the karp-flatt metric helps to determine whether the decrease in efficiency is arsing due to higher serial fraction or parallel overhead.

A mixture of hydrogen gas and water vapor has a total pressure of 738 mm hg. if the partial pressure of water vapor is 17.5 mm hg,  the mole fraction of hydrogen in the mixture is 0.976 mol of hydrogen.

given that :

total pressure = 738 mmHg

partial pressure of water vapor = 17.5 mmHg

Total pressure = partial pressure of hydrogen +partial pressure water vapor

partial pressure hydrogen gas = total pressure-partial pressure water vapor

                                                 =  738 - 17.5

                                                = 720.5 mmHg

now the , the partial pressure is given as :

partial pressure of hydrogen gas = mole fraction × total pressure

mole fraction of hydrogen gas = partial pressure / total pressure

                                                 =   720.5 / 738

                                                 = 0.976 mol of hydrogen

Thus, A mixture of hydrogen gas and water vapor has a total pressure of 738 mm hg. if the partial pressure of water vapor is 17.5 mm hg,  the mole fraction of hydrogen in the mixture is 0.976 mol of hydrogen.

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From the periodic trends, one atom in the same group which is larger than a sulfur atom is selenium, and one which is smaller is oxygen.

From Coulomb's Law, the size of an atom decreases with an increase in the force of attraction and decreases with an increase in the forces of repulsion.

Sulfur belongs to group 6A or 16 of the periodic table.

Elements in group 6A have six electrons in their valence shells.

The valency of elements in group 6a of the period table is usually 2, 4 or 6.

Based on the periodic trends, the atomic size of elements in group 6A increases on going down the group due to an extra electron shell added to the atoms of the elements.

The other elements in group 6A are oxygen, selenium, and tellurium. etc.

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Drops of the titrant will adhere to the burette's walls, thus additional solution must be diluted into the analyte to make up for this. This will result in a higher volume reading (denominator), which will lower the molarity calculation.

The titrant is a solution with a known concentration that is added to another solution in analytical chemistry to measure the concentration of a different chemical species. The standard solution, reagent, or titrant are other names for the titrant.

In contrast, the species of interest during a titration is the analyte, or titrand. The analyte concentration can be ascertained when it reacts with a titrant that has a known volume and concentration.

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The photons have been calculated to contain about 4.97 * 10^-47 J/mol of energy.

We know that a photon is a unit of light. Better put, we can see the photon as a bundle of light and we are able to obtain the energy of that bundle of light as we can see.

Given that;

E = hf

E = energy of the photon

h = Plank's constant

f = frequency of the photon

Then

E = 6.6 * 10^-34 Js * 4.53 x 10^10 s-1

E =  2.99 * 10^-23 J

A mole would have to contain about 6.02 * 10^23 molecules so;

Energy per mole =  2.99 * 10^-23/6.02 * 10^23

= 4.97 * 10^-47 J/mol

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Missing parts;

How much energy, in joules per mole (J/mol), does a photon in the microwave region of the EM

spectrum, contain? Assume the microwave has a frequency of 4.53 x 1010 s-1. Your answer should

have 3 significant figures.

Answer:

Solubility is the best to dissolve

in ketose sugars, ring formation can occur because the ketone group reacts reversibly with a hydroxyl group in an aqueous solution. this process is termed " mutarotation".

A shift in the homeostasis between distinct anomers inside the solution causes mutarotation, which is a variation in the specific rotation with plane-polarized light. A hemiketal and hemiacetal group is required for any molecule to exhibit mutarotation. The earliest known example of mutarotation occurred in sugar.

When the matching stereocenters likely to recidivate, the equilibrium among two anomers changes, causing the optical rotation to change. This is known as mutarotation. The interconversion of the and anomeric forms causes the rotation of cyclic sugars.

Therefore, the correct answer will be option (C)

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Answer:

Gas

Explanation:

Similarly,if we heat a volume of water above 100 degrees Celsius, or 212 degrees Fahrenheit, water changes it's phase into a gas called water vapor

Answer:

4

Explanation:

When 5.86 moles of NaN3(Sodium Azide) is given then no. of moles of Na produced is 5.86 mol.

