arrange these atoms according to decreasing effective nuclear charge experienced by their valence electrons: s, mg, al, si

Answer: The equilibrium constant for the reaction is 54.47

Explanation:

The equilibrium constant is defined as the ratio of the concentration of products to the concentration of reactants raised to the power of the stoichiometric coefficient of each. It is represented by the term \(K_{eq}\)

The given chemical equation follows:

\(H_2+I_2\rightleftharpoons 2HI\)

The expression for equilibrium constant will be:

\(K_{eq}=\frac{[HI]^2}{[H_2][I_2]}\)

We are given:

\([HI]_{eq}=1.3544\times 10^{-2}M\)

\([H_2]_{eq}=4.5647\times 10^{-3}M\)

\([I_2]_{eq}=7.378\times 10^{-4}M\)

Putting values in above expression, we get:

\(K_{eq}=\frac{(1.3544\times 10^{-2})^2}{(4.5647\times 10^{-3})(7.378\times 10^{-4})}\\\\K_{eq}=54.47\)

Hence, the equilibrium constant for the reaction is 54.47

The electronegativitie of the period-3 element are lited on the tranparency.. Si and Cl  is 0.7, . Mg and S is 1.3,  Si and S is 1.7, Al and P is 1.6.

The electronegativity of the atoms that make up the bond determines whether it is nonpolar or polar covalent. An atom's propensity to draw electrons (or electron density) in its direction is measured by its electronegativity. It controls how the shared electrons between the two atoms in a bond are distributed. The more an atom's electronegativity, the more strongly the electrons in its bonds are drawn to it. In a polar covalent bond, electrons are pushed in the direction of the more electronegative atom; as a result, the atom with the partial negative charge is the more electronegative atom. The electron distribution becomes increasingly polarised and the atoms' partial charges increase with increasing electronegativity differences.

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Answer: If one mole of carbon monoxide has a mass of 28.01 g and one mole of carbon dioxide has a mass of 44.01 g , it follows that the reaction produces 44.01 g of carbon dioxide for every 28.01 g of carbon monoxide.

Explanation: (May Be Unrelated?)

Answer:

Leaves have a large surface area so more light hits them. The upper epidermis of the leaf is transparent, allowing light to enter the leaf. The palisade cells contain many chloroplasts which allow light to be converted into energy by the leaf

Answer:

The main function of a leaf is to produce food for the plant by photosynthesis. Chlorophyll, the substance that gives plants their characteristic green colour, absorbs light energy. The internal structure of the leaf is protected by the leaf epidermis, which is continuous with the stem epidermis.

Explanation:

Answer:

2.5 gallon fuel produced 21.5 kg  CO₂.

Explanation:

Given data:

CO₂ produced during burning of one gallon fuel = 8.6 kg

CO₂ produced during burning of 2.5 gallon fuel = ?

Solution:

This problem is solved through simple multiplication.

If one gallon fuel produced 8.6 kg CO₂ then 2.5 gallon produced is determined by multiplying the 2.5 with 8.6 kg.

1 gallon = 8.6 kg CO₂

2.5 ×  8.6 kg CO₂  = 21.5 kg

Thus 2.5 gallon fuel produced 21.5 kg  CO₂ .

The concept Law of mass action is introduced by the scientists Guldberg and Waage. Here the rate of reaction is proportional to the product of concentration of the reactants. The correct option is D.

At constant temperature, the rate or velocity of a chemical reaction is directly proportional to the product of the molar concentrations of the reactants present at the given time.

Consider the reaction, A + B → Products

Then by law of mass action,

Rate of reaction, r = k [A] [B]

Here  [A] and [B] are concentration of the reactants and 'k' is the rate constant.

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Your question is incomplete, but most probably your full question was:

What is the Law of Mass Action for equilibrium reactions?

A. reactants products

B. products/reactants

C. reactants/products

D.  Product of Reactants

The frequency of a red laser that has a wavelength of 676 nm would be 4.43 x \(10^{14\) hertz.

