Answers
Answer: organic
Explanation:
Related Questions
8. Base your answer to the following question on the equation below.
2H2(g) + O2(g) → 2H₂O()+571.6 kJ
Identify the information in this equation that indicates the reaction is exothermic.
Answers
The positive value of 571.6 kJwhich is the enthalpy change tells us that it is exothermic
What is an exothermic reaction?When energy is released into the surrounding area during a chemical reaction, it's considered an exothermic reaction with ΔH < 0. Conversely, endothermic reactions result from heat absorption with ΔH > 0.
The provided equation's positive value of 571.6 kJ reveals that heat is pouring out of the reaction, causing negative changes in enthalpy and firmly placing this chemical event as exothermic in nature.
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CC Energy and Matter Interpret the equation for the formation of water from its elements in terms of numbers of molecules, moles, and volumes of gases at STP.
2H2(g) + 02(g) - 2H20(g)
Answers
2 moles of water produces from 2 moles of hydrogen and 1 moles of oxygen. 2 molecules of water produces from 2 molecules of hydrogen and 1 molecules of oxygen. 2 liters of water produces from 2 liters of hydrogen and 1 liter of oxygen
Water is a substance that exists in gaseous, liquid, & solid phases and is made up of chemical components such as hydrogen and oxygen. Of the most prevalent and necessary substances is it. a liquid that is flavourless and odourless at normal temperature.
It has the critical capacity to dissolve a wide variety of other compounds. In fact, living things depend on water's adaptability as a solvent. It is thought that life first appeared in the water-based solutions of the oceans of the earth.
2H\(_2\)(g) + 0\(_2\)(g) → 2H\(_2\)O(g)
2 moles of water produces from 2 moles of hydrogen and 1 moles of oxygen
2 molecules of water produces from 2 molecules of hydrogen and 1 molecules of oxygen
2 liters of water produces from 2 liters of hydrogen and 1 liter of oxygen
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is electrical conductivity a physical property
Answers
Answer:
Yes
Explanation:
I doesn't change the substance or the chemical properties of the substance.
The mass number of Fe2+ is 56. How many neutrons are there in a single Fe2+ atom?
28
30
56
58
Answers
Answer:
A.) 28
Explanation:
The mass number is the number of protons and neutrons within a particular atom. The charge of the atom is irrelevant because the mass number is not affected by the number of electrons.
Unless this atom is an isotope (different number of neutrons), there should be an equal amount of protons and neutrons.
As such, since the mass number is 56, there should be 28 protons and 28 neutrons (56 / 2 = 28).
Please Answer Giving Brainleist
What gas in the air is used by plants to make their own food?
A) Nitrogen
B) Water vapor
C) Carbon dioxide
D) Oxygen
Answers
Answer:
C) Carbon dioxide is the answer.
Answer:
C. Carbon Dioxide
Carbon is absorbed by plants and chemically converted to oxygen via photosynthsis.
Hope this helps!
I need help I don’t understand this is hitting
Answers
Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.
Thus, They are additionally known as limiting reactants or limiting agents. A predetermined quantity of reactants are necessary for the reaction to be completed, according to the stoichiometry of chemical reactions.
In the aforementioned reaction, 2 moles of ammonia are created when 3 moles of hydrogen gas react with 1 mole of nitrogen gas.
In most cases, this reactant dictates when the reaction will end. The reaction stoichiometry can be used to determine the precise quantity of reactant that will be required to react with another element. The limiting agent is determined by the mole ratio rather than the mass of the reactants.
Thus, Reagents that are entirely consumed by a chemical reaction are known as limiting reagents.
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A sample of dry gas is found to occupy 3.650 L at 22.0°C and 740.0 mmHg. How many moles of gas are present?
will mark brainliest
Answers
Answer:
0.147
Explanation
PV/RT
1. Why does light bend when it changes medium?
Answers
Answer:
The bending of light as it passes from one medium to another is called refraction
Explanation:
For this assignment, you will make a scale model—a “core sample”—showing the layers of the Earth: crust, lithosphere, asthenosphere, mantle, outer core, and inner core.
