(a) Describe the molecule xenon trioxide, XeO3, using four possible Lewis structures, one each with zero, one, two, or three Xe—O double bonds. (b) Do any of these resonance structures satisfy the octet rule for every atom in the molecule? (c) Do any of the four Lewis structures have multiple resonance structures? If so, how many resonance structures do you find? (d) Which of the Lewis structures in (a) yields the most favorable formal charges for the molecule?

Confrontation, compromise, and withdrawal are all forms of conflict management. In conflict management, confrontation means facing up to or standing up to someone, while withdrawal means retreating from a relationship or situation when there is no possibility of conflict resolution.

Similarly, compromise is a way of resolving a conflict or disagreement by giving up something or meeting someone halfway. When a conflict arises, people use different strategies to manage it. Conflict management strategies can be classified into two broad categories; constructive conflict management and destructive conflict management. Constructive conflict management strategies are strategies used to resolve conflicts peacefully without any harm to either party. Such strategies include confrontation, compromise, problem-solving, negotiation, and collaboration. Conversely, destructive conflict management strategies are those that are aimed at causing harm, such as physical violence, emotional abuse, or verbal attacks.

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Answer:

hello :3

A cold is a contagious upper respiratory infection that affects your nose, throat, sinuses and trachea (windpipe).

Explanation:

have a nice day :3

Answer:

The metal molecules inside start to vibrate faster, causing the solid to change to liquid if exposed to the intense temperature over a long period of time.

Explanation:

As my answer states, but for an explanation, lets say you are boiling an ice cube, it will start to turn into liquid water, that is because it has been exposed to that heat for a long period of time. The same will happen for the metal, if its exposed for long enough, it will turn into a liquid, then can be turned into a gas because the molecules are vibrating so quickly that they start to easily move apart.

Hope this helps, let me know if any more clarification is needed.

Answer:

Mixtures are physically combined structures that can be separated into their original components. A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.

Answer:

It would depend on the mixture to determine what the mixture is.

Explanation:

If you don't know what the mixture is then you wont be able to find what substances, since their could be many components.

A force is only balanced when the net force is zero. Note that unbalanced forces causes a body to accelerate.

According to Newton's law, an object will only move when it is acted upon by an unbalanced force. Hence, if the forces acting on an object are balanced, it will not move. A flower pot sitting on a table has a zero net force acting on it.

When a leaf is falling to the ground, it is acted upon by an unbalanced force. Note that unbalanced forces causes a body to accelerate. If a body in motion is acted upon by balanced forces, the objects motion does not change.

The action of unbalanced forces leads to acceleration  of a body or change in direction. Hence, when unbalanced forces act on an object that is in motion, the object can change speed, direction, or both. A force is only balanced when the net force is zero.

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The balanced chemical reaction of potassium chloride involves 2 moles of potassium to react with 1 mole of chlorine and other are explained below.

Balanced chemical equations are those equations in which all entities are present in same amount on reactant as well as on the product side of the reaction.

Given chemical reactions are:

        2K + Cl₂ → 2KCl

        CF₄ + 2Br₂ → CBr₄ + 2F₂

        GaF₃ + 3Cs → 3CsF + Ga

        MgF₂ + Li₂CO₃ → MgCO₃ + 2LiF

Hence in the formation of potassium chloride balanced equation involves 2 moles of potassium to react with 1 mole of chlorine.

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Answer:

4.9 L O₂

General Formulas and Concepts:

Atomic Structure

Stoichiometry

Explanation:

Step 1: Define

Identify variables

[Given] 6.4 g O₂ at STP

[Solve] L O₂

Step 2: Identify Conversions

[STP] 1 mol = 22.4 L

[PT] Molar Mass of O: 16.00 g/mol

Molar Mass of O₂: 2(16.00) = 32.00 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

4.48 L O₂ ≈ 4.9 L O₂

Answer:

#Ar atoms = 1.47 x 10²²

Explanation:

PV = nRT => n = PV/RT

P = 8.80 X 10⁵ mmHg =  8.80 X 10⁵ mmHg/760mmHg·atm⁻¹ = 11.58atm

V = 137ml = 0.137 Liter

n = ? moles Ar = ? moles Ar x 6.02 x 10²³ Atoms Ar/mole Ar

R = 0.08206 L·atm/mol·K

T = 794K

PV = nRT => n = PV/RT = 11.58atm·0.137L / 0.08206L·atm/mol·K·794K

=> n = 0.0243mole Ar = 0.0244mole Ar x 6.02 x 10²³ atoms Ar/mole Ar

= 1.47 x 10²² atoms Ar

i) you would need 60 mL of the 50X TAE Buffer stock. ii)You would need 2940 mL of distilled water (dH2O) to make up the 1X TAE Buffer to a total volume of 3 liters.

