which indicator is most appropriate for the titration of acetic acid with naoh? the ka for ch3co2h is 1.8×10−5. explain the reasoning for your answer:

Answer: combustion

Explanation:

Combustion reactions can be identified by looking at the reactants and the products.

Usually, the reactants will be a hydrocarbon and oxygen. And the products will be CO2 and H2O

The oxidizing agent in the reaction of alcohol dehydrogenase is NAD+..

In the alcohol dehydrogenase reaction:

CH3-CH2OH + NAD+ → CH3-CHO + NADH + H+

The oxidizing agent is the species that gains electrons and gets reduced during the reaction. In this case, it is:

b. NAD+

NAD+ gains electrons and is reduced to NADH, while ethanol (CH3-CH2OH) loses electrons and is oxidized to acetaldehyde (CH3-CHO). So, the oxidizing agent in this reaction is NAD+.

Learn more about dehydrogenase reaction

brainly.com/question/30793656

#SPJ11

Answer: 373 mL

Explanation:

Since there is no change in pressure, the formula: V / T = V / T can be used.

However, you must first convert the temperatures to Kelvin by adding 273 to them:

(19 + 273) = 292K and (90 + 273) = 363K.

Now, plug in: V / 292 = 464 / 363 → V = 373 mL :)

Answer:

40.72g of sulfuric acid are needed

Explanation:

When sulfuric acid, H₂SO₄, is neutralized by lead (IV) hydroxide, Pb(OH)₄, Lead (IV) sulfate, Pb(SO₄)₂ and water as follows:

2 H₂SO₄ + Pb(OH)₄ → Pb(SO₄)₂ + 4H₂O

To solve this question we must find the moles of 57.18g of Pb(SO₄)₂. As 2 moles of H₂SO₄ produce 1mol Pb(SO₄)₂ we can find the moles of H₂SO₄ and its mass as follows:

Moles Pb(SO₄)₂ -Molar mass: 275.23 g/mol-

57.18g * (1mol / 275.23g) = 0.2078 moles Pb(SO₄)₂

Moles H₂SO₄:

0.2078 moles Pb(SO₄)₂ * (2mol H₂SO₄ / 1mol Pb(SO₄)₂) = 0.4155 moles H₂SO₄

Mass H₂SO₄ -Molar mass: 98g/mol-

0.4155 moles H₂SO₄ * (98g / mol) =

I think its Thermal Energy

Answer:

\(C=2.45\frac{J}{g\°C}\)

Explanation:

Hello there!

In this case, since the thermodynamic definition of heat in terms of mass, specific heat and temperatures is given by:

\(Q=mC(T_2-T_1)\)

We are to calculate the specific heat of the ethanol as shown below:

\(C=\frac{Q}{m(T_2-T_1)}\)

Thus, by plugging it the given data we can obtain:

\(C=\frac{4650J}{250.0g(29.6-22.00\°C)} \\\\C=2.45\frac{J}{g\°C}\)

Regards!

Answer:

59 Sc 0

21

tiene numero atomico 21, porque es neutro, y tiene numero masico 59 porque 21 + 28 =59

The temperature of 2.0 L of water is 42 °C removing thermal energy from the water cause the temperature of the water to increase to 50 °C.

Thermal energy is defined as the internal energy of a system that controls its temperature. Thermal energy is a type of kinetic energy, which is energy brought on by motion, and is brought on by the motion of particles. Solar power plants generate energy through the use of thermal energy.

Q = c × m × Δ T

ΔT = The system's temperature has changed.

The three different processes that lead to heat transmission are described here. When substances are heated, their volume rises, and when they are cooled, it falls.

Thus, the temperature of 2.0 L of water is 42 °C removing thermal energy from the water cause the temperature of the water to increase to 50 °C.

To learn more about thermal energy, refer to the link below:

https://brainly.com/question/11278589

#SPJ1

HCl is an acid, \(C_5H_5N\) is a base, Cl is an acid, and \(HC_5H_5N\) is an acid.

