based on the position of the elements on the periodic table, which hydrogen bond would result in the greatest difference in electronegativity?

Trigonal pyramidal molecular geometry

sp3 hybridization

sp³ - 4 p

There is some information missing. This, I believe, is the original question.

What are the electron-pair and molecular geometries of NBr3? What exactly is nitrogen atom hybridization? What orbitals on N and Br overlap to form these elements' bonds?

The overlap of the __ hybrid orbitals on nitrogen with the __ orbitals on Br forms the N-Br bonds.

The central atom of nitrogen is surrounded by four electron domains. The corresponding electron-pair geometry, according to VESPR, is tetrahedral.

Three of these four electron domains are covalent bonds with Br and one is a lone pair. The corresponding molecular geometry, according to VESPR, is trigonal pyramidal.

The nitrogen atom has a 1 s orbital and a

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The heat of fusion is the amount of heat energy needed to turn anything solid into a liquid. There is a formula, Q = mHf. Because matter doesn't affect temperature, the temperature is not a factor.

There is no increase in the kinetic energies of the particles, and hence no rise in temperature, because the energy required for phase shifts is employed to break bonds. Similarly, energy is required to evaporate a liquid to defeat the attraction forces between the liquid's particles.

The energy that is given during a change in the state of matter is used to alter the binding energies rather than boost the kinetic energy of the molecules. As a result, the temperature doesn't change.

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The chemical formula for water is H2O. A water molecule consists of one oxygen atom bonded to two hydrogen atoms. Oxygen is more electronegative than hydrogen, meaning it has a higher tendency to attract electrons. This creates a partial negative charge on the oxygen end of a water molecule. The hydrogen ends of the molecule develop a partial positive charge. Ethanol is made up of two carbon atoms, six hydrogen atoms and one oxygen atom. Its chemical formula is CH3CH2OH. Ethanol contains a hydroxyl group, which is an oxygen atom bonded to a hydrogen atom. Just like in water, this bond between oxygen and hydrogen is partially negative at the oxygen end and partially positive at the hydrogen end.

Water has strong intermolecular forces (hydrogen bonds). Ethanol (CH3CH2OH) have hydrogen bonds but these are slightly weaker than the hydrogen bonds in water.

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Methane is a colorless, odorless gas that is present in large quantities in nature and as a byproduct of some human activities.

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The structure of a soap micelle similar to the structure of a globular protein because  both have polar interiors and nonpolar surfaces. on a micelle, the nonpolartails of the fatty acid salts face outwards into the aqueous environment, similar to the nonpolar tails amino acid side chains on the globular protein. the polarheads of the fatty acid salts gather together in the interior of the micelle just as the nonpolar amino acid side chains gather in the interior of the globular protein.

Colloids that form micelle are linked together and arranged radially. At low concentrations, they act as strong electrolytes as they should, but at greater concentrations, they act like colloidal particles. Up to 100 molecules or more may be present in micelle. For instance, soap releases sodium and stearate ions as it dissolves in water.

The form of the 3D molecular structure of globular protein can range from a sphere to a cigar. A globular protein's structure typically consists of three or four layers. Simple amino acid sequences that create peptide chains make up the fundamental structure.

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the largest cell potential when used along with a Mn/Mn2+ is Cu²⁺/Cu

A voltaic cell or galvanic cell is a battery that uses electrochemical energy produced from redox reactions to produce electricity. In this reaction, manganese is the anode and copper is the cathode.

Half-cell responses and respective cell potentials are shown below.

Mn = Mn²⁺ + 2e⁻        E°=-1.18V

Zn²⁺ +2e⁻  = Zn          E° = -0.76V

Pb²⁺ + 2e⁻ = Pb          E° -0.13

Cu²⁺ + 2e⁻ = Cu          E° 0.34

When Solving Cell Potentials

E° cell = E° cathode -E° anode

for Mn and Zn.