To dilute the 50X TAE Buffer to a 1X working solution for a total volume of 3 liters, you would use the following calculations:

(i) 1X TAE Buffer - stock:

For a 1X TAE Buffer, the dilution factor is 50X. Since you want to prepare a total volume of 3 liters, the volume of the stock solution needed can be calculated as follows:

Volume of 50X TAE Buffer stock = (Final volume / Dilution factor)

                              = (3 L / 50)

                              = 0.06 L or 60 mL

Therefore, you would need 60 mL of the 50X TAE Buffer stock.

(ii) 1X TAE Buffer - dH2O: To make up the remaining volume with distilled water (dH2O), subtract the volume of the stock solution from the final volume:

Volume of dH2O = (Final volume - Volume of 50X TAE Buffer stock)

             = (3 L - 0.06 L)

             = 2.94 L or 2940 mL

Therefore, you would need 2940 mL of distilled water (dH2O) to make up the 1X TAE Buffer to a total volume of 3 liters.

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Answer:

Make Recycle Bins Easily Accessible

Ditch Single-Use Waste

Minimise Paper Waste

Designate a Drawer for Scrap Paper

Eco-Friendly Lunches

Answer:

The number of nitrogen molecules inside of berylluim nitrite are 5 cells.

Explanation:

The compound octane is a hydrocarbon with the molar mass of 114.26 g/mol. It contains 8 carbon atoms and 18 hydrogens. Hence, the molecular formula is C₈H₁₈.

Hydrocarbons are organic compounds containing carbon -hydrogen bonds. Alkanes are saturated hydrocarbons with the general formula of CₙH₂ₙ₊₂.

Given the molar mass of octane  = 114.26 g/mol

mass of hydrogen = 18.17 g.

atomic mass of H = 1.009 g/mol

then, number of moles of H  = 18.17 /1.009 = 18 moles.

Thus, there are 18 hydrogens.

Now, the mass of carbons = 114.26 -18.17 = 96.6 g

atomic mass of carbon = 12 g/mol

no.of moles of carbon = 96.6/12 = 8 moles

Thus, there are 8 carbons.

Therefore, the molecular formula of octane is C₈H₁₈.

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There will be 1.084×10²¹ formula units are left un-reacted.

A formula unit is the part of an ionic compound's chemical formula that lists the ions in the smallest ratio necessary to produce a neutral electrical charge. In chemistry, we utilize chemical formulae to explain the constituent parts or molecules of a substance.

Given, initial amount of CuSO4 = 0.0850 mole

amount of CuSO4 consumed in reaction = 0.0832 mole

remaining amount of CuSO4 = 0.0850 - 0.0832 = 0.0018 mole

now, 0.0018 mole CuSO4 × (6.02×10²³ f. u./1 mole) = 1.084×10²¹ f. u.

There will be 1.084×10²¹ formula units are left un-reacted.

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If the reaction uses up 0.0832 mol copper sulfate there will be 1.084×10²¹ formula units are left un-reacted.

A formula unit is the part of an ionic compound's chemical formula that lists the ions in the smallest ratio necessary to produce a neutral electrical charge. In chemistry, we utilize chemical formulae to explain the constituent parts or molecules of a substance.

Given, initial amount of CuSO4 = 0.0850 mole

amount of CuSO4 consumed in reaction = 0.0832 mole

remaining amount of CuSO4 = 0.0850 - 0.0832 = 0.0018 mole

now, 0.0018 mole CuSO4 × (6.02×10²³ f. u./1 mole) = 1.084×10²¹ f. u.

There will be 1.084×10²¹ formula units are left un-reacted.

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The concentration of pollen in the air can have a significant impact on individuals with allergies. Pollen counts are typically measured in the number of pollen grains per cubic meter of air (pollen grains/m3). The concentration at which allergic reactions occur can vary depending on the individual's sensitivity, the type of pollen, and other environmental factors.

According to the American Academy of Allergy, Asthma, and Immunology (AAAAI), concentrations of less than 100 pollen grains/m3 of air in a 24-hour period usually do not produce allergic reactions in most individuals. However, for highly sensitive individuals, even lower concentrations may trigger symptoms.

It's important to note that pollen counts can vary widely depending on the time of day, weather conditions, and other factors. Pollen counts are often highest in the early morning and on warm, dry, and windy days. It's recommended that individuals with allergies monitor pollen counts and take precautions, such as staying indoors during peak pollen hours or wearing a mask when outdoors, to minimize exposure to pollen.

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Answer:

The Answer is A. Scavengers

Given that a sample of gas with fixed amount is compressed to one-half of its initial volume at constant temperature. We have to determine the final pressure of the gas.

