom to produce ammonia.
Further details can be seen in the attached photo.
Further more, in the attached photo, we can see that there is no lone pair of electron in the hydrogen atom as all it's electron has been used to form bond with the nitrogen atom. Only the nitrogen has a lone pair of electron.
Therefore, there are zero lone pair of electron on each hydrogen, H atom in ammonia, NH3.
A student weighs out 0. 0422 g of magnesium metal. The magnesium metal is reacted with excess hydrochloric acid to produce hydrogen gas. A sample of hydrogen gas is collected over water in a eudiometer at 32. 0°c. The volume of collected gas is 43. 9 ml and the atmospheric pressure is 832 mmhg. Using the experimentally collected data, calculate r and the percent error.
Answers
The R was found to be = 0.6711 L atm/mol.K
The percent error was found to be =18.22 %
How come magnesium is a metal?The three elements that form magnesium a metal are as follows: It effectively conducts electricity. An electropositive element is magnesium. Magnesium has a relatively low ionization enthalpy.
Where can one find magnesium metal?In the crust of the planet, magnesium is the seventh most prevalent element. It is found in huge amounts as magnesite, dolomite, and other minerals but does not naturally occur uncombined.
What applications does magnesium have?Magnesium supports muscle and neuron function as well as energy synthesis in the body, among many other vital functions. Typically, low magnesium levels don't result in any symptoms. On the other hand, persistently low levels can raise your risk of osteoporosis, type 2 diabetes, high blood pressure, and heart disease.learn more about Magnesium here
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Order the following elements by increasing ionization energy
Si
Mg
Ci
Ar
Answers
Answer: yes
Explanation: no
14. Which type of bond is formed when an ammonia
molecule accepts a proton?
1) electrovalent
2) ionic
3) coordinate covalent
4) metallic
Answers
Answer: dative covalent bond
Explanation: one hydrogen ion is transferred from HCl to the lone pair on NH3 . This particular hydrogen only has its nucleus transferred—its electrons remain with chlorine. So, the bond between this particular hydrogen atom and the central nitrogen is a dative covalent bond.
Can someone help me with this?
How many grams of AlCl3 are needed to completely react with 2.25 of NaOH?
Answers
Answer:
omg my friends name is Noah
Explanation:
Regardless of solubility, a cell signaling molecule could not affect a target cell without ________.
Answers
Regardless of solubility, a cell signaling molecule could not affect a target cell without specific receptor proteins within the cell or in the plasma membrane
What is cell signaling molecule?
Cells typically communicate using chemical signals. These chemical signals, which are proteins or other molecules produced by a sending cell, are often secreted from the cell and released into the extracellular space. There, they can float – like messages in a bottle – over to neigh
Not all cells can “hear” a particular chemical message. In order to detect a signal (that is, to be a target cell), a neighbor cell must have the right receptor for that signal.
When a signaling molecule binds to its receptor, it alters the shape or activity of the receptor, triggering a change inside of the cell. Signaling molecules are often called ligands, a general term for molecules that bind specifically to other molecules (such as receptors).
The message carried by a ligand is often relayed through a chain of chemical messengers inside the cell. Ultimately, it leads to a change in the cell, such as alteration in the activity of a gene or even the induction of a whole process, such as cell division. Thus, the original intercellular (between-cells) signal is converted into an intracellular (within-cell) signal that triggers a response.
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Answer the following Question Down Below...
Answers
The mass number of the atom is 21, the atomic number is 9, and the element is Fluorine. There are 9 protons, 9 electrons, 12 neutrons, and the elemental symbol is F.
Properties of an atomFor every atom:
Protons and neutrons are located in the nucleus and the addition of both equals the mass number of atoms.Electrons are located outside the nucleus, in orbitals.Neutral atoms have the same number of electrons and protonsIn the diagram:
Number of electrons = 9
Number of protons = 9
Number of neutrons = 12
Mass number = 12 + 9
= 21
Atomic number = number of protons
= 9
Element with atomic number 9 = Fluorine
Symbol of the element = F
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each of the following organizations has a liberal orientation except ________.
Answers
The organization that does not have a liberal orientation among the given options would be the American Conservative Union (ACU).
The American Conservative Union is known for its conservative ideology and principles. It is a political organization that advocates for conservative policies and values, promoting limited government, free markets, and traditional values. The ACU supports candidates and initiatives aligned with conservative principles, including limited government intervention, lower taxes, and a strong national defense.
On the other hand, liberal organizations typically advocate for progressive policies and values, emphasizing social equality, government intervention, and the protection of individual rights. These organizations often support causes such as civil rights, environmental protection, healthcare access, and social justice.
Therefore, among the given options, the American Conservative Union (ACU) stands out as an organization with a conservative orientation rather than a liberal one.
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what is the conservation of mass pertains the chemical change and physical change?
Answers
Answer:
Hey mate......
Explanation:
This is ur answer......
