Using the two amino acids alanine and glycine, show a dehydration synthesis reaction forming a dipeptide. Draw the dipeptide of two amino acids joined together by a peptide bond. Label the peptide bond with an arrow. The position of the peptide bond is also the place in the molecule where a water molecule was removed and the two amino acids were joined by a dehydration synthesis reaction (also sometimes referred to as a condensation reaction).
Answers
A protein is composed of a combination of amino acids.
What is a peptide bond?A protein is composed of a combination of amino acids. The amino acids join together in a peptide bond. A number of peptide bonds give polypeptides which are the building blocks for proteins.
Now, we can see from the image that the polypeptide bond occurs between the carboxylic group of the glycine and the amine group of the alanine.
This leads to a loss of water molecule and a subsequent formation of the amide bond by condensation.
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Related Questions
If heat is going INTO the system, that means that energy must have come OUT FROM the?
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If heat is going into the system, then energy must have come out from the surroundings.
If heat is entering a system, it means that the system is gaining thermal energy, which can lead to an increase in temperature, changes in state, or other effects depending on the nature of the system and the heat transfer mechanism.
The first law of thermodynamics, also known as the law of conservation of energy, states that the total amount of energy in a closed system remains constant, and energy can neither be created nor destroyed, only transferred or converted from one form to another.
When heat enters a system, it is either used to increase the internal energy of the system or to perform work, such as moving a piston or driving an electrical generator.
The amount of heat transferred to a system can be quantified using the equation Q = mcΔT, where Q is the heat transferred, m is the mass of the substance, c is its specific heat capacity, and ΔT is the change in temperature.
Therefore, if the system is gaining energy in the form of heat, then the surroundings (the rest of the universe) must be losing that same amount of energy. This is because energy is conserved.
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compared to pure water, an aqueous solution of calcium chloride has a
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Hope that helps :)
1. Cause and Effect What is the main cause of
any change of state?
Answers
Answer:Changes of state are physical changes. They occur when matter absorbs or loses energy. Processes in which matter changes between liquid and solid states are freezing and melting. Processes in which matter changes between liquid and gaseous states are vaporization, evaporation, and condensation
Explanation:
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Question 2 of 10
Which of the following has the lowest entropy?
O A. 02(9)
O B. H20(1)
O c. H2O(s)
O D. H20(9)
Answers
A) 02(9)
hope it help you(•‿•)
Entropy is defined as the degree of disorder of a system.
As the degree of disorder of water is given by
Solid<Liquid<GasEntropy is more in gaseous state of water.
Option d is correct
A fusion reaction. This reaction takes place at the core of the sun and on other stars in the universe. This equation represents a reaction that takes place on the sun. Based on what you know about fusion reactions, complete the fusion reaction below. Find the following: Mass Number: Atomic Number: Chemical Symbol:
Answers
The reaction shown uses the notation for atomic number and mass number on the elements.
The bottom left number is the atomic number and it is related to which is the element. This number accounts just for the number of neutrons in the element.
The top left number is the mass number and it accounts for the number of particles that have considerable mass. This number accounts for the number of protons and neutrons.
We can't loss any particles in a nuclear reaction, so we have to count how many of each we have at start and at the end we must have the same.
At the start we have ₁²H and ₁³H.
The first, ₁²H, has mass number 2 and atomic number 1. The atomic number is the same as the number of protons, so it has 1 proton. the mass number is the sum of the number of protons and neutrons. Since we have mass number 2 and 1 proton, the other has to be a neutron.
So, there is 1 proton and 1 neutron.
The second, ₁³H, has mass number 3 and atomic number 1. So, the same number of protons, 1 proton, but now we have 2 neutrons, because we have 3 as mass number.
So, there is 1 proton and 2 neutrons.
At the end we have energy, which won't count any particles, we have an unknown particle, X, and ₀¹n.
The ₀¹n has atomic number 0, so there are no protons, that is, the mass number is all from neutrons. Since the mass number is one, we have 1 neutron. This is actually a single neutron, as noted by the "n".
Now, at the start we have:
1 proton + 1 proton = 2 protons
1 neutron + 2 neutrons = 3 neutrons
At the end we have 1 neutron and the rest must be all in X.
That is, all 2 protons have to be in X and 2 of the 3 starting neutrons must be in X.
