714.0g of KBr will decompose fully to produce how many liters of Bromine gas?
2KBr (s) → 2K (s) + Brz (g)

Answer:

Atomic Mass of Nitrogen is 14.01

Explanation:

I = 435 A (to three significant digits). To calculate the size of the electric current, we need to use Faraday's constant, which relates the amount of charge transferred to the number of moles of electrons involved in the reaction.

One mole of electrons represents a charge of 96,485 C (coulombs), which is equal to Faraday's constant (F).
Therefore, the amount of charge transferred in this case is:
0.540 mol x F = 52,126 C
Since the time is given in minutes, we need to convert it to seconds:
t = 2 minutes x 60 seconds/minute = 120 seconds
Finally, the electric current (I) is given by:
I = Q/t = 52,126 C / 120 s = 435 A
The unit symbol for electric current is "A" (ampere).
We need to round the answer to the correct number of significant digits, which is three, because the original value 0.540 has three significant digits.
Therefore, the final answer is:
I = 435 A (to three significant digits).

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a. 1, 1, 1

N+H--------NH

Dalton's atomic theory can account for the fact that different samples of the same compound always contain a fixed mass percentage of its component elements in the following way:

According to Dalton's atomic theory, atoms are indivisible and cannot be created or destroyed. All atoms of a given element are identical in mass and other properties.

Atoms combine in small whole-number ratios to form compounds. This means that every molecule of a given compound contains the same number of atoms of each element. This principle is known as the law of definite proportions. When a compound is formed by the combination of atoms of two or more elements, the ratio of the masses of these elements in the compound is always the same. The ratio of the masses of the constituent elements is fixed and constant in any given compound. This is the reason why different samples of the same compound always contain a fixed mass percentage of its component elements.

Dalton's atomic theory provides an explanation for the observation that different samples of the same compound always contain a fixed mass percentage of its component elements. According to Dalton's theory, atoms are indivisible and cannot be created or destroyed. All atoms of a given element are identical in mass and other properties. When atoms of two or more elements combine to form a compound, they do so in small whole-number ratios. This means that every molecule of a given compound contains the same number of atoms of each element.The law of definite proportions is a fundamental principle of Dalton's atomic theory. It states that when a compound is formed by the combination of atoms of two or more elements, the ratio of the masses of these elements in the compound is always the same.

This principle is also known as the law of constant composition. It applies to all compounds, regardless of how they were formed or where they are found. The ratio of the masses of the constituent elements is fixed and constant in any given compound. This is the reason why different samples of the same compound always contain a fixed mass percentage of its component elements.

Dalton's atomic theory accounts for the fact that different samples of the same compound always contain a fixed mass percentage of its component elements by stating that atoms of different elements combine in small whole-number ratios to form compounds, and that the ratio of the masses of the constituent elements in a compound is always the same. This principle is known as the law of definite proportions and is a fundamental principle of Dalton's atomic theory.

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Answer: penlalalalaooooaaaaaaaaaaa

Explanation: pen

24

N2=22.4 liters

18g=22.4 litters

18÷.75=24

The electron transport chain starts with NADH energy electrons and ends with FADH2-energy electrons.

Electrons are present outside of the atom's nucleus, in contrast to protons and neutrons, that are contained within the core at its center. Negative electrons are drawn to the positively charged nucleus so because electric charges of opposite polarity attract one another.

As an example, neutrons both have positive charges but electrons have a negative charge. In a test, it was found that each atom's negative charge was of the same magnitude as each proton's positive charge.

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The volume (V₂) of the container at the new altitude is 0.717 Hg. It can be calculated by operating the ideal gas law.

