which of the following statements is most likely to be true in the case of the feedback-regulated enzymatic pathway shown? view available hint(s)for part a which of the following statements is most likely to be true in the case of the feedback-regulated enzymatic pathway shown? p0 binds e4 and activates it. p2 binds e2 and activates it. p4 binds e1 and deactivates it. p3 binds e2 and activates it p4 binds e3 and deactivates it.

12.0 grams od n2 & 15.0 gram of ar are present in a gas mixture with a pressure head of 1.32 atm. 0.704 atm is the pressure drop of n2.

Another of the fundamental observable characteristics of the this phase of matter, pressure (P) is understood to be the force of all gas particulate interactions divided by the size of the wall.

Pressure has a major impact on every aspect of our life, from of the weather to flying. It is particularly crucial during chemical reactions. Chemists can compel chemical reactions to happen and hasten the transitions among solids, fluids, or gases by adjusting pressure.

N=12.0, Ar=15.0

Total pressure=1.32

Partial pressure= n2

WN₂=12.0

WAr =15.0

nN₂=12/28 =0.42

nAr=15/40 =0.37

Xn₂=0.42/0.42+0.37 =0.53

Pn=Xn2×Ptotal

=0.53×1.32=0.69atm that ie nearly equal to 0.7atm.

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The major organic product will be 3, 4 di-methyl pentane.

Chemical processes involving organic molecules are known as organic reactions. The fundamental kinds of organic chemistry reactions include redox reactions, oxidative degradation, pericyclic reactions, elimination processes, as well as substitution reactions.

In the given reaction the starting material is a 5 carbon chain where carbon 2 has a hydroxy substituent and carbon 3 has two methyl substituents. The alcohol is heated to 170 degrees C in 85 percent H3PO4 to form the product. The final product will be 3, 4 di-methyl pentane.

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By using the Ka values for given weak acids, the best component to prepare the buffer solution for pH 1.9 is H₃PO₄, pH 5.0 is CH₃COOH and for pH 3.9 is HCOOH.

Buffer solution is the solution which is prepared by the mixture of a weak acid and its strong base or vice versa. Its pH is calculated using Henderson-Hasselbalch formula which is

pH=pKa+log([base]/[acid])

Buffer solutions are working well within the range of pKa±1. Find out pKa value using the formula

pKa=-logka

For H₃PO₄

pKa=-log(7.5×10⁻³)

pKa=2.12

For CH₃COOH

pKa=(1.8×10⁻⁵)

pKa=4.74

For HCOOH

pKa=-log(1.8×10⁻⁴)

pKa=3.74

If we check the range of each solution, then for phosphoric acid(H₃PO₄) it will be in between 1.12-3.12. For acetic acid(CH₃COOH), it is in between 3.74-5.74 and for formic acid(HCOOH), it is in between 2.74-4.74.

Therefore, the best component to preapre the buffer solution for pH 1.9 is H₃PO₄, pH 5.0 is CH₃COOH and for pH 3.9 is HCOOH.

Your question is incomplete but the complete question would be that

Use the Ka values for weak acids to identify the best components for preparing buffer solutions with the given pH values. name formula ka phosphoric acid H3PO₄ CH3COOH 7.5 x 10⁻³ 1.8 x 10⁻⁵ acetic acid formic acid HCOOH 1.8 x 10⁻⁴ pH=1.9, pH=5.0, pH=3.9

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The carbon-to-hydrogen mass ratio possible for another compound composed only of carbon and hydrogen is 2.80; option D.

Hydrocarbons are compounds that are composed of only carbon and hydrogen alone.

Hydrocarbons are usually obtained naturally from petroleum.

The common hydrocarbons are:

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Glyphosphate, lindane, 2,4-d, chlordane are the organic compound that have chlorine in common.

What is Organic compound is  that organic compound are group of chemical substance that have the  carbon and hydrogen atoms in which the bonds are covalently linked together.SOCs are organic (carbon-based) compounds created by humans. They serve as defoliants, fuel additives, insecticides, and building blocks for other organic compounds. Atrazine, 2,4-D, dioxin, and polychlorinated biphenyls are a few of the most well-known SOCs (PCBs).