The Law of Conservation of MassMatter can change form through physical and chemical changes, but through any of these changes, matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.
The Law of Conservation of Matter also states that the matter cannot be created or destroyed. In a physical change, substances can change form, but the total mass remains the same. In a chemical change, the total mass of the reactants always equals the total mass of the products.
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Answer:
The Law of Conservation of Matter states that matter cannot be created or destroyed. In a physical change, substances can change form, but the total mass remains the same. In a chemical change, the total mass of the reactants always equals the total mass of the products.
Explanation:
Make a comparison between all five states of matter
Class 9
Answers
Answer:
States of Matter
Solid has fixed volume.
Solid has fixed shape.
Solid has high density.
Solids are heavy.
Solid does not flow.
The accepted density Tr value for this material is 2.7 g/cm³. What is the percent error and is the data accurate? Av A. 0.22 percent error and accurate B. 0.29 percent error and accurate C. 29 percent error and not accurate D. 22 percent error and not accurate
Answers
Let \(E\) be the experimental result and \(T\) be the theoretical result. If the error percentage of the experiment is to be found, the following formula should be used.
\(Error=\frac{|E-T|}{|T|} .100\)The arithmetic mean of \(3\) experiments is taken and accepted as the experimental result. If we put the data into the formula, we find the percentage of error.
\(Error=\frac{|2.1-2.7|}{|2.7|} .100\)\(Error=\frac{|0.6|}{|2.7|} .100\)\(Error=(0.222).100\)\(Error=22.22..\)According to the percentage of error, this experiment is not accurate.
The error is a means of expressing the accuracy of a measurement. The percentage error is . The correct option is D.
What is error?When there occurs a difference between the value of a physical measurement obtained for a person and its true or most probable value, we say that the measurement includes error.
The absolute error is the difference between the observed value and the true or most probable value of the quantity measured.
The percentage error or relative error is the ratio of the error to the true or most probable value. The relative error is more useful than absolute error. It is given as:
ER = x₀ - xₙ / xₙ
x₀ - observed value
xₙ - true value
ER = 2.1 - 2.7 / 2.7
= -22.22 %
The result is not accurate and has -22.22 % error.
Thus the correct option is D.
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what does Le châteliers principle state?
Answers
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what type of land use can result in nutrient depletion
Answers
Modeling Energy Changes
Student Guide
Answer in a copy and paste format, or using photos of what was said please.
Anyone who can do this will receive brainliest ofc!
Answers
In terms of the energy change in the reaction, the negative value indicates that the reaction is exothermic as the reaction releases 1560.74 kJ of energy for every mole of C2H6 that reacts with 7/2 moles of O2.
What is a model of chemical energy changes?The model of chemical energy changes is given below:
Balanced chemical equation:
C2H6 + 7/2 O2 → 2CO2 + 3H2O
Now, to calculate the energy change in the reaction, we will use a table of enthalpy values. The enthalpy change for each of the reactants and products is given in the table below:
Reactants:
C2H6: -84.68 kJ/mol
O2: 0 kJ/mol
Products:
CO2: -393.51 kJ/mol
H2O: -285.83 kJ/mol
The energy change in the reaction can be calculated using the formula:
ΔH = ∑(products) - ∑(reactants)
ΔH = [2(-393.51 kJ/mol) + 3(-285.83 kJ/mol)] - [-84.68 kJ/mol + 7/2(0 kJ/mol)]
ΔH = -1560.74 kJ/mol
Therefore, the energy change in the reaction is -1560.74 kJ/mol.
To create a model of the energy change in the reaction, we can use an energy level diagram. In this diagram, the energy of the reactants is shown on the left, the energy of the products is shown on the right, and the activation energy is shown as a barrier between them.
The energy level diagram for this reaction is shown below:
Reactants (C2H6 + 7/2 O2)
|
|
Activation energy
|
|
Products (2CO2 + 3H2O)
As shown in the diagram, the reactants have a higher energy level than the products, and the activation energy is required to get the reaction started.
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Write how you would read the following word equation:
hydrochloric acid + sodium acetate --> acetic acid + sodium chloride
Answers
Answer:
Step-1:write the reaction.
HCl+NaOH ----->NaCl+H₂O
Step-2:In the left side, we have
H
Cl
Na
O
Explanation:
What is recycling?
A
to use materials again and again to make something new.
b
produce new brand products and sell them.
c
living in the developed world but taking care of nature.
Answers
Answer:
A
Explanation:
I believe it's A sorry if any part of my answer is wrong i tried my best to help you improve
Protons Ha and Hb in the compound given are _________. homotopic enantiotopic diastereotopic mesotopic none of these
Answers
Protons Ha and Hb in the compound given are enantiotopic.
What are enantiotopic protons?Enantiotopic protons can be defined as those protons that can be replaced by another groups like deuterium.
What is a compound?A compound is a substance which contains two or more elements chemically combined together.
So therefore, Protons Ha and Hb in the compound given are enantiotopic.
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