UPLC has better performance than the HPLC. What is the mechanism?

Among the options provided, the statement that accurately describes a type of potential energy found in a container full of a chemical substance in liquid form is: "The bonds between atoms are one place where potential energy is stored."

In a container filled with a chemical substance in liquid form, the potential energy is primarily stored in the bonds between atoms within the molecules of the substance. These bonds are formed by the sharing or transferring of electrons between atoms, creating a stable arrangement. The potential energy arises from the electrostatic interactions between the charged particles involved in these chemical bonds.When the liquid substance is in its equilibrium state, the potential energy stored in the bonds represents the energy required to break these bonds and separate the atoms, transforming the substance into a different state (such as a gas or a solid).

This potential energy is released when the substance undergoes a chemical reaction or when external forces act upon it.While other forms of potential energy can also exist in a liquid substance, such as kinetic energy due to the speed of the particles or vibrational energy of the atoms within the molecules, these are generally associated with other types of energy rather than potential energy.

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Density is calculated by dividing the mass of an object by its volume. In this case, we are given the mass and volume of the metal.

Mass = 46.6 g

Volume = 5.2 cm^3

Density = Mass / Volume

Density = 46.6 g / 5.2 cm^3

Density ≈ 8.96 g/cm^3

To express the density to the proper number of significant figures, we consider the least precise measurement, which is the volume given to two significant figures (5.2 cm^3). Therefore, the density should be expressed as two significant figures.

Density ≈ 8.9 g/cm^3

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The compound that contains a sulfur atom that bears a 1 formal charge is H₂S.

The formal charge of an atom in a molecule or ion is the electrical charge that the atom would have if the bonding electrons were shared equally among all atoms in the molecule or ion.The formula for formal charge is:

Formal charge = valence electrons - non-bonding electrons - 1/2 (bonding electrons)

For H₂S, valence electrons of Sulfur is 6.

The bonding electrons are 2 pairs which are 4 electrons. (H₂S has a single covalent bond).The non-bonding electrons on sulfur are two, 2.The formula for formal charge for sulfur in H₂S: Formal charge = 6 - 2 - 1/2(4) = 6 - 2 - 2 = 2 - 2 = 0.Since sulfur in H₂S has a formal charge of 0, none of the atoms listed contain a sulfur atom that bears a 1 formal charge.

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Answer:

159g

Explanation:

Copper (I) sulfide is formed by the chemical reaction between copper and sulfur. Copper is a limiting reagent that results in the formation of 190.26 grams of copper(I) sulfide.

A limiting reagent is defined as the reactant that gets completely utilized in the reaction and affects the amount of the product formation. On the contrary, the excess reagent is present in more amounts.

Given,

Mass of copper = 127 gm

Mass of sulfur = 41 gm

Moles of copper:

n = mass ÷ molar mass

n = 127 ÷ 63.546

n = 1.99

Moles of sulfur:

n = 41 ÷ 32.065

n = 1.27

The reaction is shown as:

Cu + S → CuS

Here, 9 g of sulfur remains unreacted and hence is an excess reagent, and copper being consumed is a limiting reagent.

Here, 1 mole of copper reacts to form 1 mole of copper sulfide hence, 1.99 moles of Cu produces, 1.99 moles of copper sulfide.

Mass of CuS is calculated as:

Mass = moles × molar mass

Mass = 1.99 mol × 95.611 g/mol

= 190.26 grams

Therefore, 127 gm of copper and 41 gm of sulfur produces 190.26 grams of copper sulfide.

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387.27 K temperature will the reaction proceed 6.00 times faster than it did at 337 K.

k2 is 6 times k1 and hence k2/k1 = 6

we have ln(k2/k1) = Ea/R (1/T1- 1/T2)

ln(6) = 38670/8.314 x( 1/337 -1/T2)

0.00038522 = (1/337 -1/T2)

1/T2 = 0.0033525

T2 = 387.27 K

In chemistry and physics, activation electricity is the minimal amount of electricity that has to be supplied for compounds to result in a chemical reaction. The activation energy of a reaction is measured in joules per mole, kilojoules in keeping with mole, or kilocalories consistent with mole.

Activation strength is described as the minimum quantity of strength required via a reacting molecule to get transformed into a product. it may additionally be defined because the minimal amount of energy had to prompt or energize molecules or atoms in an effort to go through a chemical reaction or transformation. In transition-state theory, activation electricity is the distinction in electricity content material between atoms or molecules in an activated or transition-country configuration and the corresponding atoms and molecules in their initial configuration.

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Complete Question:

A certain reaction has an activation energy of 38.67 kJ/mol. At what Kelvin temperature will the reaction proceed 6.00 times faster than it did at 337 K?

The chemist can use the 6.0 M HCl solution to make the 3.4 M solution by diluting 566.7 mL of the 6.0 M solution to a final volume of 1 L.

