The Kw for water at 0 C is 0.12 x 10^-14 . Calculate the pH of a neutral aqueous solution at 0 C?

When asked to find the pH after initial mols of titrant are added, how do we solve for pH.

First genuinely discover the moles of extra H₃O⁺. The extra may be calculated via way of means of subtracting preliminary moles of analyte B from moles of acidic titrant added, assuming a one-to-one stoichiometric ratio. Once the range of moles of extra H₃O⁺ is determined, [H₃O⁺] may be calculated. In water, a proton is transferred from one water molecule to any other to supply a hydronium ion (H₃O⁺) and a hydroxide ion (OH⁻). The pH of the solution can be calculated as follows-

pH  = -log (H₃O⁺)

To learn more about hydronium ion check the link below-

brainly.com/question/27586088

#SPJ4

The basis of the VSEPR model of molecular bonding is the minimization of repulsion between electron pairs surrounding an atom in a molecule.

VSEPR stands for Valence Shell Electron Pair Repulsion. The VSEPR model is a theory used to predict the geometrical shapes of molecules based on the repulsion between their electron pairs. According to the model, electron pairs in the valence shell of an atom tend to stay as far apart as possible to minimize the repulsion between them. This results in a particular molecular geometry that depends on the number of bonding and non-bonding electron pairs around the central atom.

Step-by-step:
1. Determine the central atom in the molecule.
2. Count the total number of electron pairs (both bonding and non-bonding) surrounding the central atom.
3. Arrange these electron pairs in a way that they are as far apart from each other as possible, to minimize repulsion.
4. The arrangement of electron pairs determines the molecular geometry.

In summary, the VSEPR model of molecular bonding is based on minimizing the repulsion between electron pairs surrounding an atom in a molecule, which helps in predicting the geometrical shapes of molecules.

To know more about Valence Shell Electron Pair Repulsion. visit:

brainly.com/question/31129877

#SPJ11

The option is A) An increase in distance between the proton and a nearby electronegative group.

Proton is a subatomic particle that is one of the components of an atom. It is made up of three quarks and has a positive charge. Protons have a mass of [tex]1.6726 \times 10^{-27[/tex] kg, which is nearly 2,000 times the mass of an electron. Protons are the most abundant particle in the nucleus of an atom, and they are held together by the strong nuclear force.  

The chemical shift of a proton in ^1H NMR is determined by the environment in which the proton is located. Electronegative groups, such as oxygen, nitrogen and chlorine, will cause the proton to experience a higher field and thus resulting in a higher shift. Increasing the distance between the proton and the electronegative group will reduce the field experienced by the proton and thus resulting in a lower shift.

To learn more about proton

https://brainly.com/question/1481324

#SPJ4

The amount of energy used to heat 20 g of zinc from 45°C to 65°C is 176 J.

The amount of energy used to heat a substance is determined by its specific heat capacity, mass, and the change in temperature. In this case, we are given the mass of zinc (20 g), the specific heat capacity of zinc (0.440 J/g °C), and the change in temperature (20°C).

To calculate the amount of energy used to heat the zinc, we can use the formula:

Energy = mass x specific heat capacity x change in temperature

Plugging in the given values, we get:

Energy = 20 g x 0.440 J/g °C x 20°C = 176 J

This calculation is useful in understanding the amount of energy required to change the temperature of a substance and can be applied to other materials with known specific heat capacities.

Learn more about energy here:

https://brainly.com/question/1932868

#SPJ4

HCl cannot make hydrogen bond which is not polarized.

Why does Hydrogen bond happen?

Hydrogen bonding happens when a hydrogen atom bonded to a highly electronegative atom (For example oxygen, nitrogen, or fluorine) is attracted to another highly electronegative atom in a nearby molecule. The attraction is just because of partial negative charge on the electronegative atom that is caused by its higher electron density.

For the case of HCl (hydrogen chloride),

the hydrogen atom is covalently bonded to chlorine that is moderately electronegative but not highly electronegative like oxygen or nitrogen.

So, the H-Cl bond is not polarized enough to create a significant partial positive charge on the hydrogen atom which is required for hydrogen bonding. Therefore, HCl cannot hydrogen bond.