The final pressure is twice the initial pressure.Explanation:From the Boyle's law, we know that pressure is inversely proportional to volume. That is, as the volume decreases, the pressure will increase. This relationship is given by;P₁V₁ = P₂V₂

where,P₁ = Initial pressureV₁ = Initial volumeP₂ = Final pressureV₂ = Final volumeSince the sample of gas is compressed to one-half of its initial volume, then V₂ = 1/2 V₁Substituting these values in the above equation, we have;P₁V₁ = P₂V₂P₁V₁ = P₂(1/2 V₁)2P₁V₁ = 2P₂V₁P₁ = 2P₂Therefore, the final pressure is twice the initial pressure.

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Answer:

63%

Explanation:

About 63% of this electricity generation was from fossil fuels—coal, natural gas, petroleum, and other gases. About 20% was from nuclear energy, and about 18% was from renewable energy sources.

Hope this helped you!

Answer:

\(71.7\%.\)

\(Coal, \: crude \: oil, \: and \: natural \: \\ gas \: are \: all \: considered \: fossil \: fuels \\ coal \: 48.5 \\ natural \: gas \: 21.6 \\ petroleum \: 1.6

\)

\(the \: sum \: of \: the \: three \:: \\ (48.5+ 21.6+ 1.6) = 71.7.\)

The chemical structure of ammonia (NH3) has polar bonds, trigonal pyramidal shape, and it is a polar molecule.

In ammonia (NH3), the nitrogen atom is more electronegative than hydrogen. As a result, the nitrogen-hydrogen bonds are polar, with nitrogen having a partial negative charge (δ-) and each hydrogen has a partial positive charge (δ+).

It has a pyramidal molecular shape. The lone pair of electrons on the nitrogen atom pushes the three hydrogen atoms away from it, resulting in a trigonal pyramidal geometry. Ammonia (NH3) is a polar molecule due to the presence of polar bonds and its asymmetric shape.

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The properties of the elements can be determined from their electron configuration

outer electron : 2 (3s²)

lose(2 electron)

charge : +2

cation (positive)

symbol : Mg²⁺

outer electron : 7 (4s²4p⁵)

gain ( 1 electron)

charge : -1

anion (negative)

symbol : Br⁻

Helium⇒electron configuration : 1s²

outer electron : 2 (1s²)

stabil(no gain/no lose)

charge : 0

neutral

symbol : He

outer electron : 5 ( 2s²2p³)

gain(3 electron)

charge : -3

anion

symbol : N³⁻

Answer:

a. pH = 2.22.

b. [H+] = 2.588 x 10⁻⁴ mol/L.

Explanation:

Acids and Bases => Calculating pH of Acids and Bases.

As we saw before, the formulas to find the pH based on the hydrogen ion concentration [H+], and to find the hydrogen ion concentration [H+] based on the pH are the following, respectively:

So let's see each case:

a. To find the pH of an H+ concentration of 6.02 x 10⁻³ mol/L we use the pH formula:

The answer would be that the pH is 2.22.

b. To find the H+ concentration of a pH of 3.587, we use the [H+] formula:

The answer would be that the hydrogen ion concentration [H+] = 2.588 x 10⁻⁴ mol/L.

Answer:

A. mass

Explanation:

On edgenuity 2020

The property of matter that is conserved in chemical reactions is mass. The correct option is A.

The law of conservation of mass implies that mass is never be created nor destroyed in a chemical reaction.

The law of conservation of mass, also known as the principle of mass conservation, implies that for any system closed to all transfers of matter and energy.

The mass of the system must remain constant over time, because the system's mass cannot change, and thus quantity cannot be added or removed.

The law of conservation of mass was critical to the advancement of chemistry.

It assisted scientists in understanding that substances did not disappear as a result of a reaction, as they may appear to do, but rather transformed into another substance of equal mass.

Thus, the correct option is A.

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The result obtained by converting 20 quibs of skvarnick to sleps, given that 5 quibs of skvarnick is equal to 3 sleps, is 12 sleps

We can convert quibs to sleps by using the following conversion scale:

5 quibs of skvarnick = 3 sleps

With the above conversion scale we can convert 20 quibs of skvarnick to sleps as illustrated below:

5 quibs of skvarnick = 3 sleps

Therefore,

20 quibs of skvarnick = (20 quibs × 3 sleps) / 5 quibs

20 quibs of skvarnick = 12 sleps

Thus, from the calculation made above, we can conclude that 20 quibs is equivalent to 12 sleps

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According to the analytical paper available in e-learning, there are 4 fatty acids found in soybean oil in significant quantities. The correct option is B.

These fatty acids are:

1. Linoleic acid (Omega-6): Linoleic acid is a polyunsaturated fatty acid and is essential for human health as it cannot be synthesized by the body. It plays a vital role in maintaining cell membranes, supporting the immune system, and providing energy.

2. Oleic acid (Omega-9): Oleic acid is a monounsaturated fatty acid that is beneficial for cardiovascular health. It helps to reduce LDL (bad) cholesterol levels while maintaining or increasing HDL (good) cholesterol levels.

