2 SO₂ + O₂ → 2 SO₃ + energy This reaction would be considered

The mass of argon at STP is 39.9 g.

The ideal gas equation is given as :

P V = n R T

where,

P = pressure of the gas

V = volume of the gas

R = gas constant =0.082 atm L / mol K

at STP  means the standard pressure of gas is 1 atm and the standard temperature of the gas is 273.15 K.

n = PV R T

n = ( 1 × 22.4 ) / ( 0.082 × 273.5)

n = 1.00 mol

mass = moles × molar mass

mass = 1 mol × 39.9 g/mol

mass = 39.9 g

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The final concentration of A2 ([A2]) at equilibrium is approximately 0.5682 M.  To determine the final concentrations of A and A2 at equilibrium, we need to use the given equilibrium constant (K) and the initial concentration of A2.

Let's denote the final concentrations of A and A2 as [A] and [A2].

The equilibrium equation for the reaction A2 (g) ⇌ 2A (g) can be written as:

K = [A]^2 / [A2]

Given:

Initial [A2] concentration = 0.600 M

Equilibrium constant (K) = 4.2 × 10^(-4)

Substituting the known values into the equilibrium equation, we have:

4.2 × 10^(-4) = [A]^2 / 0.600

To find the final concentration of A ([A]), we can rearrange the equation:

[A]^2 = 4.2 × 10^(-4) × 0.600

[A]^2 = 2.52 × 10^(-4)

Taking the square root of both sides:

[A] ≈ √(2.52 × 10^(-4))

[A] ≈ 0.0159 M

Therefore, the final concentration of A ([A]) at equilibrium is approximately 0.0159 M.

Since A2 (g) ⇌ 2A (g) has a stoichiometric ratio of 1:2, the final concentration of A2 can be determined by subtracting the final concentration of A ([A]) from the initial concentration of A2:

[A2] (final) = [A2] (initial) - 2[A]

[A2] (final) ≈ 0.600 M - 2 × 0.0159 M

[A2] (final) ≈ 0.5682 M

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Answer:

In the same phase

Explanation:

Because when you make a solution you have to keep them in the same phase or you will oof.

Diselenium hexabromide has the chemical formula Si2Br6.

The nomenclature of covalent compounds utilizing prefixes served as the basis for the name of disilicon hexabromide (di- represents two atoms and hexa- represents 6 atoms). Ionic compounds, on the other hand, use the IUPAC nomenclature system based on the cation's valency.

A compound's bonding will be covalent if it is created from two non-metals. In most cases, ionic compounds are created when a metal reacts with a nonmetal (or a polyatomic ion). The reaction between two nonmetals produces covalent compounds.

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Answer:

1 mole of iron (Fe) = 56 g (molar mass)

Since 56 g of iron = 1 mol.

Therefore, 112 g of iron= 1/ 56 ×112 mol = 2 mol.

Explanation:

Answer:

A single mutation can have a large effect, but in many cases, evolutionary change is based on the accumulation of many mutations with small effects. Mutational effects can be beneficial, harmful, or neutral, depending on their context or location. Most non-neutral mutations are deleterious.

Explanation:

Answer:  NaNO3 (Sodium Trioxonitrate (V) )

Explanation:

The equation of the reaction is; HNO3 + NaOH -----> H2O + NaNO3

Answer: its B

Explanation:

As the intermolecular force of attraction increases the boiling point also increases and as the intermolecular force decreases the boiling point also decreases this implies that intermolecular force is directly proportional to the boiling point.

Answer:

The stronger the forces, the more heat that must be added to boil the liquid.

Explanation:

iykyk

The solution volume inside the dialysis tubing will decrease because the tubing is semi-permeable.

Diаlysis tubing is а selectively permeаble membrаne becаuse it hаs pores thаt limit the size of molecules thаt cаn pаss through it. Stаrch molecules аre too lаrge to pаss through аnd will stаy on the side where they were originаlly plаced. Glucose, iodine, аnd wаter molecules аre smаll enough to fit through the pores. If there is а concentrаtion grаdient of glucose or iodine then these molecules cаn diffuse down their grаdients

This means that only small molecules such as water, glucose, and oxygen can pass through the membrane, while larger molecules such as salts, proteins, and blood cells cannot pass through the membrane. As a result, the solution inside the dialysis tubing will become more concentrated.

