Calculate the length between the following points using the distance formula

(1,6) and (7,14)

Length:______

Answer:

57.4 g

Explanation:

30.4 g Al will produce 57.4 g Al 2 O 3 30.4 g O 2 will produce 64.6 g Al

2 O 3 .The limiting reagent is aluminum, and the maximum amount of aluminum oxide that can be produced in this reaction is 57.4 g

The mass of the nitrogen gas is approximately 949 grams.

The mass of the nitrogen gas can be calculated using the ideal gas law, which states:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles of gas, R is the gas constant, and T is the temperature in Kelvin. R is the ideal gas constant ( 0.08206 Latm/molK )

Given thw volume of the Nitrogen gas to be 759l, at ST, temperature equals 273.15 K and pressure 1 atm.

we can rearrange the ideal gas law to solve for n:

PV = nRT

n = PV / RT

Plug in the values

n = ( 1 atm × 759 L ) / ( 0.08206 Latm/molK × 273.15 K )

n = 33.86 mol

Finally, we can calculate the mass of the nitrogen gas using the molar mass of nitrogen:

m = n × M

Where M = 28.02 g/mol is the molar mass of nitrogen.

m = 33.86 mol × 28.02 g/mol

m = 949 g

Therefore, the mass is 949 g.

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I will say 3 is wrong because the time of day doesn't matter.But what really matters is 1,2,4 we just need to figure which one is correct.

1.The Wife's blood

Real blood will smell bad and with the time it will turn the color red to a dark-ish color red with brown.To see if it is real you have to see if the blood is a dark brown with red if it's not then it's a fake.

2.The type of Gun

You have to feel if it's a fake it might be plastic or another toy material.The gun has to feel like metal.

So the answer might be 1 or 2

Hope this helps :)

Explanation:

Because chemistry deals with the structure of matter (such as the structure of the atom, it is related to physics. ... Because geology involves study of the matter the Earth and other bodies in the solar system are made of, geology involves chemistry. Geochemistry is the study of Earth materials, and how they change.

a. Moles of C: 0.185 mole.

b. Moles of O:0.185 mole.

c. Atoms of H:(0.185 mole) × (6.022 × 10^23 atoms/mole)

d. Atoms of C: 1.1117 x 10^23 atoms.

a. Moles of C:

In 0.185 mole of CO, the subscript "1" in CO indicates that there is one mole of carbon (C) in one mole of CO. Therefore, the moles of carbon in 0.185 moles of CO are also 0.185 mole.

b. Moles of O:

In 0.185 mole of CO, the subscript "1" in CO indicates that there is one mole of oxygen (O) in one mole of CO. Therefore, the moles of oxygen in 0.185 moles of CO are also 0.185 moles.

c. Atoms of H:

In 0.185 mole of C H O, there is 1 mole of hydrogen (H) for each mole of C H O. Since 1 mole contains Avogadro's number of entities (6.022 × 10^23), the number of atoms can be calculated by multiplying the moles by Avogadro's number.

Number of atoms of H = (0.185 mole) × (6.022 × 10^23 atoms/mole)

d. Atoms of C:

In 0.185 mole of CO, there is one mole of carbon (C) in one mole of CO. Avogadro's number states that one mole of any substance contains 6.022 x 10^23 entities (atoms, molecules, or ions). Therefore, the number of atoms of carbon in 0.185 moles of CO is approximately 0.185 x 6.022 x 10^23, which is 1.1117 x 10^23 atoms.

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Based on the given isotopic composition, the relative contribution of C3 plants is higher compared to C4 plants in the soil organic matter of Kenya.

To determine the relative contribution of C3 and C4 plants to the soil organic matter in Kenya based on their stable carbon isotopic composition, we can use the concept of isotopic discrimination.

C3 and C4 plants have different photosynthetic pathways, and they exhibit distinct carbon isotope signatures. C3 plants typically have a more negative δ13C value (around -30 permil to -22 permil), while C4 plants have a less negative δ13C value (around -16 permil to -9 permil).

In this case, the soil organic matter in Kenya has a δ13C value of -18 permil, while the air δ13C value is -7 permil. The difference between these values (-18 permil - (-7 permil)) gives us the isotopic discrimination between the atmosphere and the soil organic matter.