Mn (s) + Zn²⁺(aq)→ Mn²⁺(aq)+Zn(s)

E° cell = −0.76v−(−1.18v)=0.42v

For Mn and Pb the following applies:

Mn(s)+ Pb²⁺(aq) → Mn²⁺(aq) + Pb(s)

E° cell = −0.13v−(−1.18v)=1.05v

For Mn and Cu:

Mn(s)+ Cu²⁺(aq) → Mn²⁺(aq) + Cu(s)

E° cell = 0.34-(-1.18) = 1.52V

The Cu  happens to be the largest among the others.

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According to Dr. Martin Seligman, there are five essential elements that must be present for an individual to experience well-being:

Well-being is a state of mind, body, and spirit that allows individuals to be at peace, content, and fulfilled in their lives. Dr. Martin Seligman, a leader in the field of Positive Psychology, has identified five essential elements that must be present for an individual to experience a true sense of well-being.

Positive emotion involves feeling joy, pleasure, and satisfaction in life. This can be achieved through self-care activities such as:

It is important to find activities that bring you joy and make you feel connected to yourself, other people, and the world around you.

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1. Calculate the molar solubility of CaF2 in the solution by using the Ksp value:

Ksp = [Ca2+] [F-]2

1.46 x 10-10 = [0.844 x 10-3] [x]2

x = 2.83 x 10-3 mol/L

2. Calculate the molar solubility of CaF2 in the solution by using the molar ratio of CaF2 to Ca(NO3)2:

Molar ratio= [CaF2]/[Ca(NO3)2]= 2.83 x 10-3/0.844 x 10-3 = 3.36

3. Therefore, the molar solubility of CaF2 in the solution is 3.36 x 10-3 mol/L.

What is Molar Solubility?

Molar solubility is a measure of how much of a given solute can be dissolved in a given solvent. It is expressed as moles of solute dissolved in one liter of solution. It is an important parameter in the field of chemistry and is used to calculate the amount of a solute that can be dissolved in a given volume of solvent.

The solubility of a given compound is affected by several factors, including temperature, pH, and the presence of other solutes in the solution. A higher molar solubility indicates that a greater amount of the substance can be dissolved in the solution.

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None of the statements given above are true. So, option E is the correct answer.

If the N/Z is too high,  it means that the number of protons is too less. In this case, the nuclide will undergo a beta decay process. It is done to increase the proton count. If the N/Z is too low, it means that there are more protons than neutrons, it will undergo positron emission and electron capture and not beta decay. Positron emission and electron capture increase the ratio, while beta decay decreases the ratio.

If the N/Z ratio is equal to 1, then only is the nuclide stable. The valley of stability is where the nuclides get stability based on their binding energy.

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Sodium (Na) requires the least amount of energy to remove the most loosely held electron from a gaseous atom in the ground state.

Why sodium requires least amount of energy to remove most loosely electrons?

One electron only makes up the outermost shell of sodium as its electronic configuration of sodium is 2,8,1. While bromine has seven electrons and calcium has two. Silver is also typically the least reactive. As a result, sodium is the element that can lose one electron with the least amount of energy.

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The molar mass of butane is 54.62mol^-1.

What do you mean by molar mass?

Substances take up space and have mass. Molecules, which make up substances, often need to be measured in experiments, and it is important that these measurements are accurate. But, how can we measure something so small in an accurate way? How do we normally measure molecules? In the science laboratory, we use a tool called an analytical balance to measure in grams.

Through careful calculation, scientists can determine the number of moles a specific reaction will need. A mole is a unit of measure that helps us compare particles of any given substance and its mass. If we already know the number of moles needed, we can use the concept of molar mass to calculate how many grams of the substance are required. The molar mass, also known as molecular weight, is the sum of the total mass in grams of all the atoms that make up a mole of a particular molecule. The unit used to measure is grams per mole.

