Suppose a 250. mL flask is filled with 0.40 mol of NO3 and 1.5 mol of NO. The following reaction becomes possible: NO (g)+NO2NO2(E) The equilibrium constant K for this reaction is 4.10 at the temperature of the flask. Calculate the equilibrium molarity of NO.

Answer:

A siege engine is a device that is designed to break or circumvent heavy castle doors, thick city walls and other fortifications in siege warfare. Some are immobile, constructed in place to attack enemy fortifications from a distance, while others have wheels to enable advancing up to the enemy fortification.

Explanation:

When the negative end of one water molecule is drawn toward the positive end of another water molecule, a hydrogen bond is created between the two water molecules.

Amazingly, water can cling to both other substances and to itself. The cohesion characteristic of water is the ability of water molecules to attract other water molecules, making water a "sticky" liquid.

The disparity in charge between hydrogen ions that are slightly positive and other hydrogen ions that are slightly negative results in hydrogen bonds, which are electrostatic forces that attract. Hydrogen bonds develop between nearby hydrogen and oxygen atoms of adjacent water molecules in the case of water. A connection called a hydrogen bond is produced by the attraction between individual water molecules.

To know more about hydrogen:

https://brainly.com/question/29765115

#SPJ4

Answer:

erosion is the right answer

Answer:

4NO2 + 2Na2O + O2 → 4NaNO3

Answer:

Change in chemical properties

Explanation:

The mass of the fungus that is allowed in the shipment is 900 mg.

We know that a toxin is that which is able to cause damage in the system of any organism that has become exposed to the toxin. Thus a toxin must be something that is poisonous to the individual and we would have to avoid the toxin at all cost.

In this case, we have to know that the unit of ppb is the same unit that we call the micro gram per kilogram. We would apply this in the calculation. The implication of that is the allowed amount of the fungus is actually 25 μg/Kg

We now are told that the total mass of the shipments that have been transported is about 36 000 kg.

Let the maximum mass of the fungus be x

25 μg/Kg = x/36 000 kg

x = 25 μg/Kg * 36 000 kg

x = 9 * 10^5  μg or 900 mg

Learn more about parts per billion:https://brainly.com/question/27371716

#SPJ1

The value of K will vary depending on the specific conditions of the reaction.

The equilibrium constant, denoted as K, expresses the ratio of the concentrations (or partial pressures) of the products to the concentrations (or partial pressures) of the reactants at equilibrium. For the given reaction:

2 CH₃Cl(g) + Cl₂(g) ⇌ 2 CH₂Cl₂(g) + H₂(g)

The equilibrium constant expression can be written as:

K = [CH₂Cl₂]²[H₂] / [CH₃Cl]²[Cl₂]

Note that the concentrations of gases are usually expressed in terms of their partial pressures. If the concentrations are given in molarities, you can replace them with the corresponding partial pressures using the ideal gas law.

It's important to note that without specific information on the concentrations (or partial pressures) of the substances at equilibrium, it's not possible to calculate the numerical value of the equilibrium constant K. The value of K will vary depending on the specific conditions of the reaction.

Learn more about equilibrium constant from the link given below.

https://brainly.com/question/28559466

#SPJ4

The reaction of acetylene (\(C_2H_2\)) with \(NaNH_2\) (sodium amide) results in the formation of sodium acetylide (\(NaC_2H\)).

Here's the structural representation of the product:

     H     H

     |     |

H-C≡C-Na

In the structure above, the two hydrogen atoms are bonded to the carbon atoms in acetylene, and the sodium atom is bonded to one of the carbon atoms. The triple bond between the two carbon atoms is represented by the triple lines (≡). The charges and nonbonding electrons are not shown since acetylene (\(C_2H_2\)) does not have any formal charges or nonbonding electrons.

To learn more about acetylene click here https://brainly.com/question/28916568

#SPJ11

Yes, NaOH is an Arrhenius base because it increases the concentration of hydroxide ions when dissolved in a solution.

According to Arrhenius theory proposed by Swedish chemist Svante Arrhenius defines that an acid is the substance that increases the concentration of hydrogen ions (H+) ions in a solution, while a base is a substance that increases the concentration of hydroxide ions (OH-) ions in a solution.

When NaOH is dissolved in water, it dissociates in sodium ions (Na+) and hydroxide ions (OH-). The presence of hydroxide ions in the solution makes it basic. The hydroxide ions are responsible for increasing the concentration of the hydroxide ions (OH-) in the solution making NaOH an Arrhenius base.