Learn more about Hydrogen bond here,https://brainly.com/question/1420470

#SPJ4

According to the question the concentration of Cu²⁺ is 5.0 x 10-16 M.

Concentration is the ability to focus on a specific task or thought without being easily distracted by other things. It involves paying close attention to details, thinking deeply about the task at hand, and blocking out any extraneous noise or interruptions. Concentration requires practice and requires developing techniques to help maintain focus, such as setting a timer to work on a task, breaking a task into smaller parts, and avoiding multitasking. Concentration is an important skill that can help improve problem-solving skills, productivity, creativity, and mental well-being.

The reaction quotient, qc, is determined using the concentrations of the reactants and products at equilibrium. To calculate the concentration of copper (Cu2+), we need to use the equilibrium expression.
The reaction is:
Ag⁺ + Cu²⁺ → Ag⁺ + Cu²⁺
The equilibrium expression is:
Kc = [Ag⁺][Cu²⁺] / [Ag⁺]²
Rearranging the equation to solve for [Cu²⁺], we get:
[Cu²⁺] = (Kc * [Ag⁺]²) / [Ag⁺]
Plugging in the values, we get:
[Cu²⁺] = (5.0 x 10-16 * (1 M)²) / 1 M
Therefore, the concentration of Cu²⁺ is 5.0 x 10-16 M.

To learn more about concentration
https://brainly.com/question/28564792
#SPJ4

To make a 0.197 m nitric acid solution from a stock solution of 6.00 m nitric acid, you need to dilute the stock solution with water. The amount of concentrated acid needed can be calculated using the formula: C1V1 = C2V2

where C1 is the initial concentration of the stock solution, V1 is the volume of the stock solution needed, C2 is the final concentration of the dilute solution, and V2 is the total volume of the dilute solution.

In this case, we can plug in the values we have:

C1 = 6.00 m
C2 = 0.197 m
V2 = 75.0 ml

Solving for V1, we get:

V1 = (C2V2) / C1
V1 = (0.197 m * 75.0 ml) / 6.00 m
V1 = 2.47 ml

Therefore, you need to add 2.47 ml of concentrated nitric acid to 72.53 ml of water to obtain a total volume of 75.0 ml of the dilute solution.

To make a 0.197 M nitric acid solution with a total volume of 75.0 mL from a 6.00 M stock solution, you can use the dilution equation:

M1V1 = M2V2

Where M1 is the initial molarity (6.00 M), V1 is the volume of concentrated acid needed, M2 is the final molarity (0.197 M), and V2 is the final volume (75.0 mL). To find the volume of concentrated acid needed (V1), rearrange the equation:

V1 = (M2V2) / M1

To know more about stock solution visit:

https://brainly.com/question/25256765

#SPJ11

Moisture on the column can interfere with the binding of the protein to the stationary phase by disrupting the hydrogen bonding and electrostatic interactions that occur between the protein and the ligands. This can lead to reduced binding efficiency, lower resolution, and decreased overall performance of the column.

What is Moisture?

Moisture is a term used to describe the presence of water or other liquids in a material or environment. In many contexts, moisture refers specifically to the amount of water vapor in the air or in a substance, such as a solid or liquid.

In addition, moisture on the column can also promote non-specific binding of other proteins or impurities in the sample, leading to contamination and reduced purity of the final protein product. Therefore, it is important to ensure that the column is completely dry before loading the protein mix to achieve optimal binding and separation of the protein of interest.

Learn more about Moisture from the given link

https://brainly.com/question/30457844

#SPJ4

The evidence from the article that supports the claim is the fact that the article is about scientists studying the "Crater of Doom," which is the Chicxulub crater in Mexico.

This crater is thought to have been formed by an asteroid impact that occurred 66 million years ago, and it is connected to the extinction of the dinosaurs and many other species. In order to understand more about how the impact has impacted Earth's climate and ecosystems, the article outlines how researchers are analyzing the impact crater.

This evidence implies that there is consensus among scientists regarding the connection between the Chicxulub impact and the extinction event, and ongoing study is being done to understand the size and breadth of the impact, which supports the notion that an asteroid impact resulted in catastrophic changes to the Earth.

