concentrated aqueous ammonia contains 1.08 mol dissolved in 2.46 mol . what is the mole fraction of in concentrated aqueous ammonia? what is the molal concentration of ?

Isomers are defined as molecules with the same chemical formula but different structures. The correct answer is vi.

Isomers are molecules that have the same chemical formula, meaning they have the same types and numbers of atoms, but they differ in their arrangement or connectivity of atoms.

This results in different structural arrangements and, in turn, different chemical and physical properties. Isomers can have different functional groups, spatial arrangements, or bond connectivity while maintaining the same chemical formula.

These differences in structure can lead to variations in reactivity, biological activity, and other properties of the molecules.

Option i and ii are incorrect because they refer to isotopes, which are atoms of the same element with different numbers of neutrons.

Option iii is incorrect as it describes molecules with different chemical formulas but similar biological functions.

Option iv is incorrect as it describes stereoisomers, which have the same three-dimensional structure but differ in spatial arrangement.

Option v is incorrect as it describes elements with the same number of electrons in the outer shell, which are known as isotopes.

Therefore, the correct option is vi. molecules with the same chemical formula but different structures.

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Answer:

Using the drop down Menu

Proton : Possessing a Charge of +1. It is found in the Nucleus and has a Mass of "A"

Neutron; Possesses a charge of 0. It is situated in the Nucleus and Has a Mass of "B"

Electron: Has a charge of -1. Found in the Orbitals of the atom and has a mass of "C"

The equilibrium conversion to hydrogen decreases when steam is added to the feed and everything else kept the same for the following reaction: C₄H₈ < == > C₄H₆ + H₂.

Conversion is defined as the transformation of a compound into another, as a result of a chemical reaction. Equilibrium conversion is the extent of conversion when a chemical reaction proceeds to equilibrium. For the given reaction:C4H8 < == > C₄H₆ +H₂

The conversion of C₄H₈ to C₄H₆ and H₂ is decreased when steam is added to the feed and everything else kept the same. The decrease in conversion is due to the Le Chatelier's principle. It states that when a system in chemical equilibrium is subjected to a change in temperature, pressure, or concentration of reactants or products, the system shifts in equilibrium position to counteract the effect of the change.

As per the principle, the system will counteract the increase in the concentration of water molecules by moving in the direction that reduces the concentration of water molecules, that is, backward.

This causes the reverse reaction to occur more and reduces the conversion of C₄H₈ to  C₄H₆ and H₂. Hence, the equilibrium conversion to hydrogen decreases when steam is added to the feed and everything else kept the same.

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There are several conditions that can result in deviations from Beer's Law when the pathlength is constant. This can cause the Beer's Law plot to become non-linear.

When the solute concentrations exceed 0.01 m. This can cause the Beer's Law plot to become flat or even inverted. The use of polychromatic radiation can also cause deviations from Beer's Law. This is because different wavelengths of light will be absorbed to different degrees by the sample.

When the pathlength is constant, the conditions that can result in deviations from Beer's law are:

1) All radiation not absorbed by the sample is transmitted to the detector.

2) The absorbing species undergoes dissociation or association.

3) The sample is homogeneous.

4) Solute concentrations exceeding 0.01 M.

5) The use of polychromatic radiation.

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Answer:

Explanation

Explanation:

Let's say that in an environment, the trees are turning yellow (this is obviously made up) and there are green butteflies and red birds that hunt the butterflies. Both will need to evolve, or else they will both be spotted by predators, like snakes can eat the birds, and those birds eat the butterflies.

Answer:

1=B

2=A

3=A

Explanation:

Any subsatance with a ph of less than 7 is acidic.

Bases measure over 7

When tiny droplets of one liquid are finely dispersed within another liquid it is called emulsion.

Emulsion can be defined as the process by which two liquids that are not miscible come together to form a mixture.

The emulsion mixture usually consists of an oil phase and a water phase.

The oil phase appears as droplets when dispersed (mixed with) the water phase.

The uses of emulsion include:

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The attributes of the genetic code include all of the following except B. Each codon specifies more than one amino acid.

A. Each codon consists of 3 nucleotides: This is a correct attribute of the genetic code. Codons are made up of three consecutive nucleotides, which form the basic unit of the genetic code.

B. Each codon specifies more than one amino acid: This is incorrect. Each codon typically specifies only one amino acid. However, there are some exceptions called "ambiguous codons" where a single codon can code for more than one amino acid, but they are relatively rare.

C. Codons are non-overlapping: This is a correct attribute of the genetic code. Codons are read sequentially and are not overlapping. Each codon starts at a specific position in the DNA or mRNA sequence.

D. Most amino acids are specified by more than one codon: This is a correct attribute of the genetic code. With a few exceptions, most amino acids are encoded by multiple codons. This redundancy provides some level of error tolerance and allows for variations in the DNA sequence without affecting the encoded protein.

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Answer:

2g/ml

Explanation:

Density is mass divided by volume so 4 divided by 2 is 2. So it's 2 grams per milliliter or 2g/ml

The density of an object is 2g/mL .

It is defined as mass per unit volume.

The formula for density is as follows:-

\(Density=\frac{Mass}{Volume}\).......(1)

Substitute 4 g for mass and 2 mL for volume in the above equation as follows:-

\(Density=\frac{4\ g}{2\ mL} \\=2\ g/mL\)

Hence, the density of an object is 2 g/mL.

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The type of reaction represented by the equation is replacement reaction.

A replacement reaction also known as displacement reaction is a reaction in which the ions of the reactant exchange to produce a new product. For example

AB + CD —> AD + CB

In the above reaction, we can see that D replaces B in the product which shows that the reaction is a replacement reaction.

NaCl + AgNO₃ → NaNO₃ + AgCl

In the above reaction, we can see that Cl replaces NO₃ in the product. This simply indicates that the reaction is a replacement reaction.

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At STP, 22.4 liters of nitrogen gas (N2) will have a mass of 28 grams.

At STP (Standard Temperature and Pressure), which is defined as a temperature of 0°C (273.15 K) and a pressure of 1 atmosphere (atm), 22.4 liters of any gas will contain one mole of the gas.

This is based on Avogadro's Law, which states that equal volumes of gases at the same temperature and pressure contain the same number of particles, regardless of their chemical nature and physical properties.

To find the mass of 22.4 liters of nitrogen gas (N2) at STP, you first need to determine the molar mass of nitrogen gas. Nitrogen has an atomic mass of approximately 14 atomic mass units (amu). Since N2 is a diatomic molecule, meaning it consists of two nitrogen atoms, the molar mass of N2 is 2 * 14 amu = 28 grams per mole.

Now that you have the molar mass, you can determine the mass of 22.4 liters of nitrogen gas at STP. Since there is one mole of N2 in 22.4 liters at STP and the molar mass of N2 is 28 grams per mole, the mass of 22.4 liters of nitrogen gas at STP is:

1 mole * 28 grams per mole = 28 grams

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Answer: I don’t know lol

Explanation:  I am so sorry I thought this was easy

Answer:

Ant.

Explanation:

The dog would be the most frantic, when all are compared at an equal speed of 30 mph. An ant of such strength, has six jointed legs and has an exoskeleton. An Ant of such size(mass) and weight would have take off with better traction too(6 legs). So the Ant would have the greatest kinetic energy. Also it would take turns while fleeing from the wildfire, while running at almost 30 mph while the other animals wouldn't come that close.

It is technically and literally illogical to say an ant can do 30 mph in its regular size.

Dont believe me? Watch ants scurrying away when threatened and taking turns and U-turns. Six legs offer more energy while fleeing by instinct. Literally six legs at 30 mph. Crazy!

The probability cloud of the electron in a hydrogen atom relate to the orbit described by niels bohr will be The average separation between the cloud and the nucleus is almost equal to the radius of such Bohr orbit.

When explaining the line spectrum of both the hydrogen atom, Niels Bohr made the assumption that the electron traveled in circular orbits which meant that only orbits with specific radii were permitted.

The electrons that are closest to the nucleus would make an effort to get as close as they can. The inner electrons will act as a shield for the outer/valence electrons, which are farther from the nucleus. The outside electrons cannot establish a strong attraction towards the nucleus because of the inner electrons.

Therefore, the average separation between the cloud and the nucleus is almost equal to the radius of such Bohr orbit.

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The difference between the molecular orbital (MO) theory and the valence bond (VB) theory is MO theory considers the formation of molecular orbitals by linear combination of atomic orbitals, while VB theory focuses on localized bonding due to the overlap of atomic orbitals, highlighting the geometrical arrangement of bonds in molecules

Molecular orbital theory is a method that describes the electronic structure of molecules by combining atomic orbitals to form molecular orbitals, which are delocalized over the entire molecule. This theory focuses on the formation of new orbitals from atomic orbitals and gives insight into the distribution of electron density, bond order, and magnetism of the molecule.

On the other hand, valence bond theory is based on the idea that atomic orbitals of individual atoms overlap to form bonds between the atoms, this theory emphasizes the localized nature of bonding, where electrons are shared between two specific atoms. It explains the bonding in terms of hybridization of atomic orbitals and their orientation in space.

In summary, MO theory considers the formation of molecular orbitals by linear combination of atomic orbitals, providing a more global view of bonding, while VB theory focuses on localized bonding due to the overlap of atomic orbitals, highlighting the geometrical arrangement of bonds in molecules. Both theories are essential for understanding the electronic structure and properties of molecules.

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Answer:

the four major type of animal tissue are:

connective tissue

nervous tissue

epithelial tissue

muscular tissue

Answer:

Exothermic reaction

Explanation:

An exothermic process releases heat, causing the temperature of the immediate surroundings to rise

The potential energy diagram for a reaction starts at 180 kJ and ends at 300 kJ. the type of reaction does the diagram best represent exothermic reaction.

An exothermic reaction would be one in which heat energy is emitted. Exo stands for "evolve out." The term "thermos" refers to a container that holds heat. The term "exothermic" refers to a process in which heat is produced. In general, an exothermic reaction is one in which heat is released as a byproduct.

Therefore, the reaction diagram will represent exothermic reaction.

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Answer:

Compressibility means: being able to basically squish something easier. Like water, water can be reduced in volume or size under pressure When that water expands, it turns into a gas.

Explanation:

The most likely explanation for what happened halfway through year 15 is D. a sharp decrease in available land.

The term "population" refers to the average number of distinct residents in a particular area or region across time. They are individuals who are part of the same class of creatures. Halfway through year 15, the amount of land available begins to rapidly decline.

Beginning above 400, the line increases above 400 and declines below 350 at year 14, increases over 400 and rises to over 400 and drops to 200 at year 16, and so on.

Due to unfavorable weather and a lack of food, the number of rabbits drastically decreases during the cold winters and scorching summers. The population grows when the conditions are good, such as in the spring and summer, and the amount of land accessible shrinks as a result. As a result, there will be a dramatic drop in the amount of land that is available.

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The volume of the diluted HBr stock solution is 546mL.

CALCULATE VOLUME:

The volume of a diluted solution can be calculated by using the following expression:

C1V1 = C2V2

Where;

According to this question, 45.5mL of a 18.0M HBr stock solution is diluted to 1.5 M, the volume of the diluted solution is calculated as follows:

18.0 × 45.5 = 1.5 × V2

819 = 1.5V2

V2 = 819 ÷ 1.5

V2 = 546mL

Therefore, the volume of the diluted HBr stock solution is 546mL.

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Answer

D

Explanation:

They take up usable forms of nitrogen found in soil

Answer:

d

Explanation:

i took the test

Answer:

If heat flows into the surroundings (i.e., when a reaction is exothermic) the random motions of the molecules in the surroundings increase. Thus, the entropy of the surroundings increases. The second law of thermodynamics states that the total entropy of the universe always increases for a spontaneous process.

Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

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Answer:

2 moles of water

Explanation:

its given 2 H2O

Answer:

He only purchases strawberries grown locally.

Explanation:

Based on the information we are given, this is the only reasonable answer.

Answer :He only purchases strawberries grown locally.

Explanation: The correct answer is He only purchases strawberries grown locally. Many consumers have preferences as to where their food comes from. Some want to avoid products that have been shipped extensively and prefer to purchase locally produced goods and services. Country of Origin labeling does not indicate whether a product is organic, its nutritional content, or whether it is fresh, and a consumer would need to determine this information another way.

Complete question:

A spirit burner used 1.00 g methanol to raise the temperature of 100.0 g water in a metal can from 28.00C to 58.0C. Calculate the heat of combustion of methanol in kJ/mol.

Answer:

the heat of combustion of the methanol is 402.31 kJ/mol

Explanation:

Given;

mass of water, \(m_w\) = 100 g

initial temperature of water, t₁ = 28 ⁰C

final temperature of water, t₂ = 58 ⁰C

specific heat capacity of water = 4.184 J/g⁰C

reacting mass of the methanol, m = 1.00 g

molecular mass of methanol = 32.04 g/mol

number of moles = 1 / 32.04

                             = 0.0312 mol

Apply the principle of conservation of energy;

\(n\Delta H_{methanol} = Q_{water}\\\\n\Delta H_{methanol} = mc\Delta t\\\\n\Delta H_{methanol} = 100 \times 4.184\times (58-28)\\\\n\Delta H_{methanol} = 12,552 \ J\\\\n\Delta H_{methanol} = 12.552 \ kJ\\\\\Delta H_{methanol} = \frac{12.552}{n} \\\\H_{methanol} = \frac{12.552 \ kJ}{0.0312 \ mol} \\\\\Delta H_{methanol} = 402.31 \ kJ/mol\)

Therefore, the heat of combustion of the methanol is 402.31 kJ/mol

Answer:

Hot Oil will have be less viscous.

Explanation:

This is because due to the heat its molecules will be far apart from each other.

Answer:

b

Explanation:

because the correct answer

The atomic number of an atom that has six protons, six neutrons, and six electrons is 6. And the element is carbon.

Carbon is known as a tetravalent compound.

It has four electrons in its outermost shell. It forms a covalent bond with other compounds.

The number of neutrons. = 6

Number of electrons = 6

Number of protons = 6

So the atomic number of the compound is,

The atomic number of an element = Number of protons present in its nucleus

The number of protons given in the compound is 6.

So the atomic number of the compound is also 6.

Carbon has six atomic numbers.

Therefore, the atomic number of an atom that has six protons, six neutrons, and six electrons is 6. And the element is carbon.

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Water pollution is described as the presence of toxins in water sources that make it unsafe for use in drinking, cooking, cleaning, swimming, and other activities.

Pollutants include things like chemicals, trash, bacteria, and parasites. All pollution eventually finds its way into the water.

The Clean Water Act is what?

The Clean Water Act (CWA) establishes the fundamental framework for policing pollutant discharges into US waters as well as standards for the cleanliness of surface waters.

The CWA is thought to have its roots in the Federal Water Pollution Control Act, which was approved in 1948 but underwent considerable revisions and expansion in 1972. The Act's common name was modified to "Clean Water Act" with revisions in 1972.

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