is the given amino acid (alanine) below l or d configured and is it the natural/common or the unnatural/uncommon form?

Protons All Elements' Neutrons & Electrons (List + Images) Atomic number: all protons, neutrons, and electrons 5 Boron is made up of 5 protons, 6 neutrons, and 5 electrons.

6 Carbon consists of 6 protons, 6 neutrons, and 6 electrons. Protons, neutrons, and electrons total seven for nitrogen. Oxygen contains 8 protons, 8 neutrons, and 8 electrons. 34 more rows

Protons All Elements' Neutrons & Electrons (List + Images) 1 Atomic number All Elements Have Two Electrons. Diagram of 3 Shells 4 Neon Magnesium (5) Aluminum 6 Phosphorus 7 Sulfur 8 9 Argon Potassium 10 More things...

All elements' protons, neutrons, and electrons Diagram of a shell One proton, zero neutrons, and one electron make up hydrogen. Helium contains two protons, two neutrons, and two electrons.

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Answer:

A.physical

A.physical

Explanation:

The measurable properties are said to be the physical property of the substance. The conductivity of heat and the sweet odor are physical properties. Thus, options 1. a and 2. a is correct.

Physical properties are the characteristics of the substance that can be measured and observed directly. There is only change in the phases of matter involved.

The alterations in the chemical compositions and reactivity are not characteristic of the physical properties. It does not occur or requires a chemical reaction.

The copper conducting heat and the sweet smell of alcohol are physical properties as conductivity and odor are the physical traits along with malleability, hardness, solubility, etc.

Therefore, the conductivity of copper and sweet smell are physical properties.

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Answer:

im assuming you need the balanced equation

Explanation:

Zn + MgCl2 = ZnCl2 + Mg

Answer:

it will mgcl2 + zn

Explanation:

Mg will replace zn from its salt solution

to form mgcl2

hope it helps

Rain freezing is a condition of "exothermic" process. The freezing rain emits thermal energy, which is then transmitted to the earth. The earth will receive thermal energy if the rain loses thermal energy. As a result, the ground's temperature rises.

Due to the salt in saltwater, it freezes at a lower temperature than fresh water, approximately 28.4 degrees Fahrenheit (ca. -2 °C). However, because only the water portion of saltwater freezes, very little salt is present in the ice when it is formed. Water may be made from it by melting it down.

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In fact, sodium, potassium, or ammonium sulfates enhance ligand-protein interactions in HIC while also stabilizing protein structure. As a result, the most prevalent ions are (NH4)2SO4, Na2SO4, NaCl, KCl, and CH3COONH4. Figure 1 depicts how various salts can influence selectivity. The highest resolution of four standard proteins was achieved by starting with 1.7 M ammonium sulfate.

Because each salt has a different capacity to encourage hydrophobic interactions, selecting a salt for an HIC separation can be a trial and error process. When the concentration of a salt rises, the quantity of protein bound increases almost linearly up to a certain salt concentration and then exponentially at greater concentrations.When compared to other salts, ammonium sulfate often provides the greatest clarity at a particular concentration and can be used at ratios up to 2 M.

When using sodium chloride, concentrations of up to 3 M are typically needed.

Although sodium sulfate is an excellent salting-out substance, issues with protein solubility may preclude its use at high amounts.

Working with ammonium sulfate at pH levels above 8.0 is not advised.

Answer T

Explanation:

Explanation:

The principle used in the preparation of these salts is to dissolve

the cystine in an alcoholic alkali solution to which just sufficient

water to effect solution has been added, and, after filtering from

excess cystine, to precipitate the salt by addition of a suitable

indifferent solvent. While various solvents, such as acetone,

ether, or large amounts of alcohol caused precipitations, these were

either oily or amorphous. Only acetonitrile was found to possess

the power of initiating regular crystallization in the salt solutions.

While the solutions of the different salts require different amounts

of the solvent for complete precipitation, a partial substitution of

absolute ether for acetonitrile was found expedient in the case

of the most soluble of the salts, the K salt.

Answer:

It is simply a process of forming crystal.

Explanation:            When salt is heated and dissolve in the liquid mainly water then its called saturated solution. When we further add salt and increase heat in order to dissolve it then it forcibly dissolve in liquid it's called supersaturated solution. After we slowly cool down the temperature then the salt we have put in supersaturated solution arises in the form of crystal. Hence its called crystalization.

(1) The element with an electron configuration of    1s22s22p63s23p64s23d6 is Iron (Fe).