Learn more about the evidence:https://brainly.com/question/14240621

#SPJ1

The molar solubility of AgCl in 0.30 M [tex]NH_3[/tex]  is 1.7 × [tex]10^{-2}[/tex] M. Molar solubility depends on several factors such as the nature of the solute and solvent, temperature, and pressure.

What is Molar Solubility?

Molar solubility is the maximum amount of solute that can dissolve in a solvent to form a saturated solution at a given temperature and pressure, expressed in moles per liter (mol/L) or molarity (M). It is a measure of the solubility of a substance in a particular solvent.

NH3 is a weak base, we can assume that its concentration remains essentially constant after adding AgCl to the solution. Thus, we can substitute [Ag+] ≈ [Ag([tex]NH_3[/tex])2+] in the expression for Ksp, and simplify:

[tex]K_{sp} ≈ (K_f × [Ag^+] / [NH_3]_2) × ([Ag^+] ^+ x)[/tex]

[tex]K_{sp} = 1.8 × 10^{-10}[/tex]

Kf = 1.7 × 107

[[tex]NH_3[/tex]] = 0.30 M

To calculate [Ag+], we use the expression for [Ag([tex]NH_3[/tex])2+] and assume that the initial concentration of Ag+ equals the molar solubility of AgCl in pure water, which is given by the square root of Ksp for AgCl:

[tex][Ag^+] = (K_{sp})1/2 = 1.34 × 10^{-5}M[/tex]

Substituting the values for [Ag+] and Ksp in the expression for x, we obtain:

x = (-1.34 ×[tex]10^{-5}[/tex] + √((1.34 × 10-5)2 + 4 × 1.8 × 10-10 / (1.7 × 107))) / 2

x = 1.7 × [tex]10^{-2}[/tex] M

Learn more about Molar Solubility, visit;

https://brainly.com/question/28202068

#SPJ4

Xenon can be the central atom of a molecule by expanding beyond an octet of electrons

Define lectrons.

A negatively charged subatomic particle known as an electron can be free (not bound) or bound to an atom. One of the three main types of particles within an atom is an electron that is bonded to it; the other two are protons and neutrons. The nucleus of an atom is made up of electrons, protons, and neutrons together.

The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure. It is used to demonstrate how the electrons in a molecule are positioned around particular atoms. Electrons are shown as "dots" or, in the case of a bond, as a line connecting the two atoms.

Lewis Structure of XeF2 is linear(in attachment)

To learn more about Lewis Structure use:

https://brainly.com/question/20300458

#SPJ4

According to the stoichiometry of the reaction, for every 2 moles of S reacted, 3 moles of O2 are consumed. Thus, the limiting reactant will be S, and it will be completely consumed.

The balanced equation shows that 2 moles of S reacts with 3 moles of O2 to produce 2 moles of SO3. Thus, for every 2 moles of S that react, 2 moles of SO3 are produced.

Since there are 5 moles of S initially, it will react with 7.5 moles of O2 (since the ratio is 2:3 for S to O2), producing 5 moles of SO3.

Therefore, after the reaction, all of the S will be consumed, and there will be 0 moles of S left in the reaction vessel.

To know more about mole concept, click here:-

https://brainly.com/question/31123980

#SPJ11

The equivalence point pH of the solution formed by the titration of 50.00 mL of 0.150 M acetic acid using 25.00 mL of 0.300 M NaOH is (C) 7.00.

Acetic acid is a weak acid, and NaOH is a strong base. The reaction between them produces water and sodium acetate, which is a salt. At the equivalence point, the moles of acid and base are equal, and all the acid has been neutralized. The resulting solution contains only the salt and water. The pH of a solution containing only a salt and water can be calculated using the Kw expression. For sodium acetate, the anion acetate acts as a weak base, and the cation sodium has no acidic or basic properties. Therefore, the pH of the solution is equal to the pKa of acetic acid (4.76) plus log([NaOH]/[acetic acid]). Plugging in the values gives a pH of 7.00, which is option (C).

learn more about pH here:

https://brainly.com/question/15289741

#SPJ11

To calculate the equilibrium constant (K) for the given reaction at room temperature (typically taken as 25°C or 298K), we can use the following equation: K(room temp) = K(T) * exp(-ΔH°/RT)

K(T) is the equilibrium constant at temperature T

ΔH° is the standard enthalpy change for the reaction

R is the gas constant (8.314 J/K*mol)

T is the absolute temperature in Kelvin (298K for room temperature).

