ASAPP!!! CHEM HW HERE

A new element was discovered on the planet zeb ii. The name of the element zebnium, and the symbol of the element, is zb. The formula for the zebnite ion is ZbO³⁻₃.

Chemical elements are a substance that is present in the free form or mixed form in the earth's crust. They are represented in the periodic table.

The ion is the charged form of the element. So it will contain a negative or positive sign in with the charge in the compound.

Thus, if the formula for the zebnate ion is zbo43-, The formula for the zebnite ion is ZbO³⁻₃.

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The melting points of the products obtained ranged from 135 to 137, indicating that the compound is probably benzoin since the melting points of the products are very similar to those of benzoin (135 to 137). The melting point range of benzoin is closer to the product than that of hydroxybenzoic acid.

Benzoin is the sap (gum resin) that comes from cuts withinside the trunk of bushes that belong to the Styrax family. Benzoin is used at the pores and skin for ulcers, mattress sores (strain ulcers), cracked pores and skin, and lots of different conditions, however, there may be no correct medical proof to aid those uses.

Benzoin is on occasion referred to as gum benzoin or gum benjamin, and in India Sambrani or loban, aleven though loban is, thru Arabic lubān, a frequent time period for frankincense-kind incense, e.g., aromatic tree resin. Benzoin is likewise referred to as storax, now no longer to be harassed with the balsam of the equal call acquired from the Hamamelidaceae family.

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Rocks are wedged apart by plant roots that grow through fissures in quest of water and minerals. Additionally, some fungus, lichens, and plants create acids and other substances that help the chemical weathering of earth minerals. Root systems restrain by adhering to and stabilizing rocks and soils.

How do plants promote mechanical and chemical weathering?

Chemical and mechanical weathering can be brought on by plants. Plants' roots penetrate rocks and cause them to fracture as a result of mechanical weathering. It may also occur on sidewalks or in streets. Plants produce chemical weathering by releasing acids or other chemicals through their roots onto rocks, causing the rocks to fracture and develop fissures.Chemical weathering is also brought on by animals and plants. Plant roots draw components from the minerals as they absorb nutrition. The rock undergoes a chemical alteration as a result.

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Answer: gas

Explanation:

Solid calcium carbide, cac2, reacts with water to form an aqueous solution of calcium hydroxide and acetylene gas, c2h2

CaC2(s)+2H2O(l)→Ca(OH)2(aq)+C2H2(g)

A solution is a homogeneous mixture of two or more components with particle sizes less than 1 nm. Common examples of solutions are the sugar in water and salt in water, soda water, etc. All components appear as one phase in the solution.

Examples of solutions include salt water, rubbing alcohol, and sugar dissolved in water. If you mix salt and water and look closely, you will not see any salt particles and you will have a homogeneous mixture.

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If this molecule of dna originated as a linear molecule with a linking number (l) of 30, which was then circularized and unwound, the l for the unwound circular molecule would be 28.

As unwound circular DNA would result in a reduction of 2 linking numbers, the answer should be 28, since the linking number is constant for a closed supercoiled DNA molecule.

30 - 2 = 28

Nucleotide molecules are the building blocks of DNA. Each nucleotide consists of three parts: a sugar molecule, a nitrogen base, and a phosphate group, which is made up of one phosphorus atom bound to four oxygen atoms. The "letters" that make up the genetic code of our DNA are adenine (A), thymine (T), guanine (G), and cytosine (C), which are the four different types of nitrogen bases.

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The molecules in a sample of solid so2 are attracted to each other by a combination of London forces and dipole-dipole interactions.

Other names for London dispersion forces include dispersion forces, London forces, fluctuation induced dipole bonds, instantaneous dipole-induced dipole forces, and weakly van der Waals forces. Since the electrons are often arranged symmetrically with regard to the nucleus, they serve as a form of electrically symmetric force between atoms and molecules.

Dipole-dipole interactions, which result from the close association of induced or permanent dipoles, are weak interactions. Van der Waals interactions are the name given to these forces taken as a whole. These interactions are widespread in proteins and range widely in strength.

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Suppose that the gene for a protein 500 amino acids in length undergoes a mutation. If the mutation causes the synthesis of a mutant protein in which just one of the 500 amino acids is incorrect.

The mutation is a condition in which there are changes in the DNA and gene. These changes are due to genetic mutation and other bio factors and radiation.