δ13C discrimination = δ13C organic matter - δ13C atmosphere

δ13C discrimination = -18 permil - (-7 permil)

δ13C discrimination = -11 permil

Since the δ13C discrimination is negative, it suggests that C3 plants have a dominant contribution to the soil organic matter. C4 plants, with their less negative δ13C values, are less likely to contribute significantly to the organic matter in this case.

Therefore, based on the given isotopic composition, the relative contribution of C3 plants is higher compared to C4 plants in the soil organic matter of Kenya.

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Answer:

The above reaction is an example of alcoholic fermentation.

Explanation:

In alcoholic fermentation, one mole of glucose gets converted into two moles of alcohol, two moles of carbon dioxide and two moles of adenosine tri-phosphate (ATP).

A brass alloy containing 75% copper and 25% zinc is considered a solid solution. This means that the brass is made up of two or more metals that have been melted together, creating a homogeneous mixture. In this case, the solute in the brass alloy is zinc, while copper is the solvent.

The solute in a brass alloy containing 75% copper and 25% zinc is zinc. Copper acts as the solvent while zinc, which has a lower concentration, is the solute. The solid solution of the two metals produces a unique material that has several desirable properties such as corrosion resistance, ductility, and malleability. Because of its numerous properties, brass is commonly used in a variety of applications, including musical instruments, plumbing fixtures, and decorative items. Additionally, the specific composition of the brass can be varied to alter its properties, making it suitable for different purposes.

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Answer:

Soluable

Explanation:

Because salt dissolves in water.. Your question has no background information to go off of

Answer:

dilute

Explanation:

trustt

The example of a reaction to which Markovnikov's rule applies is: CH₂=CH-CH₂-CH₃ + HBr → CH₂Br-CH₂-CH₂-CH₃

In this reaction, the hydrogen atom from HBr adds to the carbon atom with the fewer alkyl substituents (less substituted carbon), while the bromine atom adds to the carbon atom with more alkyl substituents (more substituted carbon). This follows Markovnikov's rule, which states that in the addition of a protic acid (such as HBr) to an asymmetrically substituted alkene, the hydrogen atom adds to the less substituted carbon and the other atom adds to the more substituted carbon.

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In the given reaction with H3O+ at pH 1, it appears that an organic compound containing nitrogen is reacting under acidic conditions.

However, under these conditions, common reactions involving nitrogen-containing organic compounds are protonation of amines, formation of ammonium salts, or acid-catalyzed reactions like imine or enamine formation. The major product(s) will depend on the structure and functional groups of the starting material. Analyze the structure and reactivity of the nitrogen-containing compound to determine the most probable outcome.

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Second Contributing Structure: Modify electron distribution with positive and negative formal charges.

The second and third contributing structures of the given molecules, along with the corresponding formal charges, are as follows:

Second Contributing Structure:

Draw the structure with modified electron distribution, considering one of the atoms to have a positive formal charge and another atom to have a negative formal charge.

Third Contributing Structure:

Draw the structure with another modified electron distribution, considering the positive and negative formal charges to be placed on different atoms compared to the second structure.

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Answer:

67.89

Explanation:it’s right

The percent composition of carbon in  compound of acrylonitrile is 22.646%.

Percent composition  is defined as a convenient way to record concentration of solution.It is a expression which relates mass of element  to mass of compound  as,mass of element/mass of compound×100.

Percent composition helps in elemental analysis of compound which is useful in analysis of ores also.  It helps in making solutions while performing the titrations.  It helps in prediction of chemical formula which can be predicted by mass and molar mass of an element.

The compound acrylonitrile  has a molar mass 53.06 g/mole and that of carbon is 12 g/mole thus, percent composition of carbon in  compound of acrylonitrile is 12/53.06×100=22.646%.

Thus, the percent composition of carbon in  compound of acrylonitrile is 22.646%.

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An example of an electrocyclic reaction is the Diels-Alder reaction. New σ-bonds, that are energetically higher stable than that of the π-bonds, are formed during this reaction.

A conjugated diene & an alkene (dienophile) react to generate unsaturated six-membered rings in the Diels-Alder reaction. The reaction is also known as a "cycloaddition" because it results in the production of such a cyclic product through a cyclic transition state.

Because it is created whenever the electron-withdrawing group of the dienophile are facing in the direction of the electrons of the diene, endo is typically the main result.