The dissociation of NaOH in water can be represented by the following equation:

[NaOH (s)] → [Na+ (aq)]+ [OH- (aq)]

To study more about Arrhenius base:

https://brainly.com/question/27902993

Answer:An accompanying WMO report on greenhouse gas concentrations shows that 2015-2019 has seen a continued increase in carbon dioxide (CO2) levels and other key greenhouse gases in the atmosphere to new records, with CO2 growth rates nearly 20% higher than the previous five years.

Explanation:That's because the annual growth rate of atmospheric carbon dioxide has roughly tripled, from 0.6 ppm per year in the early 1960s to an average 2.1 ppm during the past 10 years. At Mauna Loa, carbon dioxide concentrations in 2015 jumped by 3.05 ppm

Answer:

D. Use x-ray radiation to see if there are any fractured bones

Explanation:

The football player may have fractured a bone while he was practicing or playing, so it is best for the doctor to check if the player broke his bone or fractured it.

Diagnosis is the identification of the illness or disease through tests and other technologies. The doctor can use an X-ray to identify any broken bones. Thus, option D is correct.

X-ray is a diagnostic method that uses high-energy electromagnetic x-ray radiation. It aids in the formation of images of the hard tissues and structures like the bones in the body.

It aids in the diagnosis and treatment of bone structures and fractures. The high-energy rays are capable of passing through the body structure and allow image formation.

It visualizes the bones and joints and can be used in the case of the player experiencing acute pain to diagnose and treat any fractured bones if present.

Therefore, an X-ray should be used to diagnose acute pain in the knees.

Learn more about X-rays here:

https://brainly.com/question/3936513

#SPJ5

5 valence electrons are provided by nitrogen to make the lewis structure of NH₃

The nitrogen atom provide 5 electrons and each of the three hydrogen atoms has 1 electron. So the total number of electrons for ammonia will therefore be 8.

In the Lewis structure of ammonia, Nitrogen is present in center and the three hydrogen atoms are present and bonded at sides of nitrogen as indicated in image  Nitrogen also has a lone pair above it that is the reason why ammonia act as a Lewis base. Ammonia has tetrahedral geometry due to four pairs of electrons .

The lone pair makes space for itself by pushing the three hydrogen atoms together a little and the H-N-H bond angles are slightly less (106.6°) than the ideal tetrahedral angle of 109.5°.

To look more about Ammonia click here

brainly.com/question/15409518

#SPJ4

The solubility of calcium hydroxide (Ca(OH)₂) in water exhibits a balanced equilibrium reaction, which is as follows:

Ca(OH)₂(s) ⇌ Ca²⁺(aq) + 2OH⁻(aq)

When the observable qualities, such as colour, temperature, pressure, concentration, etc. do not vary, the process is said to be in equilibrium.

The balanced equilibrium reaction of the solubility of calcium hydroxide (Ca(OH)₂) in water is:

Ca(OH)₂(s) ⇌ Ca²⁺(aq) + 2OH⁻(aq)

The equilibrium expression for this reaction can be written as:

Ksp = [Ca²⁺][OH-]²

where Ksp is the solubility product constant, and [Ca²⁺] and [OH⁻] are the molar concentrations of the dissolved calcium ion and hydroxide ion, respectively, at equilibrium.

Note that the expression only includes the concentration of the dissolved species because the solid calcium hydroxide is not included in the equilibrium expression, as it does not contribute to the concentration of ions in the solution.

Learn more about equilibrium expression on:

https://brainly.com/question/16917624

#SPJ11

Answer:

1.5x1020 molecules = 2.5x10-4 moles.

The equilibrium constant, K, for the reaction H2(g) + I2(g) ⇄ 2HI(g) can be calculated using the expression K= [HI]2/([H2][I2]). Since the concentrations of H2, I2, and HI are given in the question, we can calculate the equilibrium constant, K, for the reaction.

K = [HI]2/([H2][I2]) = (1.77 × 10-2)2/((1.83 × 10-3)(3.13 × 10-3)) = 4.43 × 104. Therefore, the equilibrium constant, K, for the reaction H2(g) + I2(g) ⇄ 2HI(g) at 425°C is 4.43 × 104.

Using the specified concentrations of H2, I2, and HI, it appears that you have correctly calculated the equilibrium constant, K, for the reaction H2(g) + I2(g) 2HI(g) at 425°C. The ratio of the concentrations of the reactants and products at equilibrium, K, is represented by each concentration being raised to the power of its stoichiometric coefficient.

The concentration of the product, HI, is preferred above the concentrations of the reactants, H2 and I2, at equilibrium, as shown by the value of K = 4.43 104 in this instance. This suggests that at equilibrium, the forward reaction—the creation of HI—is preferred.

It is significant to remember that the equilibrium constant, K, is temperature-dependent, and that temperature changes affect K's value.