So, X must have atomic number 2 (since it has 2 protons) and mass number 2 + 2 = 4 (since it has 2 protons and 2 neutrons).
Consulting a periodic table, we see that the element that has atomic number 2 is helium, He.
Thus, the particle is:
\(X=^4_2He\)So:
Mass number: 4
Atomic number: 2
Chemical symbol: He
following the formal sign convention, please match the heat and work interactions with their appropriate signs:
Answers
The formal Positive sign convention for, work done by the system and heat transfer into the system. The Negative sign convention for heat transfer out of the system and work done to the system.
Thermodynamics is a special branch of chemistry that deals with concepts of heat, temperature and work and interconversion of heat into other forms of energy. Sign convention for heat : Heat transfer into the system is positive and heat transfer from the system is negative. In other words, all heat exchanges that increase the energy of a system are positive and all heat exchanges that decrease the energy of a system are negative. Sign rule for work :
If the task is running on the system, its sign is positive.If the system works, the sign is negative.To learn more about thermodynamics, refer:
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Complete question:
Following the formal sign convention, please match the heat and work interactions with their appropriate signs:Positive or Negative
1) work done by the system
2) heat transfer into the system
3) heat transfer out of the system
4) work done to the system
(a) Define
(a) chromatography
(b) TLC
(c) retention factor (Rf)
(b) Identify two factors that affect the retention factor values.
(c) Give the equation that can be used for the calculation of Rf.
Answers
Chromatography is a laboratory technique used to separate and analyze mixtures of molecules based on their physical and chemical properties, such as their size, charge, and polarity. The technique involves passing a mixture of molecules through a stationary phase, such as a column or a thin layer of material, which separates the molecules based on their interactions with the stationary phase.
What is TLC about?TLC stands for Thin Layer Chromatography, which is a specific type of chromatography that uses a thin layer of material, such as silica gel or alumina, as the stationary phase.
Retention factor (Rf) is a measure of how far a molecule travels through the stationary phase relative to the distance traveled by the solvent front. Rf is calculated by dividing the distance traveled by the compound by the distance traveled by the solvent front.
Two factors that can affect retention factor values are the polarity of the stationary phase and the polarity of the mobile phase. The polarity of the stationary phase affects how strongly the molecules in the mixture interact with the stationary phase, while the polarity of the mobile phase affects how easily the molecules can move through the stationary phase.
In conclusion, equation that can be used for the calculation of Rf is:
Rf = distance traveled by compound / distance traveled by solvent front
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A mixture of 0.197 mol carbon dioxide and 0.00278 mol water vapor is held at 30.0 C and 2.50 atm. What is the partial pressure of each gas?
Answers
The partial pressure of each gas is the product of its mole fraction and total pressure. The partial pressure of carbon dioxide is 2.46 atm and the partial pressure of water vapor is 0.034.
What is Dalton's law of partial pressures ?Dalton's law of partial pressure states that the partial pressure of the component gases in a mixture is the product of its mole fraction and the total pressure.
Given that, number of moles of carbon dioxide = 0.197 moles.
number of moles of water vapor =0.00278 mole.
mole fraction of carbon dioxide = 0.197 / (0.197 + 0.00278) = 0.98
Total pressure = 2.50 atm
then partial pressure of carbon dioxide = 0.98 × 2.50 = 2.46 atm
Mole fraction of water vapor = 0.00278 / (0.197 + 0.00278) = 0.0139
partial pressure of water vapor = 0.0139 × 2.50 = 0.034 atm.
Therefore, the partial pressure of carbon dioxide and water vapor are 2.46 and 0.034 atm respectively.
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Glassblower creating sculptures out of glass physical or chemical
Answers
Answer:
phsical
Explanation:
it is a phisical cuz your only changing the shape not the chemical structure
What do you think it is?
Answers
Substances that are physical combinations of two or more different types of matter are known as
Answers
Answer:
A mixture!
Explanation:
Mixtures are a substance made of combining two or more different kinds of matter :)
Hope this helped!
In what order do electrons fill orbitals?
A. Before pairing, 1 electron occupies each s and p orbital.
B. Electrons fill orbitals in order of increasing orbital energy.
C. Orbitals s, p, and then d fill in one energy level before starting the
next level.