Therefore the  Glyphosphate, lindane, 2,4-d, chlordane are the  organic compound that have chlorine in common and these chemicals are  also use as herbicides that is to kill weeds, or to kill insects or pests because of  the chlorine present inside it.

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Cobalt will form strongest metallic bond among lithium, magnesium, silver, copper and iron.

The bond with the highest attraction between the particles is the strongest bond. The main factors that can influence the potency of the metal to metal attraction. First, the bond becomes stronger the more valence electrons a metal has. The additional electrons will strengthen the overall forces that attract the positive ions. The quantity of unpaired electrons affects how strong a metallic connection is. The bond strength increases with the amount of unpaired electrons. Cobalt exhibits greater bonding as a result of having the most unpaired electrons.

Hence, cobalt form strongest metallic due maximum unpaired electrons

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The key to lowering overall tax liability should be to reduce the percentage of your total salary that is subject to taxation.

Your income tax is calculated depending on your annual revenue, and for many of us, the simplest method to minimize that amount is to contribute to an independent contractor retirement plan or perhaps an individually maintained conventional IRA.

The new legislation also increased the age at which seniors must begin taking required minimum distributions (RMDs) from their 401(k) and traditional IRA accounts. Previously, RMDs had to be taken at the age of 712. That age was raised to 72 years with the passage of the SECURE Act. Depending on a person's tax bracket when they begin withdrawing funds, the transition to accepting distributions may have an impact on taxes.

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Answer:

A Red Giant

Explanation:

When the inward gravitational forces are less than the outward radiation pressure forces, the star swells and cools, thus turning red. High mass stars become red supergiants, low mass stars become red giants. The forces become unbalanced when the hydrogen begins to run out.

Brainliest Please?

A strong acid is one that entirely ionizes in aqueous solution. When dissolved in water, it always loses a proton (H+). Acid that only partially ionizes in a solution is considered weak acid.

Only a small number of its (H+) atoms are released when it dissolves in water and it also can be explained by Conductivity .

An electrolyte solution's conductivity is a gauge of how well it conducts electricity. In the SI, conductivity is measured in Siemens per meter.

Conductivity is a helpful indicator of water quality in general. Every body of water has a typical conductivity range that, once determined, can be used as a reference point for comparison with routine conductivity tests.

While electrical conductance is a characteristic of a specific electrical component, electrical conductivity is a quality of the substance itself (such as silver) (like a particular wire). The amount of voltage needed to for a given amount of electric current to flow is known as electrical conductivity.

An acid that partially separates into its ions in water or an aqueous solution is referred to as a weak acid. On the other hand, in water, a strong acid completely dissociates into its ions. While the conjugate acid of a weak base is also a weak acid, the conjugate base of a weak acid is also a weak base.

The ability of acidic and basic solutions to conduct electricity is referred to as strong and weak. Strong electrical conductivity indicates that an acid or base is a strong acid or base. A weak acid or base is one that conducts electricity only slightly.

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30 ml volume of water have to add to 15. 0 ml of 12 m hcl to make it to 6. 0 m solution.

How do you calculate the volume of a solution needed?

Given data

So first we set up the dilution equation: M1*V1=M2*V2

M: Molarity

V: Volume

We can set these equal in a dilution equation because Molarity is Miles per Volume, and by multiplying it by Volume we get Moles on each side. Moles of solute remain equal throughout a dilution since you are just adding water.

Next, we plug in our knowns:

(12.00M HCl)(15.00ml)=(6.00M HCl)(V2)

V2 = 15 X 12 / 6 = 30ML

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This saturated naoh solution has a molarity of 13.92 M.

Moles of solute per liter of solution is known as molarity (M, or mol/L). We simply need to convert grams of NaOH to moles of NaOH in this instance because it has a molar mass of 39.997 g/mol:

We are given the following details:

557 g is the solute mass (sodium hydroxide).

Molar mass of sodium hydroxide is 39.99 g/mol.