The exponential term in the equation takes into account the temperature dependence of the equilibrium constant. If ΔH° is positive, the equilibrium constant will decrease with increasing temperature, while if ΔH° is negative, the equilibrium constant will increase with increasing temperature.

Note that the values of ΔH° and K(T) for the given reaction would need to be provided in order to calculate K(room temp) using this equation.

learn more about enthalpy here:

https://brainly.com/question/16720480

#SPJ11

Required molar solubility of [tex]PbSO_4[/tex] in pure water is [tex]1.35 * 10^{-4}[/tex] M.

The amount of moles of a solute that may dissolve in one litre of solvent before the solution becomes saturated is known as its molar solubility. Moles per litre (M or mol/L) is the unit of measurement.

The solubility product constant expression for lead(II) sulfate is [tex]Ksp = [Pb ^{2+}][SO_4^{2-}][/tex]

Let's assume that x is the molar solubility of [tex]PbSO_4[/tex] in pure water, then we can write the equilibrium concentrations of [tex]Pb^{2+} \: and \: SO_4^{2-}[/tex]

as follows:

[tex][Pb_2^+] = x \\ [SO_4^{2-}] = x[/tex]

Substituting these concentrations into the Ksp expression gives:

Ksp = x² * x = x³

Now we can solve for x:

[tex]x^3 = Ksp = 1.82 × 10^{ -8} \\ x = (1.82 × 10^{ -8})^{(1/3)} \\ x = 1.35 × 10^{-4} M[/tex]

Therefore, the molar solubility of [tex]PbSO_4[/tex] in pure water is [tex]1.35 × 10^{-4} M[/tex]

The answer is option (C)

Learn more about molar solubility here,

https://brainly.com/question/28202068

#SPJ4

The relationship between Ka and Kb at 25°C for a conjugate acid-base pair is that they are inversely proportional to each other. This means that if Ka is high, then Kb will be low and vice versa.

This relationship is based on the fact that the Ka and Kb values represent the strengths of the acid and base in the pair, respectively. Therefore, as the acid gets stronger (higher Ka), the corresponding base gets weaker (lower Kb). Conversely, as the base gets stronger (higher Kb), the corresponding acid gets weaker (lower Ka). This relationship can be expressed mathematically using the equation Ka x Kb = Kw, where Kw is the ionization constant of water.
Hi! The relationship between Ka (acid dissociation constant) and Kb (base dissociation constant) for a conjugate acid-base pair at 25°C is given by the equation:
Ka × Kb = Kw
Here, Kw is the ion product constant of water, which is equal to 1.0 × 10^(-14) at 25°C. This equation shows that the product of the dissociation constants for the conjugate acid and base is constant at a specific temperature.

To know more about conjugate acid-base visit:

https://brainly.com/question/14832759

#SPJ11

The pH of the solution at the equivalence point will be 7.00.  A titration involves gradually adding a solution of a known concentration to a solution of the unknown concentration until the reaction between the two is complete.

What is Titration?

Titration is a technique used in analytical chemistry to determine the concentration of a substance in a solution by reacting it with a solution of known concentration.

In this titration, the strong acid HClO4 is reacting with the strong base LiOH. At the equivalence point, the number of moles of LiOH added will be equal to the number of moles of HClO4 present in the initial solution.

The balanced equation for the reaction between HClO4 and LiOH is:

HClO4 + LiOH → LiClO4 + H2O

Initially, we have 0.018 moles of HClO4 in 100.0 mL of solution:

moles of HClO4 = concentration × volume

moles of HClO4 = 0.18 mol/L × 0.100 L

moles of HClO4 = 0.018 mol

At the equivalence point, we will have added 0.27 mol/L × 0.06667 L = 0.018 moles of LiOH. These will react completely with the HClO4 to form LiClO4 and water.

The resulting solution will contain only the salt LiClO4, which is a neutral compound. Therefore, the pH of the solution at the equivalence point will be 7.00.