D. The p orbitals fill before the s orbitals in an energy level.
SUBM
Answers
Answer:B electrons fill orbitals In order of their increasing energy from left to right
Explanation:
Gaseous methane CH4 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 0.963 g of methane is mixed with 1.2 g of oxygen. Calculate the maximum mass of water that could be produced by the chemical reaction. Round your answer to 2 significant digits.
Answers
Answer:
\(m_{H_2O}=0.676gH_2O\)
Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us to calculate the maximum mass of water by firstly setting up the undergoing chemical reaction as follows:
\(CH_4+2O_2\rightarrow CO_2+2H_2O\)
Thus, we are able to firstly calculate the moles of water produced by both methane and oxygen in order to identify the limiting reactant, which is related to maximum of water:
\(0.963 gCH_4*\frac{1molCH_4}{16gCH_4}*\frac{2molH_2O}{1molCH_4} =0.120molH_2O\\\\1.2gO_2*\frac{1molO_2}{32gO_2}*\frac{2molH_2O}{2molO_2} =0.0375molH_2O\)
Thus, we infer the limiting reactant is O2 and therefore we can obtain up to 0.0375 moles of water, which are related to the following mass:
\(m_{H_2O}=0.0375molH_2O\frac{18.02gH_2O}{1molH_2O}=0.676gH_2O\)
Regards!
how many pi bonds do triple bonds have
Answers
Answer:
Two pi bonds, one sigma bond.
Explanation:
A triple bond has three bonds:
2 pi bonds, and one sigma bond.
Answer:
Two pi bonds & one sigma bond.
A triple bond is made of:
2 pi bonds1 sigma bondHope it helps!
In a science demonstration, a teacher mixed zinc (Zn) with hydrogen chloride (HCl) in a flask and quickly attached a balloon over the mouth of the flask. Bubbles formed in the solution and the balloon inflated.
What most likely occurred during this demonstration?
a.The Zn and HCl both retained their identity.
b.Either Zn or HCl, but not both, retained its identity.
c.Evaporation of one of the substances occurred.
d.One or more new substances formed.
Answers
Answer:
a. The Zn and HCl both retained their identity.
Assign priorities in the following set of substituents according to Cahn-Ingold-Prelog rules.-Cl, -OH, -CH_2OH, -CH_2SHA B C D(Provide your ranking through a string like abed, starting with the one with the highest priority. Your answer does not need to be capitalized.)
Answers
Answer:
1) \(-Cl\)
2) \(-OH\)
3) \(-CH_2SH\)
4) \(-CH_2OH\)
Explanation:
We have the substituents:
a) \(-Cl\)
b) \(-OH\)
c) \(-CH_2OH\)
d) \(-CH_2SH\)
If we remember that Cahn-Ingold-Prelog rules the highest priority is given by the atomic number. Therefore the highest priority is "Cl" (an atomic number equal to 17), the next one is "OH" due to the oxygen (an atomic number equal to 8). For c) and d) we have a carbon bonded to the chiral carbon, therefore we have to check the next atom. The difference between c) and d) are the "O" and "S" atoms, the atom with the highest atomic number is "S" (an atomic number equal to 16) therefore the highest priority is for d) and then c). So finally, the priority is:
1) \(-Cl\)
2) \(-OH\)
3) \(-CH_2SH\)
4) \(-CH_2OH\)
I hope it hepls!
electronic configuration of organic compounds
Answers
The electronic configuration of organic compounds depends on the orbitals of their atoms and molecules.
What is electronic configuration?The expression 'electronic configuration' makes reference to the spacial arrangement of electrons in distinct energy orbitals of an atom/molecule.
The orbitals are designed with numbers and letters, whereas the amount of electrons in each orbital is expressed as superscripts (e.g., 1s² 2s² 2p² in the C atom that form glucose).
In conclusion, electronic configuration of organic compounds depends on the orbitals of their atoms and molecules.
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A small amount of chemical splashes in Frank’s eye. What should Frank do immediately?
Answers
Answer:
A small amount of chemical splashes in Frank's eye. What should happen next? Frank should go to the eyewash station while his lab partner tells the teacher what happened.
Explanation:
Brainlist
If container A has a volume of 2.03 liters and a pressure of 1.3 atm, Container B has a volume of 0.98 liters with a pressure of 2.16 atm and container which has a volume of 1.55 liters and a pressure of 1.65 atm are mixed in Container D, which has a volume of 2.54 liters, what is the total pressure in container D?