Solution volume = 1 L

The equation's output is as follows when we enter values:

molarity = number of moles of solute/volume of solution in litres

               = 557 g NaOH/1 L solution * 1 mol NaOH/39.997 g NaOH

               = 13.92 mol NaOH/1 L solution = 13.92 M NaOH;

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An ionic connection is created by lithium and oxygen. Each lithium atom contains one valence electron since it belongs to group 1A. This is lithium's Lewis valence electron structure.

Valence electrons are the electrons located in the atom's outermost shell, or energy level. One such example is oxygen, which has six valence electrons, two of which are located in the 2s subshell whereas four of which are located in the 2p subshell. An expression for oxygen's valence electron configuration is 2s22p4.

The electrons that make up an atom's shell are known as valence electrons. Due to the fact that when two atoms engage, their outermost electrons make contact with one another first but are the ones that control how an atom will respond in a chemical reaction.

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Hydrocarbons are molecules consisting of both hydrogen and carbon reacts with oxygen in a combustion Reaction.

A combustion reaction occurs when oxygen gas (O2) reacts with certain types of compounds. We often call the other compound fuel. A more familiar term for combustion reactions is burning. The most common products of combustion reactions are carbon dioxide and water. Combustion is a high-temperature exothermic (heat releasing) redox (oxygen adding) chemical reaction between a fuel and an oxidant, usually atmospheric oxygen, that produces oxidized, often gaseous products, in a mixture termed as smoke. When a fuel is burned, oxygen in the combustion air chemically combines with the hydrogen and carbon in the fuel to form water and carbon dioxide, releasing heat in the process. Hydrocarbons reacts with oxygen as it has both hydrogen and carbon.

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Smart investors are looking for more reliable assets to avoid losing wealth in today's market, which has unpredictable stock market conditions.

Even if our economy may have been improving, recent developments have had a significant impact on the market. History has shown how crucial assets that can withstand a depression are. When it comes to learning how to preserve wealth during a depression, the Great Depression ranks among history's greatest teachers.

During a market crash or depression, the two most crucial assets to have on hand are gold and cash.

During depressions, stocks and mutual funds are regarded as a significant bet. While safer assets are Treasury bonds, banknotes, and notes. The American government issuing these products. Once they reach maturity, they offer the buyer a fixed rate of interest.

Foreign bonds were once widely advocated as a depression-resistant investment option by numerous experts. This is not always a safe bet, as recent events have demonstrated. Due to the impact on the economies of all nations caused by global pandemics and other market instabilities, this has lost its appeal as a wise investment.

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If 1-bromoadamantane was solvolyzed in 30% ethanol as opposed to 40% ethanol, the process would be slower.

A renewable fuel called ethanol is produced form corn or other plant components. The United States uses ethanol extensively, and far more than 98% of fuel contains some ethanol. E10, which contains 10% ethanol and 90% gasoline, is the most popular ethanol blend.

Over 2 billion people use ethanol (also known as ethyl alcohol) day after day. Yeast, sugars, mixed starches are fermented to create this kind of alcohol. People have been using ethanol-based beverages like beer and wine for generations to alter their mood.

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From the Lewis structures of the compound, the formal charge is -1 and rests on the nitrogen atom.

We know that the formal charge has to do with the charge that the specie appears to have. We have to look at the structure and consider the number of the electron pairs on each of the elements in the compound and then this would help us to be able to decide the formal charge that would be on each structure.

Hence, upon a careful consideration of the structures we can see that the formal charge that can be found on each of the structures for the hydrogen cyanide is -1 and we are now faced with deciding the atom that should carry this formal charge.

Given that the nitrogen atom is more electronegative than the carbon atom then the negative charge ought to rest on the nitrogen rather than on the carbon atom.