Given,

Pressure = 1.007 atm = 1.02 bars

Volume = 26.7 ml = 0.0267L

Temperature = 20degree C= 293 K

By applying ideal gas equation ,

We can find number of moles of butane

 n = PV/RT

So, P*V=1.02 bar * 0.0267L = 0.027234

R*T = 0.083 (bar L K^-1mol^-1) * 293K = 24.319

Therefore, n = 0.027234/24.319 = 0.00119moles

Now,

To calculate molar mass of butane

We know,

Molar mass = mass of substance in gms/ no. of moles in substance

Here, mass of butane is given as 0.065gm

Therefore, molar mass = 0.065 /0.00119

= 54.62

Hence, molar mass of butane is 54.62mol^-1

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Mevalonate exists in equilibrium with compound x in aqueous solution.  the structure of compound x is a six membered ring.

The six membered is thermodynamically more stable so, the compound formed is six membered ring is more favorable. the both the  four membered and the peroxide are the high energy species. so, these are not able to form stable molecule as mevalonate. mevalonic acid is the organic compound discussed in the biochemistry. mevalonic acid contains the -CO₂H and -OH groups.

Thus , for the mevalonate exits is in the equilibrium compound x and the compound x is called the six membered ring.

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A reaction between 1.70 moles of oxygen and 0.1 moles of carbon dioxide results in a mole of CO2. As a first step, we'll write the reaction's balanced equation. What follows is that: 16CO2 and 18H2O are produced by adding 2C8H18 and 25O2.

The chemical process that generates energy and powers the metabolisms of most living things, respiration, depends heavily on oxygen. The oxygen in the air that we breathe is essential for the survival of humans and many other animals.

Wear your oxygen as directed by your healthcare practitioner. When utilizing supplemental oxygen, you may be receiving too much if you begin to feel headaches, disorientation, or excessive tiredness.

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According to question, HCl is the limiting reactant, al is not the limiting reactant.

Equation is  3Al + 6 HCl = 2AlCl3 + 3H2 , Moles of Al are 125 ÷ 27= 4.6 moles and moles of HCl(aq) are 3.20 × 2.50 = 8.0000 . It is clear that moles of HCl to react with 4.6 moles of al(S) must be 2× 4.6 ie 9.2 but there are only 8 moles of HCl(aq). It display al can't react completely. So HCl(aq) must be a limiting reactant.

What is Reactant?

A substance that coalesces in a chemical reaction, is an object that is present at the beginning of the reaction.

What are Moles?

A standard scientific unit for measuring large amount of very small articles such as atoms, molecules, or other special particles.

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The total number of calories that it contains is 301.15 calorie.

q = C ΔT

q = heat

C  = specific heat capacity

ΔT = Change in temperature or increment in temperature

q = 3 × 7

q = 21 Kj

It is for 1gm sample of candy.

for 60 gm candy,

q = 60 × 21 = 1260.

4.184 j = 1 calorie

1260 KJ = 301.15 calorie.

Food items typically have calorie counts listed on them, and wearables like the best fitness trackers let you keep track of how many calories you burn while engaging in various activities. There are some foods that typically have more calories than others, such as fatty, fried, or processed foods. Other foods, like fresh fruit and vegetables, typically have fewer calories. While low-calorie foods like diet soda have no nutritional value, some healthy fruits and vegetables can have a high calorie content. We require calories to provide us with the necessary energy to move around, stay warm, develop, work, think, and play. Even our blood circulation and digestion require the energy obtained from calories to operate properly.

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Alcohols undergo nucleophilic substitution reactions with hydrogen halides because the hydrogen halides are strong acids and can donate a hydrogen cation (H⁺) to the oxygen in the alcohol.

The donation of a proton creates a new cation and a new anion. The new cation acts as a nucleophile and attacks the electrophilic carbon in the hydrogen halide.

Halide salts, however, cannot undergo nucleophilic substitution reactions with alcohols because the halide ions (Cl⁻, F⁻ etc.) are already neutralized.

The halide ions do not have a hydrogen cation to donate to the oxygen in the alcohol and therefore cannot form a new cation and anion.

As a result, the nucleophilic substitution reaction cannot occur.

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The rate constant for the nuclide is 0.0803 min1.

What is first-order kinetics?

First-order kinetics refers to a type of chemical reaction in which the pace of the reaction is proportional to the amount of the reactant and is dependent only on the concentration of one component.