Acid-base reactions are the chemical reactions that occur when acids and bases are mixed together.

The reaction of acid and base is considered a neutralization reaction. In this chemical reaction, the acid reacts with a base to form salt and water.

Hence, HCl is an acid, \(C_5H_5N\) is a base, Cl is an acid, and \(HC_5H_5N\) is an acid.

Learn more about the acid-base reaction here:

brainly.com/question/15220646

#SPJ5

After considering the given the data we conclude that the  ionization energy generally increases from left to right across a period. Therefore, the element with the highest ionization energy in period 3 would be located on the right side of the periodic table.

We can also see from the search results that helium has the highest ionization energy of all the elements, while sodium has the lowest ionization energy in period 3. Therefore, we can conclude that the element with the highest ionization energy in period 3 is located to the right of sodium.
Based on the periodic table, we can see that the elements in period 3 are:
Sodium (Na)
Magnesium (Mg)
Aluminum (Al)
Silicon (Si)
Phosphorus (P)
Sulfur (S)
Chlorine (Cl)
Argon (Ar)
Therefore, the element with the highest ionization energy in period 3 is most likely Argon (Ar), which is located on the far right side of the period.
In summary, the element with the highest ionization energy in period 3 is most likely Argon (Ar).
To learn more about periodic table
https://brainly.com/question/25916838
#SPJ4

On a Space shuttle, LiOH Is used to absorb CO2 to produce LiHCO3

LiOH + CO2 === LiHCO3

Now

58g of CO2 produces 79.3g of LiHCO3

This is the Actual Yield.

Recall

% Yield = Actual yield/Theoretical yield x100

NOW

We have to find the theoretical yield

From the equation of reaction

Now 58g of CO2 reacted

Converting to Moles

mole = Mass/Molar Mass

Molar mass of CO2=44g/mol

Mole = 58/44

=1.318moles of CO2

From the equation Of Reaction.

1 mole of CO2 reacts and Produces 1 mole of LiHCO3

Since their Mole ratio is 1:1

An Equal amount of LiHCO3 will be produced.

So 1.318moles of LiHCO3 will be produced.

Convert this mole to Mass

Mole =Mass/Molar Mass

Mass = Mole x Molar Mas

Molar Mass of LiHCO3 =68g/mol

Mass = 1.318 x 68

Mass = 89.62g.

This is the theoretical Yield.

% yield = 79.3/89.62 x 100

= 88.48%.

N3H is the correct answer.

N3H is the molecular formula of the smallest neutral compound of nitrogen and hydrogen.

an expression that lists the quantity and kind of atoms that make up a substance's molecules.

To learn more about molecular formula visit:

https://brainly.com/question/14425592

#SPJ4

The Phanerozoic Eon start 451 million years ago (MYA) at the end of the Precambrian Eon when attrition ended and sediments became rocks.

The most consequential difference between Precambrian and Paleozoic life forms is that Precambrian life forms had pappy body parts and Paleozoic life forms had hard body parts. What is the difference between animal life in the MesozoicThe Precambrian is so named because it introduces the Cambrian, the first period of the Phanerozoic Eon, which is named after Cambria, the Latinised name for grain, where rocks from this age were first studied. The Precambrian report for 88% of the Earth's geologic time. The rocks in this Eon are down into three Eras: the Paleozoic, the Mesozoic, and, the Cenozoic

So we can conclude that the Precambrian was the "Age of Early Life." Through the Precambrian, the mainland formed and our modern atmosphere developed.

Learn more about Precambrian  here: https://brainly.com/question/1352133

#SPJ1

Answer:

because the ions arent firmly held in place!

Explanation:

The question is incomplete but i will try to offer as much help as i can.

Answer:

See explanation

Explanation:

The electron was discovered by J.J Thompson. His model of the atom was called the plum-pudding model of the atom.

He discovered that cathode rays being negatively charged particles were deflected by a magnet in just the same way as moving, negative electrically charged particles.