Your question is incomplete, but most probably your question can be seen in the Attachment.

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Answer:

b. nuclear fuel has a higher energy density than fossil fuels.

Explanation:

Nuclear fuel is a quantity of energy measured in joules; therefore, it has the same units as electrical and mechanical energy.

When two of the phosphoric acid's hydroxyl groups interact with hydroxyl groups on other molecules to produce two ester bonds, a phosphodiester bond is created.

The condensation reaction between the phosphate groups and the hydroxyl groups of the two sugar groups produces the phosphodiester bonds. For instance, the hydroxyl group is created when one oxygen atom and one hydrogen atom combine to form a link.

A phosphate group connects two nearby carbons through ester connections to form a covalent bond known as a phosphodiester bond. A condensation reaction between a phosphate group nd a hydroxyl group from two sugar groups produces the link.

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Answer: B

Explanation: high tides and low tides are usually caused by the moon. The moons gravitational pull generates something called the tidal force. I’m not gonna go deep into this but yeah I think the answer is B

Answer:

:)

Explanation:

Answer:

Examine the units: If the density is 1 g/mL, how many mL do you need to make 250 g?

X mL * 1 g/mL = 250 g

Solve for X

x mL = 250 g / 1 g/mL = 250 mL

Hope this helps :)

The volume of water = 250 L

\(density = \frac{mass}{volume}\)

Given, density = 1.0 g/L = 0.001 kg/L

           mass = 250 g = 0.25 kg

Putting the values in the equation

\(0.001 = \frac{0.25}{volume}\)

\(volume = \frac{0.25}{0.001}\)

\(volume = 250 L\)

Hence, the volume of the water is 250 L.

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By using the ideal gas law to get volume we have"

Where v is volume, T is temperatute, n is number of moles, R is the molar gas constant and P is pressure. At STP P= 101,325 Pa, T= 273.15 K and R= 8.314 J/mol K

We must first convert mass to moles:

By substituting this value into the ideal gas law we have:

1.9502e-6L of H2 gas reacted at STP

Green plants use two molecules, carbon dioxide (CO₂) and water (H₂O), to make glucose through the process of photosynthesis.

During photosynthesis, plants capture energy from sunlight and convert it into chemical energy stored in glucose. The process occurs in the chloroplasts, which contain the pigment chlorophyll that gives plants their green color. Carbon dioxide is obtained from the atmosphere through tiny openings in the plant's leaves called stomata.

Water is absorbed by the roots and transported to the leaves through specialized tissues called xylem. In the first stage of photosynthesis, known as the light-dependent reactions, light energy is absorbed by chlorophyll, which triggers a series of chemical reactions that produce energy-rich molecules like ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).

These energy carriers are then utilized in the next stage. In the second stage, called the light-independent reactions or the Calvin cycle, carbon dioxide from the atmosphere enters the leaf and combines with the energy-rich molecules ATP and NADPH.

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Answer:

The reactants

Explanation:

The molecules on the left side of the reaction are the reactants. Reactants are the molecules which react with one another to form something new.

The molecules on the right side of the reaction are the products. Products are the molecules that form in response to the reaction.

*sorry I can't give a full explanation.*

g = 9.8 m/s²

w = m*g

Weight of cat: 55 N = m*9.8

m = 5.61 kg

Weight of dog: 110 N = m*9.8

m = 11.22 kg

There is gravitational potential energy (GPE) acting on the cat since it's at the very top.

GPE of cat = m*g*h = 5.61*9.8*2 = 109.96 J

GPE of dog = m*g*h = 11.22*9.8*0 = 0 J (it's 0 m height because it's on the floor instead of in the tree)

But, if the dog was also 2 m up in the tree, its GPE would be 219.91 J.

As you can see, it's GRAVITATIONAL potential energy is bigger than the cat because it weighs more. Generally, if you were just trying to find the force which is w = m*g (since weight is a force), you would see that the bigger the mass, the bigger the force, and gravity stays the same.

Hope this helped

Answer: Particles in all states of matter are in constant motion and this is very rapid at room temperature. A rise in temperature increases the kinetic energy and speed of particles; it does not weaken the forces between them. ... Individual particles in liquids and gases have no fixed positions and move chaotically.