Two examples of first-order reactions are the aspirin hydrolysis and the reaction of t-butyl bromide with water to yield t-butanol. An such procedure that appears to have first-order kinetics is the hydrolysis of the anticancer drug cisplatin.

The concentration of one of the reactants affects the rate of a first-order reaction. The product of the concentrations of two reactants or the square of the concentration of a reactant determines the second-order reaction rate.

The rate constant for a first-order reaction can be determined by using the following equation:

k = -ln(N2/N1)/(t2-t1)

where N1 is the initial number of moles (12.9 g/98 g/mol = 0.131 mol), N2 is the final number of moles (2.04 g/98 g/mol = 0.0208 mol), t1 is the initial time (0 min) and t2 is the final time (23.0 min).

Plugging the values into the equation, we get:

k = -ln(0.0208/0.131)/(23.0-0) = -ln(0.0208/0.131)/23.0 = 0.0803 min-1

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The standard cell potential (e-cell) is a measure of the potential difference between two half-cells, each of which contains a reversible electrochemical reaction.

It is a measure of the maximum potential that can be achieved when the two half-cells are connected, with no external electrical circuit. The standard cell potential can be calculated by subtracting the standard reduction potential of the reduction reaction from the standard oxidation potential of the oxidation reaction.

The standard cell potential is expressed in volts and is a measure of the maximum amount of energy that can be released when the two half-cells are connected. It is the voltage that is available to power a device when the two half-cells are connected.

The standard cell potential is an important concept in electrochemistry, as it is used to calculate the Gibbs free energy of a reaction, and to determine the maximum theoretical yield of a reaction.

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element 1 is non metals, Hard Solid cube

Breaks into pieces of small bits when tapped with hammers- Brittle nature

element 2 is metals ,Moderately soft solid (may be soft metal).5*5 cm square with only 1mm thickness (form of sheets) : malleable nature.

On heating, it got softened : good conductor of heat.

METALS:

Metals occurs in solid state except mercury which is liquid form, rest all the metals are solid form. Metals are shiny, hard and strong opaque materials except sodium and potassium. Metals can be cut by knife. Metals are ductile in nature i.e., they can be stretched into wires. They are malleable in nature which can be cut into sheets. They have high density, high boiling and melting points. They are good conductors of electricity and heat.

NON-METALS:

Non-metals are soft/ hard and brittle in nature i.e., they can be break into pieces.

They are not ductile and malleable.

They have low density, boiling and melting points.

They are poor conductors of electricity and heat.

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The substitution of the sulfur‑containing alkyl chloride is much faster than the substitution of the analogous alkyl chloride.

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(Sodium iodide) NaI (s) → (Sodium) Na⁺(aq) + (iodide) I⁻(aq)

The chemical formula of sodium iodide is NaI. When NaI is dissolved in water, it dissociates into sodium ions (Na⁺) and iodide ions (I⁻). One mol of NaI gives 1 mole of Na⁺ ions and 1 mole of I⁻ ions.

Therefore, the chemical equation for the dissociation is the following:

NaI(s) → Na⁺(aq) + I⁻(aq)

What is sodium?

Sodium is a reactive, soft metal with a low melting point and most vital of all alkaline metals from the commercial viewpoint. It reacts speedily with water, snow, and ice to make sodium hydroxide. Sodium chloride is received by the reaction of sodium with chlorine. It is also consumed as a salt in fertilizers.

(Sodium iodide) NaI (s) → (Sodium) Na⁺(aq) + (iodide) I⁻(aq)

The chemical formula of sodium iodide is NaI. When NaI is dissolved in water, it dissociates into sodium ions (Na⁺) and iodide ions (I⁻). One mol of NaI gives 1 mole of Na⁺ ions and 1 mole of I⁻ ions.

Therefore, the chemical equation for the dissociation is the following:

NaI(s) → Na⁺(aq) + I⁻(aq)

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one mole of oxygen expands at constant temperature of 310 k from 12 l to 19 l. Work in joules is done by the expanding gas is 1180 j.

