the 2s and 2p sublevels are very close in energy, as are the 3s and 3p sublevels. explain how the orbital diagram for sodium confirms that the 3s sublevel is lower in energy than the 3p sublevel

if 100. ml of the solution in part 1 is concentrated by evaporation to give a final volume of 1.00 ml, the change in pH decreases by 2 pH increases by 2.

what is evaporation?

However, This procedure is therefore stated to include a shift in the liquids' condition of matter.

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A nuclide is formed in the process [tex]^{206}Pb[/tex].

Polonium is а rаdioаctive element thаt occurs nаturаlly in very low concentrаtions in the eаrth’s crust. Mаrie аnd Pierre Curie discovered polonium in 1898 while they were seeking the cаuse of the rаdioаctivity of pitchblende ore thаt contаined urаnium. Polonium in its pure form is а low-melting, fаirly volаtile metаl. Аll polonium isotopes аre rаdioаctive, but most аre very short-lived аnd decаy rаpidly. Only three polonium isotopes lаst for аny аppreciаble аmount of time. Those isotopes аre polonium-208, polonium-209, аnd polonium-210.

Polonium-210 is the predominаnt nаturаlly occurring isotope of polonium аnd the one most widely used. Polonium-210 hаs а hаlf-life of 138 dаys, аnd it decаys to stаble leаd-206 by emitting аn аlphа pаrticle (аn аlphа pаrticle hаs two protons аnd two neutrons).

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In phosphorous pentachloride, also known as pcl5, the central p atom's hybrid orbital, designated Sp3d, forms a sigma bond with an exterior cl atom. The P molecule hybridization is indicated by the symbol sp3d.

To create 5 P-Cl sigma bond in this situation, the P atom needs 5 orbitals. It needs to create the fifth sigma bond using one of its three 3d orbitals because it has three 3s and two 3p orbitals. These orbitals are combined to create five sp3d orbitals, making a triangular bipyramid. The process was referred to as hybridization, and it was characterized as the redistribution of the energy in the individual atoms' orbitals to create new orbitals with equivalent energy. The new orbitals are created and given the term hybrid orbitals. Is known as hybridization.

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Explanation:

enzymes are biological catalysts that increase the rate of reaction without being used up in the reaction process.

this is done by providing an alternative route to the reaction progress that'll require a lower activation energy.

example - digestive enzyme Amylase, is used to breakdown sugars into glucose for cellular respiration.

hope it helps. :)

There is 12.4g of silver chromate.

Almost all alkali metal compounds and nitrates are soluble, but most silver compounds are not. Therefore, when the soluble salts silver nitrate and sodium chromate are mixed, insoluble silver chromate is formed and precipitated. This method involves titrating the chloride ion concentration in a solution with silver nitrate. A silver chloride precipitate forms when the silver nitrate solution is slowly added.

The endpoint of the titration is when all chloride ions have precipitated. Silver chromate precipitates as a brick-red precipitate from aqueous solutions. This reaction is also called a precipitation reaction. A precipitate is an insoluble solid that forms when solutions are mixed. For precipitation titrations with silver nitrate, a suitable indicator indicates the end point of the titration by a color change when there is excess Ag+ in the solution.

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Na⁺ and Br⁻ are the spectator ions in the reaction.

Those ions which do not participate in the chemical reaction and are present on both sides of the reaction i.e. reactants side and the products side are known as spectator ions. The reaction between aqueous hydrobromic acid and aqueous sodium hydroxide is as follows:

HBr (aq) + NaOH (aq)  → NaBr (aq) +  H₂O (l)

As clear from the above equation that HBr, NaOH and NaBr are completely ionized in water and the complete equation with ions is as follows:

H⁺ + Br⁻ + Na⁺ + OH⁻    → Na⁺ + Br⁻ + H₂O

So Na⁺ and Br⁻  are the ions which are taking part in the reaction and also present on both sides of the arrow so these two ions are spectator ions.

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According to combined gas law:

[tex]P_{1}V_{1}/T_{1}=P_{2}V_{2}/T_{2}[/tex]

So, given [tex]P_{1}=95kpa,V_{1}=4l,P_{2}=101kpa,V_{2}=6l,T_{2}=471k[/tex]

After substituting values in the formula,

[tex]95*4/T_{1}=101*6/471[/tex]

[tex]T_{1}=295k[/tex]

What is the Combined Gas Law?

        PVT=k (k being the proportionality constant)

Thus, the original temperature is 295k.

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This is related to how polar each water molecule is.