Given information,

V₁ = 250 mL = 0.25L

P₁ = 30.07 Hg

P₂ = 9.96 Hg

T₂ = 3.7 °C

The equation of the ideal gas law is:

(P₁ * V₁) / (T₁) = (P₂ * V₂) / (T₂)

The initial and final temperatures in Kelvin:

T₁ = 273.15 + 3.7 = 276.85 K

T₂ = 273.15 - 9.96 °C = 263.19 K

Now,

(30.07  * 0.25) / (276.85 ) = (9.96  * V₂) / (263.19 )

V₂ = (30.07  * 0.25  * 263.19 ) / (9.96  * 276.85)

V₂ = 0.717 Hg

Therefore, the volume at the new altitude is 0.717 Hg.

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Answer:

Test the operation of the product

Explanation:

The hollow sphere has the higher rotational kinetic energy.

A hollow sphere is a ball that has been hollowed out so that an internal ball within the external ball is created by a wall of similar thickness.

In comparison to solid ones, hollow spheres are 40 to 70 percent lighter. An air current is used to lift and hold polystyrene balls over a fluidized bed as a suspension made of metal powder and a binder is sprayed onto them to begin the process.

I(hollow sphere) = 2/3 mr squared

I(solid sphere) = 2/5 mr squared

KE(r) = 1/2 I w squared

I(h) > I(s)

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The molar mass of the unknown non-electrolyte liquid is given as

256 g/mol, option A.

The ratio between the mass and the amount of substance (measured in moles) of any sample of a chemical compound is known as the molar mass (M) in chemistry. The molar mass of a material is a bulk attribute rather than a molecular one.

ΔTemp.f = i x Kf x b

where,

ΔTemp.f = the freezing-point depression;

i = the Van't Hoff factor

Kf = the cryoscopic constant of the solvent;

b = the molality of the solution.

                   = 1.32/(1*1.86)

                   = 0.71 mol/kg

            0.71 mol/kg * 1kg/1000g

             = 0.00071 mol/g.

              Number of moles = mass * molality

              = 0.00071 * 110

              = 0.078 mol.

          Molar mass (g/mol) = mass/number of moles

          Mass of solute (liquid) = 20g

          Molar mass = 20/0.078

          = 256.2 g/mol. ≈ 256 g/mol

Therefore, molar mass of the unknown liquid is 256.2 g/mol.

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Complete question:

A solution containing 20.0 g of an unknown non-electrolyte liquid and 110.0 g water has a freezing point of -1.32 °c. given kf = 1.86°c/m for water, the molar mass of the unknown liquid is ____g/mol.

A)256B) 69.0 C) 619 D) 78.1

The molar mass of the unknown liquid is 256.5 g/mol.To solve this problem, we can use the formula for calculating the freezing point depression: ΔTf = Kf·m·i

where ΔTf is the change in freezing point (in °C), Kf is the freezing point depression constant (in °C/m), m is the molality of the solution (in mol/kg), and i is the van't Hoff factor (which is 1 for non-electrolytes).

First, we need to calculate the molality of the solution:

molality = moles of solute / mass of solvent (in kg)

We know that the mass of the solvent (water) is 110.0 g, which is 0.1100 kg. To find the moles of solute (the unknown liquid), we need to divide its mass (20.0 g) by its molar mass (which we don't know yet). Let's call the molar mass "M":

moles of solute = 20.0 g / M

So, the molality is:

molality = (20.0 g / M) / 0.1100 kg
molality = (20.0 / M) / 0.1100 mol/kg

Now, we can plug this into the formula for freezing point depression:

ΔTf = Kf·m·i
-1.32 = 1.86·[(20.0 / M) / 0.1100]·1

Simplifying this equation, we get:

-1.32 = 1.86·(181.8 / M)
-1.32 = 338.628 / M
M = 338.628 / 1.32
M = 256.5 g/mol

Therefore, the molar mass of the unknown liquid is 256.5 g/mol.

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Answer:

The answer is Bicarbonate ions.

Answer:

C. Carbonic base

Explanation:

EDG2021

The Bohr model is a representation of the electronic configuration of the atom. According to this model, each energy level can hold a certain number of electrons. In the first energy there can only be 2 electrons, in the second and the following energy levels there can be a maximum of 8 electrons.