Answers
-A large, clear plastic container
-A ruler
-A variety of different colored modeling clay
-A sharp knife
-A marker
Instructions:
1. Measure the height of the plastic container and mark it with the marker.
2. Cut the modeling clay into thin slices with the knife.
3. Begin layering the clay slices in the container, starting with the crust at the bottom.
4. Layer the lithosphere, asthenosphere, mantle, outer core, and inner core in order.
5. Use the ruler to measure the thickness of each layer and mark it with the marker.
6. Once all the layers are in place, your scale model of the Earth's layers is complete!
Hope that helps !?
Cardboard or foam board
Scissors
Glue
Markers or paint
Ruler
First, decide on a scale for your model. For example, you could use a scale of 1 inch = 1000 miles. This means that for every 1 inch on your model, it represents 1000 miles in the actual Earth.
Next, use your ruler to measure and cut out strips of cardboard or foam board to represent the layers of the Earth. The crust is the outermost layer and is relatively thin, while the inner core is the innermost layer and is the thickest. Use your markers or paint to label each layer and add any additional details or information you would like to include on your model.
Finally, glue the layers together in the correct order, starting with the crust at the top and ending with the inner core at the bottom. Your scale model of the Earth's layers is now complete!
a 98.5g bar was heated to 221.3C and placed in a coffee cup calorimeter containing 425.0 ml of water at 22.5C. what is the specific heat of copper?
Answers
Answer
Cp = 0.00204 J/g °C
Explanation
Given:
Mass of copper = 98.5 g
Initial temperature of copper = 221.3C
Volume of water = 425.0 ml = 0.425 L
Final temperature = 22.5C
Required: Specific heat of copper
Solution
Q = m x Cp x Dt where Q is the heat, m is the mass, Cp is the specific heat capacity and Dt is the change in temperature.
Step 1: Calculate the mass of water
density = mass/volume
mass = density x volume
mass = 1 g/L x 0.425 L
mass = 0.425 g
Step 2: Calculate Cp
Q metal = -Qwater
m x Cp x Dt = -(m x Cp x Dt)
98.5g x Cp x (22.5-221.3 C) = -(0.425g x 4.184 j/gC x 22.5)
-19581.8 g Cp = -40.0095
Cp = 0.00204 J/g °C
When chlorobenzene reacts with Mg in ether followed by CO2 and neutralization with dilute HCl, __________ will be formed.
a. p-chlorobenzoic acid
b. p-deuterobenzoic acid
c. benzoic acid
d. benzene
e. No correct response
Answers
Answer:
c. benzoic acid
Explanation:
The given reaction is an example of a Grignard reaction:
When chlorobenzene (C₆H₅Cl) reacts with Mg in ether, an intermediate is formed (C₆H₅MgCl).
Said intermediate then reacts with CO₂ producing a benzoic acid salt (C₆H₅CO₂X), this salt is then neutralized with dilute HCl producing benzoic acid (C₆H₅CO₂H).
What is atom . explain
Answers
Answer:
An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.
Answer:
An atom is a particle of matter that uniquely defines achemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.
Which of the following is an incorrect representation for a neutral atom?
36Li
613C
3063Cu
1530P
Answers
This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97. The incorrect representation for a neutral atom is 36Li
To determine the correct representation for a neutral atom, we need to consider the atomic number (Z) and mass number (A) of the element. The atomic number represents the number of protons in the nucleus, while the mass number represents the sum of protons and neutrons.
Let's analyze the given representations:
36Li:
This representation suggests that the element is lithium (Li) with a mass number of 36, which is incorrect. The correct mass number for lithium is approximately 6.94.
613C:
This representation suggests that the element is carbon (C) with a mass number of 13, which is correct. Carbon has different isotopes, and 13C represents one of its stable isotopes.
3063Cu:
This representation suggests that the element is copper (Cu) with a mass number of 63, which is correct. Copper has different isotopes, and 63Cu represents one of its stable isotopes.
1530P:
This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97.
Therefore, the incorrect representation for a neutral atom is 36Li, as it does not match the known properties of lithium.
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Which example demonstrates divergence?(1 point)
Answer fast pls
Responses
Species A goes extinct.
Species A goes extinct.