W for isothermal expansion

W=nRT ln (Vf/VI)

W= (1 mole)(8.31J/mole K)(310K) ln(19/12)

W=1180j

An ideal gas is one in which there are no intermolecular attraction forces and all collisions between atoms or molecules are entirely elastic. It can be seen as a group of perfectly hard spheres that collide but do not otherwise interact with one another. All of the internal energy in such a gas is kinetic energy, and any variation in internal energy causes a variation in temperature.

Three state variables—absolute pressure (P), volume (V), and absolute temperature—can be used to describe an ideal gas (T). Kinetic theory can be used to infer the link between them, which is known as the

                          PV = nRT = NkT

n = number of moles

R = universal gas constant = 8.3145 J/mol K

N = number of molecules

k = Boltzmann constant = 1.38066 x 10-23 J/K = 8.617385 x 10-5 eV/K

k = R/NA

NA = Avogadro's number = 6.0221 x 1023 /mol

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The ΔU for candy is  35.68kJ/g.

The HHV of a biomass fuel is calculated using a bomb calorimeter, which measures the heat released during the combustion of a specific amount of biomass sample. Following each test, a small amount of sample fuel is ground and diluted so that it will fit inside a capsule and be used in a bomb.

Mass of Candy = 0.2g

Mass of water = 2000 g

specific heat of water = 4.184 5g⁻¹°c⁻¹

Initial temperature = 25.00°C

final  temperature = 25.47°C

Change in temperature = final- Initial

Change in  temperature = 25.47-25.00

ΔT = 0.47°C

specific heat of calorimeter = 700J/k

Thus, Heat produced by the combustion of candy is absorbed by water and calorimeter.

Hence,

ΔU = Heat absorbed by water +  Heat absorbed by calorimeter

ΔU = mass × specific heat × ΔT + specific heat × ΔT

ΔU = 2000 × 4.184 × 0.79 + 700 × 0.79

ΔU = 6.604 kJ + 0.532kJ

ΔU = 7.136kJ.

Thus, 0.2g of candy produced heat = 7.136kJ

1g of candy produced heat = 7.136/0.2 = 35.68kJ/g

Thus ΔU for candy =  35.68kJ/g.

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The reaction between 96.7 g of fes2 and 55.0 l of o2 produced the volume of so2 (at stp) (at 398 k and 1.20 atm). Fes2's molar mass is 119.99 g/mol, which is equivalent to 32.94 L.

FeS2 weighs 96.7 g.

0.806 mol of FeS2 is equal to 96.7 g of mass divided by 119.99 g of molar mass.

----------------

Given 55.0 L of oxygen. We need to find the volume of Oxygen at STP as we need to determine the volume of SO2 at STP.

Hence, we use the equation, P1V1/T1 = P2V2/T2

(1.20 x 55.0) / 398 = (1.0 x V2) / 273

V2 = 45.27 L

Thus, volume of oxygen = 45.27 L

----------------------

Now, we need to find moles of oxygen using the equation PV = nRT

(1.0 x 45.27) = n (0.0821 x 273)

n = 2.02 mol

-------------------

Thus, the reactants we have are

Moles of FeS2 = 0.806 mol

Moles of oxygen = 2.02 mol

Now, we need to find the limiting reagent.  In order to find the limiting reagent we need to divide the moles we found with the respective stoichiometric coefficients.

Thus, moles of FeS2 = 0.806 mol / 4 = 0.2015 mol

Moles of O2 = 2.02 mol / 11 = 0.184 mol.

As, the moles of O2 are less than that of FeS2, O2 is the limiting reagent.

Hence, we use moles of O2(2.02 mol) to find the SO2 produced.

From the chemical equation, it is clear that 11 mol of O2 produces 8 mol of SO2.

Thus, 2.02 mol of O2 produces = (2.02 mol O2) x (8 mol SO2 / 11 mol O2) = 1.47 mol of SO2

Using PV = nRT, let us find volume of SO2.

(1.0)(V) = 1.47 x 0.0821 x 273

V = 32.94 L of SO2 is produced.