Sodium, Na which has 11 electrons in total so in the first level it will have two electrons, in the second level it will have 8 electrons and in the third level it will have the missing electron.

In the model proposed by the student, the electrons are represented in blue. The model proposed by the student is incorrect.

We see that in the second energy level he drew 9 electrons, this is incorrect since from the second energy level there can only be 8 electrons, the remaining electron must be located in the third energy level.

I need help with it too

Answer:

chemical

Creatine Phosphate (with oxygen) So all muscle cells contain a high-energy compound called creatine phosphate which is broken down to make more ATP quickly. Creatine phosphate can supply the energy needs of a working muscle at a very high rate, but only for about 8–10 seconds.adenosine triphosphate (ATP)

The source of energy that is used to power the movement of contraction in working muscles is adenosine triphosphate (ATP) – the body's biochemical way to store and transport energy. However, ATP is not stored to a great extent in cells

Answer:

A) mL / s

Explanation:

Yes, the sea is considered a buffer.

A buffer is a solution that resists pH changes when acids or bases are added. The buffering capacity of the ocean allows it to maintain a relatively stable pH even when acids and bases are added.

The ocean's buffering capacity is primarily due to the presence of dissolved compounds such as bicarbonate (HCO3-) and carbonate (CO32-). These compounds act as both weak acids and bases, accepting and releasing hydrogen ions (H+) to maintain pH balance. When carbon dioxide (CO2) in the atmosphere dissolves in seawater, carbonic acid (H2CO3) is produced and decomposed into bicarbonate ions and hydrogen ions.

This transformation helps prevent a rapid drop in pH as excess hydrogen ions combine with carbonate ions to form bicarbonate ions, which can reduce overall acidity.

When alkali such as hydroxide ions (OH-) is added to the ocean, excess hydroxide ions combine with hydrogen ions to form water molecules, reducing alkalinity.

The presence of these dissolved compounds and their interconversion reactions stabilize the pH of the ocean, making it less susceptible to rapid changes in acidity or alkalinity. This buffering capacity is essential for the survival and maintenance of marine life, as many organisms are sensitive to changes in pH.

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The element that is reduced in the reaction C + H₂SO₄ → CO₂ + SO₂ + H₂O is sulfur.

In the given chemical equation, the reactants are carbon (C) and sulfuric acid (H₂SO₄) while the products are carbon dioxide (CO₂), sulfur dioxide (SO₂), and water (H₂O). The oxidation state of sulfur in H₂SO₄ is +6 while the oxidation state of sulfur in SO₂ is +4, indicating that sulfur has undergone reduction in the reaction.

Initially, the oxidation state of carbon in C is 0, and the oxidation state of sulfur in H₂SO₄ is +6. In the products, carbon is oxidized to +4 in CO₂, while sulfur is reduced to +4 in SO₂. Thus, sulfur is the element that has undergone reduction in the given reaction.

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You would need approximately 0.09 liters (or 90 mL) of the concentrated hydrochloric acid solution to prepare 2.75 liters of 0.400 M HCl upon dilution with water.

To determine the amount of concentrated hydrochloric acid solution needed to prepare a desired dilution, we can use the concept of molarity and the equation:

M1V1 = M2V2

where M1 and V1 represent the initial molarity and volume, and M2 and V2 represent the desired molarity and volume.

Given:

M1 (initial molarity) = 37.0% HCl by mass

V1 (initial volume) = ? (unknown)

M2 (desired molarity) = 0.400 M HCl

V2 (desired volume) = 2.75 L

First, let's calculate the initial molarity (M1) using the given concentration of 37.0% HCl by mass.