HOPE THIS HELPS

Silicon (Si) is a second period element that is a covalent network solid in its standard state.

In its standard state, silicon exists as a three-dimensional network of covalent bonds. Each silicon atom forms four covalent bonds with its neighboring silicon atoms, resulting in a crystal lattice structure known as silicon dioxide (SiO2), or commonly referred to as quartz. The covalent bonds in silicon dioxide are strong and extend throughout the entire crystal, forming a rigid and interconnected network. This structure gives silicon its characteristic properties, such as high melting and boiling points, hardness, and electrical insulating behavior.

The covalent network in silicon dioxide arises from the sharing of electrons between silicon and oxygen atoms. Each silicon atom shares one of its valence electrons with each of the oxygen atoms, and in turn, each oxygen atom shares two of its valence electrons with two silicon atoms. This sharing of electrons results in a stable structure where all atoms have a complete outer electron shell, fulfilling the octet rule. Due to the strong covalent bonds and the extensive network, silicon dioxide is a solid at standard temperature and pressure and does not exhibit the typical properties of a molecular compound, such as low melting and boiling points.

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Answer:A

Explanation: Since the boiling point is 212. As salt keeps getting added the boiling temperature keeps going up. Meaning it will boil at a high temp.

Answer:

2KClO3 》》2KCl +3O2

C+ O2》》CO2

number of C moles

Required O2 moles (According to the mole ratio )

Relevant to the first equation, find the moles the KClO3, which is used to produce that amount of O2 moles

Now you can find the mass of KClO3

I mentioned the useful steps which can guide you to get the answer.

Explanation:

The  theoretical yield of the solution has been obtained as  17.1 g

Let us recall that each time that we hear about a chemical reaction what we are talking about is the combination of two or more reactants and a product must be formed. In this case we are to find the theoretical yield of this reaction.

We have been told that the HCl is in excess thus we have the 2-methyl-2-butanol as the limiting reactant.

Mass of the solution = density * volume

Mass of the solution = 0.805 g/ml * 17.6 ml

= 14.2 g

Number of moles = mass/molar mass

= 14.2 g/88 g/mol

= 0.16 moles

Given that the reaction is 1:1, 0.16 moles of the product is obtained.

Theoretical yield = Number of moles products * molar mass of products

= 0.16 moles * 106.59 g/mol

= 17.1 g

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Answer:

.....false

Explanation:

the particles in the air are packed apart whereas the particles in steel are closely packed and sound travel faster in solids than in gasses..

Answer:

False

Explanation:

The speed of sound is quickest in mediums that have their molecules close apart.  The speed of sounds is quickest in solids, followed by liquids, and slowest in gasses.  The close the molecules are together, the quicker sound travels.  The sound would travel faster in the steel than in the air.

This is due to the fact that sound waves are compression waves.  This means that they rely on the way molecules collide with one another and act sort of like a spring.  

Fun fact: In the old days, people used to put their ears to the train tracks to see if a train is coming.  Sound moves so fast in metal that they can sense the vibrations miles before the train arrived.

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Olive and canola oils are known for their high content of monounsaturated fatty acids (MUFAs). The correct answer is C) monounsaturated.

MUFAs are considered to be heart-healthy fats as they can help to lower cholesterol levels and reduce the risk of heart disease. In addition to MUFAs, these oils also contain smaller amounts of polyunsaturated and saturated fats. Polyunsaturated fats include omega-3 and omega-6 fatty acids, which are also beneficial for heart health and can help to reduce inflammation in the body.

However, olive and canola oils are not considered to be significant sources of these fatty acids. Saturated fats, on the other hand, are known to increase cholesterol levels and increase the risk of heart disease, so it is important to limit intake of these fats. In summary, the high percentage of monounsaturated fatty acids in olive and canola oils makes them a healthier choice compared to oils high in saturated fats.

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25.41 grams of silver nitrate (AgNO₃) are required to fully react with 10.6 grams of sodium sulfate (Na₂SO₄) according to the given balanced equation   2 AgNO₃ (aq) + Na₂SO₄ (aq) --> Ag₂SO₄ (s) + 2 NaNO₃ (aq) .

The amount of silver nitrate (AgNO₃) required to react with sodium sulfate (Na₂SO₄), we need to use stoichiometry and the molar ratios between the reactants and products.