Similarly, in an electric field, they are deflected towards the positive plate of the electrostatic field which shows that they are negatively charged.

Answer:

Um did you post something I don't see nothing

Explanation:

During an elimination reaction in organic chemistry, a new double bond (π bond) is formed, resulting in the creation of an alkene functional group. This process involves the removal of a leaving group and the adjacent hydrogen atom from a molecule, resulting in the formation of a double bond between the two adjacent carbon atoms.

In elimination reactions, a strong base or acid is often used to abstract the proton from the adjacent carbon atom, generating a carbanion intermediate. The leaving group is then expelled from the molecule, and the carbanion intermediate undergoes a rearrangement to form a more stable carbocation. Finally, the base or another molecule acts as a nucleophile, capturing a proton from the carbocation to form the double bond. This newly formed double bond represents the alkene functional group and is characteristic of elimination reactions in organic chemistry.

Learn more about Organic chemistry here ; brainly.com/question/14623424

#SPJ11

Answer:

I say 20 is ur best option

relationship between work pressure and volume can be stated by this formula;

W=PΔV

as we know gas is expanding so it means the work is done by the system

which is shown by a negative sign

W= 138.1 j x 1 L atm / 101.3 j

   = -  1.36 L atm

let's convert torr into atm

P = 783 torr X ( 1 atm/ 760 torr)

    = 1.03 atm

W = -PΔV

- 1.36 L atm = - 1.03 atm x ΔV

ΔV = 1.36 L atm / 1.03 atm

     = 1.32 L  

ΔV = \(V_{2}\) - \(V_{1}\)

      = \(V_{2}\) - 0.0607 L

\(V_{2}\) = 1.32 L  +  0.0607 L

       = 1.38 L

the final volume of gas is 1.38 L

learn more work about here;

https://brainly.com/question/25573309

#SPJ4

The Bragg angle of the (101) planes decreases with the amount of shear.

When the material with a tetragonal crystal structure undergoes shear, the angle between the [001] and [100] directions changes from 90° to 60°, with a shear vector along [100]. To analyze the change in the Bragg angle of the (101) planes under this shear, we need to consider the effect of shear on the lattice parameters and the orientation of the planes.

The lattice parameters {2, 2, 4, 90°, 90°, 90°} represent the dimensions and angles of the tetragonal crystal structure. The (101) planes are equivalent to the (101) planes at zero shear. However, due to the shearing process, the lattice parameters change. As the shear vector is along [100], the length along the [100] direction decreases, while the length along the [001] direction remains unchanged.

The Bragg angle is determined by the relationship between the lattice spacing of the planes and the incident X-ray wavelength. As the lattice parameters change, the lattice spacing of the (101) planes also changes. The decrease in the length along the [100] direction leads to a decrease in the lattice spacing of the (101) planes, resulting in a decrease in the Bragg angle.

To plot the Bragg angle vs. shear angle, we need to vary the shear angle and calculate the corresponding Bragg angle for each shear angle. The shear angle represents the change in the angle between the [001] and [100] directions, and the Bragg angle is calculated based on the lattice spacing and the incident X-ray wavelength.

Learn more about: Tetragonal crystal

brainly.com/question/32154280

#SPJ11

The attractive force (intermolecular force) between these two molecules has most likely been produced by dipole-dipole interactions.

The correct option is B.

Intermolecular forces are forces of attraction or repulsion that act between atoms and other kinds of nearby particles, such as atoms or ions, to mediate interactions between molecules.

Some intermolecular forces are:

Considering the given molecules in the diagram:

Each molecule is made up of two distinct components, and as a result, each molecule has a constant bond dipole.

The attractive forces are dipole-dipole attractions because the dipoles do not cancel. The dipole-dipole attractions are substantially stronger than the dipole-induced dipole and London dispersion forces.

Learn more about dipole-dipole attractions at: https://brainly.com/question/29212710

#SPJ1

Without the concentration information, it is not possible to determine.