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While secondary and tertiary alcohols react using the elementary SN1 mechanism, where no carbocation is created, primary alcohols react using the SN2 mechanism, which entails the production of a carbocation.

You can tell the type of alcohol by looking at the carbon atoms connected to OH.The alcohol is classified as primary, secondary, or tertiary depending on the number of carbons that are connected to that carbon.

Alkyl groups in tertiary alcohols supply the oxygen of the alcohol with electron density, which lessens the alcohol's acidic intensity.Thus, as the number of alkyl groups attached to a alcohol functional group on carbon grows, the acidity of alcohol decreases.

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Aldehyde and ketone functional groups are two of the most important classes of organic compounds.  

Aldehydes are organic compounds in which a carbon atom is double-bonded to an oxygen atom, forming an aldehyde group (R-CHO).

The below-attached image clearly represents the aldehyde and ketone functional groups separately.

Aldehydes are generally considered to be more reactive than ketones. This is due to the fact that aldehydes contain two electron-withdrawing groups (the oxygen and the carbon-hydrogen bond), while ketones contain only one electron-withdrawing group (the oxygen). This makes aldehydes more prone to attack by nucleophiles, and thus more reactive.

Ketones are organic compounds in which a carbon atom is triple-bonded to an oxygen atom, forming a ketone group (R-CO-R).

Both aldehydes and ketones can react with nucleophiles, such as hydrogen, to form reactive intermediates. These intermediates can then react with other molecules, such as alcohols, to form new compounds. Aldehydes and ketones are also both capable of undergoing a variety of other reactions, such as oxidation, reduction, and condensation.

Aldehyde and ketone functional groups are important components of many natural and synthetic compounds, including carbohydrates, proteins, and drugs. They are also important industrial chemicals and are used in the production of a variety of materials, from plastics to pharmaceuticals.

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16.6 g of HCl must be added to a liter of a buffer that is 1.4 M in acetic acid and 0.75 M in sodium acetate to result in a buffer pH of 3.94.

A buffer is a solution that can withstand changes in pH caused by the addition of acidic or basic components. It can neutralize small amounts of added acid or base, allowing the pH of the solution to remain relatively stable. This is critical for processes and/or reactions that necessitate specific and stable pH ranges.

A buffer is made up of a weak acid and either its conjugate base or its conjugate acid. Buffer capacity is the amount of acid or base that can be added to a buffer before the pH changes. A buffer solution is bicarbonate in blood, which keeps the body's internal pH stable.

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The element could be X is phosporus .

An element is the fundamental item that can't be easily broken onto smaller of pieces. In chemistry and physics, an elementary is a substance that can't be broken down by non-nuclear reactions. In computing and the  mathematics, an element is the  distinct piece of a larger system or set.

An ionic compound is formed to the ions, by which their charges replaced, so the compound Na₂X is formed by the ions Na⁺ and X⁻². So, X must gain two electrons to be stable at to by  the octet, so it has six  valence of the electrons. Because of it can accommodate by  up to 12 electrons, the element  is the expands the octet, do it must to be in the 3rd period or the higher.

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A piece of dry ice, which is solid CO2, vanishes after some time at normal temperature. There is no liquid puddle. The CO2 gas solidified.

Carbon dioxide freezes into a substance called dry ice. Carbon dioxide travels directly from a gas to a solid rather than first becoming a liquid and then a solid. As a result, whenever it melts, gas is created as well.

Typically, dry ice is utilized in industry for tasks like blasting, preserving frozen goods, and transporting drugs. In addition, dry ice is employed in our daily lives for a variety of other things, such as producing special effects for movies and events.

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The Pressure of Dry H2 is 738.2 mm Hg.

The total pressure of an ideal gas mixture is equal to the sum of its component gases' partial pressures, according to Dalton's law of partial pressures, which summarizes this observation.

Saturated vapour pressure of this case is 3.8 mm Hg.

[tex]Pdihydrogen =742 mm Hg -3.8 mm Hg\\ = 738.2 mm Hg[/tex]

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