Learn more about Titration from the given link

https://brainly.com/question/186765

#SPJ4

In the structure of LSD, the most basic nitrogen atom is the one that is part of the aromatic ring system. This nitrogen atom is called the indole nitrogen and is significantly more basic than the other two nitrogen atoms in LSD.

What is Atom?

An atom is the smallest unit of matter that retains the properties of an element. It is composed of a nucleus, which contains positively charged protons and uncharged neutrons, and negatively charged electrons that orbit the nucleus. The number of protons in the nucleus of an atom determines its atomic number and the element to which it belongs.

The indole nitrogen in LSD is more basic because it is part of an aromatic ring system, which provides additional stability to the lone pair of electrons on the nitrogen atom. The lone pair of electrons on the indole nitrogen is delocalized within the ring system through resonance, which makes it less available for protonation and therefore less acidic. This results in a higher basicity of the nitrogen atom, which means it is more likely to accept a proton and form a positive ion.

Learn more about Atom, visit;

https://brainly.com/question/26952570

#SPJ4

The standard enthalpy change is  -75.8 kJ/mol.

S(s,rhombic) + 2CO (g) ===>>SO₂(g) + 2 C (s,graphite)

The standard enthalpy change (ΔH°) for the reaction using the formula:

ΔH° = ΣnΔHf°(products) - ΣmΔHf°(reactants)

where,

n and m are the stoichiometric coefficients of the products and reactants, respectively.

The standard heats of formation (ΔHf°) values for all the reactants and products involved in the reaction. The values are given in kJ/mol:

ΔHf°[S(s,rhombic)] = 0 kJ/mol

ΔHf°[CO(g)] = -110.5 kJ/mol

ΔHf°[SO₂(g)] = -296.8 kJ/mol

ΔHf°[C(s,graphite)] = 0 kJ/mol

Substituting the values we get:

ΔH° = [ΔHf°(SO₂) + 2ΔHf°(C)] - [ΔHf°(S) + 2ΔHf°(CO)]

ΔH° = [(-296.8 kJ/mol) + 2(0 kJ/mol)] - [(0 kJ/mol) + 2(-110.5 kJ/mol)]

ΔH° = -75.8 kJ/mol

To learn more about Enthalpy:

https://brainly.com/question/29853100

#SPJ4

The two possible starting materials for preparing an azo dye are: aniline and phenol, option B.

There are several azo dye categorization schemes, and there are numerous types of azo dyes. Disperse dyes, metal-complex dyes, reactive dyes, and substantive dyes are a few of the classes. Substantive dyes, often known as direct dyes, are used for cellulose-based fabrics like cotton. Non-electrostatic forces are used to bond the colours to the fabric. Another categorization for azo dyes is based on how many azo groups are present.

Organic substances with the functional group RN=NR′, in which R and R′ are typically aryl and substituted aryl groups, are known as azo dyes. They are a class of economically significant azo compounds, or substances that possess the C-N=N-C connection. Azo dyes are artificial colours that are not found in nature. The majority of azo dyes only have one azo group, however some dyes—referred to as "diazo dyes" and "triazo dyes," respectively—contain two or three azo groups. 60 to 70 percent of the colours used in the food and textile sectors are azo dyes. Azo dyes are frequently used to colour meals, leather goods, and fabrics. Azo pigments are a chemically related derivative of azo dyes that are insoluble in water and other solvents.

Learn more about Azo dye:

https://brainly.com/question/28240406

#SPJ4

Final temperature of the gold nugget is approximately 388.71 K after losing 4.85 kJ of heat to a snowbank, given its mass of 376 g and specific heat capacity of [tex]0.128 J g^{-1} °C^{-1}[/tex].

What is the final temperature of a gold nugget after losing 4.85 kJ of heat to a snowbank?

We can use the equation:

q = mcΔT

where q is the heat lost, m is the mass of the gold nugget, c is the specific heat capacity of gold, and ΔT is the change in temperature.

