Is c2h2 polar or nonpolar ?

The polyester that is formed in the reaction between ethylene glycol and phthalic anhydride is called polyethylene terephthalate (PET).

PET is a thermoplastic polymer that is used in a wide range of applications, including textile fibers, packaging films, and engineering plastics. It is formed by the condensation polymerization of ethylene glycol and terephthalic acid (or its dimethyl ester), but phthalic anhydride can also be used in place of terephthalic acid.

In the reaction between ethylene glycol and phthalic anhydride, the two monomers undergo a condensation reaction to form a linear polyester chain with ester linkages between the monomer units. This polyester chain can then undergo further reactions to form a variety of different structures and materials.

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The classification of solid are :

Sodium sulfide - ionic solid

Pure sodium - metallic solid

Frozen carbon dioxide - molecular solid

Diamond - covalent solid

The sodium sulfide that is Na₂S is the compound formed by the ionic bonding. The sodium sulfide is classified as the ionic solid. The pure sodium exhibits the metallic bonding and comes under the metallic solid. The frozen carbon dioxide also called as the dry ice is the molecular solid.

The diamond is the network of the covalent bonding. Therefore the diamonds comes under the category of the covalent solid. The covalent bonds are formed between the atoms by the sharing of the electrons.

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Water is essential to life for multiple reasons, including its ability to dissolve a wide variety of substances, play a role in chemical reactions, and regulate temperature. (All Options)

Water is a unique and versatile substance that plays a crucial role in supporting life on Earth. One of its most important properties is its ability to dissolve a wide variety of substances, which makes it a vital component of many biological processes. For example, water helps to transport essential nutrients, minerals, and waste products throughout the body. Additionally, water plays a central role in many chemical reactions, such as those that occur in metabolic processes and energy production.

Finally, water is a good conductor of heat and helps to regulate temperature, which is essential for maintaining the stability of biological systems. Overall, water is an essential component of life and its properties play a critical role in supporting the diverse range of living organisms found on Earth.

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Option d is the correct answer to this question. The amino acid Ser performs the nucleophilic attack during the chymotrypsin mechanism.

An amino acid involved in the production of proteins is ser or serine. It is a polar amino acid because it has a -amino group, a carboxyl group, and a side chain made up of a hydroxymethyl group.

Serine is essential for the synthesis of muscle tissue, proteins, and enzymes in the body. For the correct metabolism of lipids and fatty acids, serine is required. Moreover, it aids in the creation of antibodies. Several cosmetics and skin care products use serin as a natural moisturizing agent.

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The James Webb Space Telescope (JWST) is designed to take observations in the infrared part of the electromagnetic spectrum.

In physics, an energy band is a range of allowed energies that electrons in a solid material can have. In a solid material, the electrons are confined to specific energy levels, which depend on the properties of the atoms and the arrangement of the atoms in the crystal lattice. These energy levels are often referred to as "bands," because they form continuous bands of allowed energies rather than discrete energy levels. The most important energy bands in solid materials are the valence band and the conduction band. The valence band is the range of energy levels that the electrons occupy when the material is in its ground state, while the conduction band is the range of energy levels that the electrons can occupy when they are excited to a higher energy state. In an insulator, there is a large energy gap between the valence band and the conduction band, so it is difficult for electrons to move from the valence band to the conduction band and conduct electricity. In a conductor, there is only a small energy gap between the valence band and the conduction band, so electrons can move freely from the valence band to the conduction band and conduct electricity. In a semiconductor, the energy gap is intermediate, so the conductivity can be controlled by doping or applying a voltage.

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Specifically, it will operate in the wavelength range of 0.6 to 28.5 micrometers, which is longer than the visible light range that the Hubble Space Telescope observes. The infrared band is particularly useful for studying the formation of galaxies and stars, the evolution of the universe, and the properties of exoplanets, among other things.

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Answer: True

Explanation: The amount of energy required to remove an electron from an isolated atom or molecule is the ionization potential. There is an ionization energy for each successive electron removed.

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The compound CS₂ is called carbon disulfide in chemistry.

With the chemical formula CS₂ and the structural formula S=C=S, carbon disulfide (commonly known as carbon disulfide) is a significant inorganic molecule in chemistry. It is a white liquid that serves as a component in the synthesis of organic compounds.

