Look at the image below:
Mid ocean ridge
Sea Level
Celing Tin
Marine Sediment
Oceanhatsak/bero) 57 kr
pug
NOOP
thospheremantle Plazburite)
0 Ops
FR00130 kn
asthenosphere mantie
peridotite)
What type of plate boundary is shown here?
convergent
divergent
transform

If the product of the process is Th-234, the we now know that the original atom must be U-238.

An alpha decay is said to occur when there is the loss of an alpha particle from an atom. Now we know that  when there is a loss of an alpha particle, the mass number is decreased by 4 four units while the atomic number is decreased by two units.

If the product of the process is Th-234, the we now know that the original atom must be U-238. It is found two places after the thorium atom in the periodic table.

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In the reaction catalyzed by the pyruvate dehydrogenase complex, the two carbons constituting the acetyl group are oxidized by NAD+ while attached to the lipoamide.

A multienzyme complex called pyruvate dehydrogenase (PDH) catalyzes the oxidative conversion of pyruvate into acetyl coenzyme A (CoA), carbon dioxide (CO2), and reducing equivalents in the form of NADH.

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The molecular formula of dye:

A major textile dye manufacturer developed a new yellow dye with a molecular formula [tex]C_{15}N_{3}H_{15}[/tex].

Given:

Percentage composition:

C = 75.95%

N = 17.72%

H = 6.33%

Molar mass = 240 g

To find: molecular formula of dye

Calculation:

Let's assume the mass of the compound is 100 gm.

So,  Mass of C = 75.95 gm

Mass of N = 17.72 gm

Mass of H = 6.33 gm

The number of moles = given mass/mass

Therefore, the number of moles of C = 75.95/12 = 6.33

The number of moles of N = 17.72/14 = 1.27

Number of moles of H =6.33/1 = 6.33

Simplest ratio:

C = 6.33/1.27 = 4.98 =5

N = 1.27/1.27 = 1

H = 6.33/1.27 = 4.98 =5

Therefore, the empirical formula is [tex]C_{5}NH_{5}[/tex]

The mass of empirical formula = 12 x 5 + 14 + 1 x 5 = 79 gm

Number of moles= molar mass/ empirical formula

n = 240/79 = 3.04 =3

Therefore, molecular formula = empirical formula x n

Hence, molecular formula = [tex]C_{15}N_{3}H_{15}[/tex]

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The substances composed of atoms that all have the same number of protons are called elements.

What are the names of substances made up of atoms with the same number of protons?

The substances which are made up of atoms with the same numbers of protons are called as element.

An element is a substance with the same number of protons in all of its atoms. Gold is an example of an element. A pure gold bar is made up of only one element, gold.

All matter is composed of substances known as elements, which have distinct chemical and physical properties and cannot be broken down into other substances via ordinary chemical reactions.

Gold, for example, is an element, as is carbon. Only 92 of the 118 elements occur naturally. The remaining elements are unstable because they were only created in laboratories.

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Answer:

1.81 x 10²⁴ atoms He

Explanation:

You can find the amount of atoms by multiplying the given moles by Avogadro's Number. This number represents the amount of atoms per 1 mole. It is important to arrange the ratio in a way that allows for the cancellation of units.

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

3 moles He           6.022 x 10²³ atoms
--------------------  x  --------------------------------  =  1.81 x 10²⁴ atoms He
                                       1 mole

The idea is to foretell the formation of a carbonyl compound by the reaction between alcohol and too much pyridinium chlorochromate. An oxidizing agent called pyridinium chlorochromate converts the alcohol group into the 1carbonyl group.

The carbonyl molecule that results from the reaction will depend on the reactant's OH group. Pyridinium chlorochromate [PCC] converts primary OH to aldehydes, whereas it converts secondary OH to ketones, and oxidation of tertiary OH has little effect. Alcohols and pyridinium chlorochromate [PCC] react to create a carbonyl molecule.

From primary alcohols to aldehydes and from secondary alcohols to ketones, pyridinium chlorochromate oxidizes alcohols one step up the oxidation ladder. pyridinium chlorochromate will not oxidize aldehydes to carboxylic acids, in contrast to chromic acid. Comparable to Pyridine (the Collins reagent) and CrO3 will both oxidize primary alcohols to aldehydes. Here are two instances of pyridinium chlorochromate being used.