The frequency and wavelength of a wave are related by the following equation:

λf = c

Where λ is the wavelength of the wave in meters, f is the frequency in Hertz, and c is the speed of light in a vacuum.

in this case, λ = 676 nm = 6.76 x \(10^{-7\) m

c = 299,792,458 m/s

Making f the subject of the formula:

f = c/λ

  = 299,792,458/6.76 x \(10^{-7\)

  = 4.43 x \(10^{14\) hertz

In other words, the frequency of a red laser that has a wavelength of 676 nm would be 4.43 x \(10^{14\) hertz.

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Explanation:

Refer to pic...........

Answer:

2.7 mL

Explanation:

The equation of the reaction is;

2AlBr3 + 3Cl2 -----> 2AlCl3 + 3Br2

Number of moles in 2.12 x 1022 formula units of aluminum bromide

1 mole of AlBr3 = 6.02 * 10^23 formula units

x moles = 2.12 x 1022 formula units

x = 2.12 x 1022 formula units  * 1 mole/ 6.02 * 10^23 formula units

x = 0.0352 moles of AlBr3

According to the reaction equation;

2 moles of AlBr3 produces 3 moles of Br2

0.0352 moles of AlBr3 produces 0.0352 moles  *  3 moles /2 moles

= 0.0528 moles of Br2

Mass of Br2 produced = 0.0528 moles of Br2 * 159.808 g/mol

Mass of Br2 produced = 8.44g

But density = mass/volume

volume = mass/density

volume of Br2 = 8.44 g/ 3.12 g/mL

volume of Br2 =  2.7 mL

The oil that provides the most monounsaturated fatty acids is olive oil. Monounsaturated fatty acids are a type of healthy fat that can help lower cholesterol levels and reduce the risk of heart disease. Olive oil is particularly rich in these fatty acids, making it a great choice for cooking and dressing salads.

While fish oil, coconut oil, flaxseed oil, and corn oil all contain some monounsaturated fatty acids, they are not as high in this type of fat as olive oil. Fish oil is a good source of omega-3 fatty acids, while coconut oil is high in saturated fat. Flaxseed oil is a good source of both omega-3 and omega-6 fatty acids, and corn oil is a good source of polyunsaturated fatty acids.

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The mass percent of a vinegar solution with a total mass of 96.37 g that contains 3.85 g of acetic acid is 3.99%

The solution composition is often described in mass percentage. It shows the mass of solute present during a given mass of solution. The number of solutes is expressed in mass or by moles.

Mass percentage = ( mass of the component / total mass ) × 100

The Mass per cent formula is expressed as solving for the molar mass also for the mass of each element in 1 mole of the compound.

Given,

Total mass = 96.37g

Mass of acetic acid = 3.85g

Mass percentage = ( mass of acetic acid / total mass ) × 100

= ( 3.85 / 96.37) × 100

= 3.99 %

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Answer:

A.

Explanation:

Potential energy. Potential energy is energy that is stored.

In order to determine the pH in the given scenarios, several calculations and considerations need to be taken into account.Firstly, the Henderson-Hasselbalch equation can be used, which relates the pH of a solution to the pKa of the acid and the ratio of its conjugate base to the acid. This equation is pH = pKa + log([A-]/[HA]), where [A-] is the concentration of the conjugate base and [HA] is the concentration of the acid.

The first problem asks for the pH of a solution made by mixing 0.20 mol of acid HA with 0.30 mol of its conjugate base NaA. The pH can be calculated using the Henderson-Hasselbalch equation, pH = pKa + log([A-]/[HA]). Given that the pKa is 6, we can plug in the values and solve for the pH.

The second problem asks for the pH after adding 0.05 mol of NaOH to the previous solution. Since NaOH is a strong base, it will react with the acid HA and form water.

The amount of NaOH added is small compared to the amount of acid, so we can assume that the acid will be fully neutralized. We can calculate the resulting concentration of the acid and its conjugate base and use the Henderson-Hasselbalch equation to find the new pH.

The third problem involves mixing 200 mL of 0.20 M HA with 300 mL of 0.30 M NaA. We need to calculate the concentrations of the acid and its conjugate base after mixing, and then use the Henderson-Hasselbalch equation to find the pH.