Species A and B evolve into species C.
Species A and B evolve into species C.
Species A evolves into species B and C.
Species A evolves into species B and C.
Species A does not evolve.
Answers
The example that demonstrates divergence is as follows: Species A evolves into species B and C (option C).
What is divergence in biology?Divergence as it relates to evolution refers to an evolutionary process wherein a population of an inbreeding species diverges into two or more descendant species that have become more and more dissimilar in terms of forms and structures.
In essence, groups from the same common ancestor evolve and accumulate differences, resulting in the formation of new species.
According to this question, option C is the correct answer.
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Which of the following best helps to explain why the value of ÎH° for the dissolving of CaF2 in water is positive? Ca+2 ions have very strong ion-ion interactions with F- ions in the crystal lattice.
Ca2+ ions have very strong ion-dipole interactions with water molecules in the solution.
CaF2(s) dissolves in water to form CaF2(aq) particles.
CaF2(s) is insoluble in water.
Answers
Which of the common recommended contributes to the justification for the positive value of ÎH° for CaF2 dissolving in water? Inside the crystal lattice, Ca+2 ions and F- ions interact very intensely.
A lattice is indeed a collection of dots arranged in an use often. Similar to a lattice, a crystal's lattice structure is made up of the a chain of atoms rather than points. An atom often is represented by each vertex of a symmetrical geometric form that makes up a crystal lattice. A lattice is an ordered collection of points that characterises a crystal-forming particle's structure. The lattice points help identify a crystal's unit cell. Yellow particles in the illustrated model are identical to each other.
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does the reaction Fe + CuNO3 occur
Answers
Answer:
yes
Explanation:
If electrons jump from a lower energy shell to a higher energy shell, they are said to be ____
Answers
Answer:
they are said to be excited.
Explanation:
excitation is a fundamental concept in atomic physics that helps explain many of the properties and behaviors of matter on both the macroscopic and microscopic scales.
What process is most likely to immediately follow the replication of DNA?
Question 5 options:
Mitosis
Translation
Replication
Transcription ****************
Answers
The process is replication
In the process of cell division and synthesis of new DNA, the stage after replication is called as transcription at which the DNA segments are copied into a RNA molecule.
What is transcription?Replication is the process of dividing the a DNA segment into two equivalent strands. After replication, these two strands will pair with their complementary RNA strands and the second stage is called transcription.
The process of transcribing a section of DNA into RNA is known as transcription. Messenger RNA is created when specific DNA sequences are translated into RNA molecules that can encode proteins (mRNA).
Non-coding RNAs are RNA molecules that contain copies of other DNA sequences (ncRNAs). The RNA is termed as messenger RNA (mRNA) if the stretch of DNA is translated into an RNA molecule that encodes a protein. The mRNA then acts as a template for the translation of the protein.
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List 2 types of bacteria
Answers
"Spherical: Bacteria shaped like a ball are called cocci, and a single bacterium is a coccus. Examples include the streptococcus group, responsible for “strep throat.”
Rod-shaped: These are known as bacilli (singular bacillus). ...
Spiral: These are known as spirilla (singular spirillus). " - Medical News Today
NEED HELP!!! Thank u!!!!
Answers
Answer:
D
Explanation:
the correct answer is d
Answer:
d
Explanation:
Its just seem like NaCl structure
Consider the reaction below:
2 CO(g) + O₂(g) ⇌ 2 CO₂(g)
If Kc is 2.24 × 10²² at 1273.0 °C, calculate Kp at the same temperature.
Answers
The Kc is 2.8 * 10^24
What is the Kp?In chemistry, Kp usually refers to the equilibrium constant of a reaction that involves gases. It is defined as the ratio of the partial pressures of the products to the partial pressures of the reactants, each raised to the power of their stoichiometric coefficients.
Kp= Kc (RT)^Δn
Thus;
Kc = Kp/(RT)^Δn
Kc = 2.24 × 10²² /(0.082 * 1546)^-1
Kc = 2.8 * 10^24
Thus the Kc of the reaction when we consider the concentration of the reactants is 2.8 * 10^24
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What is the concentration of a solution made by dissolving 6.5 g of CaCl2 in 0.50L of water?
