Can someone please check my answer??!!!

3-ethyl-4,5-dimethyl-octane

Answer:

25

Explanation:

i think not sure ..................

Answer: potential energy

Explanation: Even when an object is sitting still, it has energy stored inside that can be turned into kinetic energy (motion).

The volume of methanol necessary to prepare the antifreeze good for antifreeze solution is 3.2 L

M₁V₁ = M₂V₂

Where

The volume of the methanol necessary to prepare the solution can be obtained as illustrated below:

M₁V₁ = M₂V₂

24.7 × V₁ = 10 × 8

24.7 × V₁= 80

Divide both side by 24.7

V₁ = 80 / 24.7

V₁ = 3.2 L

Thus, the volume of methanol necessary to prepare the antifreeze good for antifreeze solution is 3.2 L

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The crude oil fractions, ranked in order from lowest to highest boiling point, are gases, gasoline, naphtha, kerosene, diesel, and residual fuel oil. These fractions are obtained through the distillation process in an oil refinery. The boiling point of each fraction increases as the molecular weight and complexity of the hydrocarbon compounds increase.

During the distillation process in an oil refinery, crude oil is heated in a distillation tower, allowing it to separate into different fractions based on their boiling points. The fractions with the lowest boiling points are the gases, which include methane, ethane, propane, and butane. These gases are typically used as fuel sources or for other industrial purposes.

Next in the order of boiling points is gasoline, a mixture of hydrocarbons with relatively low boiling points. Gasoline is commonly used as a fuel for automobiles. It has a higher boiling point compared to gases but lower than the subsequent fractions.

Naphtha, with a slightly higher boiling point than gasoline, is another fraction obtained from the distillation of crude oil. It is used as a feedstock for petrochemical processes, such as the production of plastics and synthetic fibers.

Kerosene, also known as jet fuel, has a higher boiling point than naphtha. It is commonly used as aviation fuel but also finds applications in heating and lighting.

Diesel, with a higher boiling point than kerosene, is a fuel used in diesel engines for various applications, including automobiles, trucks, and generators.

Lastly, residual fuel oil, sometimes referred to as heavy fuel oil, has the highest boiling point among the fractions. It is a dense, viscous liquid used as a fuel for power generation in large industrial settings.

In summary, the order of the crude oil fractions from lowest to highest boiling point is gases, gasoline, naphtha, kerosene, diesel, and residual fuel oil. This order corresponds to the increasing molecular weight and complexity of the hydrocarbon compounds present in each fraction.

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Actually Welcome to the concept of General organic chemistry.

1.) The formula for alkanes is Cn H2n+2

===> here n = 500, hence we get as,

C500, 2n+2 = 2(500)+2 ==> 1000+2 ==> 1002

hence the formula is ==> C500 H1002

2.) The formula for alkenes is,

CnH2n

hence, here n = 15

so we get as,

===> C15 H30

Explanation: A river drainage basin is an area drained by a river and all of its tributaries. A river basin is made up of many different watersheds. A watershed is a small version of a river basin. Every stream and tributary has its own watershed, which drains to a larger stream or wetland.

The component of a river system is made of stream and small rivers that feed into a large river is tributaries. The component of a river system also called a drainage system is watersheds. The component of a river system is a ridge between water flowing in two directions is divided.

Tributaries are the small rivers or streams that are made from the big or main river.

Watershed is the place where the rainwater from all river lines come to a point.

Thus, the correct options are tributaries, watersheds, and divided.

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The value of Ksp for Ba3(PO4)2 can be calculated using the molar solubility of the salt in water at 25°C, which is given as 1.4x10^(-8) mol / L.


Ksp is the solubility product constant, which is the product of the concentrations of the ions in a saturated solution of a salt at a specific temperature. The balanced equation for the dissociation of Ba3(PO4)2 in water is:

Ba3(PO4)2(s) ⇌ 3 Ba2+(aq) + 2 PO4^3-(aq)

Since the stoichiometry of the reaction shows that 3 moles of Ba2+ ions are produced for every mole of Ba3(PO4)2 dissolved, the concentration of Ba2+ ions can be calculated as follows:

[Ba2+] = 3 × molar solubility = 3 × 1.4x10^(-8) mol / L = 4.2x10^(-8) mol / L

Similarly, the concentration of PO4^3- ions can be calculated as:

[PO4^3-] = 2 × molar solubility = 2 × 1.4x10^(-8) mol / L = 2.8x10^(-8) mol / L

Therefore, the value of Ksp for Ba3(PO4)2 can be calculated by multiplying the concentrations of the ions raised to their stoichiometric coefficients:

Ksp = [Ba2+]^3 [PO4^3-]^2
   = (4.2x10^(-8))^3 × (2.8x10^(-8))^2
   = 3.4x10^(-46)


The value of Ksp for Ba3(PO4)2 at 25°C is 3.4x10^(-46).