First, we need to determine the molar masses of AgNO₃ and Na₂SO₄:

- AgNO₃: Ag (107.87 g/mol) + N (14.01 g/mol) + 3O (3 × 16.00 g/mol) = 169.87 g/mol

- Na₂SO₄: Na (2 × 22.99 g/mol) + S (32.07 g/mol) + 4O (4 × 16.00 g/mol) = 142.04 g/mol

Next, we can set up the stoichiometric ratio between AgNO₃ and Na₂SO₄:

2 AgNO₃ : 1 Na₂SO₄

Now, we can calculate the amount of AgNO₃ required to fully react with 10.6 g of Na₂SO₄.

Convert the mass of Na₂SO₄ to moles.

moles of Na₂SO₄ = mass / molar mass = 10.6 g / 142.04 g/mol ≈ 0.0748 mol

Use the stoichiometric ratio to find the moles of AgNO₃.

moles of AgNO₃ = (0.0748 mol Na₂SO₄) × (2 mol AgNO₃ / 1 mol Na₂SO₄) = 0.1496 mol

Convert moles of AgNO₃ to grams.

mass of AgNO₃ = moles × molar mass = 0.1496 mol × 169.87 g/mol ≈ 25.41 g

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According to the reaction: 2 AgNO₃ (aq) + Na₂SO₄ (aq) --> Ag₂SO₄ (s) + 2 NaNO₃ (aq)

25.35 grams of silver nitrate are required to fully react with 10.6 g of sodium sulfate.

To determine the amount of silver nitrate required to fully react with 10.6 g of sodium sulfate, you first need to find the moles of sodium sulfate and use stoichiometry to find the moles of silver nitrate needed. Then, convert the moles of silver nitrate into grams.

1. Find moles of sodium sulfate (Na₂SO₄):
Molar mass of Na₂SO₄ = (2 x 22.99) + (1 x 32.07) + (4 x 16) = 142.04 g/mol
moles of Na₂SO₄ = mass/molar mass = 10.6 g / 142.04 g/mol = 0.0746 moles

2. Use stoichiometry to find moles of silver nitrate (AgNO₃) required:
From the balanced equation, 2 moles of AgNO₃ react with 1 mole of Na2SO4
moles of AgNO₃ = 2 * moles of Na₂SO₄ = 2 * 0.0746 moles = 0.1492 moles

3. Convert moles of AgNO₃ to grams:
Molar mass of AgNO₃ = (1 x 107.87) + (1 x 14.01) + (3 x 16) = 169.88 g/mol
mass of AgNO₃ = moles * molar mass = 0.1492 moles * 169.88 g/mol = 25.35 g

So, 25.35 grams of silver nitrate are required to fully react with 10.6 g of sodium sulfate.

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Each compound have consisted of one type of molecule. Thus, option B is correct.

Compounds have been the chemical moiety that has been consisted of the number of molecules.

The molecules have consisted of varying atoms in the fixed proportion formed by the intermolecular interactions. The identical molecules club together with the intramolecular interactions and result in the compound.

Examples of compounds have been sugar, water, carbon dioxide, table salt, etc.

Thus, each compound have consisted of one type of molecule. Thus, option B is correct.

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The noble gas is Kyrpton

The ideal gas equation is give below:

PV = nRT

number of moles n = mass/molar mass

n = m/Mm

therefore, the ideal gas equation becomes;

PV = mRT/Mm

Mm = mRT/PV

substituting the data provided

Mm = 1.07 * 308 * 8.314/90.3 * 0.363

Mm, molar mass = 83.6

the noble gas that has a mass of 83.6 is Krypton.

Therefore, the noble gas is Kyrpton

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The chemical has a percent composition of 56.35% oxygen and 43.65% phosphorus.

A substance has an oxygen content of 88.79% and a hydrogen content of 11.19%. Calculate this compound's empirical formula. Nonetheless, it's customary to employ the atom ratio with the smallest whole number. H 2 O is the compound's empirical formula as a result.

P mass of 30.98 g and O mass of 40.00 g add up to 70.98 g.

Phosphorus: \((30.98 g / 70.98 g) x 100% = 43.65%\)

\((40 g/70.98 g) x 100% = 56.35% for oxygen.\)

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