To make a 3.4 M solution of HCl, the chemist needs to dilute a concentrated HCl solution to a specific volume. Let's use the formula;

C₁V₁ = C₂V₂

Where C₁ is the concentration of the concentrated HCl solution, V₁ is the volume of the concentrated HCl solution needed, C₂ is the desired concentration of the final solution (3.4 M), and V₂ is the final volume of the solution.

We can rearrange this formula to solve for V₁

V₁ = (C₂V₂) / C₁

Substituting the values, we get;

V₁ = (3.4 M x 1 L) / 6.0 M = 0.5667 L = 566.7 mL

Or

V₁ = (3.4 M x 1 L) / 2.0 M

= 1.7 L

The chemist cannot use the 2.0 M HCl solution to make the desired 3.4 M solution, as it is too dilute to achieve the desired concentration.

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The quantity of heat absorbed may be calculated by dividing the number of moles of ice by the molar heat of fusion. 3. After heating the water to 0oC, the temperature is increased to 100oC using the equation

H=cpmT

+40.7kJ/7.0  =5.81

and the water specific heat.

Heat is an example of energy. When a substance absorbs heat, the inter-particle linkages between the particles weaken and break, resulting in a change in the state of the substance. Heat does not cause a significant phase shift to raise the temperature.

Because of its low cost, large heat capacity, and excellent transport qualities, water is the most often utilised heat transfer fluid. However, depending on the system pressure, the range of practical temperatures is confined by boiling at high temperatures or freezing below 0 °C.

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Answer: 284.9

Explanation:

acellus verified

Answer:

The correct answer is Molten

Explanation: The proof is in the attachment below, the answer is correct on the quiz I took

The term molten describes the materials magma is made up. Thus, option B is correct.

Silver is a shiny metal that conducts electricity very well . It can be molded into thin sheets it means it can spread into a like a sheet and these type of properties is known as malleability.

Potassium is dull and brittle it means that it can't be change into sheet when you try to change in sheet it will break and these properties are called as brittlness and when it is has been dissolved into water, which it does quite easily. Physical properties of matter include color, hardness, malleability, solubility, electrical conductivity, density, melting points and boiling points.

Carbon is an element which is a chemical by nature and it is represented by C and the atomic number of carbon is 6. The atomic mass of carbon is 12.011 u and the carbon contain 2, 4 electrons per shell with the electronegativity of 2.55 .

Therefore,the term molten describes the materials magma is made up. Thus, option B is correct.

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Answer:

Sulphur oxide

Explanation:

All of the above oxides with the exception of sulphur oxide are basic oxides and so will not turn blue litmus paper red when dissolved in water. Sulphur oxide, SO2 on the other hand, is an acid anhydride (a non-metallic oxide which dissolves in water to produce acid) rendering it the ability of turning blue litmus paper red when dissolved in water.

Answer:sulpher oxide

Explanation:

All of the compounds except sulpher dioxide are metallic oxide which means basic oxide and base change red litmus paper to blue while acid change blue to red so the answer is the acidic oxide or sulpher dioxide

Answer:

(D) is the correct option.

Explanation:

Molar mass of NO = (14+16) g/mol = 30 g/mol

Molar mass of NO₂ = (14+16×2) g/mol = 46 g/mol

Molar mass of N₂O = (14×2+16) g/mol = 44 g/mol

Molar mass of N₂O₅ = (14×2+16×5) g/mol = 108 g/mol

Number of moles = mass/molar mass

mass = n × M, M = molar mass

n = 1 mol in each case

Higher the molar mass, greater is the mass of the compound. The molar mass of N₂O₅ is greatest of all other cases. It will have greatest mass.

Moles of AlCl_3

\(\\ \tt\hookrightarrow \dfrac{352}{133}=2.64mol\)

Now

\(\\ \tt\hookrightarrow 4.2=\dfrac{2.64}{V}\)

\(\\ \tt\hookrightarrow V=0.62L\)

For each chemical reaction listed in the table below, decide whether the highlighted atom is being oxidized or reduced. H₂S 2NAOH is the highlighted atom being reduced in the given chemical reaction is sulfur (S), while the highlighted atom being oxidized is hydrogen (H).

H₂S + 2NaOH → 2H₂O + Na₂S, is the chemical equation provided in the table above. The reaction between hydrogen sulfide and sodium hydroxide is a redox reaction. A redox reaction is a reaction that involves a transfer of electrons between two species. The oxidation state of sulfur (S) changes from -2 to 0; thus, the sulfur (S) atom is reduced in this reaction. Sodium's (Na) oxidation state changes from +1 to 0, indicating that it has been reduced.