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Common ionic compounds containing ions  always soluble in water is Alkali metals (Group 1).
Alkali metals are the six chemical elements in a group called Group 1(a) which are in the far left column of the periodic table.  The following are the six alkali metal elements, their properties and uses.
The Elements and Groups of Alkali Metals
The six elements that are included in the alkali metals are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).  If you look at the periodic table, there is one more element at the top, namely hydrogen (H).  However, hydrogen does not belong to the alkali metals as it is a gaseous element.  All the elements in this group have one electron in their valence shell, or a single valence electron.
The most common alkali metal is sodium.  The amount is 2.8 percent.  The easiest type of sodium to find is sodium chloride or what we know as salt (NaCl).  Then the second most easily found element is potassium with an amount of 2.6 percent throughout the earth.  On the other hand, the rarest are rubidium, lithium and cesium.  Each only amounted to 0.01 percent, 0.002 percent and 0.0007 percent.  Meanwhile, francium is radioactive and only exists in nature for a short time.

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Evaporation is a type of vaporization of a liquid that occurs from the surface of liquid into gaseous phase that is not saturated with the evaporating substance.

On the surface of a liquid as it transitions into the gas phase, evaporation is a type of vaporisation that takes place. When the rate of evaporation of water is affected by humidity, for example, a high concentration of the evaporating substance in the surrounding gas significantly slows down evaporation.

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The theoretical yield of the product was found to be 0.215g.

define theoretical yield ?

The theoretical yield of a chemical reaction is the amount of product received from the full conversion of the limiting reactant. It is the quantity of product produced by a perfect (theoretical) chemical reaction, which is not the same as the amount produced by a laboratory reaction. Theoretical yield is often stated in grammes or moles.

Unlike theoretical yield, real yield is the amount of product generated by a reaction. Actual yield is often lower since few chemical reactions operate with 100% efficiency due to loss retrieving the product and other processes that diminish the product. Sometimes the actual yield exceeds the theoretical yield.

Perhaps as a result of a subsequent reaction that produces more product, or because the recovered product contains contaminants.

The ratio of actual yield to theoretical yield is commonly expressed as a percentage yield.

The theoretical yield of the product was found to be 0.215g.

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Ionic Compounds have high boiling point compare to covalent bon due to presence of electrostatic force.

Ionic bonds, also known as electrovalent bonds, are created in chemical compounds when ions with different charges attract one another electrostatically. When the valence (outermost) electrons of one atom are permanently transferred to another atom, a bond of this sort is created. If an atom receives electrons, it generates a negatively charged ion (cation), and if it loses electrons, it forms a positively charged ion (cation) (anion).

The best examples of this sort of chemical are those created when alkali and alkaline-earth metals are combined with nonmetals. Ionic bonding results in the formation of electrovalent or ionic molecules. The electrostatic forces of attraction between opposing charges and repulsion between similar charges are what keep the ions in these specific types of ionic crystalline solids aligned.

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Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, bromine is less reactive than fluorine because it is easier for fluorine to gain an electron.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

Electronegativity is the property of an element to gain shared pair of electron. On going down the group of periodic table, electronegativity decreases. The reason for decreasing electronegativity is the increase in the size of the element. Since bromine is larger in size than fluorine, so bromine is less electronegative than fluorine. Bromine is less electronegative than fluorine.

Therefore, bromine is less reactive than fluorine because it is easier for fluorine to gain an electron.

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Gauche interactions are only possible between two substituents when their dihedral angle is equal to or less than 600.

Your provided image is somewhat not sufficient to hold two items in a bin, hence I am gonna use another image of the same question with white background to make sure you read it precisely!

Please also note that 'Y' on C-1 can have gauche interactions with substituents on C-2 & C-6 only, remaining all will just either axial or equatorial only!

Cyclohexene is a hydrocarbon with the chemical formula C6H10. This cycloalkene is a colorless liquid with a pointy scent. It's miles an intermediate in various industrial procedures. Cyclohexene isn't always very solid upon long-time garage with exposure to light and air because it forms peroxides.

Cyclohexane is an alicyclic hydrocarbon comprising a ring of six carbon atoms; the cyclic shape of hexane is used as a raw cloth within the manufacture of nylon.

Cyclohexene is used in a numerous variety of chemical syntheses. It's miles a building block that is utilized in Pharma, (eg, Clidanac, MK 346, Trandolapril, and Agchems which includes Propargite.

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The option(C) is correct, 55.9 g

What is mass?

