If a reaction vessel initially contains an N2O4N2O4 concentration of 0.0550 MM at 500 KK, what are the equilibrium concentrations of N2O4N2O4 and NO2NO2 at 500 KK?Express your answers in moles per liter to three significant figures separated by a comma

Answer:

759779.6 torr

Explanation:

Initial volume, V₁ = 4001 mL

Final volume, V₂ = 3002 mL

Initial pressure, P₁ = 750.1 atm

We need to find the final pressure at a constant temperature. Let it be P₂. \(P_1V_1=P_2V_2\\\\P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{750.1\times 4001 }{3002 }\\\\P_2=999.71\ atm\)

We know that,

1 atm = 760 torr

So,

999.71 atm = 759779.6 torr

Hence, there will be 759779.6 torr pressure.

Answer:

See attached.

Explanation:

The distance and the displacement are the measurements of the object that traveled. The distance traveled by the rolling car is 5 m and the displacement is 5 m downwards.

Distance has been the area covered by the object from the initial to the final point it has no directions. It estimates the points from where the object moved to reach the destination. The distance traveled is calculated as:

Distance = 20 m  - 15 m

D = 5 m

The displacement is the overall movement and change in the position of the object irrespective of the area covered. It is a vector quantity and is measured as:

D = Δx

D = X₂ - X₁

D = 20 m - 15 m

D = 5 m downwards

Therefore, the displacement of the car is 5 meters downwards and the distance is 5 meters.

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Answer:

Using the periodic table the number of electrons is determined as;

Fluorine (F) has 5 electrons in 2p orbital.

Silicon (Si) has 2 electrons in 3p orbital.

Iron (Fe) has 6 electrons in 3d orbital.

Krypton (Kr) has 6 electrons in 4p orbital.

The number of electrons in each orbital or the electronic configuration can be determined by the Aufbau principle, along with other principles such as the Pauli exclusion principle and Hund's rule.

1. The atomic number of Fluorine is 9, which means it has 9 electrons. In the ground state, 2 electrons are in the 1s orbital, 2 electrons are in the 2s orbital, and 5 electrons are in the 2p orbital. Therefore, the number of 2p electrons in F is 5.

2. The atomic number of Silicon is 14, which means it has 14 electrons. In the ground state, 2 electrons are in the 1s orbital, 2 electrons are in the 2s orbital, 6 electrons are in the 2p orbital, and 2 electrons are in the 3s orbital. Therefore, the number of 3p electrons in Si is 2.

3. The atomic number of Iron is 26, which means it has 26 electrons. In the ground state, 2 electrons are in the 1s orbital, 2 electrons are in the 2s orbital, 6 electrons are in the 2p orbital, 2 electrons are in the 3s orbital, and 6 electrons are in the 3p orbital. Therefore, the number of 3d electrons in Fe is 6.

4. The atomic number of Krypton is 36, which means it has 36 electrons. In the ground state, 2 electrons are in the 1s orbital, 2 electrons are in the 2s orbital, 6 electrons are in the 2p orbital, 2 electrons are in the 3s orbital, 6 electrons are in the 3p orbital, 10 electrons are in the 3d orbital, and 2 electrons are in the 4s orbital. Therefore, the number of 4p electrons in Kr is 6.

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The three collagen chains are twisted around each other to form a triple helix structure. This triple helix is also known as a tropocollagen molecule, which is the basic building block of collagen fibers.

The three chains, also known as alpha chains, are held together by hydrogen bonds and hydrophobic interactions. The triple helix structure provides collagen with its unique properties such as strength, flexibility, and resistance to deformation.

The arrangement of the chains also allows for the formation of cross-links between tropocollagen molecules, which gives collagen fibers even greater strength and stability.

The triple helix structure is essential to the function of collagen in the body, as it allows for the formation of strong connective tissues like tendons, cartilage, and bone. Any disruption to the triple helix can lead to collagen disorders, which can have significant effects on health and well-being.

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The correct answer is 0.292 M.

Molarity or molar concentration is the number of moles of solute per liter of solution or molarity can be defined to be as number of moles of solute in volume of solution.

Mass of Gold(III) hydroxide = 1.1868 g

Moles of gold(III) hydroxide = mass of Au(OH)₃ / Molar mass of Au(OH)₃

Moles of Gold(III) = 1.1868/247.98 = 0. 004 moles

Moles of hydroxide ion from  Au(OH)₃ will be,

Au(OH)₃ ⇔ Au³⁺ + OH⁻

Here,

if 1 mole of  Au(OH)₃ gives 3 moles of OH⁻ ion then,

0.006 moles of  Au(OH)₃ will give,

 = 3 x 0.006 moles of OH⁻ ions

 = 0.018 moles of OH⁻ ions

Again,

NaOH ⇔Na⁺ + OH⁻

Since, [OH⁻] = [NaOH] = 1.76 x 10⁻¹ = 0.176 M = molarity.