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The neutralization reaction of HNO2 and a strong base results in the formation of a salt and water. To determine the standard change in Gibbs free energy at 25°C, we can use the equation:

ΔG = ΔH - TΔS

where ΔG is the standard change in Gibbs free energy, ΔH is the standard change in enthalpy, T is the temperature in Kelvin, and ΔS is the standard change in entropy.Since HNO2 is a weak acid, we can consider its ionization as a two-step process:HNO2 ⇌ H+ + NO2^-The reaction between H+ and OH- from the strong base forms water:H+ + OH- → H2OTo calculate the ΔG for this reaction, we need the values of ΔH and ΔS. However, these values were not provided in the question.

If we assume the reaction is at standard conditions (1 atm and 25°C), we can use standard values for ΔH and ΔS from thermodynamic tables. At this point, it is important to note that providing the standard change in Gibbs free energy at 25°C without the values for ΔH and ΔS is not possible

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Answer:4.0 liters of everything

Explanation: i just know...

Answer:

Eukaryotes and prokaryotes

Explanation:

The additional information that is required to obtain the enthalpy of neutralization is the density of the solution.

We know that the enthalpy of neutralization is defined as the heat that is evolved when  an acid is neutralized by a base under standard conditions. We can be able to obtain the enthalpy of the neutralization of the acid and the base by performance of some simple chemical calculations.

To carry out this calculations we need the all of the pieces of information that have been listed in the question such as the masses of the solution, the temperature of the solution in the initial and final states and so on.

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According to the question the correct answer is e. compound found in vinegar is acetic acid.

Vinegar is a dilute solution of acetic acid in water, typically containing between 5-8% acetic acid by volume. Acetic acid is a weak organic acid with the chemical formula CH₃COOH. It is produced by the fermentation of ethanol by acetic acid bacteria, and is responsible for the sour taste and pungent smell of vinegar. While other acids such as formic acid, propionic acid, and butyric acid may also be present in vinegar, acetic acid is the main acid responsible for its acidity.

Therefore, the correct option is E.

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Answer:

6m 48cm

Explanation:

First we can convert the length of Mac's bedroom to centimeters:

As 1 m is equal to 100 cm,

As for Dennis' bedroom's information:

Now we can calculate the length of Dennis' bedroom:

Rewriting the answer leaves us with 6m 48cm.

Option (b) is the correct answer. The molar concentration (molarity) of a solution made by dissolving 0.340 moles of CaCl₂ (s) in just enough water to form 1.7 liters of the solution is 0.20 M.

This can be determined using the formula:

Molarity = moles of solute/liters of solution.

In this case, 0.340 moles of CaCl₂ (s) is dissolved in 1.7 liters of solution, so the molarity is:

0.340 / 1.7 = 0.20 M.

Molarity is an important concept in chemistry. It is a measure of the number of moles of a substance dissolved in one liter of solution. In the case of this question, the molarity of the solution is 0.20 M, which means that there are 0.20 moles of CaCl₂ (s) dissolved in one liter of the solution.

In chemistry, molarity is often used to determine the concentration of a solution. The higher the molarity, the higher the concentration of the solute in the solution. For example, a 0.58 M solution of CaCl₂ (s) would be more concentrated than a 0.20 M solution.

To summarize, the molarity of the given solution is 0.20 M.

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The physical mechanism causing the change in strength when using brine as the pore fluid is the presence of salt ions that weaken the interparticle bonds. Salt can reduce the shear strength of clays by increasing the repulsive forces between clay particles.

The strength of clay types at 50% water content can vary depending on whether DI water or brine is used as the pore fluid. Generally, there is a significant difference in strength between the two.

The presence of salt in brine can have an effect on the shear strength of clays. When salt is dissolved in water, it creates ions that can interact with the clay particles. These interactions can lead to the formation of electrical double layers around the clay particles, which can increase the interparticle repulsion and decrease the shear strength of the clay.

On the other hand, when DI water is used as the pore fluid, there is no presence of salt ions to affect the interparticle interactions. As a result, the clay particles can have stronger bonds and higher shear strength compared to when brine is present.

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Answer:

"3. Energy can either be destroyed or created. Its goes from one form to another."  

Explanation:

The third answer choice, "3. Energy can either be destroyed or created. Its goes from one form to another. " is related to the Law of Conservation of Energy from thermodynamics. Is it not a postulate of the Kinetic Molecular Theory.