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Answer:

Explanation:

vacuole -used to storage

Yes for instance.

once given the physical properties of the alkali metal you can be able to indicate the group and where you can find them in the periodic table. properties like it being soft and having relatively low melting point (Li, Na, K, RB, CS, Fr)

or once been said that it reacts with group 7 Elements that means we are quick to know it out of those elements.

now to answer your question specifically, if the information given upon says an element burns in air with a yellow flame. Then we are quick to say it's Sodium.

so yeah.

Decomposition processes should appear here on Chemistry previous modules DBA, When I'm done with the DBA, I'll respond to this query.

Opposition or antagonism to a force, effect, or movement is a reactionary act, process, or occurrence. especially: a reaction to a particular treatment, circumstance, or stimulus; leaning toward a past and typically antiquated political or social system or policy.

Combination, disintegration, single-replacement, twofold, and combustion are the five fundamental types of chemical reactions. You can classify a reaction into one of these groups by looking at the reactants and products.

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Answer: I was asked to classify equations, balance equations, and define + explain the law of conservation of mass

The value of the bond energy X in the reaction is 81 kJ/mol.

We know that the bond energy of the substance has to do with the energy that would have to be supplied so as to break the bond that is in the substance. This is also the energy that we would need so as to be able to form the bond.

Let us all now recall that we can be able to obtain the enthalpy of the reaction from the bond energies of the reactants and the products in the reactants in which case we would have;

Sum of bond energies of the reactants - Sum of bond energies of the products

56 = [5(413) + 339] - [431 + 4(413) + X + 346]

56 = (2065 + 339) - (2429 + X)

56 =  2429 - 2404  - X

X = 81 kJ/mol

Thus, we can see that the bond energy of the carbon carbon double bond as we can see is 81 kJ/mol.

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Increasing the concentration of N2(g) will causes the equilibrium to shift to the right.

Chemical equilibria can be shifted by changing the conditions that the system experiences. We say that we "stress" the equilibrium. When we stress the equilibrium, the chemical reaction is no longer at equilibrium, and the reaction starts to move back toward equilibrium in such a way as to decrease the stress.

According to Le Chatelier's principle, a change in one of the variables that describe a system at equilibrium produces a shift in the position of the equilibrium that counteracts the effect of this change.

In the synthesis of ammonia the equilibrium will shift to right only when we increase the concentration of N2(g). Because increasing nitrogen gas causes more ammonia to be produced, so the concentration of ammonia must increase.

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According to superposition principle of rocks the oldest sedimentary rock layer is in the bottom and the youngest will be the upper layer.

One of the geological laws that geologists use to calculate the relative ages of rock strata, or layers, is the law of superposition. According to this theory, rock layers are stacked or deposited one on top of the other. The bottom will have the oldest rock strata and the top will have the youngest.

Earlier rocks, which were horizontally deposited over the older layers, are buried deeper in the planet than younger ones. This now widely accepted idea, which is also known as the Law of Superposition, is regarded as a fundamental rule of geology.

Long before the technology existed to compute the precise ages of rocks, geologists were able to use this principle to identify the oldest rock layers.

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Answer:

wowits too long

Explanation:

Answer:

it's A.

Explanation:

have uh good day ma :)))))))

Stimulus is an action or event that causes a reaction or response in an organism or system. Option D is correct.

A stimulus is an action or event that triggers a reaction or response in an organism or system. In other words, a stimulus is any change in the environment that an organism or system can detect and respond to.

For example, the sound of a loud noise is a stimulus that can cause an organism to startle or run away. A sudden bright light can be a stimulus that causes a person to blink or shield their eyes.

Stimuli can be internal or external, and they can be physical, chemical, or biological in nature. Some examples of internal stimuli include hunger, thirst, and pain, while external stimuli include temperature changes, odors, and sounds.

The ability to detect and respond to stimuli is critical for the survival of organisms, as it enables them to adapt and respond to changing environmental conditions.

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correct form of question would be

What is a stimulus?(2 points)

A. A form of energy that causes a change

B. A tool to measure the amount of water in the air

C. A type of force that causes objects to move

D. An action or event that causes a reaction or response in an organism or system.

The solubility product of Ag\(_3\)PO\(_4\) is 8.2x10^-17.