The hydrogen's (H) oxidation state has not changed; it remains +1, indicating that it is neither oxidized nor reduced. The hydrogen sulfide's (H₂S) oxidation state changes from -2 to 0, indicating that it has been oxidized. The sodium hydroxide's (NaOH) oxidation state changes from +1 to -1, indicating that it has been oxidized as well. Hence, the highlighted atom being reduced in the given chemical reaction is sulfur (S), while the highlighted atom being oxidized is hydrogen (H).

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Option 3 accurately represents the essence of an ethogram as an inventory of species-specific behaviors.

An ethogram can be best described as an inventory of the behavior of a particular species. It is a systematic catalog or list of behaviors exhibited by a specific animal species.

An ethogram provides a comprehensive overview of the behaviors displayed by the animals under study, documenting various activities, actions, and patterns of behavior.

While options 1 and 2 are related to visual representations or descriptions of behavior, they do not capture the comprehensive nature of an ethogram. Option 4 refers specifically to behaviors observed in response to an experimental intervention, which is more narrow in scope compared to an ethogram. Therefore, option 3 accurately represents the essence of an ethogram as an inventory of species-specific behaviors.

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A dirty pipette that consistently causes volume measurements to be off by 0.01 ml would be an example of a systematic error, which can be minimized or eliminated by ensuring proper calibration and maintenance of equipment, as well as accurate and consistent measurement techniques.

A dirty pipette that consistently causes your volume measurements to be off by 0.01 ml would be an example of a systematic error. Systematic error is a type of error in which the measured values are consistently offset from the true values by a fixed amount in the same direction.

It is caused by a flaw in the experimental design or equipment, such as an improperly calibrated instrument, malfunctioning equipment, or poor measurement techniques.Systematic errors can be minimized by ensuring that equipment is properly calibrated and maintained, and that measurement techniques are accurate and consistent. It is important to identify and correct systematic errors in order to obtain accurate and reliable data.

In the case of a dirty pipette, the error can be eliminated by thoroughly cleaning the pipette and ensuring that it is properly calibrated before use. If the pipette is damaged or malfunctioning, it may need to be repaired or replaced to eliminate the systematic error.

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Answer:

genatics play a huge part. Your mom may be on the tall side or may have cheated on your father. Plus she may of gotten married before you and her father where married or you may of allready been born before she meant your father meaning you have a differnt biological dad then you think.

Explanation:

Hope This Helps

Have A Great Day

~Zero~

The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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It is very important not to mix aqueous and organic waste in the lab because bleach (D) is a strong oxidizer.

Mixing aqueous and organic waste can result in hazardous chemical reactions, leading to potential safety risks such as fires, explosions, or the release of toxic gases. Bleach, specifically, contains sodium hypochlorite, a powerful oxidizing agent that can react violently with many organic compounds. Hence, the correct answer is (Option D) Bleach.

Organic and aqueous waste should always be separated to avoid unintended reactions and maintain a safe laboratory environment. Proper waste disposal is crucial in reducing risks associated with hazardous chemicals and minimizing environmental impacts. Remember to always follow your lab's guidelines on waste disposal, and if you are unsure, consult with your lab instructor or safety officer to ensure appropriate handling of waste materials.

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Answer:

I have for Decompostion

Explanation:

A decomposition reaction occurs when one reactant breaks down into two or more products. It can be represented by the general equation: AB → A + B. In this equation, AB represents the reactant that begins the reaction, and A and B represent the products of the reaction

Answer: The frequency is 7.047 Hz. It comes under ultraviolet radiation

Explanation:

We know that v = λ x f ................. (1)

where v ⇒ velocity of the wave

f ⇒ frequency of the wave

λ ⇒ wavelength of the wave

Since we know that the given wave is electromagnetic radiation,

v = 3 x 10⁸ m/s

λ = 4.257 x 10^-9 m (Given)

Substituting in (1), we get

f = v / λ

f = 3 x 10^8 / 4.257 x 10^-9

f = 7.047 x 10^16 Hz

Since the frequency is in the order of 16, the given radiation is ultraviolet radiation

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Answer: distance by time

20/2=10

Explanation:

The reaction between CdSO₄ and K₂S is a precipitation reaction where cadmium sulfide precipitates as a solid, while potassium sulfate remains in the aqueous form.

a) The "(s)" in the chemical equation CdS(s) represents that cadmium sulfide is a solid precipitate. It indicates that the product formed in the reaction is solid.

b) The chemical equation for the dissolution of cadmium sulfate (CdSO₄) in water is:

CdSO₄(s) → Cd²⁺(aq) + SO₄²⁻(aq)

The chemical equation for the dissolution of potassium sulfide (K₂S) in water is:

K₂S(s) → 2K⁺(aq) + S²⁻(aq)

c) The difference between potassium sulfate being aqueous (K₂SO₄(aq)) and cadmium sulfide being a solid (CdS(s)) lies in their solubility in water. Potassium sulfate is soluble in water, meaning it dissolves and dissociates into its respective ions (K⁺ and SO₄²⁻) in the solution. On the other hand, cadmium sulfide is insoluble in water and forms a solid precipitate, indicating that it does not dissolve but instead forms solid particles.