Answers
0.11M is the concentration of a solution made by dissolving 6.5 g of CaCl\(_2\) in 0.50L of water
Concentration in chemistry is calculated by dividing a constituent's abundance by the mixture's total volume. Mass concentration, concentration in moles, numerical concentration, & volume concentration are four different categories of mathematical description.
Any type of chemical mixture can be referred to by the term "concentration," however solvents and solutes in solutions are most usually mentioned. There are different types of molar (quantity) concentration, including normal concentration or osmotic concentration.
Molarity = number of moles/ volume of solution in liter
number of moles = 6.5/ 110.9= 0.05moles
Molarity =0.05/0.50=0.11M
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The decomposition of cyclohexane to benzene and Martialism is a high mass transfer limited period on the planet. The reaction will be carried out in a tubular reactor with an internal diameter of 5 cm and a length of 20 m; the pipes are filled with cylindrical pellets 0.5 cm in diameter and 0.5 cm in length. The pellets are only covered with the outer surface coating. The filled bed porosity is 40%. The inlet flow rate is 60 dm3/min.
Plot the tubular length vs. conversion graph when the inlet gas stream contains 5% cyclohexane and 95% hydrogen at 2 atm and 500°C. What would be the required tubular length for 99.9% conversion?
For cyclohexane diffusion in hydrogen, use the Fuller, Schettler, and Giddings Correlation given below.
Answers
The required tubular length for 99.9% conversion is 116.84 meters.
On Earth, the rate at which cyclohexane reacts with benzene and methylcyclopentane is constrained by high mass transfer.
A tubular reactor with an internal diameter of 5 cm and a length of 20 m will be used to conduct the reaction, and cylindrical pellets with dimensions of 0.5 cm in diameter and 0.5 cm in length will be placed within the reactor's pipes.
Only the exterior surface of the pellets are coated.
The packed bed has a 40% porosity and a 60 dm3/min intake flow rate.
When the intake gas stream includes 5% cyclohexane and 95% hydrogen at 2 atm and 500°C, the tubular length vs. conversion graph should be drawn.
The graph may be used to identify the minimum length of tube necessary for 99.9% conversion.
For cyclohexane diffusion in hydrogen, the Fuller, Schettler, and Giddings Correlation is as follows:
a = 0.8854,
b = 1.764102,
C = 6.0231023.
The tube length vs. conversion graph may be displayed at 2 atm and 500°C when the incoming gas stream includes 5% cyclohexane and 95% hydrogen.
The following equation may be used to determine the rate of reaction:
ra=2.31011 exp[-88580/RT]C_A(1X)/3
The mole balancing equation for an isothermal tubular reactor is given as
dX/dL = -ra/C A,
where X is the conversion and L is the length.
To determine the length of the tubular reactor needed for a specific conversion X, we can integrate the aforementioned equation from X = 0 to X = X.
We must numerically calculate the following equation to obtain the necessary tube length for 99.9% conversion:
∫0.999L0−ra/CA
dL=0.999XEq L
for X=0.999
After rearranging the equation above, we get:
0.999L0ra/CA
dL=XX Eq
The aforementioned equation is integrated to give us
L = 116.84 m.
Therefore, the required tubular length for 99.9% conversion is 116.84 meters.
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As the speed changed, what did you notice about the molecules’ freedom of movement? (amplify science)
Answers
Answer:
The molecules in a gas have more freedom of movement than molecules in a liquid. Molecules in gas are free to move away from each other, so gas can expand to fill its container.
Explanation:
Water turns from a liquid into a gas known as water vapor. Compared to molecules in a liquid, gas molecules are more flexible.
What is water vapor ?The gaseous phase of water is known as water vapor, water vapor, or aqueous vapor. Within the hydrosphere, it is one type of water state. Water vapor can be created by the boiling or evaporation of liquid water, as well as by the sublimation of ice. Like the majority of other atmospheric elements, water vapor is transparent.
As a result of the water molecules' vibrations caused by heat, some of the water's molecules escape into the atmosphere and turn into water vapor, or the gaseous state of water. We call it evaporation for this reason. Water turns into a gas known as vapor.