Learn more about  equilibrium  at:

https://brainly.com/question/30694482

#SPJ1

Yes, advancements in technology can pose both direct and indirect threats to the global environment. Direct threats include the production and disposal of electronic waste, which can release harmful substances into the environment.

Indirect threats arise from increased energy consumption and carbon emissions associated with the manufacturing and use of technology. For example, the production of electronic devices requires the extraction of raw materials, which can contribute to habitat destruction and pollution. Additionally, the increased use of technology can lead to excessive energy consumption, contributing to climate change and resource depletion.

However, it's important to note that advancements in technology can also provide solutions to environmental challenges, such as renewable energy technologies and sustainable manufacturing practices.

To know more about habitat refer for :

https://brainly.com/question/12578502

#SPJ11

The incorrect statement about the setup of a voltaic cell is (d) "In voltaic cells, oxidation occurs at the cathode and reduction occurs at the anode."

In a voltaic cell, oxidation actually occurs at the anode and reduction occurs at the cathode. This is because electrons flow from the anode (where oxidation takes place) to the cathode (where reduction takes place). The anode is the electrode where oxidation reactions take place and electrons are released, while the cathode is the electrode where reduction reactions occur and electrons are gained. To explain further, in a voltaic cell, the anode is the electrode where the oxidation half-reaction occurs. Oxidation involves the loss of electrons and the anode serves as the source of electrons. These electrons then flow through an external circuit to the cathode. At the cathode, reduction takes place, which involves the gain of electrons. The cathode acts as the site where reduction half-reactions occur, consuming the electrons that flow from the anode. Therefore, the correct statement should be: "In voltaic cells, oxidation occurs at the anode and reduction occurs at the cathode."

learn more about voltaic cell here: brainly.com/question/31729529

#SPJ11

Answer:

5.12x10¹¹ millimeters

Explanation:

Milli is a prefix used in science and engineering to decribe the number as the exponent x10⁻³. In the prefix kilo, the number is at the exponent x10³.

5.12x10⁵ kilometers are:

5.12x10⁵ kilometers * (1000m / 1km) = 5.12x10⁸ meters

5.12x10² meters * (1m / 1000millimeters) = 5.12x10¹¹ millimeters

Answer:

Resonance effect is a chemical phenomenon that occurs when electrons in a molecule are delocalized or spread out over multiple atoms or bonds. This results in the stabilization of the molecule and can affect its reactivity and properties. Resonance occurs when there are multiple ways to draw the Lewis structure of a molecule, and each structure contributes to the overall electronic structure of the molecule. The resonance effect is commonly observed in organic chemistry, where it can influence the acidity or basicity of a molecule, as well as its stability and reactivity in chemical reactions.

Answer: lactate

Explanation:

The missing circulating energy substrate is lactate. Lactate is a product of anaerobic metabolism and can serve as an energy source in certain conditions, such as during intense exercise or in tissues with high glycolytic activity. It can be converted back into glucose through a process known as the Cori cycle and utilized as an energy substrate by various tissues in the body.

Answer: A little bit confused can you explain what I have to do

Explanation:

Answer:

0.629 atm

Explanation:

P1V1 = P2V2

P1 = 0.986 atm

V1 = 10.2 L

P2 = ?

V2 = 16.0 L

Solve for P2 --> P2 = P1V1/V2

P2 = (0.986 atm)(10.2 L) / (16.0 L) = 0.629 atm

Answer:

A

Explanation:

1mole=22.4L

(22.4/1mole)×5.24

=117,376L

It is the charterer's duty to hire a ship for a certain period of time to transport cargo or passengers.

The charterer's job is to hire a ship for a set amount of time to transport goods or people. They are in charge of negotiating the charter conditions with the vessel owner or broker, setting up the required licences and paperwork, and ensuring the timely and safe delivery of cargo or passengers. Broker: The broker's job is to make it easier for the charterer and the vessel owner to come to an agreement. They serve as middlemen, using their connections and market expertise to identify suitable vessels and agree upon conditions of charter that are acceptable to both sides. A appropriate vessel must be provided by the vessel owner in order to satisfy the charterer's needs. They keep the vessel seaworthy, adhere to pertinent laws, and guarantee effective operations throughout the charter.

To know more about charter, here:

https://brainly.com/question/27998149

#SPJ4

In paper chromatography, photosynthetic pigments from a plant pigment extract will separate due to their differences in solubility in a chromatography transport solution (mobile phase) and differences in affinity for the chromatography paper (stationary phase).

The mobile phase in paper chromatography is typically a solvent or a mixture of solvents. The pigments within the plant extract have varying degrees of solubility in the mobile phase. Some pigments may be more soluble and will dissolve more readily in the mobile phase, allowing them to travel further up the paper.

Other pigments may have lower solubility and will not dissolve as readily, causing them to remain closer to the starting point. This difference in solubility leads to separation of the pigments along the chromatography paper.