The above electronic configuration is the repesentation of the electrons presents in different orbitals of the iron(Fe) .we have seen that all orbitals is completely filled before D orbital.

(2) The element with an electron configuration of 1s22s22p63s23p6 is Argon (Ar)

The above electronic configuration is the repesentation of the electrons presents in different orbitals of the Argon(Ar) .we have seen that all orbitals  is completely filled.

(3) The name of the element with a valence electron configuration of 4s1 is Potassium (K)

The above electronic configuration is the repesentation of the electrons presents in different orbitals of thePotassium (K) .we have seen that all orbitals  is completely filled before  4s1.

(4) The name of the element with a valence electron configuration of 2s22p5 is Flourine (F)

The above electronic configuration is the repesentation of the electrons presents in different orbitals of the Flourine (F) .we have seen that all orbitals  is completely filled before  2p5.

A. An element with the valence electron configuration 3s1 would form a monatomic ion with a charge of +1. In order to form this ion, the element will lose one electron from the 3s subshell.

B. An element with the valence electron configuration 3s23p3 would form a triatomic ion with a charge of -3. In order to form this ion, the element will gain three electrons from the 3s and 3p subshells.

Elements achieve an inert gas configuration by gaining or losing electrons to attain a full valence shell of electrons, resulting in a stable electron configuration. This is also known as having a complete octet in their outermost energy level.

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These acids can donate two protons (H⁺) in a solution, which makes them diprotic acids.

Option A and D are correct.

we first need to understand what a diprotic acid is. A diprotic acid is an acid that has two hydrogen ions (H+) that it can donate in an aqueous solution.

Now, let's look at the options given:

a) H₂SO4 is a diprotic acid because it has two hydrogen ions that it can donate in an aqueous solution.

b) H₂S is not a diprotic acid because it only has one hydrogen ion that it can donate in an aqueous solution.

c) HI is not a diprotic acid because it only has one hydrogen ion that it can donate in an aqueous solution.

d) H₂C₂O4 is a diprotic acid because it has two hydrogen ions that it can donate in an aqueous solution.


Let me know if you have any further questions or if you need me to provide a more detailed explanation.

The diprotic acids in the options provided are:

a) H₂SO₄ (sulfuric acid)
d) H₂C₂O₄ (oxalic acid)

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Diprotic acids are those that can donate two protons/hydrogen ions to a base, one at a time. The diprotic acids from the options provided are H₂SO4 (sulfuric acid) and H₂C₂O4 (oxalic acid). These both ionize in two distinct steps.

The term diprotic acid refers to an acid that contains two ionizable hydrogen atoms per molecule. The ionization of such acids occurs in two stages, with the first always taking place to a greater extent than the second.

From the given options, the diprotic acids are a) H₂SO4 (sulfuric acid) and d) H₂C₂O4 (oxalic acid). Given their structure, these can donate two protons/hydrogen ions to a base, one at a time. Sulfuric acid, for example, ionizes in two steps in an aqueous solution and the entire process comprises the essence of being a diprotic acid.

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Answer:yes

Explanation:depending on the chemical properties and amount of the chemical and the state of matter and amount of mass

Miso is a fermented Japanese condiment made primarily from rice, which is salted and fermented with ground soy for two months. The correct answer is (e)

Miso is a fermented Japanese condiment primarily made from ground soybeans and rice. The soybeans and rice are combined and fermented with the help of a specific mold called Aspergillus oryzae. This mold is responsible for the fermentation process that breaks down the proteins and carbohydrates in the soy and rice, leading to the development of the unique flavors and aromas of miso. Cabbage is not the primary ingredient in miso. Rice alone is not the main component. The bacteria mentioned, Bacillus, is not typically associated with miso fermentation. Hence The correct option is (e)

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Answer:

Set of conditions reflect STP is represented in (e) 273K, 760mmHg

Explanation:

STP (Standard Temperature and Pressure) is a set of standard conditions used for comparing and measuring gases. It provides a reference point for gas properties and allows for consistent comparisons between different experiments or measurements.

The specific conditions for STP are as follows:

Temperature: 273.15 K (0 degrees Celsius)

Pressure: 1 atmosphere (atm)

Let's evaluate each given option to determine which one reflects STP:

A. 298 K, 1 atm: The temperature is higher than the STP temperature of 273.15 K, so it does not match STP conditions.

B. 25 degrees Celsius, 14.7 psi: The temperature is 25 degrees Celsius, which is equivalent to 298 K and higher than the STP temperature. The pressure is given in psi (pounds per square inch), and 14.7 psi is not equal to 1 atmosphere. Therefore, this option does not reflect STP conditions.