Several industries utilise carbon disulfide. Many compound like Rubber, viscose rayon, cellophane are made up of it.

The group of inorganic substances known as other non-metal sulfides includes CS₂. These are inorganic compounds with a sulfur atom in an oxidation state of 2, where the most massive atom linked to the oxygen is a member of the other non-metals group.

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AgNO₃ is soluble in water .

Strong ionic bonds combine to generate a silver nitrate molecule. It indicates that the compound's two constituents, silver and nitrate, retain opposing charges and are drawn to one another.

Thus, nitrate is negatively charged whereas silver is positively charged. Because it possesses an additional ion, silver acquires a positive charge during the production of silver nitrate. In contrast, nitrate loses an ion.

Consequently, their charges are combined and balanced. Yet, the silver and nitrate separate when submerged in water. This explains why silver nitrate dissolves in water.

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Types of isomers that differ in the arrangement of covalent atoms are structural isomers.

Isomers are compounds with the same molecular formula but different structural formulas and do not necessarily share the same properties. Generally, isomers have similar chemical properties to each other. In general, isomers are divided into two, namely structural isomers and geometric isomers.

Structural isomers occur due to differences in the arrangement of structural bonds between atoms and functional groups in a molecule. There are three types of structural isomers namely skeletal isomers, positional isomers and functional group isomers.

Geometric isomers are isomers that are caused by a limitation of free rotation of a bond in a molecule. In contrast to structural isomers, these isomers occur only in compounds that have a rigid bond with two dissimilar sides and, usually, occur in alkenes.

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Species diversity in aquatic ecosystems is significantly affected by the increased water temperature. This is because warm water holds less dissolved oxygen than cool water, and may not contain enough dissolved oxygen for the survival of different species of aquatic life.

An ecosystem may be defined as a type of place or an area where members of different species live together and interact with one another for the purpose of food, shelter, space, mating partner, and other resources.

The solubility of oxygen and other gases will decrease as temperature increases. This means that colder lakes and streams can hold more dissolved oxygen than warmer waters. If water is too warm, it will not hold enough oxygen for aquatic organisms to survive.

Some compounds are also more toxic to aquatic life at higher temperatures. So, warm stream water is can affect the aquatic life in the stream.

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Answer: False

When salt water or any other liquid that has some type of particle in it, freezes the salt or particles sink to the top or bottom, depending on weather it is more dense than the liquid it is meaning B. False is our correct answer.

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Option b , represents the second ionization energy of magnesium.

Ionization energy is often measured in electronvolts (eV) or joules in physics (J). The energy required to ionise a mole of atoms or molecules is given in chemistry as kilojoules per mole (kJ/mol) or kilocalories per mole (kcal/mol), respectively.

Two periodic trends that adhere to the laws of Coulombic attraction are revealed by comparing the ionisation energy of atoms in the periodic table. In a given time, ionisation energy typically increases from left to right (that is, row). In a particular group, ionisation energy typically decreases from top to bottom (that is, column).

The latter pattern is caused by the outer electron shell moving away from the nucleus more and farther, with an additional inner electron shell being added every row as one proceeds down the column.

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The atoms of one element are distinguished from another based on their atomic number, Each element has a unique number of protons in its nucleus, which gives it a unique atomic number.

For example, all carbon atoms have 6 protons in their nucleus, which gives carbon its unique atomic number of 6. All oxygen atoms have 8 protons in their nucleus, which gives oxygen its unique atomic number of 8. This means that the atomic number of an element determines its chemical properties and its position in the periodic table.

In addition to the number of protons, atoms of the same element can have different numbers of neutrons in their nucleus, which gives rise to different isotopes of the element.

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The answer is (D) MgBr2 < BrF5 < SbCI5 < NH3 with the compounds listed in order of increasing boiling point

D) MgBr2 < BrF5 < SbCI5 < NH3

This ordering is consistent with the strengths of intermolecular forces in each compound. MgBr2 has the highest boiling point due to its strong ionic bonds, followed by BrF5 with its strong dipole-dipole interactions. SbCI5 has weaker dipole-dipole interactions than BrF5, so it has a lower boiling point. NH3 has the weakest intermolecular forces of all the compounds listed, so it has the lowest boiling point.