Since the density is given as 1.20 g/mL, we can convert it to grams per liter (g/L):

Density = 1.20 g/mL = 1.20 g/mL x 1000 mL/L = 1200 g/L

Now, we can calculate the initial molarity (M1) using the mass of HCl and the density:

Mass of HCl = 37.0% x 1200 g/L = 0.37 x 1200 g/L = 444 g/L

Molarity (M1) = moles of solute / volume of solution in liters

The molar mass of HCl is approximately 36.5 g/mol. Therefore, the moles of HCl in the concentrated solution can be calculated as follows:

Moles of HCl = mass of HCl / molar mass of HCl = 444 g / 36.5 g/mol ≈ 12.16 mol

Now, we can use the equation M1V1 = M2V2 to find V1, the volume of concentrated solution needed:

M1V1 = M2V2

V1 = (M2V2) / M1

= (0.400 M x 2.75 L) / (12.16 mol/L)

≈ 0.09 L

Therefore, you would need approximately 0.09 liters (or 90 mL) of the concentrated hydrochloric acid solution to prepare 2.75 liters of 0.400 M HCl upon dilution with water.

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Answer:

they are only efficient in certain areas

Explanation:

Wind turbine are efficient only in certain areas it is a problem with using wind turbines to produce energy.

Wind turbine convert the wind energy into the electricity. It is a power generating device that converts the kinetic energy in to electrical energy.

Now lets check all option one by one:

Option (A): Wind turbines are efficient only in certain areas it is a problem with using wind turbines to produce energy because the flow of air from areas of high pressure towards the lower pressure.

So, it is correct option.

Option (B): Wind turbines occupy a lot of space to work.

So, it is incorrect option.

Option (C): Wind turbines produce a large amount of energy is not a problem.

So, it is incorrect option.

Option (D): Wind turbines does not create a pollution or it does not pollute the air or water.

So, it is incorrect option.

Thus, we can say that Wind turbines are efficient only in certain areas it is a problem with using wind turbines to produce energy because the flow of air from areas of high pressure towards the lower pressure.

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a. The magnitude of electric field is found to be E = 5.14 x 10¹¹ N/C ,

b. The direction of the electric field that the electron produces at the location of the nucleus is radial

c. the magnitude of the magnetic field is 2.63 x 10⁻⁷ T

a. To find the magnitude of the electric field that the electron produces at the location of the nucleus, we can use Coulomb's law, which states that the electric force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them. In this case, the electron has a charge of -1.6 x 10⁻¹⁹ C, and the nucleus has a charge of +1.6 x 10⁻¹⁹ C (since the hydrogen atom is neutral, the nucleus must have a positive charge). The distance between the electron and the nucleus is the radius of the electron's orbit, which is 5.3 x 10⁻¹¹ m.

Therefore, the magnitude of the electric field is:

E = (k * q₁ * q₂) / r²

E = (9 x 10⁹ N m²/C²) * (1.6 x 10⁻¹⁹ C) * (-1.6 x 10⁻¹⁹C) / (5.3 x 10⁻¹¹ m)²

E = 5.14 x 10¹¹ N/C

where k is Coulomb's constant.

b. The direction of the electric field that the electron produces at the location of the nucleus is radial, pointing directly from the electron toward the nucleus. This is because the electric force between two point charges always points along the line connecting them, and in this case, the electron and the nucleus are both point charges. Therefore, the electric field points inward, toward the nucleus.

c. The magnetic field produced by the electron is given by the formula:

B = (μ0/4π) * (q * v * sinθ) / r²

where μ0 is the permeability of free space (4π x 10⁻⁷ T m/A), q is the charge of the electron, v is its speed, θ is the angle between the velocity vector and the line connecting the electron and the nucleus, and r is the distance between them. Since the electron is moving in a circular orbit, its velocity vector is perpendicular to the line connecting it to the nucleus, so θ is 90 degrees and sinθ is 1. Therefore, the magnitude of the magnetic field is:

B = (μ0/4π) * (q * v) / r²

B = (4π x 10⁻⁷ T m/A) * (-1.6 x 10⁻¹⁹ C) * (2.2 x 10⁶ m/s) / (5.3 x 10⁻¹¹ m)²

B = 2.63 x 10⁻⁷ T

where T is the unit of magnetic field called the Tesla.