3. Palmitic acid: Palmitic acid is a saturated fatty acid that is a common component in various plant oils. While saturated fats are generally considered less healthy, palmitic acid can still be part of a balanced diet.

4. Stearic acid: Stearic acid is another saturated fatty acid that is commonly found in plant oils. It has a neutral effect on blood cholesterol levels and can be safely consumed in moderation.

In conclusion, soybean oil contains 4 fatty acids in significant quantities. These fatty acids contribute to the overall nutritional profile of soybean oil and have various health benefits when consumed as part of a balanced diet.

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4.37 g/cm³ is the density of rhodium in grams per cubic centimeters.

What is the atomic weight of rhodium?

The atomic weight of rhodium is 102.9 g/mol. This means that one mole of rhodium atoms has a mass of 102.9 grams. Rhodium is a rare, silvery-white metal that is highly reflective and has a high melting and boiling point. It is often used in catalytic converters, electroplating, and jewelry. The atomic weight of rhodium is an important factor in determining its physical and chemical properties.

To calculate the density of rhodium, we need to divide its atomic weight by its volume. The volume of an fcc crystal can be found by using the formula:

V = a^3/2

where a is the atomic radius. Substituting the values, we get:

V = (0.1345 nm)^3/2 = 2.36 x 10⁻²³ cm³ .

Therefore, the density of rhodium is 102.9 g/mol / 2.36 x 10⁻²³ cm³ = 4.37 g/cm³.

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The molecular formula for propane is C3H8.

Propane is a hydrocarbon with three carbon atoms and eight hydrogen atoms. Its three-dimensional structure consists of a central carbon atom bonded to two other carbon atoms, each of which is bonded to three hydrogen atoms. The molecule is shaped like a V with the central carbon atom at the vertex and the three hydrogen atoms at each end of the V.

The molecular formula for propane is C3H8, and its three-dimensional structure consists of a V-shaped molecule with a central carbon atom and three hydrogen atoms at each end of the V.

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Propane has  molecular formula: \(C_{3} H_{8}\)

What does "molecular formula" mean?

A molecule's molecular formula, which specifies the types and quantities of atoms that go into it, serves as a representation of a chemical complex. In addition to giving important details regarding the makeup of the compound, it frequently serves as a way of identifying and differentiating various substances.

Chemical symbols for the components of a compound's molecular formula serve to identify the kind of atoms they include. Subscripts are used to indicate the number of atoms of each element in a molecule. To the right of the chemical symbol are the subscripts' numerical components.

Eight hydrogen atoms (H) and three carbon atoms (C) make up the chemical molecule propane.

It belongs to the alkanes class and has the chemical formula : \(C_{3} H_{8}\)

Throughout its structure, a linear chain of three carbon atoms is present. Each carbon atom forms four single covalent bonds, three to hydrogen atoms and one to the other carbon atoms in the chain.

The chemical formula of propane, which indicates that it has three carbon atoms and eight hydrogen atoms, represents the ratio of carbon to hydrogen atoms in propane.

Overall, the molecular formula and three-dimensional structure of propane are true representations of its atomic structure and arrangement.

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Answer

A

Explanation

According to the picture given, actoivation energy is the distance from the reactants to the top of the hill.

Answer:

The presence of a new substance with different properties from the reactants is the one true way to determine if a chemical reaction has occurred.

As a result, the material with the lowest boiling point will have the maximum vapor pressure at ambient temperature. The material with the lowest vapor pressure is that which has the greatest boiling point.

What variables influence vapor pressure?

Vapor pressure is the name given to the force produced when liquids evaporate. Three factors that typically affect vapor press performance are surface area, intermolecular forces, and temperature. Molecules have variable vapor pressures depending on their temperature.

What is vapour pressure, for instance?

It is essential to remember that a liquid's vapor pressure is equal to the atmospheric pressure while it is boiling. For instance, water's vapor pressure when it boils at sea level is 1 atmosphere since the surrounding pressure is also 1 atmosphere.

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Answer:

Electrophoresis could be inaccurate or unreliable

Explanation:

If the DNA samples were transferred to the wrong well of the gel plate, the results of the gel electrophoresis could be inaccurate or unreliable. This is because the position of the DNA samples on the gel is critical for accurate separation and analysis of the DNA fragments. If the DNA samples were transferred to the wrong well, they may not be properly separated or identified, which could lead to incorrect conclusions about the DNA samples. Additionally, if the samples were mislabeled, the researchers could misinterpret the results, which could also lead to incorrect conclusions about the DNA samples. Therefore, it is important to carefully label and transfer DNA samples to the correct wells on the gel plate to ensure accurate and reliable results.

note: ask to biology next time sir

ALLEN