The boiling point of a compound is primarily determined by the strength of its intermolecular forces. Compounds with stronger intermolecular forces will have higher boiling points, while compounds with weaker intermolecular forces will have lower boiling points.

Therefore, the correct answer is (D) MgBr2 < BrF5 < SbCI5 < NH3.

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The neutrons are sub atomic particles. The particles which are smaller in size than an atom is known as sub atomic particles. The isotope of beryllium with mass number 9, i.e., ⁹Be has 5 neutrons.

The isotopes are defined as the chemical elements which have the same atomic numbers but different mass numbers. In isotopes, the number of neutrons differ from the number of protons. The physical properties of the elements are different.

'Be' has 3 isotopes, they are ⁷Be, ⁹Be and ¹⁰Be. Among these isotopes, ⁹Be is found to have 5 neutrons and 4 protons or electrons.

Thus ⁹Be is the most common isotope with 5 neutrons.

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The law on multiple proportions is shown with the chemical pair CO and CO2.

Three double bonds and also no lone pairs at the sulphur are present in SO3. That is altered by adding two extra electrons, which add two more electrons to sulphur. Sulfate trioxide is known as SO3, and SO3-2 is known as the sulfite ion.

Similar elements can combine to form compounds, such as carbon dioxide and carbon monoxide (CO) (CO2). Both compounds are composed of carbon (C) and oxygen (O) atoms, but their carbon to oxygen ratios are different. This serves as an example of the multiple proportions law.

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The general name for H₂SO₄ is sulfuric acid.

Sulfuric acid is a strong acid that is commonly used in a wide range of industrial and laboratory applications, such as in the production of fertilizers, dyes, detergents, and explosives, among others. It is a dense, oily, and colorless liquid that is soluble in water and has a very high boiling point of 337 °C (639 °F).

It is also used as a laboratory reagent for various chemical reactions, and as an electrolyte in lead-acid batteries. It is a very strong acid that is capable of reacting with most metals, and it can cause severe burns and eye damage upon contact with the skin or eyes. Therefore, it should be handled with extreme caution and protective equipment should always be used when working with it.

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Avogadro's law states that 2.2075 moles must be added to the container in order to raise the pressure to 325 kPa.

The general number of atoms or molecules has a direct relationship to the volume occupied by a gas under constant temperature and pressure, according to Avogadro's law, a gas law.

Given that it links temperature, pressure, volume, and substance amount, it is closely related to the ideal gas equation.

V ∝ n,

The straight line graph of volume versus moles is a straight line passing through the origin which implies that zero moles of gas occupy zero volume.

As 1 atm = 101.325 kPa

325 kPa = 325/101.325 = 3.2075 atm, as at STP 1 atm =22.4 liter.

Applying Avogadro's law,

n₂ = 71.848 × 1/22.4 = 3.2075 moles .

To estimate moles to be added, we get

3.2075 - 1 = 2.2075 moles.

Therefore, to increase the pressure in the container to 325 kPa, 2.2075 moles of gas must be supplied.

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Bond order of N2 is 3. It is a naturally occurring as a diatomic gas. N2 has a triple covalent bond between the nitrogen atoms.

The bond order is defined as a formal measure of the multiplicity of a covalent bond between two atoms. Bond order is the difference between the numbers of electron pairs in bonding and antibonding molecular orbitals. It is the number of bonding pairs of electrons between  the two atoms. A single bond has a bond order of one and a double bond has a bond order of two and a triple bond has a bond order of three in a covalent bond. A high bond order indicates that there is more attraction between the electrons. A higher bond order means that the atoms are held more tightly together. It indicates the stability of the bond. There is the greater the stability with higher bond order.

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Answer:

Green house gas emissions but do generate heat to produce steamsince power plans don't burn fuel, they don't produce greenhouse

Explanation:

Nuclear power plants produce no greenhouse gas emissions but they do generate electricity.

Nuclear power plants are a type of power generation facility that harnesses the energy from nuclear reactions to produce electricity.

Unlike fossil fuel power plants, which burn coal, oil, or natural gas and release greenhouse gases into the atmosphere, nuclear power plants do not emit any greenhouse gases during their operation.

This is because nuclear power plants rely on nuclear fission, a process where the nucleus of an atom is split, to generate heat.