C. 373 K, 760 torr: The temperature is higher than the STP temperature of 273.15 K, so it does not match STP conditions. Additionally, the pressure is given in torr, and 760 torr is not equal to 1 atmosphere.

D. 273 K, 1 Pa: The temperature is the same as the STP temperature of 273.15 K, which is a match. However, the pressure is given in pascals (Pa), and 1 Pa is significantly lower than 1 atmosphere.

E. 273 K, 760 mmHg: The temperature is the same as the STP temperature of 273.15 K, which matches STP conditions. The pressure is given in millimeters of mercury (mmHg), and 760 mmHg is approximately equal to 1 atmosphere.

Based on the evaluation, option E:

273 K, 760 mmHg, reflects the conditions of STP. The temperature matches the STP temperature, and the pressure is approximately equal to 1 atmosphere.

Therefore, option E represents the conditions of STP.

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Answer:

Phosphorus pentasulfide.

Explanation:

Answer:

c

Explanation:

beacause Câu 1: Trình bày phương pháp hóa học nhận biết

Answer:

Because it is the hottest zone

Answer:

the non luminous flames are very hot. little light is produced by non luminous flames.

1) Chemical formula

2) Mg Lewis structure

3) O2 Lewis structure

4) MgO Lewis structure

5) Chemical formula written as Lewis dot structure

.

Answer:

2C2H6(g)+7O2(g)→4CO2(g)+6H2O(l)

Explanation:

When ethane is burned in presence of oxygen, it produces carbon dioxide (CO_2)(CO2) and water (H_2O)(H2O) .

According to law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of reactants must be equal to the mass of products.

In order to get the same mass on both sides, the number of atoms of each element on product side must be same as the number of atoms of each element on reactant side.Thus the equations are balanced.

2C_2H_6(g)+7O2(g)\rightarrow 4CO_2(g)+6H_2O(l)2C2H6(g)+7O2(g)→4CO2(g)+6H2O(l)

The structure of the 4-ethyl-2-methyl-3-propyl heptanoic acid is shown in the image attached

The arrangement and connectivity of the atoms within a molecule are referred to as the structure of an organic substance. Along with other elements including oxygen, nitrogen, sulfur, and halogens, organic molecules are largely made of carbon atoms bound to hydrogen atoms.

It is crucial to remember that organic compounds can exist in several isomeric forms, where the same chemical formula leads to various structural configurations. The connection of atoms or the spatial arrangement of atoms in three-dimensional space might vary between isomers.

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Gas pressure can be described as the force exerted per unit area by gas molecules as they collide with the surface of a container. It is a measure of the average kinetic energy of the gas molecules.

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Answer:

increases

Explanation:

When an atom of phosphorus becomes a phosphide ion (P3–), the radius increases because 3 more electrons are added, and they placed on higher sublevels.

Prediction 1 best shows what the population could look like after many generations. Because, the long beak traits is having more life time.

Each characteristics in a living thing is created by a respective genetic coding in its body. The genetic code which is responsible for a particular behavior or appearance is called a genetic trait.

Here, the prediction 1 is best . It already saying that long-beak hummingbirds are more likely to survive, that baby survived long enough to pass on its mutation, so the long-beak trait became more common over generations.

Prediction 2 says abut a  genetic trait which is less fit to survive. Hence, cannot affect the next generation population. Therefore, prediction 1 is best.

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Your question is incomplete. But your complete question probably was:

Prediction 1 :Two hummingbirds with short or medium beaks had a baby with a mutation in its genes for the long-beak trait.

Prediction 2 is best. A hummingbird could have been born with a mutation in its genes for the long-beak trait and lived for a little while.

Considering the definition of speed, it takes 1 hour to travel a distance of 44 misle.

Speed can be defined as the amount of space traveled per unit of time with which a body moves. That is, speed ​​is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it.

The speed can be calculated using the expression:

speed= distance traveled÷ time

In this case, you know that:

Replacing in the definition of speed:

44 miles per hour= 44 miles÷ time

Solving:

44 miles per hour× time= 44 miles

time= 44 miles÷ 44 miles per hour

time= 1 h

In summary, it takes 1 hour to travel a distance of 44 miles.

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Particle size is typically measured in units such as micrometers (µm) or nanometers (nm), which represent very small lengths on the order of thousandths or millionths of a meter, respectively.