The fourth problem asks for the pH after adding 10 mL of 0.50 M HCl to the previous solution. Since HCl is a strong acid, it will completely dissociate and increase the concentration of the acid HA.

We need to calculate the new concentrations of the acid and its conjugate base and use the Henderson-Hasselbalch equation to find the new pH.

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Answer:

For gene therapy, stem cells can be trained in a lab to become cells that can help fight disease. Liposomes. These fatty particles have the ability to carry the new, therapeutic genes to the target cells and pass the genes into your cells' DNA.

Mark me as brainlest please!

Answer:

A) increases

Explanation:

Answer:

During cytokinesis, which is a physical process of cell division, the cells divide the cytoplasm of a parent cell into two daughter cells. The ring on the outside of the cell which is also known as a contractile ring, shrinks at the equator of the cell which causes pinching, and the plasma membrane goes inward. After all that happens there’s something called a cleavage furrow which is the formation of a dip between the two cells while they are splitting.

(You can sum it up, but I hope this helps!)

Atoms are the basic building blocks of matter. They are composed of protons, neutrons, and electrons.  The name of the component of an atom that spins around it is the electron.

The component of an atom that spins around it is called an electron. Electrons are negatively charged particles that are constantly moving around the nucleus of an atom in specific energy levels or orbitals. In conclusion, the name of the component of an atom that spins around it is an electron. Understanding the behavior and movement of electrons is essential in understanding the properties and reactions of atoms and molecules.

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Answer:

To make sure all the sulphuric acid has been used up

The statement that correctly explains which trial has a higher concentration of the reactant is:

In a chemical reaction, the rate of consumption of reactants and the rate of formation of products are related. If Trial 2 has a higher rate of product formation per unit time compared to Trial 1, it indicates that the reactant is being consumed at a faster rate in Trial 2.

The concentration of a reactant decreases as the reaction proceeds, and a higher rate of product formation suggests a higher rate of reactant consumption. This implies that Trial 2, with a higher rate of product formation per unit time, has a higher concentration of the reactant.

The final amount of product formed or the duration of the reaction does not directly determine the concentration of the reactant. The concentration is more closely related to the rate at which the product is formed. Option C is correct.

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The temperature will be 1200 K when the pressure increases to 400 kPa and the volume remains constant.

We can use the combined gas law to solve this problem:

(P1 x V1) / T1 = (P2 x V2) / T2

where P1, V1, and T1 are the initial pressure, volume, and temperature, and P2 and T2 are the final pressure and temperature.

In this case, the initial conditions are:

P1 = 100 kPa

V1 = 3.0 L

T1 = 300 K

The final pressure is:

P2 = 400 kPa

Since the volume remains constant, V2 = V1 = 3.0 L.

We can solve for T2:

(P1 x V1) / T1 = (P2 x V2) / T2

(100 kPa x 3.0 L) / 300 K = (400 kPa x 3.0 L) / T2

T2 = (400 kPa x 3.0 L x 300 K) / (100 kPa x 3.0 L)

T2 = 1200 K

Therefore, the temperature will be 1200 K when the pressure increases to 400 kPa and the volume remains constant.

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Answer:

I wanna say c

Explanation:

It makes the most sense, because non-metals don't produce an electrical current, and therefore aren't conductors.

The 2s and 2p sublevels are very close in energy, as are the 3s and 3p sublevels. The s sublevel is located lower on the page than the p sublevel.

Chemical bonds within substances contain energy. Exothermic reactions are those that release heat as well as chemical energy during the course of a reaction. The quantum theory defines a sublevel as an energy level. Sublevels in chemistry describe electron-related energies. Sublevels in physics can also refer to nuclear energy levels. A single orbital that can accommodate up to two electrons makes up the s-sublevel. Spherical best describes it. Since it is smaller than the 2s, which is smaller than the 3s, and so on, the 1s is the particle closest to the nucleus. 3 identical orbitals that resemble  make up the p-sublevel.