The amount of matter in a substance or an object is quantified by its mass. Smaller masses can be measured in grammes, but the kilogramme (kg) is the standard SI unit for mass (g). You would use a balance to determine the mass.

What is gram?

The gramme (formerly gramme; SI unit sign g) is a unit of mass in the International System of Units (SI) equal to one thousandth of a kilogramme.

1.33moles=mass of NaF41.99g/molmass of NaF=1.33moles41.99g/molmass of NaF=55.85g.

Therefore, option(C) is correct, 55.9 g.

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State variables are used to characterize matter in bulk. Volume V, compression p, mass M, particle density, thermal energy Eth, and temperature T are some of these variables.

Matter is everything that occupies space and appears to have mass; in the other words, matter seems to be the "stuff" which the cosmos is made of. The basic constituents of all stuff are called elements. They don't change into other elements through normal chemical processes and have distinct chemical and physical properties.

A substance that has a certain mass and volume over space and is commonly referred to as matter. Pencils, toothbrushes, water, and other items are examples of matters.

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The longest-lasting foods can be kept using corn starch.

In particular, focus and patience are crucial. There is hardly any water at all in cornstarch. That is to say, it indicates that there is nowhere for mold or bacteria, which are the main causes of damaged food, to flourish. So, go ahead and utilize the cornstarch you have on hand.

Anyway, I have to remind you once more: Just because cornstarch has an endless shelf life storage doesn't mean you should store it in your cupboard with the lid off. Cornstarch and people both can become ill as a result of rain. It can "get sick" or even "die" if it is exposed to humid environments.

Therefore, secure storage is an excellent defense!

Consider using several cornstarch alternatives if you see any signs of deterioration in your cornstarch.

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14 gram of nitrogen contains 0.5 mol of nitrogen.

We know that the no of mol= [tex]\frac{given mass}{molar mass}[/tex]  , and nitrogen contains 2 N atom thus molar mass is 28. So no of mol is [tex]\frac{14}{28}[/tex] =0.5.

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The pressure of a pure gas is referred to as the dry gas pressure when gases are being collected over water.

what is dry gas pressure?

It can be challenging to determine the mass of gases because of their low densities. It is usual practise to collect gas over water in order to measure the height of displaced water. To do this, insert a tube into an upside-down bottle whose opening is submerged in a bigger container of water. Dalton's Law must be applied to take water vapor into account when estimating the volume of gas that was collected.

The height of the water displaced in the tube can be used to calculate the overall pressure inside the pneumatic trough device, which is used to collect a gas over water.

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The silicon chip has [tex]1.22 * 10^{20}[/tex] silicon atoms.

The silicon chip used in an integrated circuit of a microcomputer weighs 5.68mg.

When weight is converted into grams, it gives [tex]5.68 * 10^{-3}[/tex]

To find the number of silicon atoms required, the weight must be divided with atomic weight as shown

[tex]5.68 * 10^{-3} / 28[/tex]

The obtained value must be multiplied with [tex]N_{A}[/tex] value which is [tex]6.023 * 10^{23}[/tex]

This gives  as the numbers of silicon atoms present in the chip [tex]1.22 * 10^{20}[/tex]

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The percentages of carbon and hydrogen 84.37%  and 15.693% respectively.

The mass of a certain chemical element or chemical compound (g) divided by the amount of material is known as the molar mass (mol). By multiplying the standard atomic masses (in g/mol) of the component atoms, one may get the molar mass of a compound.

Molar mass of the compound is the mass of 1 mole of compound which is the sum of masses of each element.

[tex]C_9H_{20.[/tex]

Mass of 1 mole of compound= mass of carbon + mass of hydrogen+ = 9(12) + 20(1)= 128 g.

Percentage by mass of carbon = [tex]\frac{mass \ of \ the \ carbon}{mass \ of \ the\ molecule }[/tex]%

= 108/128 * 100

= 84.37 %

Percentage by mass of carbon = [tex]\frac{mass \ of \ the \ H}{mass \ of \ the\ molecule }[/tex] %

=20/128 *100 =15.63 %

The percentages of carbon and hydrogen 84.37%  and 15.693% respectively.

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