4.2 cm is much larger than the typical size of particles and is more in the range of everyday objects.

For example, 4.2 cm is roughly the size of a golf ball or a small tomato. If you have additional information about the particle's size, such as its shape or the material it is made of, I may be able to provide more specific guidance.

Also, a particle that is 4.2 nanometers (nm) in size falls in the range of nanoscale particles, which are typically much smaller than everyday objects and are invisible to the nakεd eye.

The size of the particle can provide some clues about its potential identity or classification, but additional information about its properties, composition, and context is needed to determine its specific identity.

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The minimum value of the partition coefficient (k) to get an efficient extraction with only one extraction step is 1.8.

To answer your question, we need to understand the concept of partition coefficient (k). Partition coefficient (k) is the ratio of the concentration of a solute in the organic phase to its concentration in the aqueous phase at equilibrium. It is a measure of the solubility of a solute in a particular solvent system.
Now, to get an efficient extraction with only one extraction step, we need to ensure that more than 90% of the desired compound is recovered. Given that the desired compound is soluble in the organic solvent and we use equal volumes of the organic solvent and water, the minimum value of the partition coefficient (k) can be calculated using the following formula:
k = [concentration of the desired compound in the organic phase] / [concentration of the desired compound in the aqueous phase]
To achieve an efficient extraction with only one extraction step, we need to ensure that more than 90% of the desired compound is extracted into the organic phase. This means that the concentration of the desired compound in the organic phase should be at least 90% of the initial concentration of the compound. Assuming equal volumes of the organic solvent and water are used, this can be represented as:
[concentration of the desired compound in the organic phase] >= 0.9 x [initial concentration of the desired compound]
Similarly, the concentration of the desired compound in the aqueous phase can be represented as:
[concentration of the desired compound in the aqueous phase] = [initial concentration of the desired compound] / 2
Substituting these values in the formula for k, we get:
k >= (0.9 x [initial concentration of the desired compound]) / ([initial concentration of the desired compound] / 2
Simplifying the expression, we get:
k >= 1.8
In summary, for an efficient extraction with only one extraction step, we need to ensure that the desired compound is soluble in the organic solvent and the partition coefficient (k) is equal to or greater than 1.8.

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Answer: B) You are to continue heating the round-bottom flask until all liquid has been distilled.

Explanation:

Fractional distillation refers to a method that's useful for the separation of mixtures of solvents whereby there is less than 40°C in the boiling point difference.

With regards to the options given, the incorrect statement about the procedure for distillation is that you are to continue heating the round-bottom flask until all liquid has been distilled. This isn't correct.

90% of 100.2 g, or 90.18 g, of calcium nitride was produced.

A chemical reaction is a process that changes one group of chemical constituents into another. As reactants are transformed into products, chemical bonds between atoms are formed and broken. Typically, this is an exothermic process that releases energy as heat or light.

Calcium nitride, also known as \(Ca_3N_2\), is created by the interaction of calcium and nitrogen gas. The mass of calcium nitride that is produced when 56.6 g of calcium and 30.5 g of nitrogen gas are combined can be calculated using stoichiometry.

The reaction's balanced equation is as follows: \(3C_a+N_2- > Ca_3N_2\)

Therefore, 3 moles of nitrogen are needed for every 1 mole of calcium. The following equation can be used to determine the moles of calcium

and nitrogen:

Moles of \(C_a\) = 56.6 g / 40 g/mol = 1.415 mol

Moles of \(N_2\) = 30.5 g / 28 g/mol = 1.089 mol

Since nitrogen is the limiting reagent and calcium and nitrogen have a mole ratio of 1.089:1.415, the following formula can be used to get the potential calcium nitride yield:

Theoretical yield = 1.089 mol × 92 g/mol = 100.2 g

The actual yield of calcium nitride is 90% of the theoretical yield because the reaction has a 90% yield. Therefore, 90% of 100.2 g, or 90.18 g, of calcium nitride was produced.

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The radius of the football would be 748299320 times bigger than that of one atom of fluorine.

The atomic radius of a fluorine atom is 147 picometers or 147 x \(10^{-12}\) m.

The radius ratio of a football with 11 cm radius and that of one atom of fluorine can be calculated as:

                           11 x \(10^{-2}\)/147 x \(10^{-12}\)

                                    = 748299320

Thus, the radius of the football would be 748299320 times bigger than that of one atom of fluorine.

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Answer:

B2 French I hope I'm right

Answer:

English

Explanation:

I mean u typing in English lol