The inorganic substance with the formula NaN3 is sodium azide. The gas-forming element in older automotive airbag systems is this colourless salt. It is utilised to make additional azide chemicals. It is an ionic chemical that is exceedingly water soluble and extremely dangerous.

Na is the chemical formula used for the element having atomic number 11 and called as Sodium

Acc. to the given data following is the reaction occurring

2NaN3→2Na+3N2

Now to calculate the no. of moles of  Na

Multiply the given moles of sodium azide(NaN3) by the mole ratio between NaN3 and N2 from the balanced equation, with Na in the numerator. 2 mol Na:3 mol N2

5.86 molNaN3×2mol Na/2mol NaN3=5.86 mol Na

Hence, when 5.86 moles of NaN3(Sodium Azide) is given then no. of moles of Na produced is 5.86 mol.

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The answer is 12.5 mL.

Solution:

M, 6.00M          V₁ =?

M2 = 3.00M,    V₂ = 25.0mL

M1V1 = M2 V2/M1

V1 = M2V2 M,

V1 = 25.0X3.00/6.00

∴ V1 = 12.5 mL

The initial concentration of the resulting solution is 2 molar which is the volume multiplied by the concentration. The volume of the starting solution is therefore 2,500 ml × 2.25 mol. Calculate the number of moles of HCl dissolved in a given volume of acid by reacting an acid with CaCO3.

This is essentially a double exchange reaction with the decomposition of one of the products. To determine the amount of stock solution required divide the number of moles of glucose by the molarity of the stock solution.

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Wavelength is chosen by analyzing the spectrogram.

Wavelength can be defined as the distance between two successive crests or troughs of a wave. It is measured in the direction of the wave.

A spectrogram gives a going for walks show of a sound signal because it takes place in real time, a spectrum, however, offers us a photograph of the sound at a particular factor in time. A spectrum can permit you to see.

Spectrograms map out sound in a comparable way to a musical rating, only mapping frequency rather than musical notes. Seeing frequency energy allotted over the years in this manner allows us to genuinely distinguish each of the sound factors in a recording, and their harmonic shape.

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according to the above assertion, melting gold is simpler than boiling it.

Evaporation is the transformation of a liquid into its vapor when it occurs below the liquid's boiling point. The transition from a liquid into a gas is known as condensation. The rate of evaporating increases as the temperature rises.

The process through which a solution boils and transforms into a gas is known as vaporization. Although evaporation doesn't involve boiling, vaporization is frequently confused with evaporation. The boiling point of a liquid is the heat at which it begins to turn into a gas. Pure water reaches its boiling point at 100°C.

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Yes, the reaction between aqueous solutions of potassium nitrate and copper(ii) sulfate happens when they are combined giving products by a reaction called double displacement reaction.

What is double displacement reaction?

Double displacement reaction is also called as double displacement exchange. This happens when some parts of 2 ionic compounds which are reacting are exchanged between them, making 2 new compounds. The positive and negative ions swap their places between the reactants in this reaction.

The reaction between aqueous solutions of potassium nitrate and copper(ii) sulfate give 2 products that is copper nitrate and potassium sulfate. This reaction is known as double displacement reaction.

Balanced chemical equation:

2KNO3 + CuSO4 ----> Cu(NO3)2 + K2SO4

Therefore, the reaction between aqueous solutions of potassium nitrate and copper(ii) sulfate is possible and it gives products like copper nitrate and potassium sulfate making it a double displacement reaction.

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According to the given statement C₄H₆O is the empirical formula of this substance.

Empirical formulae are beneficial since figuring out the molecular formula can be immensely aided by knowing the relative amounts of each constituent in a molecule. It's crucial to have an n-value in order to figure out the precise figure of each atom within the molecule.

The smallest full numerical percentage of atoms present in a molecule serves as the actual formulation of a substance in chemistry. Hydrogen superoxide (SO) and disulfur -2 empirical formulae are two straightforward examples of this notion (S2O2).

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Two anti-bonding orbitals and six electrons in bonding orbitals make up the bond order of the given molecule, which is 2. In the orbital theory, the bonding orbital is used to describe interactions.

The formula for determining bond order is given below. 1/2 (electrons in bonding molecular orbitals - electrons in antibonding molecular orbitals) (electrons in bonding molecular orbitals - electrons in antibonding molecular orbitals) Bond length and strength are revealed by bond order. A shorter bond length is typically correlated with higher bond order. The fact that there are more bonds between the atoms explains this.

Half of the difference between the number of bonding and antibonding electrons is another definition of bond order in molecular orbital theory.

Bond order is 1/2. (electrons in bonding orbitals - electrons in anti-bonding orbitals.)

Bond order is 1/2. (6-2)

bond order is two.

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The amount of oxygen produced by the reaction of 6.54g of ammonium perchlorate is 2.228g.

The chemical reaction for this will be:

4NH4ClO4 → 5O2 + 6H2O + 2N2 + 4HCl

We know:

'6.54' grams is mass of ammonium perchlorate  and '117.49' g/mol is molar mass of ammonium perchlorate

Now, we  can calculate moles by:

Moles NH4ClO4 =  mass NH4ClO4 / molar mass NH4ClO4

Moles NH4ClO4 = 6.54 grams / 117.49 g/mol

this give 0.0557 moles of NH4ClO4

After this we will calculate the moles of O2 produced similarly:

For 4 moles of ammonium perchlorate consumed, 5 moles of O2 is produced, in addition to 6 moles of  H2O, 2 moles of  N2 and 4 moles of HCl.

For 0.0696 moles NH4ClO4; we get 5/4 * 0.0557 = 0.0696 moles of O2

And Finally we can calculate the mass of oxygen produced:

Mass of oxygen  = moles of O2 * molar mass of O2

Mass of oxygen = 0.0696 moles * 32 g/mol

Mass of oxygen  = 2.228 grams

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The frequency of light with a wavelength of 1.87 x 10-14 m = 1.657*10^-22 Hz

What is frequency of light ?

The frequency is the number of waves that go through a given place in space in a given amount of time, typically one second. It is measured in hertz, which stands for cycles (waves) per second. Color is the frequency of visible light, which spans from 430 trillion hertz for red to 750 trillion hertz for violet.

We must determine the frequency given the wavelength. Where, is the sign for frequency, c is the symbol for the speed of light, and is the symbol for wavelength, the equation that links frequency and wavelength is:

The wavelength is 1.87 x 10-14 m and the speed of light is 3*10^8 m/s

To compute the frequency, let's enter the values in the equation and run the calculations:

f = c/wavelength

f = 3*10^8/ 1.87*10^-14 = 1.657*10^-22 Hz

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The heat released after the reaction is -184.79 kJ

The chemical reaction between methane and fluorine is

[tex] CH_{4}[/tex] + 4[tex] F_{2}[/tex] -> [tex] CF_{4}[/tex] + 4HF, where reactants are methane and fluorine. The products are carbon tetrafluoride and hydrogen fluoride.

The limiting reactant is hydrogen fluoride. Number of moles = (0.440 × 4)/4, here 4 is the number of moles of hydrogen fluoride and fluorine

Performing multiplication and division

Number of moles = 0.440 moles of HF

Enthalpy of reaction = -1679.54 kJ

Heat released = (0.440 × -1679.54)/4

Performing multiplication and division to find the heat released

Heat released = -184.749 kJ

Thus, the heat released is -184.79 kJ

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60 ml of a 14.0 M NH₃ stock solution are needed to prepare 200 mL of a 4.20 M dilute NH₃ solution.

Using the formula given below ,

M₁ x V₁ = M₂ x V₂

M₁ = concentration of stock solution

V₁ = volume of stock solution (to be found out)

M₂ = concentration of diluted solution

V₂ = volume of diluted solution;

V₁ = (M₂ x V₂) / M₁

= (4.2 x 200) / 14

= 60ml

Hence , 60 ml of a 14.0 Mole NH₃ stock solution are needed to prepare 200 mL of a 4.20 M dilute NH₃ solution.

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2 Al&3irons with 2fe and 36copper

The number of moles of beryllium oxide BeO are 2.228 moles.

The chemical formula for beryllium oxide is given to be BeO.

The mass of the amount of beryllium oxide formed is 555.7 grams.

we are asked to find the number of moles,

The moles are given by the mass of the substance divided by the molar mass of the substance.

Mass = Mass formed/molar mass

Mass of BeO formed = 55.7 grams.

Molar mass of BeO = 25g/mol.

Putting values,

Moles of BeO = 55.7/25

Moles of BeO = 2.228 moles.

So, the number of moles of beryllium oxide formed are 2.228 moles.

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Complete question - the chemical formula for beryllium oxide is BeO. A chemist measured the amount of beryllium oxide produced during an experiment. she finds that 55.7 grams of beryllium oxide is produced. calculate the number of moles of beryllium oxide produced. be sure your answer has the correct number of significant digits.

Combustion of coal is the  largest source of anthropogenic carbon dioxide emission worldwide given by the carbon footprints.

What are carbon footprints?

Carbon footprints are the total amount of emissions of green house gases by a product, place or an event. The main of this is to take actions against the emission of greenhouse gases and reduce them. It is estimated that burning of 1 Kg coal can give about 2.42Kg of carbon dioxide.

Combustion of coal releases more carbon dioxide than burning petroleum products or natural gas in the whole worldwide. Carbon dioxide is the most important greenhouse gas contributing to the global warming. Coal is considered to be having the highest carbon footprints out of all the energy sources.

Therefore, coal combustion gives out the highest carbon footprint giving the highest carbon dioxide worldwide.

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Answer:

20

Explanation:

owls are 10 of anything 10x 2 =20

It seems as though the value of the owl is up to you though

Hopes this helps

There are 14 valence electrons assigned to the n atom.as it forms  NH4CL lewis structure.

Lewis structure can be explained the bonding pair from the lone pair electrons.it shows non bonding electrons.hydrogen atom form one covalent bond.cl is anionic monoatomic ligand. H is a diatomic anionic ligand. Nitrogen is the least electronegative atom goes at the center.Hydrogen atoms always go on the outside of lewis structure.

In this, N has 5 valence electron.Hydrogen has 1 and cl has 7 valence electron.that gives total 14 valence electrons.cl has 3 lone pairs and n has a lone pair..

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the rate at which the entropy of the two reservoirs changes is 0.00390837931 kw/k .

What is entropy ?

Entropy, a measure of a system's thermal energy per unit temperature not available for useful work. Work is obtained from molecular motion, the amount of entropy is a measure of the molecular disorder or randomness of a system. The concept of entropy gives us deep insight into the direction of spontaneous change in many everyday phenomena. Introduced in 1850 by German physicist Rudolf Clausius, it is the pinnacle of 19th-century physics.

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Barium chloride and water are created when barium hydroxide and hydrochloric acid combine.

what is ionic compound?

An ionic compound in chemistry is a chemical complex made up of ions kept together by electrostatic forces known as ionic bonding. Although the chemical is generally neutral, it does include positively charged ions known as cations and negatively charged ions known as anions. Simple ions like sodium (Na+) and chloride (Cl) in sodium chloride or polyatomic species like the ammonium (NH+ 4) and carbonate (CO2 3) ions in ammonium carbonate can be present in these compounds. Since each individual ion in an ionic compound typically has many nearest neighbours, they aren't thought of as being a part of molecules at all but rather as a continuous three-dimensional network. When solid, ionic chemicals often take the shape of crystals.

The balanced equation for this reaction is: 2HCl (aq) + Ba (OH)2 (aq) → BaCl2 (aq) +2H2 0 (1) If 4 moles of barium hydroxide react The reaction consumes moles of hydrochloric acid.

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A titration between sodium hydroxide (NaOH) and acetic acid (CH₃COOH) will have two equivalence points. The first equivalence point will be when the acid is completely neutralized, and the second will be when the base is completely neutralized.

The first equivalence point occurs when the moles of sodium hydroxide (NaOH) is equal to the moles of acetic acid(CH₃COOH). In the titration sodium hydroxide has neutralized all of the acetic acid. The second equivalence point occurs when the moles of sodium hydroxide is equal to the moles of water. The reason for two equivalence points is that acetic acid is a weak acid and water is a strong base.

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Answer:

Explanation:

1) Calcium = ?

→ Ca will constitute to form ionic bond.

2) Rubidium iodide = ?

→ Rubidium iodide will form ionic bond.

3) Nickel (IV) selenide = ?

→ Nickel (IV) selenide forms ionic bond.