"1. Average Kinetic Energy of the system is a measure of the temperature of the system."

Postulate of Kinetic Molecular Theory \(\checkmark\)

"2. Energy is conserved in the collisions between gas molecules.."

Postulate of Kinetic Molecular Theory \(\checkmark\)

"3. Energy can either be destroyed or created. Its goes from one form to another.

\(\times\) NOT a Postulate of Kinetic Molecular Theory

"4. Gases travel in straight line until they collide with other gas molecules"

Postulate of Kinetic Molecular Theory \(\checkmark\)

The formula C₁₂H₂₂O₁₁, which describes sugar, is an example of the symbolic domain.

In this context, the macroscopic domain refers to the observable properties and behavior of substances at a larger scale, while the microscopic domain refers to the structure and interactions at the molecular or atomic level. The symbolic domain, on the other hand, involves the use of symbols, such as chemical formulas, to represent substances.

The formula C₁₂H₂₂O₁₁ represents a sugar molecule. It provides information about the composition and ratio of atoms in the molecule, allowing us to identify and differentiate it from other substances. This representation belongs to the symbolic domain because it employs chemical symbols (C, H, and O) to represent the elements and subscripts to denote the number of atoms in the molecule.

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The oxidation of the iron ions in the hemoglobin molecule to the ferric state (Fe³⁺) results in the loss of the molecule's ability to bind and transport oxygen.

This oxidation process alters the structure of hemoglobin, rendering it less effective in its primary function of carrying oxygen to body tissues.

Hemoglobin is a protein found in red blood cells that is responsible for transporting oxygen from the lungs to tissues throughout the body. It contains iron ions (Fe²⁺) that bind to oxygen molecules, forming a reversible complex known as oxyhemoglobin. This complex is crucial for oxygen transport.

However, when the iron ions in hemoglobin undergo oxidation to the ferric state (Fe³⁺), the binding affinity for oxygen decreases significantly. The oxidation can be caused by factors such as exposure to certain chemicals or reactive oxygen species. As a result, the oxidized hemoglobin is unable to efficiently bind oxygen, impairing its oxygen-carrying capacity and potentially leading to reduced oxygen delivery to tissues.

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It is important to tare the flask before adding the solution to accurately measure the amount of solution being added.

Taring is the process of setting the balance to zero when there is an empty container on it, so that only the weight of the substance being added is measured.

This ensures that the weight of the container itself is not included in the measurement, providing a more precise measurement of the solution.

This is particularly important when adding small quantities of solution, as even a slight deviation in measurement can significantly affect the outcome of the experiment or analysis.

Taring helps to ensure consistency and accuracy in experimental procedures and enables researchers to obtain reliable results.

In summary, taring the flask before adding the solution is a crucial step in laboratory procedures that helps to maintain accuracy and precision.

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In vivo, most naturally occurring amino acids adopt the L-configuration or the L-stereoisomer. The L-configuration refers to the spatial arrangement of atoms around the central carbon atom (the α-carbon) in the amino acid molecule. In this configuration, the amino group (-NH2) is positioned to the left, and the carboxyl group (-COOH) is positioned to the right when the molecule is drawn in the Fischer projection.

The prevalence of the L-configuration in amino acids can be attributed to the evolutionary history of life on Earth. It is believed that early biochemical processes favored the production of L-amino acids, possibly due to the asymmetry created by certain enzymatic reactions. Over time, this bias toward L-amino acids became dominant in living organisms.

The stereoisomer D-configuration, on the other hand, is less common in naturally occurring amino acids. D-amino acids can be found in certain organisms, such as bacteria, and in special contexts, such as in the cell walls of some bacteria or in peptides produced by non-ribosomal peptide synthesis. However, they are generally rare in proteins found in living systems.

It is important to note that while L-amino acids are predominant in proteins, there are exceptions. For instance, the amino acid glycine lacks a chiral center and is achiral, meaning it does not have a specific L- or D-configuration. Additionally, some non-proteinogenic amino acids, which are not incorporated into proteins, may have different stereochemical configurations.

Overall, the L-configuration is the most commonly observed stereochemical configuration for amino acids in vivo, playing a crucial role in the structure, function, and chemistry of proteins in living organisms.

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