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Answer:

in order of increasing atomic number, or the number of protons in an atom's nucleus, which generally coincides with increasing atomic mass

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It is correct to state that Amines are suitable for preparing buffers are often synthesized by treating ammonia with epoxides. The relative structures of compound B are attached accordingly.

Amine is a family of basic chemical compounds formed by replacing hydrogen with one or more monovalent hydrocarbon radicals.

Apart from medications and pharmaceuticals, amines are employed in the production of azo-dyes and nylon.

They are commonly employed in the development of crop protection, pharmaceutical, and water purification chemicals. They are also used in personal care products.

Ethanol amines are the most widely utilized form of amine on the global market.

It should be noted that ammonia attacks epoxides at the least substituted carbon to produce (A.)

The generated product is then made to react with another epoxide, resulting in the synthesis of successive products.

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From the balanced redox equation of the reaction, the coefficient of OH⁻ is 8.

A redox equation is the equation of a redox reaction in which oxidation and reduction occurs simultaneously.

The given redox reaction takes place in a basic solution

The balanced redox equation of the reaction is given below:

4 H₂O(l) + 3 S²⁻(aq) + 2 NO₃⁻(aq) ---> 3 S(s) + 2 NO + 8 OH⁻(aq)

In conclusion, a redox equation is balanced when oxidation and reduction occur to the same extent.

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In an ionic lattice, atoms are packed together in a regular cubic arrangement; option A.

An ionic compound is a compound which is composed of oppositely-charged ions which are held together by strong electrostatic forces of attraction.

The properties of ionic compound include:

Ionic lattices have regular structural patterns consisting of atoms arranged in a regular repeating pattern, usually a cube. There are several cubic structures in ionic lattices.

In conclusion, ionic lattices are regular repeating arrangement of atoms. Ionic lattices are usually arranged in the form of cubic crystal.

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The solubility of lead(II) chloride is 0.45 g/100 mL of solution. The value of  [tex]K_{sp}[/tex] of [tex]PbCl_{2}[/tex]  is 1.7×[tex]10^{-5}[/tex] .

So, option C is correct one.

Calculation,

Number of moles of [tex]PbCl_{2}[/tex]  = mass/molar mass = 0.45/278.1 = 1.618×[tex]10^{-3}[/tex] moles

Concentration of [tex]Pb^{+2}[/tex] and [tex]Cl^{-}[/tex] ion

Molarity  of [tex]Pb^{+2}[/tex] = Number of moles of solute /volume in lit

Molarity  of [tex]Pb^{+2}[/tex] = 1.618×[tex]10^{-3}[/tex] moles /0.1 lit = 0.0162 M

[tex]PbCl_{2}[/tex] →  [tex]Pb^{+2}[/tex] +  2[tex]Cl^{-}[/tex]

For certain amount of  [tex]Pb^{+2}[/tex] , twice this amount of  [tex]Cl^{-}[/tex] ion formed.

The concentration of   [tex]Cl^{-}[/tex] ion formed = 2× 0.0162 M = 0.0324 M

Now,

The solubility of lead(II) chloride of solution = 0.45 g/100 mL

[tex]K_{sp}[/tex] of [tex]PbCl_{2}[/tex] = [ [tex]Pb^{+2}[/tex] ][tex][Cl^{-}]^{2}[/tex] = 0.0162 ×[tex][0.0324 ]^{2}[/tex] =  1.7×[tex]10^{-5}[/tex] .

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chemical properties and same number of shell

Explanation:

elements in the same group have the same number of eletrons in their outermost shell and hence have the same chemical properties

Answer:

C.) H₂O and K₂SO₄

Explanation:

This appears to be a double-displacement reaction. In these reactions, the cation of one substance is swapped with the cation of another.

So, K⁺ from KOH is swapped with the H⁺ from H₂SO₄. The new compounds should have an overall charge of 0. Therefore, it may be necessary to modify the amount of each ion (not just be 1:1).

K₂SO₄
-----> K⁺ and SO₄²⁻

-----> + 1 + 1 + (-2) = 0

H₂O

-----> H⁺ and OH⁻

-----> + 1 + (-1) = 0

Galaxies is not the part of the Solar system.