In order to determine the amount of unknown liquid present in a solution containing 1 kg of water, we need additional information. Specifically, we need to know the concentration of the unknown liquid in her experiment.

Concentration refers to the amount of solute (in this case, the unknown liquid) dissolved in a given amount of solvent (water). It is typically expressed as a ratio or percentage. Without knowing the concentration, we cannot accurately calculate the amount of the unknown liquid in the solution.

If you have the concentration information, you can use it to calculate the mass or volume of the unknown liquid in the solution. For example, if the concentration is given as a percentage, you can multiply it by the mass of the solution (1 kg) to obtain the mass of the unknown liquid.

It is important to note that the density and other properties of the unknown liquid may affect the volume and mass calculations, so those factors should also be taken into account for a precise determination.

Learn more about Unknown liquid

brainly.com/question/27398633

#SPJ11

When the volume of the carbon dioxide gas is decreased from 3.3 liters to 2.8 liters, the gas would exert a pressure of approximately 294 kPa.

According to Boyle's Law, the pressure and volume of a gas are inversely proportional at constant temperature. To determine the pressure of the carbon dioxide gas when the volume is decreased to 2.8 liters, we can use the equation:

P1 * V1 = P2 * V2

Where:

P1 is the initial pressure (250 kPa)

V1 is the initial volume (3.3 liters)

P2 is the final pressure (to be determined)

V2 is the final volume (2.8 liters)

Plugging in the given values, we have:

(250 kPa) * (3.3 liters) = P2 * (2.8 liters)

To solve for P2, we can rearrange the equation:

P2 = (250 kPa * 3.3 liters) / (2.8 liters)

P2 ≈ 294 kPa

This means that as the volume of the gas decreases, the pressure increases, consistent with Boyle's Law. The relationship between pressure and volume in gases is important in various applications, such as in understanding the behavior of gases in containers and the principles behind gas compression and expansion.

for more such questions on volume

https://brainly.com/question/29796637

#SPJ11

Answer:

The tissues decompose at a slower rate at lower temperatures.

Explanation:

This is my best guess but I think answer is tissue decompose slower rate at low temperature. This is why we in medicine we store specimens at very low temperature so we can do research on it at a later time but they eventually go bad. Low temperature slow down enzymes and proteins thus breakdown is slower rate.

The conversion factor from electrino to coulombs is 1.60×10−19.

The term charge refers to a particle that is positively or negatively charged. The electron is a particle that is negatively charged. One of the popular units that could be used when dealing with electrons is the electrinos.

We know that;

1 electrino = 1.60×10−19 C

It then follows that the conversion factor from electrino to coulombs is 1.60×10−19.

Learn more about conversion factor:https://brainly.com/question/28366871

#SPJ1

Answer:

A

Explanation:

2 atoms of aluminum, 3 atoms of sulfur

Aluminum = Al

Sulfer = S

i just took the test

The formula for 2 atoms of Al and 3 atoms of S is Al₂S₃  and is named  Aluminium Sulphide.

Al has atomic no. =13, S has atomic no.=16

So the valencies of the given elements are

Al⁺³ and S⁻² to attain the noble gas configuration.

Al⁺³↘ ↙S⁻³

                  Al₂S₃

Cross multiply the valancies for the formation of molecular formula.

Hence, the formula is Al₂S₃.

Learn more about chemical formulas.

https://brainly.com/question/11995171  

#SPJ2

The particle with the highest density will settle out first and sink to the bottom.

The settling of particles in a suspension depends on their density and size. In general, particles with a higher density will settle out of suspension faster and sink to the bottom of the container. This is because the force of gravity acting on the particles is proportional to their mass, and their mass is proportional to their density. Hence, particles with a higher density will experience a greater force of gravity and will settle out of suspension faster.

So, in conclusion, in a 100 ml graduated cylinder, the particle with the highest density will settle out of suspension first and sink to the bottom due to the force of gravity acting on the particles, which is proportional to their mass and density.

To learn more about suspension, visit:

https://brainly.com/question/21110685#

#SPJ11