Alveolar air (a mixture of nitrogen, oxygen, and carbon dioxide) has a total pressure of 0.998 atm. If the partial pressure of oxygen gas is 0.198 atm and the partial pressure of nitrogen gas is 0.770 atm, what is the partial pressure of carbon dioxide in millimeters of mercury?

1. Based on the information provided, a weak acid with a pKa close to the ideal pH of 5.5 would be the best buffer for Xylanase. Acetic acid (CH3COOH) can be utilised as the weak acid component of the buffer since it has a pKa of 4.76, which is close to the ideal pH.

Acetate ion (CH3COO-), its conjugate base, can also be utilised as a buffering agent. Since Xylanase prefers an acidic pH (below 7), we would anticipate the buffer to contain more acid than base.

2. The pH of the buffer would drop if 0.1 M HCl was introduced because the weak acid would arise when the H+ ions from the HCl react with the conjugate base in the buffer.

Instead, if 0.1 M NaOH was added, the pH would rise as the weak acid in the buffer reacts with the NaOH's OH- ions to form the conjugate base. The capacity of the buffer and the quantity of HCl or NaOH injected, however, would determine how much the pH changed.

3. It would take more HCl to raise the pH by one unit in the buffer in question 1 since it contains a weak acid and its conjugate base. This is due to the fact that the conjugate acid might be created when the weak acid component of the buffer reacts with extra H+ ions to limit significant pH shifts.

On the other hand, if NaOH were to be added to the buffer, the buffer's acid component would be consumed, causing a greater pH change.

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For the bond formation rule to be met, the octet rule, which calls for 8 electrons in the outermost shell, must be present.

What is octet rule?

According to the "octet rule," an atom is the most stable when it has a complete valence (outer) shell (typically 8 electrons, but hydrogen and helium only have two). As a result, the atoms involved in covalent (nonmetal to nonmetal) bonding often have eight valence electrons following the bond.

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The pH of the solution is 1.954. The pH scale ranges from 0 to 14, with 7 being neutral.

The pH of a solution is defined as the negative logarithm (base 10) of the concentration of hydrogen ions (H+) in the solution. Since HNO3 is a strong acid, it is almost completely dissociated in water, so the concentration of H+ ions in the solution is equal to the concentration of HNO3.

We first need to determine the concentration of nitric acid (HNO3) that has formed from the reaction of NO2 with water.

The molar mass of NO2 is 46.006 g/mol, so the number of moles of NO2 dissolved in 1.00 L of water is

4.18 mg / 46.006 g/mol = 0.0910 mol.

Since the reaction between NO2 and water is:

NO2 (aq) + H2O(l) → HNO3 (aq) + NO(g)

The number of moles of HNO3 formed is equal to the number of moles of NO2 present, which is 0.0910 mol.

So, the concentration of HNO3 is 0.0910 mol / 1.00 L = 0.0910 M.

pH = -log(0.0910) =1.954

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The type of reaction most likely to occur when forming polymers from monomers containing carbon-carbon double or triple bonds is an **addition reaction**.

An addition reaction is a chemical process in which two or more molecules combine to form a single, larger molecule. In the context of polymerization, monomers containing carbon-carbon double or triple bonds, such as alkenes or alkynes, can undergo addition reactions to form polymers. This process typically involves the breaking of the double or triple bond, allowing for the formation of new single bonds between the monomers, which results in the creation of the polymer chain. **Hydration**, **condensation**, and **oxidation-reduction** reactions are other types of chemical reactions that can occur, but they are not the primary mechanism for forming polymers in the case of monomers with carbon-carbon double or triple bonds.

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Lavoisier believed in the caloric theory.

Caloric was a self-repelling fragment that adhered to matter. The heat was a mysterious fluid stored in the matter and liberate during burning and chemical reactions. Heat walk to cold. Hot objects had caloric and cold had little caloric.

The caloric theory is a disused scientific theory that heat consists of a self-resistant fluid called caloric that flows from hotter bodies to colder bodies. Caloric was also the notion of a weightless gas that could pass in and out of pores in solids and liquids.

So we can conclude that Caloric theory The caloric theory is an outworn scientific theory that heat consists of a fluid called caloric.

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The diagrams show the arrangements of carbon atoms in diamond and in graphite. The diamond is sp³ hybridized and have tetrahedral shape while graphite is sp² hybridized and is hexagonal ring shaped structure.

Diamond containing carbon atoms are strongly bonded chemically with other four carbons. The carbon atoms are sp³ hybridized and make percept tetrahedral shape. Diamond used in jewelry makin g. they are used by surgeons in the cataract surgery. diamond is hard, used for cutting or drilling rock.

