Arrange these compounds by their expected boiling point.a. CH3OH b. CH4 c. CH3Cl

The light reaction is known as the first stage of photosynthesis process. The ultimate source of electrons that are transferred during the light-dependent reactions of photosynthesis is water.

The light dependent reaction is also called the photolysis in which solar energy is converted into chemical energy in the form of ATP and NADPH. This reaction generally occurs in the grana of chloroplasts.

The ultimate source of electrons supplied to the photosynthesis reaction is water. The light energy from the sun is generally used for the splitting of water into oxygen, electrons and 4H⁺ ions.

Thus the ultimate source of the electrons in light-dependent reactions of photosynthesis is water.

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0.75 mol of water electrolysis produces a volume of 0.06155 L of oxygen gas at 100°C and 1 atm.

Electrolysis is a chemical process in which an electric current is passed through a substance to bring about a chemical change. In this process, a direct electric current is used to drive a non-spontaneous chemical reaction.

The most common example of electrolysis is the splitting of water molecules into hydrogen and oxygen gas. When an electric current is passed through water, hydrogen ions (H+) are attracted to the cathode, and oxygen ions (OH-) are attracted to the anode. These ions then combine at the electrodes to form hydrogen gas (H2) and oxygen gas (O2), respectively.

In the electrolysis of water, a 0.75 mol sample of water produces 0.75 mol of oxygen gas (O2(g)).

To find the volume of oxygen gas produced, we can use the ideal gas law, which states that PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature in Kelvin.

Given the temperature of 100°C and the pressure of 1 atm, we can convert the temperature to Kelvin and calculate the volume as follows:

T = 100°C + 273 = 373 K

V = nRT/P = 0.75 mol * 0.08206 L * atm/mol * K / 1 atm = 0.06155 L

So, 0.75 mol of water electrolysis produces a volume of 0.06155 L of oxygen gas at 100°C and 1 atm.

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The lewis structure of the CH₂O is as follows :

                 : O :

                    ||

            H :  C : H

The Hydrogen is the Group I element with the only one electron in its outermost shell. The Oxygen is the Group VI element with the six electrons in its outermost shell. The Carbon is the element of the  Group IV element with the four electrons in its outermost shell. In the lewis structure of the CH₂O the total valence electrons are 12 valence electrons.

The total number of the valence electrons in the carbon is four. The total number of the valence electrons in the oxygen is six. The total number of the valence electrons in the hydrogen is one.

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The aqueous solutions has the highest boiling point (Elevation of boiling point) is in the case of Na3PO4.

Boiling point elevation refers to the increase in the boiling point of a solvent upon the addition of a solute. When a non-volatile solute is added to a solvent, the resulting solution has a higher boiling point than that of the pure solvent. Therefore the aqueous solutions has the highest boiling point (Elevation of boiling point) is in the case of Na3PO4.

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The aqueous solutions has the highest boiling point (Elevation of boiling point) is in the case of Na₃PO₄.

Boiling point elevation refers to the increase in the boiling point of a solvent upon the addition of a solute. When a non-volatile solute is added to a solvent, the resulting solution has a higher boiling point than that of the pure solvent. Therefore the aqueous solutions has the highest boiling point (Elevation of boiling point) is in the case of Na₃PO₄.

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The empirical formula for this compound is C₄H₃O₂. This states that each C₄H₃O₂ molecule consists of 4 C atoms, 3 H atoms, and 2 O atoms.

Empirical formula

The empirical formula is a term about the simplest whole number ratio of atoms in a compound. To find out the empirical formula for the compound, you can use the following steps:

Step 1: Calculate the mass content of each element for a 100-gram molecule.

57,54 % C x 100 gram = [tex]\frac{57,54}{100}[/tex]  C x 100 gram = 57,54 gram C

4,45 % H x 100 gram = [tex]\frac{3,45}{100}[/tex]  C x 100 gram = 3,45 gram H

39,01 % O x 100 gram = [tex]\frac{39,01}{100}[/tex]  C x 100 gram = 39,01 gram O

Step 2: Calculate the moles of each element using the formula moles = atomic mass / relative atomic mass.

Moles of C = [tex]\frac{57,54 gram}{12 gram/mol}[/tex] =  4,795 mol

Moles of H = [tex]\frac{3,45 gram}{1 gram/mol}[/tex] = 3,45 mol

Moles of O = [tex]\frac{39,01 gram}{16 gram/mol}[/tex] = 2,44 mol

Step 3: Calculate the mole ratio.