The protein may be folded incorrectly. And the protein will not attain its old structure. Because denature is an irreversible process and does not get the structure of its before.

Thus, the statement is incorrect.

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1.08 x 10²¹ molecules of methionine are present for every 1.0 mole of glycine in the sample.

Given data -

Glycine in the sample = 1.0 mole

Avogadro's number = 1.8 x 10⁻³ moles (we know)

To find the number of molecules of methionine , multiply the molar ratio by the Avogadro's number.

Number of molecules = Avogadro's number x molar ratio

                                     = (1.8 x 10⁻³ moles) x (6.02 x 10²³ molecules/mole)

                                     = 1.08 x 10²¹

Methionine is an essential amino acids for human. For the growth of new blood vessels and for he supplementation, it is an important  amino acid. Too much methionine reslts in the damage to the brain and might be fatal.

Glycine is also an amino acid which has only one single hydrogen as its side chain. It is used in the treatment of some rare metabolic disorders and schizoprenia, stroke, etc.

Glycine is responsible to reduce the levels of methionine in the blood. Glycine is considered a precursor for many necessary metabolites such as purines, glutathione, creatinine and porphyrins. It acts as a neurotransmitter in CNS.

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Electrons ruminate around the nucleus in particular circular path known as orbit called shell.

Electronic configuration is the dispense of electrons.

Electronic configuration is also known as electronic structure.

Also termed as spatial methodize.

More than one orbital in the electron shell is known as subshell, they have similar energy level.

In Electronic configuration there are four shell present namely k,l,m,n and there are 4 sub-shell namely s,p,d,f.

As we know that every subshell fills gradually s max 2 electrons p - 6 , d - 10 and f - 14.

So,

According to questions,

Thge element has configuration 1s2 2s2 2p4 hence 8 electrons.

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Amino acids are built around a central Carbon atom bonded to a Hydrogen atom and three other groups of atoms.

Amino acids are molecules that are joined together in chains that combine to form proteins, and when these proteins are digested or broken down, the amino acids are used up.

Amino acids and proteins are essential for all living things, from microbes to humans. They make up approximately 50% of our solid body mass; they are the next largest component of our body after water.

They are classified into three groups:

The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.

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Wastewater, another name for liquid waste, has a very diverse composition that primarily depends on its source. Residential, commercial, and industrial regions are the three primary sources in towns and cities.

What are liquid wastes?

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Phosgene was used during the World War I as a poisonous gas. It can be prepared by the action of sunlight on a mixture of carbon monoxide and chlorine gases. Phosgene has the following elemental composition by weight: 12.14% C, 16.17% O and 71.69% chlorine. Its molecular weight is 98.9 g mol-1.

Phosgene is a foremost industrial chemical used to make plastics and pesticides. At room temperature (70°F), phosgene is a toxic gas. With cooling and pressure, phosgene fuel can be converted into a liquid so that it can be shipped and stored.

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The purpose of washing the organic layer with saturated sodium chloride is to remove any of the unreacted benzoic acid

One of the most prevalent minerals on Earth is sodium chloride (NaCl), also known as salt. It is a crucial nutrient for many animals and plants. Seawater and subterranean rock formations are also naturally sources of sodium chloride.

In order to keep patients from becoming dehydrated, sodium chloride, a vital nutrient, is utilized in healthcare. It is employed as a spice to boost flavor and as a food preservative. Additionally, sodium chloride is employed in manufacturing to create polymers and other goods. Additionally, it is employed to de-ice sidewalks and highways.

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The compound would be most easily formulated as an aqueous solution used to quickly provide energy to an athlete is carbohydrate.

carbohydrate strategy is used for athletes to maximize the storage of energy , in form of glycogen, in muscles. simple carbohydrates are simple sugar such as fructose and glucose.Every athletes anywhere should consume 3 - 12 gm per kilo weight throughout the day, depending on their training routine.

Carbohydrates provide energy for the body including muscles , brain, nerves and other tissues present in body.thus, carbohydrates acts  a master fuel in body.

carbohydrates are used for energy (glucose). athlete drinks contain carbohydrates ans electrolytes.

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When the carboxyl group of fatty acids reacts in a dehydration synthesis reaction with the hydroxide group of glycerol, fats, or oils are formed.

Fats and oils are made up of fatty acids and glycerol.