Hence, Option B is correct answer.

Solar System is made up of all the planets that revolve around our Sun. Solar System contains eight planets. These planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Now lets check all options one by one

Option (A): Jovian Planets

Outer planets are called Jovian planets. These planets are Jupiter, Saturn, Uranus and Neptune. So Jovian Planets are part of the Solar System.

Hence, Option A is incorrect.

Option (B): Galaxies

Galaxy has a black hole at its center. It is a huge collection of dust, billions of star and gas. So galaxies are not a part of the Solar system.

Hence, Option B is incorrect.

Option (C): Terrestrial Planets

Innermost planets in solar system are Terrestrial planets. These planets are Mercury, Venus, Earth and Mars. So Terrestrial planets are part of the Solar system.

Hence, Option C is incorrect.

Option (D): Sun

The Sun is the part of the Solar system as it is the only star in our Solar system. Sun is the center of our Solar system.

Hence, Option D is incorrect.

Thus from the above conclusion we can say that Galaxies is not the part of the Solar system.

Hence, Option B is correct answer.

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Engine cooling fluid is a mixture of antifreeze and water.

Hence option (d) is correct.

A liquid mixture of water and antifreeze called engine coolant is kept in your car's radiator.

Any compound that lowers water's freezing point is considered antifreeze and protects a system against the negative effects of ice formation.

Radiators are protected from deterioration by antifreezes, which are frequently added to water in car cooling systems.

It keeps your engine from freezing in extremely cold weather or overheating in hot weather, both of which can cause serious problems for an engine.

Although it's standard practice to combine water and antifreeze 50/50 in a car's cooling system, this guideline is not inflexible.

Mixtures can be changed to either raise the boiling point or lower the freezing point limit due to the wide range of weather conditions that cars can operate in.

Hence, Engine cooling fluid is a mixture of antifreeze and water.

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Dry powder extinguishers

They are for Class D or combustible metal fires, only. They are ineffective on all other classes of fires.

Extinguishing Agent means a source of extinguishment in which to quickly and effectively suppress the fire.

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Dalton's law

States that the total pressure exerted by a mixture of gases is the sum of the pressures exerted independently by each gas in the mixture.

Dalton's law, which states that a gas mixture's overall pressure is equal to the sum of its component gases' partial pressures. The pressure that each gas would produce if it occupied the same volume of the mixture by itself at the same temperature is known as the partial pressure.

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The order of internal organization from lowest to highest degree is; cell <  tissue < organ < organ system

The complexity of the parts that compose an organism lays the bedrock for the classification of life. Some organisms are composed only of one cell while others are composed of many complex systems.

The order of internal organization from lowest to highest degree is; cell <  tissue < organ < organ system

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Missing parts:

Place the items in order from lowest to highest degree of internal organization.

1.organ system

2.tissue

3.cell

4.organ

Once hydrogen bonds form between every fourth amino acid in a polypeptide chain, the chain begins to twist into the secondary structure known as a(n) alpha helix.

Amino acids are organic compound. Amino acids contains amine and carboxyl functional group. Amino acids is the building block of life these are the molecules that combine to form proteins.

A unique sequence of amino acids joined by peptide bonds is called polypeptide.

Thus from the above conclusion we can say that Once hydrogen bonds form between every fourth amino acid in a polypeptide chain, the chain begins to twist into the secondary structure known as a(n) alpha helix.

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When reactants are mixed and heated and liquid collects in the sidearm of the apparatus, a chemical reaction is occurring.

A chemical reaction is said to occur when reactants are combined to form products. We must note that the formation of products is evidenced by;

Hence,  when reactants are mixed and heated and liquid collects in the sidearm of the apparatus, a chemical reaction is occurring.

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re write the question.

Explanation:

it seems incomplete.

The oxidation number is often referred to as the oxidation state.

The number of electron/electrons which completely transferred and induced charged on an atom is called oxidation state of an atom. It is also describe as the number that is allocated to elements in a chemical combination. The number of electron that atoms in a molecule can share while forming chemical bonds with other atoms of a different elements. The oxidation number of the monoatomic (composed by atom) ion is the same as the charge of the ion.