Each water (H2O) molecule has an electric charge on its side of hydrogen, which is slightly positive, and on its side of oxygen, which is slightly negative. It facilitates the separation of ionic compounds into their positive and negative ions in water.

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My prediction on the conspicuous changes which occurs simultaneously during flooding activities is that it decreases the oxygen levels which are available to habitat and even destroy the community.

The oxygen levels are affected whenever flooding activities occur in a given habitat when its activities damage the community by way of sedimentation.

So therefore, we can now confirm from the explanation above that when flooding occurs to a given habitat of organisms, it reduces the quality of water levels which directly affect the oxygen levels too.

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Answer:

4Fe(s) + 3O₂(g) = 2Fe₂O₃(s)

HCl⟶H++Cl−

HI⟶H++I−

According to, the molarity of H+ is the same as HCl, because it is a strong acid and the mole ratio. So, I added the molarity of both acids: 0.15 M+0.055 M=0.205 M for H+ in solution.

pH= −log [H+]

pH= −log [0.205]

pH= 0.689

cHI(H+)=c(HI)cHCl(H+)=c(HCl)

Now you need to determine the amount of the protons in each solution with

n=c⋅V.

You have to add the amount of protons in each solution and determine the combined volume.

ntot(H+)=nHI(H+)+nHCl(H+)Vtot=V(HI)+V(HCl)

To calculate the pH of the resulting concentration, just take the negative logarithm.

pH=−logctot (H+) = −log[ntot (H+) Vtot]

pH is the negative logarithm of hydrogen ion concentration in a solution.

It determines the acidity and basicity of the solution.

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The percent difference between the pressure calculated using the van der waals' equation and the ideal pressure is 5.89 %.

This can be calculated using van der waals' equation, followed by calculating pressure difference by: [P(ideal)-P(Van der waal's equation)/P(ideal)]*100

P(ideal) is given: 16.45

P(van der waals'): [tex](P+n2aV2)(V−nb)=nRT[/tex]

T= 270.9K  

V=1.301 L

a for oxygen = 1.36 (L2 atm mol-2)

b for oxygen =  0.0319 (L mol-1)

n= 0.9686 mol

Using equation P(van der waals's) = 15.48 bar

and difference is 5.81%

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In a chemical reaction, 0. 3 moles of H2O result in the production of 0.2 moles of CO2. Chemical reactions are the means through which one group of chemical compounds are changed into another.

Chemical reactions are typically defined as changes that only affect the positions of electrons in the formation and breakage of chemical bonds between atoms, with no change to the nuclei (i.e., no change to the elements present). These types of changes are often included in the term chemical reactions.

Number of moles Definition We utilize this enormous quantity to measure atoms. Additionally, it equals the 6.022* 10 23 atoms that make up 12 grammes of carbon-12, or atoms.

C2H6 + 7/2O2 = 2CO2 + 3H2O,

where moles(CO2)=(2*0,3)/3=0.2 mol,

and n(CO2)=(2*0,3)/3=n(H2O);

n(CO2)=n(CO2)=n(H2O).

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The  MgSO₄ (magnesium sulfate) remove water molecules entrapped in biodiesel. Ion dipole are the interactions that allow this to work.

Diesel fuel can be replaced by domestically produced, clean-burning biodiesel. The use of biodiesel as a vehicle fuel increases energy security, benefits the environment and the air we breathe, and enhances safety. Animal fats, used cooking oils, yellow grease, and vegetable oils can all be used to make biodiesel. The process of transesterification, which turns fats and oils into biodiesel and glycerin, produces the fuel. The electrostatic attraction between an ion and a dipole-containing neutral molecule produces an attractive force known as the ion-dipole force. typically located in solutions. important in particular for ionic compound solutions in polar liquids.

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When using lithium-based batteries In order to enable optimal recharging, store the batteries in a fridge.

As long as there are no flaws as well as the cells are not damaged, lithium batteries are type of ethical and unlikely to malfunction. Lithium batteries may pose a fire and/or detonation risk if they are damaged or unable to function safely.

For reliable and high-power use, lithium-ion and battery packs are both appropriate. But compared to battery packs, battery packs are more effective and common. This is so that they may be used in large quantities due to their higher power levels.

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The type of quantitative chemical method was used to determine the precise concentration of hydroxide in the experiment is titration.

Titration is quantitative chemical method used to determine the concentration of unknown solution by using the known concentration of solution. the solution with the known concentration is called as the titrant. the solution of the unknown concentration is called as analyte. titrant is added from burette to known quantity of solution of unknown concentration that is analyte until the reaction is complete.