A fatty acid has a carboxyl group attached to a long chain of carbon atoms.

Based on the presence or absence of double bonds, fatty acids are of two types, saturated (without double bond) or unsaturated (with one or more C=C double bonds), as shown in the adjoining diagram.

Glycerol is chemically trihydroxy propane. It has three hydroxyl groups.

When the carboxylic group of fatty reacts in a dehydration synthesis reaction with the hydroxyl group of glycerol, fats or oils are formed. When these groups react, an ester bond is formed.

This reaction is illustrated in the adjoining diagram.

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Covalent bonds in solution, hydrogen bonds in solution, ionic bonds in solids, nonpolar covalent bonds in solids- the weakest bond is hydrogen bond.

What is a chemical bond?

A chemical bond is a strong bond that can be formed between atoms, ions, or molecules to create chemical compounds. In covalent bonds, the electrons are shared, whereas in ionic bonds, the electrostatic attraction of two ions with opposing charges forms the link. Strong bonds, also known as primary bonds, include covalent, ionic, and metallic ties. Weak bonds, also known as secondary bonds, include dipole-dipole interactions, the London dispersion force, and hydrogen bonds.

Since there is no necessity for an electron exchange during formation, the hydrogen bond is weak. As a result, it is simpler to break apart a hydrogen connection between two molecules.

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The density of the gold will be 2.82 g/ [tex]cm^3[/tex].

The density of a substance is the ratio of the mass of the substance and its volume.

Mathematically, density = mass/volume

In this case; mass of gold = 1.5 kg or 1500 g, height of gold = 8.1 cm

Being a perfect 8.1 cm tall means the gold is a cube.

Volume of a cube = [tex]l^3[/tex]

Volume of gold = 8.1 x 8.1 x 8.1

                           = 531.441 [tex]cm^3[/tex]

Thus; density of gold = 1500/531.441

                                   = 2.82 g/ [tex]cm^3[/tex]

The density of the gold is, therefore, 2.82 g/ [tex]cm^3[/tex].

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A hydrate of cobalt(II) chloride had a mass of 238.0 g before heating. After heating, the anhydrous CoC1, weighed 130.7 g.

from above statement, we found that,

before heating cobalt(II) chloride  = 238.0g

Mass of hydrated  cobalt(II) chloride After heating = 130.7 g

Mass of water = (1238.0 - 130.7) g = 107.39g

moles H2O  = 107.39× 1 mole H2O÷18g H2O

= 5.96 mol H2O.

moles of anhydrous CoCl, remain = given mass of CoCl÷ molar mass of CoCl

=130÷94.5

= 1.375 mole

moles of CoCl₂ = given mass of  CoCl₂÷ molar mass of CoCl₂

= 130÷ 130

= 1 mole.

hydration number = moles of water÷ mole of compound

= 5.96 mol÷ 1

 = 5.96 hydration number

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High temperature: 58 °F

Low Temperature: 43 °F

50 °F is the average temperature.

Precipitation: 3.12"

79% humidity

44 °F Dew Point

Wind speed: 9 mph

29.96 mmHg pressure "Hg

12-mile visibility

Great Britain is an island in the North Atlantic Ocean off the northwest coast of continental Europe. It is the largest of the British Isles, the largest European island, and the ninth-largest island in the world, with a total area of 209,331 km (80,823 sq mi). It is characterized by a maritime climate with a narrow temperature range.

Northern Bay has about 290 permanent residents and is located on Route 70 between the neighboring communities of Gull Island and Ochre Pit Cove. It stretches from the "south side" of Northern Bay, where the beach is, to what was once known as the "Lower Rooms."

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Answer:

boiling point and melting point.

Answer:

Mercury is a chemical element with the symbol Hg and atomic number 80. It is also known as quicksilver and was formerly named hydrargyrum

Source: Wikipedia

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In the mass spectrum of pentane, the presence of a peak with an m/z = 57 most likely is due to the loss of methyl radical.

The electromagnetic spectrum is the gamut of electromagnetic radiation's frequencies, together with the corresponding wavelengths and photon energies. Electromagnetic waves having frequencies between 1 hertz and 1025 hertz are included in the electromagnetic spectrum. This translates to wavelengths that range from several hundreds of kilometers to only a small portion of an atomic nucleus in size.