First, we need to convert the heat lost from kJ to J:

[tex]4.85 kJ = 4.85 \times 10^3 J[/tex]

Now we can rearrange the equation to solve for the final temperature:

ΔT = q / (mc)

[tex]\Delta T = \frac{4.85 \times 10^3 J}{376 g \times 0.128 J g^{-1} °C^{-1}}[/tex]

ΔT ≈ 9.29 °C (rounded to two decimal places)

To find the final temperature, we just need to subtract ΔT from the initial temperature:

Final Temperature = 398 K - 9.29 °C

Final Temperature ≈ 388.71 K

Therefore, the final temperature of the gold nugget is approximately 388.71 K.

To learn more about specific heat capacity, visit: https://brainly.com/question/27862577

#SPJ4

XeF₄ molecules will have a tetrahedral electron-domain geometry.

Molecules are the smallest particles of any substance that can still be identified as that particular substance. They are made up of two or more atoms that are chemically bonded together. All matter is made up of molecules, including gases, liquids and solids. Some molecules, such as water, are made up of only two atoms while others, such as proteins, are made up of hundreds of atoms. The properties of a molecule are determined by its structure, composition, and arrangement of its atoms. Molecules are constantly in motion and interact with each other, forming new molecules and breaking down existing ones. Many everyday substances are actually composed of molecules, such as sugar, salt, and carbon dioxide.

To learn more about molecules

brainly.com/question/26556885

#SPJ4

The organic product in this reaction would be propan-2-one (also known as acetone). This is because the Grignard reagent, which is formed when acetone (CH₃COCH₃) reacts with phenylmagnesium bromide, would be propan-2-ylmagnesium bromide.

Organic products are any food items that are grown without the use of synthetic fertilizers, pesticides, or other artificial substances. This type of food is grown and processed without the use of any artificial chemicals, preservatives, or other unnatural elements. Organic products are typically grown in an environment that is free from chemical inputs and is rich in natural minerals and nutrients. Organic products are typically found to be higher in vitamins and minerals, as well as significantly lower in toxins and other contaminants when compared to non-organic foods. Organic products are also typically produced in ways that are more sustainable and environmentally friendly than conventional farming methods. Organic products are a great way to ensure that you are putting the most nutritious and healthy food in your body.

Upon hydrolysis of the magnesium complex, this would produce propan-2-one (CH₃COCH₃) as the organic product.

To learn more about organic product
https://brainly.com/question/30584521
#SPJ4

Answer: We add small amount of chlorine to water to kill bacteria that cause infection.

Explanation: Adding chlorine to water is called chlorination. It is done to remove unwanted materials like pathogens viruses, and bacteria. the effectiveness of chlorine added depends upon the water temperature, water pH, turbidity, etc.

chlorine is available in two formulations, as a dry powder or pellet. chlorination is more effective at a high temperature and a low pH.

In order to draw the Lewis structure of a molecule, you must first determine the total number of available valence electrons by looking up the elements in the periodic table.

A molecule is the smallest unit of a compound that retains the chemical properties of that compound. It is composed of two or more atoms held together by chemical bonds. Molecules can range in size from the smallest, such as hydrogen (H₂), to the largest, such as proteins and DNA. Molecules are the building blocks of matter, which makes up all living things and the environment around us.

In order to draw the Lewis structure of a molecule, you must first determine the total number of available valence electrons by looking up the elements in the periodic table and calculating their total ionic charges. Then, use the total number of electrons needed for each element to be stable, based on the octet rule or VSEPR theory, to determine the steric number and total number of bonds by finding the difference between the number of needed and available electrons divided by two. Next, identify the central atom, which is the element with the greatest electronegativity or fewest valence electrons. Finally, arrange the number of bonds around the central atom to fulfill the stable number of electrons for each element.

To learn more about molecule

https://brainly.com/question/475709

#SPJ4

Complete Question:

Explain the steps in how to draw the Lewis structure of the molecule.

The Lewis structure of N2 shows a triple bond between the two nitrogen atoms. A triple bond consists of one sigma bond and two pi bonds. Each bond is formed by the sharing of two electrons. Therefore, in the Lewis structure of N2, there are a total of 6 bonding electrons.