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The enthalpy change of the reaction in terms of kJ/mol KOH is -11.902 kJ/mol  KOH.

To calculate the enthalpy change of the reaction in terms of kJ/mol KOH, we need to first determine the amount of KOH that reacted with the HCl. Using the given concentration and volume of HCl, we can calculate the number of moles of HCl:

1.5 mol/L * 0.100 L = 0.150 mol HCl

Since KOH and HCl react in a 1:1 molar ratio, the amount of KOH used in the reaction is also 0.150 mol.

Next, we need to calculate the heat released or absorbed by the reaction using the formula q = mCΔT, where q is the heat absorbed or released, m is the mass of the solution, C is the specific heat of the solution, and ΔT is the change in temperature.

The mass of the solution can be calculated using the density:

mass = volume * density = 100 mL * 1.00 g/mL = 100 g

Thus, q = 100 g * 4.185 J/g*K * (34.5°C - 30°C) = 1785.3 J

Finally, we can use the formula ΔH = -q/n, where n is the number of moles of KOH, to calculate the enthalpy change of the reaction:

ΔH = -1785.3 J / 0.150 mol = -11902 J/mol

Converting to kJ/mol:

ΔH = -11.902 kJ/mol

Therefore, the enthalpy change of the reaction in terms of kJ/mol KOH is -11.902 kJ/mol.

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Answer:

your answer is (The fluid that passes through filter paper during filtration)

‘Chromatography’ is an analytical technique commonly used for separating a mixture of chemical substances into its individual components, so that the individual components can be thoroughly analyzed. There are many types of chromatography e.g., liquid chromatography, gas chromatography, ion-exchange chromatography, affinity chromatography, but all of these employ the same basic principles.

Chromatography is a separation technique that every organic chemist and biochemist is familiar with. I, myself, being an organic chemist, have routinely carried out chromatographic separations of a variety of mixture of compounds in the lab. In fact, I was leafing through my research slides and came across a pictorial representation of an actual chromatographic separation that I had carried out in the lab. I guess that picture would be a good starting point for this tutorial!

Let me first explain what I was trying to do here. I had two reactants ‘A’ and ‘B’. I let them react with each other, under certain reaction conditions, to form a product ‘C’. After the reaction was complete, I ended up with a reaction mixture that contained unreacted A, unreacted B and my desired product C. Now my task was to separate out A, B and C to isolate and analyze pure product C.

Answer:

See Explanation

Explanation:

Renewable energy sources refers to those energy sources that can never be depleted. This means that they can be used severally without getting exhausted. Solar, biomass, wind and hydroelectric power are all renewable energy sources.

Hence, from the perspective described above, we can say that wind is a form of solar energy because wind is formed when the air is heated by the sun.

Hydroelectric power is driven by the water cycle. This water cycle somehow depends on the sun to run efficiently. So, hydroelectric power can also be considered to be a form of  solar energy.

The formula for the compound that forms between lithium and each polyatomic ion is \(Li_{2}CO_{3}\), \(Li_{3}PO_{4}\), \(Li_{2} HPO_{4}\) and \(CH_{3}COOLi\).

A substance made up of two or more different chemical elements together in a certain ratio is known as a compound in chemistry. When the elements interact with one another, chemical bonds are formed that are difficult to break.

Only a few of the elements on the periodic table have a second letter that is lowercase after their initial capital letter. Therefore, you can tell an ion is polyatomic if it contains two capital letters together.

So, from the question

The compound that lithium will form with carbonate is \(Li_{2}CO_{3}\)

The compound that lithium will form with phosphate is \(Li_{3}PO_{4}\)

The compound that lithium will form with hydrogen phosphate is \(Li_{2} HPO_{4}\)

The compound that lithium will form with acetate is \(CH_{3}COOLi\)

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Answer:

MnBr₂

Explanation:

Answer:

b - 385 j

Explanation:

Answer:

Moving them farther apart

Explanation:

One can try to change the distance between the two positive charges in such a way that it increases the distance and decreased the electric force.

Answer:

moving them farther apart

Explanation:

aka B.