Graphite containing carbon atom are form the weak bond with weak forces. the carbon are sp² hybridized and make a hexagonal ring shape structure. The force in graphite in weak that makes it useful material.  it is used as lubricant. it is used in pencil. used in making electrodes.

The diagrams show the arrangements of carbon atoms in diamond and in graphite. The diamond is sp³ hybridized and have tetrahedral shape while graphite is sp² hybridized and is hexagonal ring shaped structure.

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Answer:

Noble gases are nonreactive, nonmetallic elements in group 18 of the periodic table. They have eight valence electrons, which fill their outer energy level.

Explanation:

Answer:

Noble gases are nonreactive, nonmetallic elements in group 18 of the periodic table. Noble gases are the least reactive of all elements. That's because they have eight valence electrons, which fill their outer energy level.

While naming a compound, the less electronegative element is written first in the formula.

Generally, the less electronegative element is written first while writing the formula, though there are a few exceptions. Basically, carbon is always written first in a formula and hydrogen is after nitrogen in a formula such as NH₃. The common order of common non-metals in binary compound formulas is C, P, N, H, S, I, Br, Cl, O, F.

Generally, electronegativity is defined as a chemical property which describes the tendency of an atom or a functional group to attract electrons toward itself. The electronegativity of an atom is basically affected by both its atomic number and the distance that its valence electrons reside from the charged nuclei. And the more electronegative element is written in the first name of the compound.

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Answer:

550 K

Explanation:

Given the following data;

Original Volume, V1 = 20mL

Original Temperature, T1 = 200K

New Temperature, V2 = 55mL

To find new temperature T2, we would use Charles' law.

Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles is given by;

\( VT = K\)

\( \frac{V1}{T1} = \frac{V2}{T2}\)

Making T2 the subject of formula, we have;

\(T_{2} = \frac{V2}{V1} * T_{1}\\\)

Substituting into the equation;

\(T_{2} = \frac{55}{20} * 200\\T_{2} = \frac{11000}{20}\\T_{2} = 550K\)

Therefore, the new temperature is 550K.

Answer:

The answer is Silver

Numbers of Protons in Silver: The element Silver (Symbol Ag) has the Atomic Number of 47. Any atom that contains exactly 47 protons in its nucleus is an atom of silver.

Hope this Helps!

Answer: both

Explanation:

The balanced chemical equation for the dissolution of AgI in NH3 is:

AgI(s) + 2 NH3(aq) ⇌ [Ag(NH3)2]+(aq) + I-(aq)

The equilibrium constant expression for the above reaction is given by:

Kf = [Ag(NH3)2]+/[AgI][NH3]^2

where [Ag(NH3)2]+, [AgI], and [NH3] are the molar concentrations of the corresponding species at equilibrium.

Since we want to find the solubility of AgI in 3.0 M NH3, we can assume that the concentration of NH3 remains constant at 3.0 M, and we can use the Kf value to calculate the concentration of [Ag(NH3)2]+ at equilibrium.

First, we need to calculate the value of [AgI] at equilibrium. Since the initial concentration of AgI is zero (solid), the solubility of AgI in NH3 can be represented as "x", and the concentration of [I-] can be assumed to be equal to "x" (since the stoichiometric coefficient of I- is 1 in the above equation).

Then, using the Ksp expression for AgI, we get:

Ksp = [Ag+][I-] = x * x = 8.3 x 10^-17

Solving for "x", we get:

x = sqrt(Ksp) = sqrt(8.3 x 10^-17) = 9.11 x 10^-9 M

Now, we can use the Kf value to calculate the concentration of [Ag(NH3)2]+ at equilibrium:

Kf = [Ag(NH3)2]+/[AgI][NH3]^2

[Ag(NH3)2]+ = Kf * [AgI] * [NH3]^2

[Ag(NH3)2]+ = (1.7 x 10^7) * (9.11 x 10^-9) * (3.0)^2

[Ag(NH3)2]+ = 1.39 x 10^-6 M

Therefore, the solubility of AgI in 3.0 M NH3 is 9.11 x 10^-9 M, and the concentration of [Ag(NH3)2]+ at equilibrium is 1.39 x 10^-6 M.

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Answer:

A. Which months are the most popular for students to have birthdays?

Hope you could understand.

If you have any query, feel free to ask.

The ratio strength (w/v) of the diluted solution is 1:1000 or 0.1% w/v.

The original solution is a 1:20 w/v solution, which means that for every 1 gram of solute, there is 20 mL of solution. Using this information, we can calculate the amount of solute in the original 50 mL of solution:

1 gram / 20 mL = x grams / 50 mL

x = 2.5 grams of solute

When this 50 mL of solution is diluted to 1000 mL, the amount of solute remains the same, but the volume of the solution increases. The new ratio can be calculated by dividing the weight of the solute by the volume of the solution:

2.5 grams / 1000 mL = 0.0025 grams/mL

Converting this to a percentage w/v:

0.0025 grams/mL x 100 = 0.25% w/v

Therefore, the ratio strength is 1:1000 or 0.1% w/v.