Each of the bands that make up this frequency range has a unique name for the electromagnetic spectrum that it contains. The electromagnetic spectrum is made up of radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays, starting at the low frequency (long wavelength) end and ending at the high frequency (short wavelength) end.

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About a century ago, in 1911, Rutherford discovered the atomic nucleus, then in 1919, he witnessed the proton.

For a long time, people believed that Atom was the final particle and the building block of every other component in the universe. However, in the year 1911, Rutherford's atomic model depicting the presence of nucleus shattered the argument that atom is the ultimate unbreakable particle.

Rutherford's experiment also approved that there must be more than just protons in the nucleus. For example, it was previously known that helium had an atomic number of 2, but a mass number of 4.

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The molarity of the solution is 0.528 mol/L.

Given,

Molarity = 0.0480 LiF.

Density = 1.10 g/ml

0.0480 moles of LiF are present in 1 kg of solvent.

Mass of 0.0480 moles of LiF = zero.0480 mol × 26 g/mol = 1.248 g

Mass of the answer (m)=  1 kg (solvent) + 1.248 g(solute)

m = a thousand g + 1.248 g = 1001.248 g

locating the quantity of the solution,

extent = Mass / density

setting the values of mass and density, we get the quantity,

quantity = 910.2254 mL or, 0.9102254 L

The molarity of the solution is the moles of the compound in a single liter of solutions.

Molarity = mass of compound/ molar mass × volume(L)

via placing the values we get,

Molarity = zero.528 mol/L

as a result the molarity of the answer is zero.528 molar.

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Earth is made mostly of metals and rocks.  the elements (carbon, silicon, iron, etc.) that make up these materials form, and they were produced by nuclear fusion in stars.

Metals are materials that, when freshly worked, polished, or crushed, have a lustrous appearance and are relatively good conductors of electricity and heat. Metals are typically ductile and malleable. These properties are the result of metallic bonding between the atoms or molecules of the metal.

Metal is very useful material. Metals have many properties such as B. Strength, toughness, and stiffness. When heated, the metal can be shaped into anything from tiny paper clips to giant airplanes. It is also an excellent conductor of electricity and heat, making it useful for electricity and cooking pots.

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The percent error in the volume measurement was 0.238 %.

d(water) = 0.99738 g/ml; density of the water at 24°C

V(water) = 10.00 m; volume of the water sample

m(water) = d(water) × V(water)

m(water) = 0.99738 g/ml × 10.00 ml

m(water) = 9.9738 g; mass of the water sample

error = (9.9738 g -  9.95 g) ÷ 9.9738 g · 100%

error = 0.238 %

The percent error is an error between an observed value and the true value of a measurement.

In this problem, an observed value is 9.95 grams and the true value of a measurement is 9.9738 grams.

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Lightning is categorized as plasma because it has extremely high levels of energy.

When the electrons are freed from their host atoms for a short time, due to high temperatures, it is plasma. An electrical discharge consisting of moving electrons and ions, is lightning. Lightning strikes create plasma via a very strong jolt of electricity.

By the passage of electricity through a gas, the plasma was created. An electrical discharge through air and it ionizes the atoms when this happens. The electrons from the atoms strips and leaves positively charged ions in the gas, is lightning.

Lightning as an example of plasma present at Earth's surface. Plasma temperatures approaches 30000 K and electron densities may exceed 10²⁴ m−³.

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Answer:

C. The element that is oxidized loses electrons, and the element that is reduced gains electrons.

Explanation:

When an element is oxidized, it loses electrons. But when an element is reduced, it gains electrons. However, an oxidizing agent oxidizes something else, and gets reduced, therefore gaining electrons

The volume of the cylinder will be 7.76 cubic cm. Then the diameter of the cylinder will be 0.88 cm.

Let r be the radius and h be the height of the cylinder. Then the volume of the cylinder will be

V = π r²h cubic units

A cylindrical glass tube 12.7cm in length is filled with Mercury. The mass of Mercury needed to fill the tube is 105.5 grams.

We know that the density of Mercury is 13.59 grams per cubic cm. Then the volume of the Mercury will be

13.59 = 105.5 / V

V = 7.76 cubic cm

Then the radius of the cylinder will be

V = π r²h

7.76 = 3.14 x 12.7 x r²

r = 0.44 cm

Then the diameter of the cylinder will be

d = 2r

d = 2 x 0.44

d = 0.88 cm

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