To determine the number of bonding electrons in the Lewis structure of N2, follow these steps:

1. Identify the elements in the molecule: N2 consists of two nitrogen atoms (N).
2. Calculate the total number of valence electrons: Nitrogen has 5 valence electrons, and since there are two nitrogen atoms, the total valence electrons are 5 x 2 = 10.
3. Create the Lewis structure: Place the two nitrogen atoms next to each other and distribute the valence electrons as bonding and non-bonding pairs. To form a stable molecule, each nitrogen atom needs to have a complete octet (8 electrons).

The Lewis structure of N2 is:

    N ≡ N

In this structure, there is a triple bond between the two nitrogen atoms, which means there are 3 bonding pairs of electrons. Since each bonding pair consists of 2 electrons, the total number of bonding electrons in the Lewis structure of N2 is 3 x 2 = 6.

Your answer: There are 6 bonding electrons in the Lewis structure of N2.

To know more about lewis structure visit:

https://brainly.com/question/30259926

#SPJ11

The partial pressures of O2, CO2, and N2 in the vessel can be calculated using Dalton's Law of Partial Pressures. The partial pressures of O2, CO2, and N2 in the vessel are 67.2 atm, 12.8 atm, and 20.0 atm, respectively.

Dalton's Law of Partial Pressures states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of each individual gas. Each gas behaves independently of the other gases present and exerts its own pressure, known as its partial pressure. The total pressure of the mixture is the sum of the partial pressures of each gas.

First, we need to calculate the mole fractions of each gas:
X(O2) = 0.672/(0.672 + 0.128 + 0.200) = 0.672

X(CO2) = 0.128/(0.672 + 0.128 + 0.200) = 0.128

X(N2) = 0.200/(0.672 + 0.128 + 0.200) = 0.200

Next, we can use the ideal gas law to calculate the partial pressures:
P(O2) = X(O2) * P(total) = 0.672 * 100. atm = 67.2 atm

P(CO2) = X(CO2) * P(total) = 0.128 * 100. atm = 12.8 atm

P(N2) = X(N2) * P(total) = 0.200 * 100. atm = 20.0 atm

Therefore, the partial pressures of O2, CO2, and N2 in the vessel are 67.2 atm, 12.8 atm, and 20.0 atm, respectively.

To learn more about Dalton's Law, click here:
https://brainly.com/question/14119417

#SPJ11

The maximum number of electrons in the 4d subshell is 10.

The 4d subshell can hold a maximum of 10 electrons. This is because each orbital within the subshell can hold a maximum of 2 electrons, and there are a total of 5 orbitals in the 4d subshell.

The maximum number of electrons in the 4d subshell is 10.
Identify the subshell: In this case, it's the 4d subshell.
Determine the angular momentum quantum number (l): For a "d" subshell, l = 2.
Calculate the maximum number of electrons: Use the formula 2(2l + 1) to find the maximum number of electrons for a given subshell.

Applying the formula for the 4d subshell:

Maximum electrons = 2(2 × 2 + 1) = 2(5) = 10

So, the maximum number of electrons in the 4d subshell is 10.

Learn more about 4d subshell

brainly.com/question/9309492

#SPJ11

If temperature and pressure are held constant, the volume and number of moles of a gas are directly proportional.

This relationship is described by Avogadro's Law, which states that the volume of a gas is directly proportional to the number of moles when temperature and pressure are constant.

Mathematically, it is represented as V = k*n, where V is the volume, n is the number of moles, and k is a constant.

Summary: When temperature and pressure are constant, the volume and number of moles of a gas are directly proportional according to Avogadro's Law.

Learn more about temperature click here:

https://brainly.com/question/24746268

#SPJ11

Answer:

The correct choice is:

Human activities on land.

The passage of key information here suggests that the vast majority of pollutants in the oceans come from human activities that take place on land.

The other choices are not supported:

• Boats - Boats are a means of transporting things on/over the oceans, but they are not themselves the primary source of pollution. Pollution comes from spills, discharges, and accidents involving boats, but boats alone do not introduce the most pollutants.

• Oil tanker spills. - While oil tanker spills can be highly damaging, they are not responsible for introducing the bulk of pollutants into the oceans. There are many other types of pollutants and they come from a wide range of land-based human activities.

• Underground storage facilities. - There is no information in the context provided to support this as a major source of ocean pollution.

So based on the context, the correct choice is "Human activities on land."

Explanation: