Oxygen (o2) gas within a piston-cylinder assembly undergoes and expansion from a valume v1 = 0.01 m3 to a volume v2=0.03m3. the reltionship between pressure and volume during the process is p=

By ideal gas approximation, the temperature of methane gas is 110.71 K.

We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation

P . V = n . R . T

where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.

From the question above, we know that

V = 20 L = 0.02 m³

P = 92 kPa = 92 x 10³ Pa

n = 2 moles

By substituting the following parameters, we get

P . V = n . R . T

92 x 10³ . 0.02 = 2 . 8.31 . T

16.62T = 1840

T = 110.71 K

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Answer:

500

Explanation:

because it is

Once fermentation completed, a hydrometer of a stout indicated a specific gravity of 1.15.

Specific gravity = density of liquid/ density of water at 4°C

= mass of liquid/(volume*density of water)

specific weight = mass = 1150 kg.

What is specific gravity?

The ratio of a substance's density to that of water at a certain temperature is what is known as specific gravity, which is also sometimes known as relative gravity, which is a dimensionless quantity (has no unit). Since water has the maximum density at 4°C, 1000 kg/m3, in SI system. this temperature is frequently used as a benchmark.

The ratio of weight to volume is referred to as specific weight. In addition, the relationship between density and gravitational acceleration can be used to define specific weight. Contrary to density, specific weight depends on the gravitational acceleration (g), whose magnitude changes with altitude and latitude.

Specific gravity = density of liquid/ density of water at 4°C

= mass of liquid/(volume*density of water)

Thus specific weight = mass = 1150 kg.

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Transmission is referred to as the uninterrupted passage of insolation through the atmosphere or water.

This can be defined as the process in which solar energy is incident onto objects which are usually in the form of waves. This is made possible through the process of heat transfer which is referred to as radiation in a medium such as air, water etc.

This is transmitted to the environment as it serves as a source of energy for the organisms which are present in the ecosystem. It is usually uninterrupted and are absorbed by plants during the process of photosynthesis.

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C-H sp2 and C=C double bond stretching bonds will disappear.

The examination of infrared light's interactions with molecules is known as infrared spectroscopy. It's frequently utilized to find numerous bonds and functional groups in both organic and inorganic compounds.

Each compound has a distinctive light absorption area that acts as its unique fingerprint. It can be used to identify functional groups in a molecule because the majority of them exhibit absorption bands in this range (400-1400cm-1).

This method can be used to evaluate whether the addition reaction of bromine (Br2) with 1-pentene has completed because the spectral bands for the C-H sp2 and C=C bonds will vanish.

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Answer:

positive and negative

Explanation:

Among the following compounds, Sodium nitrate and CH₄ are neither an acid nor a base.

Sodium nitrate is an alkali metal salt which is made from the neutralization of a strong base (NaOH) with a strong acid (HNO₃). It has a pH value equal to 7. Therefore, sodium nitrate is neutral.

CH₄ has a neutral pH, of around 7. If a substance is acidic in nature, it must contain in the form where that can be released into water. But CH₄ is not acidic or basic as all the four hydrogen are bound tightly to the carbon atom and cannot be released, i.e., CH₄ has all of its valence electrons in bonding pair and bonding pairs are too stable to donate under normal conditions.

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Quantitative Qualitative

Male parrotfish 1.3 meters in length

Brain coral over 2 meters in circumference

Sea anemone tentacles have an average length of 7 cm

Qualitative

Angelfish has swirl patterns of black and white

Angelfish swimming in large schools

Male parrotfish has large scales and scar near base of

tail fin

Scar on parrotfish may have been caused by a bite from

another fish

Parrotfish is afraid of brain coral because the fish will

not touch the coral

Sea anemone have purple tipped tentacles

My hand brushed up against sea anemone tentacle and

it began to hurt

Most of the sand near the coral reef has been washed

away by the tide

Few divers visit this coral reef because there is no litter

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A "p" orbital has two regions or lobes of high electron probability, on either side of the nucleus. This gives the orbital a dum---bbell shape with a nodal plane or region of zero electron density at the nucleus.

The term orbital refers to a region of electron density. It is the region where it is possible to find an electron in the nucleus. Note that the atom is composed of electrons, protons and neutrons. The electrons are found in the shells while the protons and neutrons are found in the nucleus.

The quantum numbers are describe the position of an electron in an atom. There are flour sets of quantum numbers and one of them is the orbital quantum numbers which describes the orbital where the electron is found. Various orbitals. have various shapes and appearances which determines the number of electrons that they can contain.

A "p" orbital has two regions or lobes of high electron probability, on either side of the nucleus. This gives the orbital a dum--bbell shape with a nodal plane or region of zero electron density at the nucleus.

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Missing parts;

A "p" orbital has _______ regions or lobes of high electron probability, on either side of the nucleus. This gives the orbital a dum--+bbell shape with a(n) _______ or region of zero electron density at the nucleus.

If the solute concentration for a particular molecule inside of the cell is 100mm and the concentration for this same molecule is 10mm, water will move into the cell.

What is osmosis?

Osmosis is the naturally occurring net movement or diffusion of solvent molecules over a selectively permeable membrane from an area of high water potential to a region of low water potential, in a manner that attempts to balance the solute concentrations on the two sides.

Both osmosis and diffusion are passive transport processes, which means they don't need any additional energy to take place. Particles transfer from a region of higher concentration to one of lower concentration through osmosis and diffusion, respectively.

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The reaction of an amide with alcohol cannot be used to prepare an ester.

Ester can be defined as a compound that is achieved by the reaction of ternary acid with a chemical compound having -OH(hydroxide) as the functional group.

The amides generally do not react with alcohol because the amides have poor leaving group properties so the preparation of esters is not possible.

The acid halides undergo a nucleophilic substitution reaction with alcohol which results in the formation of the ester with HCL as the by-product.

Fischer esterification is a process that uses an acid catalyst to prepare esters from the reaction of carboxylic acid and alcohol. The hydroxide bond of carboxylic acid and the hydrogen bond of the alcohol is broken and react to form water resulting in esterification.

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Driving instruction can be assisted by using computer simulations of the steering wheel, brakes, and gas pedal. The car's response is predicted by computer models after the controls detect the applied forces. This model has the benefit of simulating how the car turns when the steering wheel is rotated in various directions.

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This is because the eluting strength of a solvent polarity is essentially connected to how firmly it adsorbs onto the adsorbent.

What is tlc plate?

A TLC plate is a piece of glass, metal, or plastic that has been lightly covered with a solid adsorbent (usually silica or alumina). The bottom of this plate has a little space where the combination to be tested will be placed.

Thin Layer Chromatography TLC is a method that is frequently employed in synthetic chemistry to identify compounds, assess their purity, and monitor the course of a reaction. Additionally, it enables the optimization of the solvent system for a specific separation issue.

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Hydrogen chloride gas and oxygen react to form water vapor and chlorine gas.

What is Hydrogen chloride?

A hydrogen halide is the substance hydrogen chloride, which has the chemical formula HCl. It is a colourless gas at room temperature that reacts with water vapour in the air to produce white fumes of hydrochloric acid. In technology and industry, hydrochloric acid and hydrogen chloride gas are crucial. The formula HCl is also frequently used to refer to hydrochloric acid, an aqueous solution of hydrogen chloride.

4.75 litres of water would be created as a result of this process.

Given: HCl gas volume = 9.5 L

The chemical process will be balanced if:

4HCl + O2 → 2H2O + 2Cl2

As we are aware, 1 mole of gas at STP occupies 22.4 L of gas.

According to the stoichiometry, 4 litres of HCl gas react to produce 2 litres of chlorine.

As a result, 9.5 litres of HCl gas react to produce 9.5*2/4 litres of Cl.

Therefore, 4.75 litres of Cl would be created by this process.

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Hydrogen bonds do not form between two hydrogen atoms. where do hydrogen bonds form?

hydrogen bonds act between adjacent molecules and between atoms of the same molecule. hydrogen bonds form between a slight positive change on the hydrogen atom of a polar covalent bond.

What is molecules?

According to the context, the term may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms held together by the attractive forces known as chemical bonds.

Therefore,

Hydrogen bonds do not form between two hydrogen atoms. where do hydrogen bonds form?

hydrogen bonds act between adjacent molecules and between atoms of the same molecule. hydrogen bonds form between a slight positive change on the hydrogen atom of a polar covalent bond and a slight negative charge on an oxygen atom of another polar covalent bond.

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(a) When electrons are in their lowest energy state, we say that they are in _________.

(b) Sometimes, when ________ energy such as ________ or electricity is applied to the atom, the electrons absorb energy and transition to an _________ state.

(c) The electrons can not sustain this higher energy state for so long, so eventually ________ occurs.

(d) As a result, the electrons release energy in the form of a ______ and return back to ____.

(e) The jump between the high energy state to a lower energy state is called a _________.

(a) Ground State

(b) higher energy , excited state

(c) unstability

(d) light , ground state

(e) excited state absorption

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The correct answer is d) none of these. Hexokinase is catalyzed to produce glycolysis.

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To obtain pH 8, multiply the [H+] concentration at pH 6 by 0.01

From the question given above, the following data were obtained:

pH = –Log [H+]

8 = –Log [H+]

Multiply through by –1

–8 = Log [H+]

Take the anti-log of –8

[H+] = anti-log (–8)

[H+] = 1×10⁻⁸ M

pH = –Log [H+]

6 = –Log [H+]

Multiply through by –1

–6 = Log [H+]

Take the anti-log of –6

[H+] = anti-log (–6)

[H+] = 1×10⁻⁶ M

[H+] at pH 8 / [H+] at pH 6 = 1×10⁻⁸ / 1×10⁻⁶

[H+] at pH 8 / [H+] at pH 6 = 0.01

Cross multiply

[H+] at pH 8 = 0.01 × [H+] at pH 6

Thus, to obtain pH 8, multiply the [H+] at pH 6 by 0.01

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Cobalt-60 is composed of 27 protons, 33 neutrons, and 27 electrons.

Atom which is heavy   have more neutrons than protons, but the number of electrons in an atom is always equal to the number of protons in an atom. So an atom  is electrically neutral.

Electrons are  negative as they behave in an electric field. In an electric field, an electron will move from the negative pole to the positive pole , by convention it  becomes a negative charge.

Electrons are atomic particle with a negative charge. Protons are atomic particle with a positive charge. Protons are bind together in an atom's nucleus because of strong nu-cleric force.Neutrons are the atomic particles which are neutrally charged.

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Try 35% ethyl acetate to see the substance present in it is more polar ,which on increasing the concentration of ethyl acetate to give a second spot.

The acetate ester produced when acetic acid and ethanol react is termed as ethyl acetate. It functions as an EC 3.4.19.3 (pyro glutamyl-peptidase I) regulator, a metabolite, and a Saccharomyces cerevisiae metabolite in addition to being a polar aprotic solvent. It is a volatile organic chemical, an ethyl ester, and an acetate ester.

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The complete question is :

You use 25% ethyl acetate (an ester) in hexane to run a tlc and obtain a single round spot with an Rf of 0.9 for the main compound. What would you do?

If a reaction takes several days to occur without an enzyme it can occur in a few seconds with an enzyme.

Thus, If a reaction takes several days to occur without an enzyme it can occur in a few seconds with an enzyme.

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The assertion it is true that ' the  covalent bonds linking distant cysteine amino acid residues in protein tertiary structures .

In the tertiary structure, a protein disulfide isomerase forms a disulfide link between the two -SH groups when two cysteines are placed near together . The disulfide bond can be regarded as a component of the polypeptide of amino acid , which makes up the fundamental structure of proteins , due to its nature .

Cysteine plays a clear role in the tertiary structure of protein s. These residues build disulfide bridges that connect the polypeptide chain fragments , some of which are situated widely apart from one another in terms of their fundamental structure .

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The speed of diffusion of gases is faster at a higher temperature and when the molecular mass of the gas is lower.

Transport that is done passively is called diffusion. Unless the concentration is uniform throughout a space, a single material goes from an area of high concentration to one of low concentration.

Because thermal energy is a function of temperature, molecules move randomly and continuously based on their mass, their surroundings, and their internal energy. This motion takes into consideration the diffusion of molecules across the medium in which they are situated. A material moves into any place that is open to it until it fills the entire area equally.

Molecules will continue to move about in a region after a material has entirely diffused across it, eliminating the gradient of concentration. However, there will not be any net molecule movement from one location to another. We refer to this absence of a gradient of concentration where there is no net movement of the material as dynamic equilibrium. Although diffusion will continue when a substance's concentration gradient is present, a number of things influence the diffusion rate:

(i) Molecular mass: Since heavier molecules travel more slowly, they diffuse more slowly as a result. For lighter molecules, diffusion occurs quicker.

(ii) Temperature: Higher temperatures boost energy, which in turn causes molecules to move more quickly and speed up the diffusion process. Lower temperatures reduce the energy of the molecules, which lowers the diffusion rate.

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Answer:

b) no change; an increase

Explanation:

Kinetic energy does not change but potential energy increases at melting point.

The order to show the precipitation of halite from water are given below.

What is precipitation ?

Precipitation is the process of changing a dissolved substance from a super-saturated solution to an insoluble solid in an aqueous solution. Precipitate refers to the produced solid. The chemical agent that initiates the precipitation in an inorganic chemical process is referred to as the precipitant.

Step 1: Seawater starts to evaporate.

Step 2: Na cations and Cl anions concentrate as water molecules leave the liquid state and are left behind.

Step 3: Cl anions and Na cations move toward one another and start to bind.

Step 4: The resulting NaCl pairs join and start to form a crystal of halite, an ordered structure.

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Question:

Rank the following in order to show the precipitation of halite from water. Place the first event at the top and the last event at the bottom.

Answer:

d. 2-  

when it forms an ion.

Explanation:

The products of the first and second alkylation event are still very active alkylation agents.

Why is it so difficult to control the alkylation of primary amines in an sn2-type reaction manifold?

The products of the first and second alkylation event are still very active alkylation agents.

Primary and secondary formed amines by alkylation have more nucleophilic N (+I of alkyl group) which can further react with alkyl halide to give alkylation. Thus the reaction gives tertiary and quaternary amines.

Explanation:

The alkylation of ammonia during the manufacture of amine prevents the synthesis of secondary and tertiary amine. The Carbyl Amine Test is used to test it.

Because they react with alcoholic KOH, secondary and tertiary amine production fails to pass the carbylamine test.

The carbbylamine test is a test for identifying primary amines.

In this heating, an amine is present while the substance is being heated with chloroform in a basic solution.

It can be detected by the isocyanide's distinctively bad odor.

A positive carbylamine test will be produced by primary amines such isopropyl amine.

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The density of aluminum 2.7 g/cm3 in kilograms per cubic meter is  2700 [tex]kg/m^{3}[/tex] .

A substance's density is defined as its mass per unit of volume. Density is most frequently represented by the symbol, however Latin letter D may also be used. The formula for density is mass divided by volume:

ρ = M/V

where m is the mass and V is the volume.

The kilogramme is equal to one gramme divided by one thousand.

So, (2.7/1)×(1000000/1000)

= 2700 [tex]kg/m^{3}[/tex]

Therefore, the density of aluminum 2.7 g/cm3 in kilograms per cubic meter is  2700 [tex]kg/m^{3}[/tex] .

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Answer:

32 degrees

Explanation:

Answer:

Water changes to Ice at 0 degree celcius

Explanation:

Hope it helps!!!

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