The heat is then used to produce steam, which drives turbines connected to generators, ultimately generating electricity.

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Two atoms with various electronegativity levels. The electrons in a bond are not distributed equally when one atom is bound to a more electronegative atom. Polar covalent bonds are this kind of bond.

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The molality of the solution that is formed by dissolving 27. 8 g of lii in 500. 0 ml of water is 5.56 moles/kg.

Molality is defined as the number of moles of solute per kilogram of solvent. To calculate the molality of a solution, we first need to determine the number of moles of solute in the solution and then divide that number by the mass of the solvent. In this case, the solute is LiI (lithium iodide) and the solvent is water.

The number of moles of LiI can be calculated using its molar mass:

The mass of the water can be calculated using its density:

The molality of the solution is then calculated as follows:

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The rank of these four conformations in order of lowest to highest energy is:

1.Syn

2.Gauche

3.Gauche-gauche

4.Anti

The conformations of 2-methylbutane can be ranked in order of energy by comparing the energies of different arrangements of its atoms. The energy of a conformation is determined by the strength of the intermolecular forces between its atoms and the bond angles and distances between them. The following are the four conformations of 2-methylbutane Anti, Gauche, Gauche-gauche and Syn

Of these four conformations, the syn conformation has the lowest energy because the methyl group and the hydrogen atom are on the same side of the molecule, which reduces the steric strain between them. The gauche conformation has a slightly higher energy because the methyl group and the hydrogen atom are on opposite sides of the molecule, increasing the steric strain. The gauche-gauche conformation has an even higher energy because the strain is further increased by the presence of two gauche conformations.

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The methanol does have the low boiling point because of  the very strong hydrogen bonds in the methanol.

The methanol has the low boiling point as it has the very strong hydrogen bonding. The Methanol is the alcohol , the Hydrogen bonds are present in the alcohol because of the hydrogen attached with the electronegative atom search of the oxygen. The molecular formula of the methanol is CH₃OH. The Hydrogen bonding occurs when the  significant amount of the positive charge will building up on the hydrogen atom.

Thus, due to the hydrogen bonding the boiling point of the methanol is very low.

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Some common protic solvents used in SN1 reactions include water, alcohols, and carboxylic acids.

In organic chemistry, SN1 reactions are a type of substitution reaction that occurs in a protic solvent.

A protic solvent is a solvent that has a hydrogen atom bonded to an electronegative atom, such as oxygen or nitrogen. This allows the solvent to form hydrogen bonds with the reactants and stabilize the transition state of the reaction.

These solvents are able to stabilize the carbocation intermediate that is formed during the reaction, which helps to increase the reaction rate.

It is important to note that the choice of solvent can have a significant impact on the rate and outcome of the reaction. For example, a polar protic solvent like water will favor the SN1 reaction, while a polar aprotic solvent like acetone will favor the SN2 reaction.

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The average atomic mass is calculated on the basis of the average mass of all the isotopes present in the nature. Here the average mass is closer to 50 amu.

The isotopes are defined as the chemical elements which have the same atomic numbers but different mass numbers. The number of protons or electrons in them are same but the number of neutrons will be different.

₅₀X = 70% = 0.70

₅₄X = 30% = 0.30

Average atomic mass = (50 × 0.70) + (54 × 0.30) = 51.2

Thus the average atomic mass is closer to the first isotope of mass 50 amu. Because of the higher percent abundance of this isotope.

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The order of increasing boiling point be Mgbr2 < Brf5 < SbCl2 < Nh3.

Atoms within a molecule are held together by intramolecular forces. There are forces between molecules known as intermolecular forces. Between nearby particles, there are forces of attraction or repulsion known as intermolecular forces (atoms, molecules, or ions).

It can be helpful to distinguish between intramolecular and intermolecular processes. While two or more reaction sites within the same molecule are engaged in intramolecular reactions, covalency changes occur in two distinct molecules during intermolecular reactions.

Atoms are held together to form molecules by intramolecular forces. Molecules are held together by intermolecular interactions to create solids and liquids.

Intramolecular bonds are the covalent connections that hold the hydrogen and oxygen atoms of a water molecule together.

Therefore, the correct answer is option d. Mgbr2 < Brf5 < SbCl2 < Nh3

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