Answers
In this question, we need to find the total pressure of container D, based on the mixture of the partial pressures of the previous containers, the partial pressures are: A = 1.3 atm, B = 2.16 atm and C = 1.65 atm
Total pressure is defined as the sum of all partial pressures, therefore we will have:
D = A + B + C
D = 1.3 + 2.16 + 1.65
D = 5.11 atm
The total pressure in D will be 5.11 atm
How many moles of MgS are in 100.g MgS?
Answers
Answer:
Explanation:
100/56 = 1.79 moles MgS
56 came from the periodic table for Mg and S
The models show the phases of a substance at various temperatures. Which model BEST communicates the kinetic energy and particle arrangement of a liquid? A. Model D, because it has high kinetic energy so the particles in the model have ionized B. Model B, because it has some kinetic energy and the particles have a free flowing shape C. Model C, because it has high kinetic energy so the particles in the model have no definite shape D. Model A, because it has some kinetic energy and the particles move freely
Answers
Answer: Model B. I have included a graph for this question. Model D is incorrect because that is a model for plasma as liquid doesn't contain ionized particles. Model C is incorrect as that represents a solid. Model A is incorrect because that is showing a gas; the particles are moving very freely
According to the forces of attraction, model B communicates the kinetic energy and particle arrangement of a liquid.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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Your question is incomplete but most probably your full question was, The models show the phases of a substance at various temperatures. Which model BEST communicates the kinetic energy and particle arrangement of a liquid? A. Model D, because it has high kinetic energy so the particles in the model have ionized B. Model B, because it has some kinetic energy and the particles have a free flowing shape C. Model C, because it has high kinetic energy so the particles in the model have no definite shape D. Model A, because it has some kinetic energy and the particles move freely
Explain why the following picture illustrates the relationships between voltage, current and resistance. (hint: start with Ohm's Law)
Answers
Answer:
Explanation:
We can see that this picture can be used to show Ohm's Law graphically so it illustrates Ohm's Law.
According to Ohm's Law electric current is directly proportional to voltage and inversely proportional to resistance.
Mathematically, V ∝ I,
or V=IR,
where, V ⇒ voltage difference between two points,
I ⇒ current flowing through the resistance,
R ⇒ proportionality constant or resistance.
According to the picture voltage ( SI unit Volt ) is supporting the current ( SI unit Ampier ) to move out from the barrier while the resistor ( SI unit Ohm )is acting as a barrier to its way . As it is satisfying the Ohm's Law it illustrates the relationship between voltage, current, and resistance.
What is also known as neutralization? 1. Acid-base 2. Redox 3. Precipitation
Answers
Answer:
acid base
Explanation:
plz mark me brainliest
when electric current is applied externally, which of the following produces a redox reaction: A wood. B. electrolytic C. Solid
Answers
Answer:
the answer is a
Explanation:
How many grams of Zn are in 0.356 mole of Zn?
Answers
Answer:
23.3 g
Explanation:
0.356 mole × 65 = 23.3 g
when two water molecules are near each other, a hydrogen bond will form between the more positive and the more negative atoms of neighboring water molecules. t or f
Answers
It is false that when two water molecules are near each other, a hydrogen bond will form between the more positive and the more negative atoms.
What is the composition of a water particle?A water particle is composed of two hydrogen atoms and one oxygen atom.
How do water particles bond?When there are two water particles close a bond is formed between the hydrogen atom of one particle and the oxygen atom of a neighbor water particle, which means there is a hydrogen-oxygen bond rather than a hydrogen-hydrogen bond.
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It is True that when two water molecules are near each other, a hydrogen bond will form between the more positive hydrogen atom of one molecule and the more negative oxygen atom of the neighboring molecule.
How is water molecules formed?A water molecule is made up of two hydrogen atoms bonded to an oxygen atom, and its overall structure is bent. This is because the oxygen atom, forms a bond with hydrogen atoms. It also carries two pairs of unshared electrons. All of the electron pairs (shared and unshared) repel each other.