   C     :    H    : O

4,795  :  3,45  : 2,44

    2    :     1,5   :    1

    4    :       3   :     2

So the empirical formula for the molecule is C₄H₃O₂.

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The reaction rate between solutions O won't be impacted by bleach (optio c). Practically speaking, a fairly specific per-iod marks the start of the reactants' phase of the "chemical reaction."

Rubber alcohol, salt water, and sugar dissolved in water are a few examples of solutions. When mixing salt and water, the salt particles become so small that they are no longer visible with the nak-ed eye, indicating that the mixture is homogenous.

A continuous variation in the relative proportions of two or more substances that is homogeneous and can be changed up to the solubility limit. Although the word "solution" is typically used to describe the liquid state of matter, it is also possible for gases and solids to form solutions.

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The hemiacetal forms when a hydroxyl group along the carbon chain reaches back and bonds to the electrophilic carbonyl carbon. As a result, five- and six-membered rings are very common in sugars. Five-membered rings are called "furanoses" and six-membered rings are called "pyranoses".

One significant class of biological molecules is carbohydrates. Although they are best known for storing energy as glucose and starch, carbohydrates also serve a variety of other functions. For instance, they provide structural support for DNA's DNA backbone. By creating molecular codes on the surfaces of cells that distinguish between our own cells and invaders, they support homebody security and defense operations. They transport specialized chemical reagents into enzymes, which carry out reactions vital to life. They're sweet in some cases.

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Alpha, beta, and protons can all particles be accelerated by an electric field. Therefore, option 3 is correct.

The physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them, is known as an electric field. It also refers to the physical field of a charged particle system.

Particle acceleration is a straightforward concept: an electric field moves a charged particle from one location to another. Because electric fields do not act on neutral particles, they can only accelerate electrons, protons, ions, and various antiparticles.

Thus, option 3 is correct.

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The relative rates of the following alkyl halides in an E1 reaction from fastest to slowest are: Tertiary alkyl halide, Secondary alkyl halide, Primary alkyl halide, Methyl halide.

Tertiary alkyl halide - Tertiary carbocations are highly stable, making them the most reactive towards E1 reactions. Secondary alkyl halide - Secondary carbocations are less stable than tertiary carbocations, but more stable than primary carbocations. Therefore, secondary alkyl halides have a moderate rate of reaction in E1 reactions. Primary alkyl halide - Primary carbocations are relatively unstable and therefore less reactive in E1 reactions than secondary or tertiary carbocations. Hence, primary alkyl halides have a slower rate of reaction in E1 reactions. Methyl halide - Methyl carbocations cannot form because they lack neighboring carbon atoms. Therefore, they do not undergo E1 reactions.

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On general basis in modern periodic table, the atomic radius decreases as we move from left to right in a period and it increases when we go down a group.

Trend-wise in modern periodic table, as we moves from left to right across a period in the modern periodic table, the ionization energy increases due to the increase in nuclear charge which results in the decrease of atomic size. Again, the decrease in the atomic size results in a more potent force of attraction between the electrons and the nucleus.

As we move down the group in the modern periodic table there is an increase in the atomic size due to the addition of an extra shell.

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Detergent, ethanol, and salt can all play important roles in extraction processes, depending on the specific type of biomolecule being extracted and the purification needs.

Detergent, ethanol, and salt can all play important roles in different types of extraction processes. Here's an overview of how each of them can be used:

Detergent: Detergents are often used to extract proteins or other biomolecules from biological samples. Detergents are able to solubilize membrane-bound proteins by disrupting the lipid bilayer of the cell membrane. This allows the proteins to be extracted into a solution. Detergents can also help to break apart protein complexes, making it easier to isolate individual proteins.

Ethanol: Ethanol is commonly used as a solvent in extractions because it can dissolve a wide range of organic compounds, including lipids and proteins. Ethanol can also be used to precipitate DNA or RNA from a solution. When added to a solution of DNA or RNA, ethanol causes the nucleic acids to clump together and form a visible precipitate, which can then be collected and further purified.

Salt: Salt is often used in DNA and RNA extractions to help remove proteins and other impurities from the sample. When salt is added to a solution, it can cause proteins to denature and precipitate out of the solution. The salt can then be removed along with the precipitated proteins. In addition, salt can help to bind DNA or RNA to a solid support, such as a column or a membrane, making it easier to isolate the nucleic acid from other components of the sample.