The question is asking for the solubility product of Ag\(_3\)PO\(_4\) given that its solubility is 6.7x10^-3 g/L. The solubility product (Ksp) is an equilibrium constant that tells us the degree to which a sparingly soluble salt dissociates in solution. It is defined as the product of the molar concentrations (in moles per liter) of the ions raised to the powers of their stoichiometric coefficients.

For Ag\(_3\)PO\(_4\), the dissociation equation is:

Ag\(_3\)PO\(_4\)(s) ⇌ 3\(Ag^+\)(aq) +  \(PO_4^{3-}\)(aq)

The solubility of Ag\(_3\)PO\(_4\) is given as 6.7x10^-3 g/L. This means that at equilibrium, the concentration of \(Ag^+\) and \(PO_4^{3-}\) ions in the solution are equal to the solubility of Ag\(_3\)PO\(_4\), which can be converted to moles per liter (M) using its molar mass:

Ag\(_3\)PO\(_4\)= 3(107.87 g/mol) + 30.97 g/mol = 411.58 g/mol

Molarity (M) = moles/L

Converting solubility to molarity, we get:

Molarity (Ag\(_3\)PO\(_4\)) = 6.7x10^-3 g/L ÷ 411.58 g/mol= 1.625x10^-5 M

According to the dissociation equation, the molar concentrations of \(Ag^+\) and \(PO_4^{3-}\) ions are three times that of Ag\(_3\)PO\(_4\):

Molarity (\(Ag^+\)) = 3(1.625x10^-5 M) = 4.875x10^-5 M

Molarity (\(PO_4^{3-}\)) = 1.625x10^-5 M

The solubility product (Ksp) of Ag\(_3\)PO\(_4\) is calculated using the concentrations of \(Ag^+\) and \(PO_4^{3-}\) ions raised to the powers of their stoichiometric coefficient.

Ksp = [\(Ag^+\)]^3[\(PO_4^{3-}\)]

= (4.875x10^-5 M)^3(1.625x10^-5 M)

= 8.2x10^-17

Therefore, the solubility product of Ag\(_3\)PO\(_4\) is 8.2x10^-17.

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The number of mole of nitrogen gas, N₂, needed to produce 150 g of ammonia, NH₃ is 4.41 moles

Mole = mass /molar mass

Mole of NH₃ = 150 / 17

Mole of NH₃ = 8.82 moles

Balanced equation

N₂ + 3H₂ —> 2NH₃

From the balanced equation above,

2 moles of NH₃ were produced by 1 mole of N₂.

Therefore,

8.82 moles of NH₃ will be produced by = 8.82 / 2 = 4.41 moles of N₂.

Thus, 4.41 moles of N₂ is  needed for the reaction.

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Fatigue is a form of failure that occurs when a material is subjected to a fluctuating stress load. A torsion test is a mechanical test that is used to determine a material's mechanical properties under torsional loads. The test is conducted on a sample such that different parts of a specimen experience different angular displacements.

Differential scanning calorimetry (DSC) is a thermal analysis method that examines the differences in the amount of heat required to raise the temperature of a sample and reference as a function of temperature or time. Here's the answer to your questions.1. Which of the following is false about DSC: A metal pan is placed on each disc. One of the pans contains a sample, and the other contains copper as a reference.

A fluctuating stress caused a material to fail at a stress lower than the yield strength due to: Answer: fatigueFatigue is the answer to this question. Fatigue is a form of failure that occurs when a material is subjected to a fluctuating stress load. The stress load is below the yield strength, but it causes the material to fail. Fatigue is a common cause of failure in engineering materials, and it can lead to unexpected and catastrophic failures if not correctly accounted for during design.3. DBTT value should be below the working environment temp of the designed object. Answer: TrueDBTT value should be below the working environment temp of the designed object.

The statement is true. The DBTT value should be lower than the temperature of the working environment in which the object is being used. This is because the DBTT value is the temperature at which the material's ductility becomes brittle. A material with a high DBTT value is more prone to brittle fractures, which can be catastrophic in a working environment.4. A test that is conducted on a sample such that different parts of a specimen experience different angular displacements is called?The test is conducted on a sample such that different parts of a specimen experience different angular displacements. The results of the test are used to determine the material's shear modulus, which is a measure of the material's resistance to shear deformation.

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Answer:

c

Explanation:

c is correct i believe

Answer:

B. Liquid

B. Gas

Explanation:

I majored in Chemistry

Answer:

14 grams of calcium oxide would be produced by thermal decomposition of 25 grams of calcium carbonate.