In the lab, the difference can be observed by visual inspection. When the reaction between CdSO₄ and K₂S takes place, a yellow precipitate of cadmium sulfide will form, indicating the presence of the solid. The potassium sulfate, being in an aqueous form, will remain dissolved and not form any visible solid.

d) The name for this type of reaction is a precipitation reaction or double displacement reaction. In this reaction, the ions from two compounds exchange to form an insoluble solid (precipitate) and a soluble compound.

In the given reaction between CdSO₄ and K₂S, cadmium sulfide (CdS) is the insoluble solid (precipitate), and potassium sulfate (K₂SO₄) is the soluble compound formed in solution.

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Answer:

1) A

2) P

3) B

4) M

5) I

6) C

7) H

8) J

9) F

10) L

11) N

12) G

13) O

14) K

15) D

Here ya go friend, these should be correct, for the most part.

The reason why A returned to its original color but B did not is because; A  chemical change occurred in substance A, and a physical change occurred in substance B.

A chemical change results in a change in the "composition" of a substance. When the composition of the substance changes, the change is often irreversible.

A physical change does not alter the composition of a substance hence a physical change is easily reversible.

Since A did not return to its former color, it underwent a chemical change while B underwent a physical change since it returned to its former color.

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Answer:

Meteoroids are tiny asteroids or the broken-off crumbs of comets and sometimes planets. They range in size from a grain of sand to boulders 3 feet (1 meter) wide. When meteoroids collide with a planet's atmosphere, they become meteors

pls give me brainliest lol :)

Expanation:

Given the followin reactions we have to idenftify the oxidizing and reducing aget.

3 CH₃CHOHCH₃ + Cr₂O₇²⁻ + 8 H⁺ —> 3 (CH₃)₂CO + 2 Cr³⁺ + 7 H₂O

We can split this redox reaction in two half reactions.

3 CH₃CHOHCH₃ ----> 3 (CH₃)₂CO

Cr₂O₇²⁻ ----> 2 Cr³⁺

Let's balance the first half reaction, since it is an acidic meium, we can aDdd H+, molecules of waer and e-.

+ H8 H +⁺ + 8 e⁻

We have 24 atoms of H on the left and and 18 atoms of H of the right side. We have to add 8 H+ on the right side. We have 3 atoms of O on both sides. So we only have to add the electrons to balance the carges. )Also 8 on the right side.

Cr₂O₇²⁻ + 14 H⁺ + 6 e⁻----> 2 Cr³⁺ + 7 H₂O

In the second half reaction we have to add 7 molecules of water on the right side to balance the O atoms. We added 14 atoms of H on the right side, so we have to add 14 H+ on the left side. The total charge of the left side is +12 and the total charge of the right ide is is +6. We have to add 6 el- on the left side.

The two balanced half reactions are:

3 CH₃CHOHCH₃ ----> 3 (CH₃)₂CO + 8 H⁺ + 8 e⁻ Oxidation Half-reaction

Cr₂O₇²⁻ + 14 H⁺ + 6 e⁻----> 2 Cr³⁺ + 7 H₂O Reduction Half-reaction

If we pay attention to the equations we will see that Cr₂O₇²⁻ is gaining electrons, i is being reduced. So Cr₂O₇²⁻ is our oxidizing agent.

CH₃CHOHCH₃ is losing electrons, it is being oxidized. CH₃CHOHCH₃ is our reducing agent.

Answer:

Cr₂O₇²⁻: oxidizing agent.

CH₃CHOHCH₃: reducing agent.

Answer:

hope it helps you

Explanation:

Once one shell is full, the next electron that is added has to move to the next shell. So... for the element of NEON, you already know that the atomic number tells you the number of electrons. That means there are 10 electrons in a neon atom.

Answer:

When 1.20 mole of ammonia reacts, 1.8 moles of water are produced.

Explanation:

The balanced reaction is:

4 NH₃(g) + 5 O₂(g) → 4 NO (g) + 6 H₂O

By stoichiometry of the reaction, the following amounts of moles participate in the reaction:

Then you can apply the following rule of three: if by stoichiometry 4 moles of ammonia produce 6 moles of water, 1.2 moles of ammonia will produce how many moles of water?

\(moles of water=\frac{1.2 moles of ammonia*6 moles of water}{4 moles of ammonia}\)

moles of water= 1.8 moles

When 1.20 mole of ammonia reacts, 1.8 moles of water are produced.

Answer:

Definetly Nitrogen

Explanation:

Nitrogen is the most electronegative

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 2500 × 5

We have the final answer as

Hope this helps you