Hydrogen bond will form between the more positive and the more negative atoms of neighboring water molecules when two water molecules are near each other. This is due to the polar nature of water molecules, which have a slightly positive charge on the hydrogen atoms and a slightly negative charge on the oxygen atoms. These hydrogen bonds give water many of its unique properties, such as its high surface tension and high heat of vaporization.
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how many grams of MgCl2 are contained in 0.50 L kc a 1.5 m solution?
Answers
0.50 L of a 1.5 m solution contains 71.4 grams of MgCl2.
To solve this problemThe equation moles of solute = molarity x volume (in liters) can be used.
When converting to grams, we may use the molar mass of the MgCl2 to determine how many moles there are in the solution.
MgCl2 has a molar mass of roughly 95.21 g/mol.
The volume must first be changed from liters to milliliters:
0.50 L = 500 mL
Next, we may determine how many moles of MgCl2 are present in the solution:
moles of MgCl2 = molarity x volume (in liters)
moles of MgCl2 = 1.5 mol/L x 0.50 L
moles of MgCl2 = 0.75 moles
Finally, we can figure out how much MgCl2 is present in the solution:
mass of MgCl2 = moles of MgCl2 x molar mass
mass of MgCl2 = 0.75 moles x 95.21 g/mol
mass of MgCl2 = 71.4 grams
Therefore, 0.50 L of a 1.5 m solution contains 71.4 grams of MgCl2.
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Complete the Molecular formula, complete ionic equation and net ionic equation for the following:
Answers
The molecular formula for sodium nitrate is NaNO₃, and the molecular formula for potassium acetate is KCH₃COO.
Complete ionic equation:
Na⁺(aq) + NO₃⁻(aq) + K⁺(aq) + CH₃COO⁻(aq) → Na⁺(aq) + CH₃COO⁻(aq) + K⁺(aq) + NO₃⁻(aq)
Net ionic equation:
NO₃⁻(aq) + CH₃COO⁻(aq) → no reaction
The net ionic equation shows that there is no reaction between sodium nitrate and potassium acetate. When these compounds are mixed, they will dissociate into their respective ions in solution, but these ions do not react with each other to form any new compounds or products. Therefore, the net ionic equation is simply the two ions that remain in solution after dissociation.
When sodium nitrate (NaNO₃) and potassium acetate (KCH₃COO) are mixed in water, they dissociate into their respective ions due to the polar nature of water molecules.
The net ionic equation shows only the species that are involved in the actual reaction, which in this case is no reaction. We can see that the NO₃⁻ and CH₃COO⁻ ions are both present on both sides of the equation, meaning that they do not react with each other. Therefore, there is no change in the identity of the species present in solution, and no new compounds are formed.
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In Georgia, there are specific rules and daily catch limits when it comes to fishing. For example, the daily limit for largemouth bass
is 10, rainbow trout is 8, and there is no daily catch limit for catfish. Which of these best explains why Georgia has regulations on
the number of specific fish that can be caught daily?
Answers
The best explains why Georgia has regulations on the number of specific fish that can be caught daily is because overfishing.
What are the consequences of overfishing?Overfishing affects the natural balance of the oceans, destabilizing the food chain, disrupting local ecosystems and destroying marine habitats for marine life. It is a threat to all marine biodiversity, not only to target species, but also to bycatch.
By definition, fishing is any and all act with the objective of removing, harvesting, catching, extracting or capturing any fishery resources in aquatic environments, and may be carried out in a scientific, economic, commercial, sporting or subsistence nature.
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What is the concentration (molarity) of a solution of NaCl if 350. mL of a 2.5 M NaCl solution is diluted to a total volume of 5.0 mL? (NEED HELP ASAP)
Answers
The concentration (molarity) of the final NaCl solution is 175 M.
To find the concentration (molarity) of the final NaCl solution, we can use the equation:
M1V1 = M2V2
Where M1 is the initial concentration, V1 is the initial volume, M2 is the final concentration, and V2 is the final volume.
In this case, we have an initial NaCl solution with a concentration of 2.5 M and a volume of 350 mL (0.350 L). We are diluting this solution to a total volume of 5.0 mL (0.005 L).
Plugging these values into the equation, we have:
(2.5 M) * (0.350 L) = M2 * (0.005 L)
Simplifying the equation:
0.875 = 0.005 * M2
Dividing both sides by 0.005:
M2 = 0.875 / 0.005
M2 = 175M
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