Thus, The type of quantitative chemical method was used to determine the precise concentration of hydroxide in the experiment is titration.

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Answer:

I presume you are talking about Nitric Oxide so the molar mass of NO is 30g/mol 30 g / m o l.

Then you should substitute the respective values from the formula above.

Doing that the mass of NO formed is 4.413 g or just 4.4 grams.

Potassium chloride can be defined as a metal halide salt composed of potassium and chlorine. It is odorless and has a white or colorless.

To prepare Potassium Chloride from Potassium Chloride Solution.

1. KCl can be analyzed by reacting bases of potassium (such as potassium hydroxide) with hydrochloric acid. This ensures acid-base neutralization reaction will yield water and potassium chloride as the products.

KCL + HCL = KCL + H2O

2. Boiling the solution can help in removing the water until a super-saturated solution is obtained and then cooling the super saturated solution at room temperature and introducing a seed crystal of Potassium chloride, crystals of Potassium chloride are obtained.

This is how , pure crystals of potassium chloride from potassium chloride solution

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14:1 (delta 11) denotes the presence of a single double bond at carbon 11, starting at the carboxyl terminus, in the fatty acid.

How is omega-3 created?

The chloroplasts of plants, including grass, leaves, green algae, and other plants, produce omega-3s. Fish, animals, and humans are unable to make omega-3s on their own. Instead, they obtain them from this vegetation.

Explanation:

With the exception of steroids, fatty acids are carboxylic acids that provide the structural foundation of fats, oils, and all other types of lipids. More than 70 have been found in the natural world. They are typically unbranched, have an even number of carbon atoms, and can be divided into groups based on the existence and quantity of carbon-to-carbon double bonds.

14:1 (delta 11) denotes the presence of a single double bond at carbon 11, starting at the carboxyl terminus, in the fatty acid.

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The ratio :14 (delta 11) inside the fatty acid indicates a lone double bond at carbon 11, starting at the 3'-end.

In their chloroplasts, plants such as grasses, leaves, cyanobacteria, and other flora all produce omega-3 fatty acids. Fish, animals, or humans cannot create omega-3s on their own. Instead, they get them from this facility.

Fatty acids, which are naturally acidic, are the components of oils, oils, and other lipids as well as the legos of steroids. The natural world has more than 70 that have been discovered. They can be classified into categories based on the number and amount of coal single bonds, and are often spindle-shaped.

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The polarity equation is given, masks are divided by smaller mosques, and all are divided by the volume of solution in liters.

As a result, we will obtain a number closer to 1.49. Thus, the original solution's polarity is as follows.

The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. Molarity is defined as the number of moles of solute per liter of solution.

The moles of solute per liter of solution is measured as molarity. For instance, when table salt is dissolved in water, water serves as both the solution and the solute. Sodium chloride weights 58.44 grams per mole. One liter of water and 58.44 grams of sodium chloride combine to form one molar solution, or 1M.

100 g of a solution Additionally, it is assumed that the starting density is 1.02 grandpa. We can therefore determine the volume or solution from this information. Volume of the solution is therefore equal to the solution's mass divided by its city. So we have 100 g of solutions here. Therefore, 100 g make up the majority of the solution. Divided by the solution's density, 1.02 grandpa is obtained. The result will be 98.04 cm. The volume motor solution is now available. Next, we may determine the initial solution's polarity. As a result, we have the polarity equation, which is provided as smaller mosque divided by masks.

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There are two unpaired electrons in the carbon atom and the carbon atom is paramagnetic.

To check whether an atom atom has any unpaired electron we should check the electronic configuration of that atom.

The electron configuration of the carbon atom is given as,

[He]2s²2p²

According to the orbital diagram of the p orbital, there are two electrons in the P orbital which are unpaired in the carbon atom.

It means that the carbon atom has to unpaired electrons.

Because the carbon atom has two unpaired electrons it is paramagnetic in nature.

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the mole percent of oxygen be in the diving gas for the partial pressure of oxygen in the mixture to be 0.21 atm , the same as in air at 1 atm is 2.52%

Atm 8.32 is the total pressure.

0.21 atm is the partial pressure of oxygen gas.

The relationship between partial pressure, total pressure, and mole fraction is depicted here.

partial oxygen pressure Total pressure x Mole percent of oxygen -

Calculate the gas's mole fraction of oxygen.