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Answer:

9.15 atm

Explanation:

Ideal gas equation of state PV=nRT

P in hPa, V in L, n in mol, R is a constant which is 83.1 hpa*L/mol*k, T in kelvin.

Plug in all the number, and we will get:

P*6.21=2.02*83.1*343

P =9271.6(in hpa)=9.15 atm

Answer:

I don't know what you mean by that I just wanted to ask you this: who do u support? Biden or Trump?

Explanation:

Thank you if you answered my question!

There will be produced 0.250 moles of \(N_{2}\) and 1 mol of \(H_{2} O\)

\(H_{2} O_{2}\) is the limiting reactant

There will remain 0.450 moles of \(N_{2} H_{4}\)

Number of moles of \(N_{2} H_{4}\) = 0.7 moles

Number of moles \(H_{2} O_{2}\) = 0.500 moles

Molar mass of \(N_{2} H_{4}\) = 32.05 g/mol

Molar mass of \(H_{2} O_{2}\) = 34.01 g/mol

Step 2: The balanced equation

\(N_{2} H_{4}\) + 2\(H_{2} O_{2}\) → \(N_{2}\) + 4\(H_{2} O\)

Step 3: Calculate the limiting reactant

For 1 mol of \(N_{2} H_{4}\) we need 2 moles of \(H_{2} O_{2}\) to produce 1 mol of \(N_{2}\) and 4 moles of \(H_{2} O\)

\(H_{2} O_{2}\) is the limiting reactant. It will completely be consumed. (0.500 moles).

\(N_{2} H_{4}\) is in excess. There will react 0.500/2 = 0.250 moles of \(N_{2} H_{4}\)

There will remain 0.700 - 0.250 moles = 0.450 moles of \(N_{2} H_{4}\)

Step 4: Calculate moles of products

For 1 mol of \(N_{2} H_{4}\) we need 2 moles of \(H_{2} O_{2}\)  to produce 1 mol of \(N_{2}\) and 4 moles of \(H_{2} O\)

For 0.500 moles of \(H_{2} O_{2}\). we'll have 0.250 moles of \(N_{2}\) and 1 mol of \(H_{2} O\)

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The complete nuclear fusion of each reaction: 2 1 H (hydrogen) + 2 1 H (hydrogen) → 4 2 He (helium) + 1 0 n (neutron) + D (deuterium) + E (energy)

238 92 U (uranium)

Nuclear fusion is a process by which atomic nuclei combine to form a heavier nucleus, releasing a large amount of energy in the process. In nuclear fusion reactions, lighter elements combine to form heavier ones, resulting in the release of energy. One example of a nuclear fusion reaction is the fusion of two hydrogen atoms, which results in the formation of helium, a neutron, and the release of energy in the form of deuterium and energy (D and E). Another example is the fusion of uranium, which can result in the formation of thorium, helium, and the release of energy in the form of fissile and energy (F and G). These reactions play a crucial role in powering the stars, including our sun, and hold great promise as a clean and virtually limitless energy source for the future.

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Answer:

D: 3

E: 2

F: 234

G: 90

Explanation:

You have to get what is on the right to add up to the left in that row.

Also right on edge 2023

Answer:

The nuclear force (or nucleon–nucleon interaction or residual strong force) is a force that acts between the protons and neutrons of atoms. Neutrons and protons, both nucleons, are affected by the nuclear force almost identically. Since protons have charge +1 e, they experience an electric force that tends to push them apart, but at short range the attractive nuclear force is strong enough to overcome the electromagnetic force. The nuclear force binds nucleons into atomic nuclei.

Explanation:

Answer:

5.46x\(10^{8}\)

Explanation:

just move the decimal however many places to the left until there is only one digit to the left of it and then square the ten by that number

The first radioiodine isotopes to be used to treat thyrotoxicosis were iodine-130 and iodine-131 in 1941, and thyroid cancer was added to their list of uses in 1943.

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