In summary, detergent, ethanol, and salt can all play important roles in extraction processes, depending on the specific type of biomolecule being extracted and the purification needs. Detergents are useful for solubilizing proteins, ethanol can dissolve a wide range of organic compounds, and salt can help to remove impurities and bind DNA or RNA to a solid support.

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balanced equation for the reaction of zinc with hydrochloric acid - Zn + 2HCl → ZnCl2 + H2

What is balance equation?

A balance equation is a mathematical representation of a chemical reaction, in which the number of atoms of each element involved in the reaction is shown on either side of an arrow. The equation is balanced when the number of atoms of each element is equal on both sides of the arrow. This is achieved by adjusting the coefficients of the reactants and products to obtain the same number of atoms of each element. Balance equations are used to calculate the amount of reactants and products needed to achieve a desired outcome. Balance equations are also used to calculate the amount of energy released or absorbed in a reaction.

Therefore, balanced equation for the reaction of zinc with hydrochloric acid - Zn + 2HCl → ZnCl2 + H2

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Electrotonic (local) potentials dissipate, which is one of their properties.

The internal charge that an object has and its location with respect to other electrically charged objects are what determine an object's electrical potential energy. The strength of the electric potential is determined by how much effort is needed to move an object across an electric field.

Electric potential energy is the energy that is gained when an object moves against an electric field. By dividing the potential energy by the charge, the electric potential is determined for any charge.

The farther it moves from the initial point, the less the electrotonic spread's change in potential will increase.

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Answer:

c = the specific heat capacity of the substance, (J/kg•⁰C)

not sure which one is the answer, i will just tell you the definition.

Explanation:

When hemoglobin does not have oxygen bound to it, it is termed "deoxyhemoglobin". Hemoglobin is a protein found in red blood cells that is responsible for carrying oxygen from the lungs to the tissues throughout the body. When oxygen is bound to hemoglobin, it forms a bright red-colored compound called oxyhemoglobin, which is responsible for the red color of oxygenated blood.

In contrast, when oxygen is not bound to hemoglobin, it is in a state called deoxyhemoglobin, which is a darker shade of red. This can occur in tissues that are consuming oxygen at a faster rate than it can be supplied, such as during exercise, or in situations where oxygen delivery to tissues is impaired, such as in lung or heart disease.

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The vapor pressure of the solution if the vapor pressure of water at 25°C is 18.86 torr.

It is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases. Vapor pressure lowering is the colligative property.

where,

P₀ = Vapor pressure of pure solvent

P' = Vapor pressure of solution

Xm = Mole fraction of solute → Moles of solute / Total moles

Total moles = Moles of solute + moles of solvent

Number of moles:

It is given by dividing mass over molar mass.

90.0 g  / 58.45 g/mol = 1.5398 moles NaCl

250 g / 18 g/mol = 13.89 moles H₂O

Total moles → 1.5398 + 13.89 moles = 15.43 moles

∴ Mole fraction of solute = 1.5398 / 15.43 = 0.0998

thus, i → NaCl ⇒ Na⁺ + Cl⁻  

∴ i = 2 (Van't Hoff factor, number of ions dissolved)

On substituting the values in equation (i):

23.56 torr - P' = 23.56 × 0.0998 ×2

or, P' = 18.86 torr

Thus, the vapor pressure of the solution is 18.86 torr.

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The chemical agent that can cause victims to develop blisters on their skin is a type of chemical weapon called a vesicant or blister agent.

Examples of blister agents include sulfur mustard, lewisite, and phosgene oxime. These agents cause damage to the skin and other tissues by forming a covalent bond with cellular components, leading to severe blistering and tissue damage. They are extremely toxic and can cause long-lasting health effects, making them a serious threat to human health and safety.

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This shielding is anisotropic and depends on the orientation of the chemical bond in the applied magnetic field since the distribution of electrons around the nucleus is directional. Chemical-shift anisotropy determines how the solid-state NMR lines are shaped (CSA).

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The reaction equation is PbS+4H2O2→PbSO4+4H2O

This is a redox reaction where the hydrogen peroxide (H2O2) acts as an oxidizing agent, and the lead sulfide (PbS) is oxidized to form lead sulfate (PbSO4). The hydrogen peroxide is reduced to form water (H2O). The reaction produces a white precipitate of lead sulfate, which is insoluble in water and can be easily separated from the reaction mixture.

It is worth noting that the reaction between lead sulfide and hydrogen peroxide may not occur spontaneously, and a catalyst may be needed to initiate the reaction.