Thus, water turns from a liquid into a gas known as water vapor. Compared to molecules in a liquid, gas molecules are more flexible.
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What is the volume of 1g of ice in cm3?
Answers
Answer:
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
Explanation:
Is a compound a mixture or a pure substance
Answers
Answer:
A compound is a pure substance.
What is the shorthand or noble
gas electron configuration for
tellurium, Te?
Answers
The shorthand or noble gas electron configuration for tellurium (Te) is [Kr]5s²4d¹⁰5p⁴.
The electron configuration of Te describes the arrangement of its electrons in different energy levels and orbitals. The electron configuration notation is a shorthand method for writing the distribution of electrons among different shells and subshells.
Te has an atomic number of 52, meaning that it has 52 electrons distributed among its different shells and subshells. The first two electrons of Te occupy the 1s subshell, the next two electrons occupy the 2s subshell, and the next six electrons occupy the 2p subshell.
The following ten electrons occupy the 3d subshell, and the next two electrons occupy the 4s subshell. After that, ten electrons occupy the 4d subshell. The remaining six electrons are found in the 5p subshell.
The noble gas electron configuration for Te is [Kr]. This means that Te's outermost shell is similar in electron configuration to that of Kr, which is a noble gas. The noble gas electron configuration for Te indicates that its outermost shell contains six valence electrons (5s²5p⁴), which can participate in chemical reactions.
The full configuration including the noble gas indicates that the outermost electrons for Te are in the p subshell, which is useful for predicting reactivity.
In summary, the noble gas electron configuration for tellurium is [Kr]5s²4d¹⁰5p⁴. This notation helps to describe the electron arrangement of Te in a concise manner and indicates that the outermost shell of Te is similar to that of Kr, which is a noble gas.
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Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water H2O and carbon dioxide CO2 chemically react to form the simple sugar glucose C6H12O6 and oxygen gas O2.
What mass of water is consumed by the reaction of 6.49g of carbon dioxide?
Answers
ANSWER:
2.65 g H2O
Explanation:
6.49g (co2) / 44.009g (co2) x 1 mol (co2) / 1 mol (h2o) x 1 mol (h2o)
=0.147 mol H2O
0.147 mol (H2O) / 1 mol (h2o) x 18.015 g (h2o)
=2.65 g H2O
Why KHPo4 ignore effective as a buffer but kh2po4 is not
Answers
KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.
KHPo4 is not considered an effective buffer compared to KH2PO4 due to its limited buffering capacity. The effectiveness of a buffer is determined by the concentration and dissociation properties of its conjugate acid-base pair.
KH2PO4 is a salt composed of the weak acid H2PO4- and its conjugate base HPO4^2-. In an aqueous solution, KH2PO4 can dissociate to release H+ ions from the H2PO4- component, which acts as a weak acid, and the HPO4^2- component can accept H+ ions, acting as a weak base. This allows KH2PO4 to effectively resist changes in pH when small amounts of acid or base are added to the solution.
On the other hand, KHPo4 consists of the strong acid H3PO4 and the weak base HPO4^2-. H3PO4 fully dissociates in water, providing a large concentration of H+ ions, making it difficult for the HPO4^2- to effectively act as a base and maintain pH stability.
Therefore, KH2PO4 is a more suitable choice as a buffer because it has a greater buffering capacity due to the presence of the weak acid and its conjugate base.
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The structures of D-ribose and D-arabinose are shown below. These two molecules are
Tautomers
Enantiomers
Anomers
Epimers
Answers
The structures of D-ribose and D-arabinose are epimers as the configuration of only one asymmetric carbon is different. Therefore, option (D) is correct.
What are epimers?In stereochemistry, an Epimer can be specified as one of a pair of stereoisomers. Two isomers present in the molecule differ at the stereogenic center while the rest remain identical.
A molecule contains many stereocenters leading to different stereoisomers. Stereoisomers are molecules that contain the same constitution and molecular formula in the three-dimensional orientations of their atoms in space.
D-ribose and D-arabinose epimers create a single difference at the C-2 asymmetric carbon atom. Therefore, the given two molecules are epimers.
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