Hence, the moles of OH⁻ = Molarity of OH⁻ x VH of OH⁻

                                      = 0.176 M x 0.154L

                                      = 0.0271 moles

Now, total moles of OH⁻ will be

= OH⁻ from  Au(OH)₃ + OH⁻ from NaOH

= (0.018 + 0.0271) moles

= 0.0451 moles of OH⁻

To find the concentration of hydroxide ion, we need to just apply the formula of molarity:

[OH⁻] = moles of OH⁻ / Volume of the solution

         = 0.0451 / 0.154

         = 0.292 M

Therefore, the the total concentration of hydroxide ion, in molarity is 0.292 M.

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Answer:

B

Explanation:

25 gigaseconds is equal to 2,500,000,000,000 centiseconds

The gas which have highest average kinetic energy per mole at 298K is b)CO₂.So,correct option is b.

The kinetic energy of gases is a straightforward, generally critical traditional model of the thermodynamic way of behaving of gases, with which numerous foremost ideas of thermodynamics were laid out. The model depicts a gas as an enormous number of indistinguishable submicroscopic particles (iotas or atoms), which are all in consistent, fast, irregular movement. Their size is thought to be a lot more modest than the typical distance between the particles. The particles go through irregular flexible impacts among themselves and with the encasing walls of the compartment. The fundamental rendition of the model depicts the best gas, and thinks about no different communications between the particles.

The kinetic energy of gases makes sense of the perceptible properties of gases, like volume, pressure, and temperature, as well as transport properties like consistency, warm conductivity and mass diffusivity. Because of the time reversibility of minute elements (minuscule reversibility), the motor hypothesis is likewise associated with the guideline of nitty gritty equilibrium, concerning the variance dissemination hypothesis (for Brownian movement) and the Onsager proportional relations.

We know that average kinetic energy is given by the formula =(1/2) mv²

Since temperature is same for all gases, so speed will remain same.

Now,molecular mass will be deciding factor.So,gas which have high molecular mass will have more average kinetic energy.

Molecular mass of O₂=32g

Molecular mass of CO₂=44g

Molecular mass of H₂O(g)=18g

Molecular mass of H₂O(l)=18g

Hence,option b is correct.

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Answer:

I THINK IS A CARROT

Explanation:

Answer:

Its either 2 or 3 Im pretty sure its 2 though!  I hope you Get it right!

Let me know if its wrong!

Explanation:

In Chemistry, we always have to balance the equations, in many topics within the subject of Chemistry, it is required to do that, this is because we have to account for every atom in the reaction, on both sides, reactant and product, the same number of atoms that are on the reactants side must be on the products side. Therefore, the best answer for this question will be letter D

The correct option is c) Atomic number.

Transmutation is the conversion of one chemical element or isotope into another. The quantity that must change for a transmutation is atomic number. Transmutation can be described as the conversion of one chemical element into another. It can also be described as a change in the atomic nucleus that results in the conversion of one element into another. In order for a transmutation to occur, the number of protons in the nucleus of the atom must change. This means that the atomic number must change. The atomic number is the number of protons in the nucleus of an atom. If the number of protons changes, then the element itself will change. For example, the transmutation of uranium into lead is a well-known example of this process. Uranium has an atomic number of 92, while lead has an atomic number of 82. In order for this transmutation to occur, the number of protons in the nucleus of the atom must change from 92 to 82.

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Answer:

atmospheric circulation

Explanation:

Atmospheric circulation occurs  because the Sun heats the Earth more at the equator than at the poles.

Warm air is known to rise at the tropics which lies closer to the equator and moves towards the poles. Atmospheric circulation is driven by the rotation of the earth.

The air cools and flows back towards the Equator to be warmed up again. A sort of convection current is thereby set up.

Answer:

40.2g of the 20 karat gold must be mixed with pure gold to obtain the 22 karat gold

Explanation:

The purity of a 22 karats gold is:

22/24 * 100 = 91.6% of purity

From a gold that is:

20/24 * 100 = 83.3% of purity

We can write:

80g = X + Y (1)

Where X is the mass of the 20-karat gold and Y the mass of pure gold

And in therms of purity:

91.6*80 = 83.3X + 100Y (2)

Replacing (1) in (2):

7328 = 83.3X + 100(80-X)

7328 = 83.3X -100X + 8000

-672 = -16.7X

X =

Answer:

The 5R's are Reuse, Reduce, Recycle, Repair and Recover.

The pH of lemon juice is 2. 2. the ph of orange juice is 4. 2. the concentration of hydrogen ions in lemon juice is  l0^-2.2 and 10^-4.2 the concentration of hydrogen ions in orange juice.

A metric for determining how basic or acidic a substance as well as solution is. The pH scale ranges from 0 to 14. A pH value of 7 was considered neutral on just this scale, meaning it was neither acidic or basic. It becomes more acidic if the pH value is below 7, and much more basic if the pH value is well above 7.