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Answer:

You can see in the above illustration of the periodic table that N is in Period 4, Group 5A, and p-block. Before reaching N, you will pass through the atomic orbitals 1s, 2s, and 2p. The electron configuration of N3- is N3-: 1s22s22p6 .

Explanation:

The mass of carbon (C) in the original 1.2359 g sample of the compound is 0.6913 g. The mass of nitrogen (N) in the original sample is 0.3566 g, and the mass of oxygen (O) is 0.2031 g.

To determine the mass of carbon in the sample, we subtract the masses of hydrogen and oxygen from the total mass of the sample:

Mass of C = Total mass of sample - Mass of H - Mass of O

Mass of C = 1.2359 g - 0.0648 g - 2.241 g (CO₂)

Mass of C = 0.6913

Regarding the analysis of nitrogen content, the mass percent of nitrogen is given as 28.84%. This percentage indicates that nitrogen accounts for 28.84% of the total mass of the compound.

To determine the mass of nitrogen in the sample, we multiply the mass percent by the total mass of the sample:

Mass of N = Mass percent of N × Total mass of sample

Mass of N = 28.84% × 1.2359 g

Mass of N = 0.3566 g

mass of Og of sample (g of H+g of C+ g of

N)

mass of O = 1.2359 (0.0648+0.6116 +0.3564)

Mass of O = 0.2031 g

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the complete question is:

In the combustion analysis of a compound containing carbon, hydrogen, nitrogen, and oxygen, a 1.2359 g sample is burned with excess oxygen, producing 2.241 g of CO₂. The analysis also reveals 0.0648 g of hydrogen in the sample. What is the mass, in grams, of carbon, nitrogen, and oxygen in the original 1.2359 g sample? Furthermore, when the compound is solely analyzed for nitrogen content, the mass percent of nitrogen is found to be 28.84%. What is the mass, in grams, of nitrogen and oxygen in the original sample?

Answer:

[Au] = 0.171 M

Explanation:

For this question, we assume the rock is 100 % gold.

First of all, we determine the moles of gold

67.3 g . 1mol/ 196.97g = 0.342 moles

Molar concentration is defined as the moles of solute, contained in 1L of solution.

Our solution volume is 2L.

M = 0.342 mol / 2L = 0.171

Molar concentration, also called molarity of solution is the most typical unit of concentration.

Answer:

idrk im sorry and iknow this didnt help bt im sorry

Explanation:

Answer:

3.02 moles

Explanation:

Converted using mole calculator.

Answer:

\(\boxed {\boxed {\sf 3.02 \ mol \ Ag}}\)

Explanation:

We want to convert grams of silver to moles of silver. We can do this in 2 steps.

We can convert grams to moles using the molar mass. It tells us the mass of 1 mole of a substance.

This is a value found on the Periodic Table. It is the same value as the atomic mass, but the units are grams per mole (g/mol) instead of atomic mass units (amu). Look up silver's molar mass.

Let's make a ratio using the molar mass.

\(\frac{107.868 \ g\ Ag}{ 1 \ mol \ Ag}\)

Since we are converting 326 grams to moles, we multiply by that value.

\(326 \ g\ Ag*\frac{107.868 \ g\ Ag}{ 1 \ mol \ Ag}\)

Flip the ratio so the units of grams of silver cancel.

\(326 \ g\ Ag*\frac{ 1 \ mol \ Ag}{107.868 \ g\ Ag}\)

\(326*\frac{ 1 \ mol \ Ag}{107.868}\)

\(\frac{ 326}{107.868} \ mol \ Ag\)

\(3.02221233359 \ mol \ Ag\)

The original measurement of mass (326 grams) has 3 significant figures, so our answer must have the same.

For the number we found, that is the hundredth place. The 2 in the thousandth place (3.02221233359) tells us to leave the 2 in the hundredth place.

\(3.02 \ mol \ Ag\)

A silver watchband with a mass of 326 grams is equal to 3.02 moles of silver.

Answer:

The Correct IUPAC name is H3C - CH (CH3) - CH (C2H5) - (CH2)2 - CH3 Class 11

Explanation:

yes searched np is maybe right i not 100% sure i 50% is it right >:) tell if u got it right >:D

Answer:

4-ethyl-6-methyl-3-heptene

Explanation:

Longest chain is seven long so it is heptane

But there is a double bond, so that becomes heptene

The double bound starts on the third carbon, so it is 3-heptene (this tells us where the double bond is)

Now we just got to do the substituents!