Explanation:

You know:

CaCO₃ → CaO + CO₂

In the first place, by stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) the following quantities react and are produced:

Being:

the molar mass of the compounds participating in the reaction is:

Then, by stoichiometry of the reaction, the following mass amounts of the compounds participating in the reaction react and are produced:

You can then apply the following rule of three: if by stoichiometry of the reaction 100 grams of calcium carbonate CaCO₃ produce 56 grams of calcium oxide CaO, 25 grams of CaCO₃ how much mass of CaO will it produce?

\(mass of calcium oxide=\frac{25 grams of CaCO_{3} *56 grams of CaO}{100 grams of CaCO_{3} }\)

mass of calcium oxide= 14 grams

14 grams of calcium oxide would be produced by thermal decomposition of 25 grams of calcium carbonate.

The fugacity in atm for pure ethane at 310 K and 20.4 atm is given by the equation: f = 20.4 exp (-Δg1/RT). The change in chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm is -0.0911RT.

Fugacity is a measure of the escaping tendency of a component in a mixture, which is defined as the pressure that the component would have if it obeyed ideal gas laws. It is used as a correction factor in the calculation of equilibrium constants and thermodynamic properties such as chemical potential. Here we need to determine the fugacity in atm for pure ethane at 310 K and 20.4 atm and the change in the chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm. So, using the formula of fugacity: f = P.exp(Δu/RT) Where P is the pressure of the system, R is the gas constant, T is the temperature of the system, Δu is the change in chemical potential of the system.  Δu = RT ln (f / P)The chemical potential at the initial state can be calculated using the ideal gas equation as: PV = nRT    

=>  P

= nRT/V

=> 20.4 atm

= nRT/V

=> n/V

= 20.4/RT The chemical potential of the system at the initial state is:

Δu1 = RT ln (f/P)

= RT ln (f/20.4) Also, we know that for a pure substance,

Δu = Δg. So,

Δg1 = Δu1 The change in pressure is 24 atm – 20.4 atm

= 3.6 atm At the second state, the pressure is 24 atm.

Using the ideal gas equation, n/V = 24/RT The chemical potential of the system at the second state is: Δu2 = RT ln (f/24) = RT ln (f/24) The change in chemical potential is Δu2 – Δu1 The change in chemical potential is

Δu2 – Δu1 = RT ln (f/24) – RT ln (f/20.4)

= RT ln [(f/24)/(f/20.4)]

= RT ln (20.4/24)

= - 0.0911 RT Therefore, the fugacity in atm for pure ethane at 310 K and 20.4 atm is:

f = P.exp(Δu/RT)

=> f

= 20.4 exp (-Δu1/RT)

=> f

= 20.4 exp (-Δg1/RT) And, the change in the chemical potential between this state and a second state of ethane where the temperature is constant but pressure is 24 atm is -0.0911RT. Therefore, the fugacity in atm for pure ethane at 310 K and 20.4 atm is given by the equation: f = 20.4 exp (-Δg1/RT). The change in chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm is -0.0911RT.

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Answer: 8 electrons

Explanation:

Answer: 8 valence electrons

Explanation: This is because the maximum electron an energy level can hold is 8 making it a stable atom

Answer:  A) Rock formed by...magma or lava

Explanation:

As the question says, igneous rocks are formed from the cooling and solidification of magma or lava.

just a bit of visual aid thanks to Thoughtco.

Answer:

It is the first one - Rock formed by the cooling and solidification of hot liquid magma or lava.

Explanation:

When flour is mixed with water, an elastic network forms as gliadin and glutenin combine, and this is known as gluten. It is both elastic and plastic and can expand with the inner pressure of gases (air, steam, and co2), allowing the bread to expand with the action of yeast.

Gluten is a mixture of two proteins, gliadin and glutenin, which gives wheat dough its elastic and viscoelastic properties. When flour is mixed with water, the gluten forms an elastic network that can expand with the inner pressure of gases (air, steam, and CO2). This allows bread to rise with the action of yeast, making it light and fluffy. Gluten is also responsible for the chewy texture of bread and other baked goods that use wheat flour.

Gluten is found in wheat, barley, and rye. People with celiac disease or gluten intolerance are unable to digest gluten, and consuming it can cause a range of symptoms, including diarrhea, bloating, and abdominal pain. As a result, they must follow a gluten-free diet. Gluten-free flours made from rice, corn, and other grains can be used as a substitute for wheat flour in many recipes.

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