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Missing parts;

using equation explain what happens when hydrogen peroxide is added to lead​ sulfide

An atomic orbital is a mathematical function that describes the probability distribution of finding an electron in an atom.

The following are the characteristics of an atomic orbital:

Probabilistic: An atomic orbital describes the probability of finding an electron at a particular point in space, rather than its exact location.

Three-dimensional: Atomic orbitals are three-dimensional functions that describe the electron distribution in all directions.

Energy level: Atomic orbitals are associated with specific energy levels, and the energy level determines the size and shape of the orbital.

Quantized: The energy levels and electron distributions in atomic orbitals are quantized, meaning that they can only have certain discrete values.

Electron cloud: Atomic orbitals can be thought of as an electron cloud, which describes the probability of finding an electron at any point within the orbital.

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On the basis of oxidation states,ranking of metals to catalyze oxidation-reduction reactions is - manganese, vanadium and titanium.

In science, the oxidation state, or oxidation number, is the speculative charge of an iota in the event that its bonds to various particles were all completely ionic. It depicts the level of oxidation (loss of electrons) of a particle in a substance compound. Reasonably, the oxidation state might be positive, negative or zero. While completely ionic bonds are not found in nature, many bonds areas of strength for show, making oxidation express a valuable indicator of charge.

The oxidation state of an atom doesn't address the "genuine" charge on that particle, or some other real nuclear property. This is especially valid for high oxidation states, where the ionization energy expected to create a duplicate positive particle is far more prominent than the energies accessible in synthetic responses.

Since,manganese exist in oxidation state from +2 to +7,so it is more reactive.Same with vanadium and titanium also,vandium have oxidation  state from +2 to +4 whereas titanium exist in +3 oxidation state only.

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The total volume of CO2 forms when 6.0L of C2H6 are combusted at STP is 12 Liter.

STP stands for Standard temperature and pressure. It refers to the nominal conditions in the atmosphere at sea level. The conditions for STP are 0 degrees Celsius and 1 atmosphere of pressure. Standard conditions for temperature and pressure refers to a specific pressure and temperature used to report on the properties of matter. These values are commonly used in experiments involving gases.

At STP condition, one mole of any substance contains 22.4 L. So, 2 moles of ethane contains 44.8 L and 4 moles of carbon dioxide contains 89.6 L. so 22.4 L of ethane is giving 89.6 L of carbon dioxide.

The volume CO2 = (6 × 89.6) /44.8

                              = 12 L

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The charge of sulfate is -2.

Sulfate is a polyatomic ion with the chemical formula SO₄²⁻. This means that it is composed of one sulfur atom (S) and four oxygen atoms (O), and has a total charge of -2.

This charge is important to consider when creating chemical compounds with sulfate, as it will affect the overall charge of the compound.

For example, when sulfate combines with a positively charged ion, such as sodium (Na⁺), it will form a neutral compound, sodium sulfate (Na₂SO₄). The charges of the individual ions (2⁺ for sodium and -2 for sulfate) will cancel each other out, resulting in a compound with no overall charge.

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Proteins are chemically broken down starting in the stomach and finishing in the small intestine. To produce more proteins, the body reuses amino acids.

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The molecular geometry of NF3 is trigonal pyramidal.

This is determined by the number of electron groups around the central atom, nitrogen (N). NF3 has four electron groups (three bonding pairs from the fluorine atoms and one lone pair on the nitrogen), which makes it fall under the category of tetrahedral electron geometry. However, because one of the electron groups is a lone pair, the molecular geometry is actually trigonal pyramidal.

The lone pair of electrons pushes the bonding pairs closer together, causing the bond angles to be slightly less than the typical 109.5 degrees in a tetrahedral structure. The resulting shape is a pyramid with a triangular base, hence the name "trigonal pyramidal."

The molecular geometry of NF3 is trigonal pyramidal due to the presence of four electron groups (three bonding pairs and one lone pair) around the central nitrogen atom.

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In 2003, the United Nations (UN) adopted the Globally Harmonized System of Classification and Labeling of Chemicals (GHS)

In 2003, the United Nations (UN) adopted the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). The GHS includes criteria for the classification of health, physical and environmental hazards, as well as specifying what information should be included on labels of hazardous chemicals as well as safety data sheets. The United States was an active participant in the development of the GHS, and is a member of the UN bodies established to maintain and coordinate implementation of the system. The official text of the GHS can be found on the UN web page.

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