Additionally, the chromatography paper, which acts as the stationary phase, has an affinity for certain pigments. The paper contains polar or nonpolar groups that can interact with the pigments through various intermolecular forces such as hydrogen bonding or dipole-dipole interactions. Pigments that have a higher affinity for the paper will bind more strongly and move slower, while pigments with a lower affinity will bind less and move faster.

Differences in molecular weight, boiling point, and pH do not directly influence the separation of photosynthetic pigments in paper chromatography.

Molecular weight and boiling point are not significant factors in this technique as it primarily relies on differences in solubility and affinity. pH, on the other hand, can influence the stability and color of the pigments but does not play a direct role in their separation within the chromatography system.

In conclusion, the separation of photosynthetic pigments in paper chromatography is primarily driven by their differences in solubility in the mobile phase and affinity for the chromatography paper, while molecular weight, boiling point, and pH do not have a direct impact on the separation process.

For more such questions on chromatography visit:

https://brainly.com/question/11960023

#SPJ8

Answer:

a. The limiting reagent is NO2.

b. 126g of nitric acid can be produced.

Explanation:

1st) It is necessary to write the balanced equation:

From the balanced equation we know that 3 moles of NO2 (3x46g= 138g) react with 1 mol of water (18g/mol) to produce 2 moles of nitric acid (2x63g= 126g) and 1 mol of NO (30g/mol).

2nd) To calculate the limiting reagent it is necessary to use the given values and the stoichiometry of the balanced equation:

The 10.0g of NO2 will need 1.30g of H2O to react.

The 30.0g of H2O will need 230g of NO2 to react.

So, as we only have 10.0g of NO2 and 30.0g of H2O, the limiting reagent will be NO2.

3rd) Now, to calculate the theorical yield, we need to use the stoichiometry of the balanced equation using the limiting reagent:

1 mol of H2O produces 2 moles of nitric acid. With the molar mass of nitric acid (63g/mol), we can calculate the grams.

Finally, 126g of nitric acid will be produced if the reaction is 100% efficient (theoretical yield).

The correct order of decreasing boiling points is: I > III > II. The closest answer choice is b) I > III > II.

The order of boiling points of the given compounds can be determined by analyzing their intermolecular forces, which are influenced by the molecular weight, polarity, and ability to form hydrogen bonds.

I. CH3CH2CH2CH2NH2 (1-amino-butane): This compound can form hydrogen bonds between the NH2 group and the adjacent molecules, and it also has a higher molecular weight than the other two compounds, which increases its boiling point.

II. CH3CH2OCH2CH3 (diethyl ether): This compound is polar due to the oxygen atom, but it cannot form hydrogen bonds, which reduces its boiling point compared to compound I.

III. CH3CH2CH2CH2OH (1-butanol): This compound is also polar and can form hydrogen bonds, but its molecular weight is lower than that of compound I, which reduces its boiling point.

For more question on boiling points click on

https://brainly.com/question/29233996

#SPJ11

correct question

arrange the following compounds in order of decreasing boiling point, putting the compound with the highest boiling point first.

I. CH3CH2CH2CH2NH2      

II. CH3CH2OCH2CH3  

III. CH3CH2CH2CH2OH  

a) I > II > III.

b) I > III > II.

c) III > I > II.

d) III > II > I.

We can see here that if the number of individuals that are added to a population is close to the number of individuals that are removed, the population size will generally remain relatively stable. This is because the rate of population growth is balanced by the rate of population decline.

Population refers to a group of individuals of the same species that inhabit a particular geographic area and can potentially interbreed. In the context of biology and ecology, population is a fundamental concept that helps describe and understand the dynamics of living organisms.

A population can refer to a wide range of organisms, including animals, plants, or microorganisms, and it is often characterized by its size, density, distribution, and composition.

Learn more about population on https://brainly.com/question/29885712

#SPJ4

The pH of the buffer solution is approximately 8.41.

To calculate the pH of a buffer solution, we can use the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA])

Given:

[HCN] = 0.80 M

[CN-] = 0.10 M

pKa = 9.31

First, we need to determine the ratio of [A-]/[HA]:

[A-]/[HA] = [CN-]/[HCN]

Substituting the given values:

[A-]/[HA] = 0.10 M / 0.80 M

[A-]/[HA] = 0.125

Now we can plug this ratio into the Henderson-Hasselbalch equation:

pH = 9.31 + log(0.125)

Using a calculator:

pH ≈ 9.31 - 0.9031

pH ≈ 8.4069

Therefore, the pH of the buffer solution is approximately 8.41.

Learn more about buffer solution from the link given below.

https://brainly.com/question/31367305

#SPJ4