0.21 atm 8.32 x Mole fraction

Mole fraction = 0.21/8.32 = 0.0252

As illustrated below, determine the mole percent of the gas. Mole percent is equal to the mole fraction divided by 100, which is 0.0252 times 100 and 2.52% respectively.

As a result, oxygen's mole percent is 2.52%.

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Answer:

N2O3= Dinitride Trioxide

CO= Carbon Oxide

SO3= Sulfide Trioxide

Explanation:

Di= 2

Tri= 3

All the three phases (solid, liquid, gas) of matter make up the atmosphere.

Phases are also known as state - states of matter or phases of matter. There are generally three states of matter - Solid, liquid, and gases.

             Among all three gases have the lowest density as they have the weakest intermolecular forces. If gases are put in a container, then they fill up the entire volume of the container. In gases, the molecules are constantly moving and getting replaced by other gas particles.

      In contrast to gases, the liquids have relatively higher intermolecular forces and are relatively dense and incompressible. In liquid we can determine the viscosity that is - the rate at which they flow.

      Solids are relatively dense, rigid and have highest intermolecular force unlike liquids and solid. In solids, the molecules are compactly packed, hence preventing the molecules from moving from its place.

Complete question: -

Matter can be broadly described as a solid, liquid, or gas. (There are more exotic states, including plasma, but we will ignore them for now.) In which phase of matter is the material that makes up the atmosphere? A. solid B. liquid C. gas D. All of these

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Ductility is the physical property of matter which indicates ability to be stretched into a wire without breaking.

Due to its physical attribute of ductility, metal will stretch as opposed to breaking when pulled. In other words, a material's ductile qualities are its capacity to experience significant plastic deformation under tensile stress prior to rapture. Nickel, copper, steel, and other ductile materials are examples.

Brittleness is the property of metals that accounts for their breaking under tensile stress without producing stretch. Another name for it is abrupt failure. Glass, iron, and other fragile materials are examples.

The ability of a material to absorb mechanical overload is determined by its ductility, which is a crucial factor in engineering and manufacturing.

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The frequency of light affects the color of an object by an increase bringing about a change from red to orange to yellow etc.

This is used to refer to the number of occurrences of a repeating event per unit of time and the unit is hertz.

As the frequency increases the color changes which is because colors such as red have the lowest frequency while violet has the highest frequency. As the frequency changes, there is also a corresponding change in the color and the one perceived by the eyes is in its appropriate range.

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The reason that some scientists did not agree with Newlands 'Law of Octaves' was Because so many new elements were still being found and could not be included in the table, many scientists did not agree with Newland's law of octaves.

He placed sulfur (S) and oxygen (O), two non-metals, in the same group as iron (Fe), a metal, as an illustration. His table was rejected by other scientists as a result.

Additionally, not all of the elements in his octaves shared the same characteristics. For instance, in the seventh octave, O (Oxygen, a non-metal), and Fe (Iron a metal).

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If x represent the molar solubility of Ba₃(PO₄)₂ Bax₃(POx₄)x₂  the correct equation for Ksp is (3x)³(2x)².

The equation is given as :

Ba₃(PO₄)₂    ⇄   3Ba²⁺   +    2PO₄³⁻

if x represent molar solubility then , we get :

Ba₃(PO₄)₂    ⇄    3Ba²⁺   +    2PO₄³⁻

                                 3x                 2x

therefore , the solubility product constant is given as :

Ksp = (3x)³(2x)²

The solubility product constant is the equilibrium constant which used for the dissolving of solid substances into the aqueous solution. The solubility product constant  is denoted as Ksp. The value of solubility constant depends on temperature.

Thus, If x represent the molar solubility of Ba₃(PO₄)₂ Bax₃(POx₄)x₂  the correct equation for Ksp is (3x)³(2x)².

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Answer:

Boiling point decrease from left to right of the periodic table

The molarity of the K₂CO₃ solution is 2.36 M.

The unit of molarity is molar or M is the same as moles per liter, when n moles of a compound appear that have been dissolved in V liters of solution, the molarity formula is [tex]M = n/V[/tex]

M = molarity

n = number of moles

V = volume of solution

The concentration of the solution states the quantitative composition of the substance that has been dissolved and the solvent in the solution. Determination of the concentration or vice versa depends on the number of solution ratios of each substance that enters. Chemical reactions occur during the process and result from the presence of the same solution.

So, the molarity of the K₂CO₃ solution is:

[tex]M =6.63/2.8[/tex]

[tex]=2.36[/tex] M

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