The primary distinction between oxidation number versus oxidation state would be that the former refers to the charge that would be placed on the central atom of a coordination complex if every one of the connections around it were ionic bonds, while the latter relates to the number of electrons that an atom could either receive, lose, or share with some other atom.

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The 0.25 volume in liters of 1.0 M [tex]K_{2}CO_{3}[/tex] solution is required to provide 0.5 moles of [tex]K[/tex](aq).

Calculation,

The Potassium carbonate dissolves as follows:

[tex]K_{2}CO_{3}(s)[/tex] → [tex]2K(aq) +[/tex][tex]CO_{3}^{-2} (aq)[/tex]

The mole ratio is 1: 2

It means, the 1 mole [tex]K_{2}CO_{3}[/tex] required to form 2 mole of [tex]K[/tex](aq).

To provide 0.5 mole of [tex]K[/tex](aq) = 1 mole ×0.5 mole /2 mole required by [tex]K_{2}CO_{3}[/tex].

To provide 0.5 mole of [tex]K[/tex](aq) ,0.25 mole required by [tex]K_{2}CO_{3}[/tex].

The morality of  [tex]K_{2}CO_{3}[/tex] = 1 M = number of moles / volume in lit

The morality of  [tex]K_{2}CO_{3}[/tex] =   1 M = 0.25 mole/ volume in lit

Volume in lit = 0.25 mole / 1 M = 0.25 mole/mole/lit = 0.25 lit

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Nylon, a polyamide, is produced from hexanedi-amine and a substance, x. This substance, x, is most probably a carboxylic acid.

A polymer containing repeating units connected by amide bonds being called a polyamide. Both naturally occurring and synthetic polyamides are found. Proteins found in materials like wool and silk were examples of naturally produced polyamides.

The term "nylon" refers to a family of polymeric materials made up of polyamides. Nylon would be a silk-like thermoplastic that may be formed into threads, films, or other shapes. It is often manufactured from petroleum.

Therefore, Nylon, a polyamide, is produced from hexanedi-amine and a substance, x. This substance, x, is most probably a carboxylic acid.

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The half-life of cesium-137 is 30 years. Suppose we have a 150 mg sample. The masses (in mg) that remains after t years A=150/2^t/30yrs

A substance's half-life is the amount of time it takes for half of it to decompose.

Half-life is the length of time it takes for half of an unstable nucleus to go through its decay process. A radioactive element's half-life decay time varies depending on the element. For instance, carbon-10 has a half-life of only 19 seconds, making it impossible to discover in nature. On the other hand, uranium-233 has a half-life of almost 160000 years.

When n half-lives have passed, the formula for estimating the amount still left is:-

A=A°/2^n

where,

A=initial amount

A°=remaining amount

n=t/t_{1/2}

A=150/2^t/30yrs

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Answer:

terminal

Explanation:

When a hydrogen atom is part of a molecular structure, it is always a terminal atom.

Answer:

1.15 moles H₂

Explanation:

To find the moles of H₂ gas, you need to use the Ideal Gas Law equation. The equation looks like this:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas Constant (0.08206 L*atm/mol*K)

-----> T = temperature (K)

Before you can plug the given values into the equation and simplify, you need to convert Celsius to Kelvin.

P = 0.923 atm                     R = 0.08206 L*atm/mol*K

V = 29.6 L                           T = 17.0 °C + 273.15 = 290.15 K

n = ? moles

PV = nRT

(0.923 atm)(29.6 L) = n(0.08206 L*atm/mol*K)(290.15 K)

27.3208 = n(23.809709)

1.15 = n

Answer:

cool the tractor water system

As a reaction proceeds toward equilibrium from reactants to products, the value of Q is Increasing

Equilibrium can exist in chemical processes (the products and reactants are produced at the same rate). In a reversible chemical reaction, chemical equilibrium is the state in which there is no net change in the quantity of reactants or products. When a chemical reaction is reversible, the products react with the original reactants as soon as they are created.

There is no net change in the quantity of the chemicals involved when the two opposing reactions are in equilibrium because they are occurring at identical rates, or velocities. At this point, the reaction may be deemed to be finished, meaning that the maximum amount of reactants to products has been converted under the given reaction conditions.

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