Calculation of pH :

pH can be calculated by using the formula:

[H +]= 10^-pH]....(i)

[H+] = l0^-2.2 (For lemon juice)

[H +]= 10^-pH

[H +]= 10^-4.2 (orange juice)

Although pH may appear to be an element according to a periodic chart, it is essentially a unit or measurement. Potential Hydrogen, but rather pH, is an acronym that indicates how so much hydrogen being present in liquids and also how active each hydrogen ion becomes.

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Answer:

D

Explanation:

it seems the most logical

Answer:

B

Explanation:

6.00 ml

PLEASE MARK AS BRAINLIEST

Answer:

210 grams

Explanation:

just add them all up

There are 9 milliosmoles of calcium chloride in a 10 mL syringe of 10% calcium chloride solution.

First, we need to determine the weight of calcium chloride in the 10 mL syringe:

Weight of CaCl2 = Volume (mL) × Concentration (%)

Weight of CaCl2 = 10 mL × 10% = 1 gram

Next, we calculate the number of moles of calcium chloride:

Number of moles = Weight (g) / Molecular weight (g/mol)

The molecular weight of calcium chloride (CaCl2) is calculated as follows:

Molecular weight = (Atomic weight of Ca) + 2 × (Atomic weight of Cl)

                             = (40 g/mol) + 2 × (35.5 g/mol) = 111 g/mol

Number of moles = 1 g / 111 g/mol ≈ 0.009 mol

Lastly, we convert moles to milliosmoles:

Number of mOsm = Number of moles × 1,000

Number of mOsm = 0.009 mol × 1,000 ≈ 9 mOsm

Therefore, there are approximately 9 milliosmoles of calcium chloride in a 10 mL syringe of 10% calcium chloride solution.

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Textbooks that have a greater gravitational pull are 4kg textbooks and the distance of objects that have a greater gravitational pull is 2cm.

Newton's law of gravity is Newton's conclusion that the gravitational attraction acting between two objects is proportional to the mass of each object and inversely proportional to the square of the distance between the two objects. So, a 4kg textbook will have a greater gravitational pull than a 2kg textbook.

The strength of the earth's gravitational force on objects is affected by the distance of the object from the center of the earth. The farther an object is from the center of the earth, the smaller its gravitational force.

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Answer:

Acylation can be used to prevent rearrangement reactions that would normally occur in alkylation.

Answer:

An ionic bond is a chemical bonding involving the attraction between oppositely charged ions

Explanation:

On the periodic table, elements from group 1 and 7 are attracted to each other and when they bond, it's called ionic bonding. This is because of their valence electrons and ions.

Answer:

Ionic bonding is a type of chemical bonding that involves the electrostatic attraction between oppositely charged ions, and is the primary interaction occurring in ionic compounds. It is one of the main types of bonding along with covalent bonding.

1. Fill the balloon with water, then weigh it. The volume is then: Volume (cm^3) = Weight(gm)/1(gm/cm^3), (neglecting the weight of the empty balloon.)

There are total three laws of newtons, first law of newtons, second law of newton and third law of newton. Therefore, for every action there is an equal and opposite reaction.

Newton's first law is also called law of inertia. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

Third law of newton states  that for every action there is an equal and opposite reaction.

Therefore, for every action there is an equal and opposite reaction.

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The [Co(OH2)4(OH)2]+ complex has four unpaired electrons, which makes it paramagnetic (option 3). Therefore, the correct answer is 3 i.e 4. To determine the number of unpaired electrons in the complex [Co(OH2)4(OH)2]+, we need to first determine the electronic configuration of the complex ion.

The central cobalt atom has a +3 oxidation state, which means it has lost three electrons. The atomic configuration of Co is 1s2 2s2 2p6 3s2 3p6 3d7 4s2. In the complex, the four water molecules (OH2) and two hydroxide ions (OH) are ligands, which donate electron pairs to the central metal atom.

The electronic configuration of the complex ion can be determined using crystal field theory, which predicts that the d-orbitals of the metal are split into two sets of energy levels in the presence of ligands. The d-orbitals that are closest to the ligands have higher energy and are referred to as the "eg" set, while the d-orbitals that are farther away from the ligands have lower energy and are referred to as the "t2g" set.

In an octahedral complex like [Co(OH2)4(OH)2]+, the d-orbitals split into two sets of three orbitals each: the eg set (dx2-y2 and dz2) and the t2g set (dxy, dxz, and dyz). The electrons in the t2g set are lower in energy than those in the eg set, and so the electrons will first fill up the t2g orbitals before occupying the eg orbitals.

The four water molecules (OH2) are neutral ligands and donate electron pairs to the cobalt atom via coordination bonds. Therefore, the electrons from the t2g orbitals will pair up with the electrons from the water molecules to form four coordination bonds. The two hydroxide ions (OH) are anionic ligands and also donate electrons to the cobalt atom. The remaining electrons in the d-orbitals will pair up with the electrons from the hydroxide ions.

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Answer: the answer is a=10m/s^2 right

Explanation: it just make more since then the other answers .

Answer:

c 10

Explanation:

ape.x verified

In an ecosystem, the effect of the chemical industry  which is a positive one is advancements in medicine.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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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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