There is a ethyl group of the fourth carbon and then a methyl group on the sixth!

Ergo, 4-ethyl-6-methyl-3-heptene

Answer:

750 m

Explanation:

Hi there!

We're given that:

⇒ The speed of the car is 25 meters/second

⇒ The car travelled a certain distance in 30 seconds

To calculate distance, use the formula:

Distance = Speed × Time

Distance = 25 × 30

Distance = 750

Therefore, the car travelled a distance of 750 m in 30 seconds.

I hope this helps!

Answer:

\(\boxed {\boxed {\sf 750 \ meters}}\)

Explanation:

We are asked to find the distance a car traveled. Distance is the product of speed and time.

\(d= s \times t\)

The speed of the car is 25 meters per second. The time is 30 seconds.

\(d= 25 \ m/s * 30 \ s\)

The units of seconds cancel each other out.

\(d= 25 \ m * 30\)

\(d= 750 \ m\)

The car traveled 750 meters in 30 seconds at a speed of 25 meters per second.

The energy of an electrostatic interaction between two charged atoms depends on the charges on the atoms, the distance between them, and the dielectric constant of the solvent.

The strength of a weak acid, represented by its acid dissociation constant (Ka), relies on the strength of the electrostatic interaction between a negatively charged carboxylic acid group and a proton. The dielectric constant of the solvent also plays a significant role in determining the pKa value for weak acids.


The energy of an electrostatic interaction between two charged atoms is influenced by several factors. Firstly, the charges on the atoms themselves play a crucial role in determining the strength of the interaction. If the charges on the atoms are higher, the electrostatic interaction will be stronger. Secondly, the distance between the charged atoms also affects the energy of the interaction. As the distance between the atoms decreases, the electrostatic interaction becomes stronger. Lastly, the dielectric constant of the solvent has a significant influence on the energy of the electrostatic interaction. The dielectric constant of the solvent affects this interaction by either enhancing or reducing the electrostatic forces involved. Consequently, the pKa value for weak acids is greatly influenced by the dielectric constant of the solvent.

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The answer would be in an equilibrium or closed system.

Because there will be no change in the given chemical reaction. Even if you want to add the catalyst in the given closed system there would be equal amount of sharing in both forward and backward reactions and hence no changing.

Equilibrium can only be acquired in a closed system where the reaction takes place in a closed holder or a vessel and nothing is lost i.e., reactants or products are lost.

So, in conclusion the phase changes in many substances are reversible and a phase change just like a chemical reaction may takes place in an equilibrium, closed system.

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Answer:

1) BaCl2 + Na2O = BaO + 2NaCl

2) C4H8 + 6O2 = 4CO2 + 4H2O

3) MgCO3 + 2K = K2CO3 + Mg

4) N2 + 3F2 = 2NF3

Answer:

The gases which dissolve in water by diffusion are carbon dioxide and oxygen.

Explanation:

HAVE A GOOD DAY!

The correct answer is d. HAc + H3O+ ⇌ Ac- + H2O.

When NaOH is added to a buffer solution containing acetic acid (HAc) and its conjugate base (Ac-), the hydroxide ions (OH-) from NaOH react with the hydronium ions (H3O+) from the acetic acid. This reaction forms water (H2O) and the acetate ion (Ac-), shifting the equilibrium towards the acetate ion and decreasing the concentration of acetic acid. This maintains the pH of the buffer solution by neutralizing the added base and preventing significant changes in acidity.

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Answer:

Coefficient = 1.58

Exponent = - 5

Explanation:

pH = 2.95

Molar concentration = 0.0796M

Ka = [H+]^2 / [HA]

Ka = [H+]^2 / 0.0796

Therefore ;

[H+] = 10^-2.95

[H+] = 0.0011220 = 1.122 × 10^-3

Ka = [H+] / molar concentration

Ka = [1.122 × 10^-3]^2 / 0.0796

Ka = (1.258884 × 10^-6) / 0.0796

Ka = 15.815 × 10^-6

Ka = 1.58 × 10^-5

Coefficient = 1.58

Exponent = - 5

Answer:

3.07g of NaCl are present in the solution

Explanation:

A 1.05 M NaCl solution means you have 1.05 moles of NaCl per liter of solution. In 50.0mL = 0.0500L you will have:

0.0500L * (1.05mol / L) = 0.0525 moles of NaCl.

To convert these moles to grams you must use molar mass of the compound (Molar mass NaCl: 58.44g/mol). In 0.0525 moles of NaCl you will have:

0.0525mol * (58.44g / mol) =

Answer:

The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore they rarely react with other elements since they are already stable

Answer:

reaction rate∝(collisions/time)

Answer:

a,c,d for knewton

Explanation: