What is PhS(O)CH2Ph?

Z=35

Electronic configuration:-

\(\\ \sf\longmapsto 1s^22s^22p^63s^23p^64s^23d^104p^5\)

Answer:

attached here is the diagram of the solution

Explanation:

To determine the specific volume of a sample of dry air, we can use the ideal gas law. The ideal gas law equation is:

PV = nRT

Where:

P = Pressure (in Pascal)

V = Volume (in cubic meters)

n = Number of moles of the gas

R = Ideal gas constant (8.314 J/(mol·K))

T = Temperature (in Kelvin)

To convert the given pressure and temperature to the SI units (Pascal and Kelvin), we have:

Pressure = 50 kPa = 50,000 Pa

Temperature = 263 K

Now, we can rearrange the ideal gas law equation to solve for volume (V):

V = (nRT) / P

Since we're dealing with a specific volume, we need to determine the volume per unit mass. Therefore, we'll consider one kilogram (kg) of dry air.

To calculate the number of moles (n) of air in one kilogram, we need to know the molar mass of dry air. The molar mass of dry air can be approximated as 28.97 g/mol.

1 kg of air = 1000 g

Number of moles (n) = (mass of air) / (molar mass of air)

n = (1000 g) / (28.97 g/mol)

Now we can substitute the values into the equation:

V = [(1000 g) / (28.97 g/mol)] * (8.314 J/(mol·K)) * (263 K) / (50,000 Pa)

V/n ≈ 0.0434 m³/mol is the specific volume of the dry air sample.

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Answer:

The correct answer is physical properties and/or phase properties.

Explanation:

Chemical properties can alter the substance (if you burn wood, it becomes ash and is no longer wood).

Reactive properties are also chemically changing the substance.

Phase properties are where the element can be in solid, liquid, or gas form so these could also be an answer.

Answer:

The answer is A Tuberculosis

Isotopes undergo radioactive decay because thermodynamics generally governs the situation. Every atom strives to have the greatest degree of stability. When the number of protons and neutrons in the atomic nucleus is out of balance, instability results in radioactive decay. In essence, the nucleus contains too much energy to keep all the nucleons together.

Radioactive decay a the spontaneous process through which an unstable atomic nucleus breaks into smaller, more stable fragments.

Three Types of Radioactive Decay:

Alpha Decay:

       When an alpha particle basically a helium nucleus with two protons and two neutrons is ejected, the parent's atomic number and mass number are reduced by two and four, respectively.

Beta Decay:

      A stream of electrons from the parent, known as beta particles, is released during beta decay, and a neutron in the nucleus is changed into a proton. The new nucleus has the same mass number, but an additional atomic number of one.

Gamma Decay:

        The atomic nucleus releases extra energy during gamma decay in the form of high-energy photons (electromagnetic radiation). The resultant nucleus takes on a more stable energy state while maintaining the same atomic number and mass number.

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Answer:

Iron(III) chloride

Explanation:

Explanation:

Given:

The complete equation is:

The balanced ionic equation for the reaction is:

The BaSO₄ is an insoluble solid, so it will not dissociate into ions.

The spectator ions in the reaction are ions that are present at both the reactant side and the product side.

Hence, the spectator ions are:

Therefore, the balanced net ionic equation is:

Answer:

ns 2 np 5

Explanation:

They are one electron short of having the full outer s and p sublevel, which makes them very reactive.

The one that would represent a halogen is (Ne) 3s^2 3p^5. The correct option is C.

The halogens are a group of five or six chemically related elements in the periodic table: fluorine, chlorine, bromine, iodine (I), and astatine.

The element 117, which was created artificially, could also be a halogen. This group is known as group 17 in modern IUPAC nomenclature.

The periodic table contains a group of elements known as halogens. They are located to the left of the noble gases and to the right of the other nonmetals.

The halogen group elements have seven electrons in their outer shells, giving them distinct properties.

Halogens have the general electronic configuration ns2 np5. They have seven valence electrons at all times.

They have one fewer electron than having filled outer s and p orbitals. As a result, they are extremely reactive.

Thus, the correct option is C.

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Your question seems incomplete, the missing options are:

(He)2s^2 2p^3

(Ar) 4s^1

(Ne) 3s^2

(Ne) 3s^2 3p^5

(Ar) 3d^5 4s^2

Answer:sample B is non metal

Explanation:

The iodine molecule's i-i bond can be broken by light at a maximum wavelength of =782.39 nm.

A waveform signal's wavelength is defined as the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically expressed in meters (m), centimeters (cm), or millimeters (mm) (mm).

Light with a specific wavelength has the following energy:

E = hc/λ

E = energy of light

h = planck's constant = 6.626*10⁻³⁴J-s

c = speed of light = 3*10⁸ m/s

We are given bond energy of one mole i–i , but we are required to dissociate one molecule of bromine monochloride bond.

Bond energy of one mole i–i = 153kJ/mol ( 1 mol = 6.022*10²³ )

Bond energy of one molecule of i–i = 153/6.022*10²³ kJ/molecule (1kJ = 1000J)

E = (153)*(1000)/(6.022*10²³ )J/molecule (Multiplied 1000 to change kJ to J)

E = hc/λ

153*(1000)/6.022*10²³ = 6.626*10⁻³⁴*3*10⁸×λ

λ = 782.39nm

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Answer:

\(\% diss = 50\%\)

Explanation:

Hello there!

In this case, when considering weak acids which have an associated percent dissociation, we first need to set up the ionization reaction and the equilibrium expression:

\(HA\rightleftharpoons H^++A^-\\\\Ka=\frac{[H^+][A^-]}{[HA]}\)

Now, by introducing x as the reaction extent which also represents the concentration of both H+ and A-, we have:

\(Ka=\frac{x^2}{[HA]_0-x} =10^{-4.74}=1.82x10^{-5}\)

Thus, it is possible to find x given the pH as shown below:

\(x=10^{-pH}=10^{-4.74}=1.82x10^{-5}M\)

So that we can calculate the initial concentration of the acid:

\(\frac{(1.82x10^{-5})^2}{[HA]_0-1.82x10^{-5}} =1.82x10^{-5}\\\\\frac{1.82x10^{-5}}{[HA]_0-1.82x10^{-5}} =1\\\\\)

\([HA]_0=3.64x10^{-5}M\)

Therefore, the percent dissociation turns out to be:

\(\% diss=\frac{x}{[HA]_0}*100\% \\\\\% diss=\frac{1.82x10^{-5}M}{3.64x10^{-5}M}*100\% \\\\\% diss = 50\%\)

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Old and inefficient mining smokestacks contaminate the soil around abandoned mine sites.

A mine is an area from which natural resources are extracted such as coal, metals, etc. A mine is known to be the source of many heavy metals as well as acid.

As such the statement that does not represent the impact of mining services is that; "Old and inefficient mining smokestacks contaminate the soil around abandoned mine sites".

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Answer:Van der Waals forces are responsible for certain cases of pressure broadening (van der Waals broadening) of spectral lines and the formation of van der Waals molecules. ... The main characteristics of van der Waals forces are: They are weaker than normal covalent and ionic bonds.

Explanation:

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Answer:

They are the primary intermolecular attractive forces that act between nonpolar molecules

Explanation:

I took the test

The balanced symbol equation for the Haber process, which is the industrial method for producing ammonia, is N2 + 3H2 → 2NH3

A. The Haber process is the industrial method for producing ammonia, and the balanced equation for the reaction is:

N2 + 3H2 → 2NH3

The atom economy for a product is the percentage of the total mass of reactants that becomes the desired product. For ammonia, the atom economy can be calculated as follows:

Molar mass of NH3 = 14.01 + 3(1.01) = 17.04 g/mol

Atom economy of NH3 = (2 mol NH3 x 17.04 g/mol) / [(1 mol N2 x 28.02 g/mol) + (3 mol H2 x 2.02 g/mol)] x 100% = 34.0%

B. To calculate the theoretical yield of ammonia, we need to use the given mass of nitrogen and the stoichiometry of the balanced equation. The molar mass of nitrogen is 28.02 g/mol, so 27.3 g of nitrogen is equal to:

27.3 g / 28.02 g/mol = 0.974 mol N2

According to the balanced equation, 1 mole of N2 reacts with 3 moles of H2 to produce 2 moles of NH3. Therefore, the theoretical yield of ammonia is:

Theoretical yield of NH3 = (0.974 mol N2) x (2 mol NH3 / 1 mol N2) x (17.04 g/mol NH3) = 33.1 g NH3

C. The percentage yield of the reaction can be calculated by dividing the actual yield of ammonia by the theoretical yield, and then multiplying by 100%. The actual yield of ammonia is given as 29.9 g:

Percentage yield of NH3 = (29.9 g NH3 / 33.1 g NH3) x 100% = 90.4%

D. The percentage conversion of hydrogen can be calculated by dividing the mass of hydrogen used in the reaction by the mass of hydrogen that would have been used if all of it had been consumed in the reaction. The mass of hydrogen used is 10.4 g, and the mass of hydrogen that would have been used if all of it had been consumed in the reaction is:

1( mol H2 x 2.02 g/mol) x (0.974 mol N2 / 1 mol N2) = 1.98 g H2

Therefore, the percentage conversion of hydrogen is:

Percentage conversion of H2 = (10.4 g H2 / 1.98 g H2) x 100% = 525% (This result is not possible, as the percentage conversion cannot be greater than 100%. It is likely that there was an error in the calculation or in the data provided.)

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Answer:

Each isotope of oxygen contains 8 protons, but differs in the number of neutrons. An isotope number is a shorthand representation of its mass. Because protons and neutrons are roughly equal in mass, an isotope's number is equal to the sum of its protons and neutrons.

Explanation:

Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.

If the concentration of the solutions are doubled then the cell EMF is also doubled.

According to the Nernst equation, the concentration of the species determines the cell EMF as we can see form the formula;

Ecell = E°cell - 0.0592/nlogQ.

Hence, if the concentration of the solutions are doubled then the cell EMF is also doubled.

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Answer:

A.hydrogen

Explanation:

A normal hydrogen (H) atom does not have any neutrons in its tiny nucleus

Answer:

co2

Explanation:

it is an ionic compound

When a skeletal muscle lengthens, the stretch reflex is activated, causing the muscle to contract and resist excessive stretching, thus preventing injury.



When a skeletal muscle lengthens, it activates the stretch reflex, a protective mechanism that resists excessive stretching and potential injury. The muscle spindles within the muscle fibers detect the stretch and send signals to the spinal cord. In response, the spinal cord triggers the muscle to contract, preventing further stretching. This reflexive contraction helps maintain muscle integrity and prevents strains or tears.



However, it's important to remember that the stretch reflex has its limits, and extreme stretching can still cause muscle damage. Proper warm-up, gradual progression of exercise, and employing appropriate stretching techniques are essential for optimal muscle protection and injury prevention.



In summary,   When a skeletal muscle lengthens, the stretch reflex is activated, causing the muscle to contract and resist excessive stretching, thus preventing injury.

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The main function of using a virtual spectrometer in order to analyze astronomical bodies in space is to find the chemical composition of planets and stars.

This refers to the instrument that is used to observe the color separation of light in a controlled experiment.

Hence, we can see that another reason for the use of a virtual spectrometer to make an analysis of astronomical bodies is to indicate the speed and direction of a star or galaxy as it spreads incoming beams of light into different spectrums.

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Answer:

D)

Explanation:

CH4 + 2O2 = CO2 + 2H2O

1 (L CO2)= 32.5(L CO2)

1 (CH4) = 32.5 (L CH4)

Answer: The mass of acetic acid that will be consumed is 1.512 g.

Explanation:

Molarity is defined as the moles of solute present per liter of the solution.

The formula used to calculate the molarity of the solution is:

\(\text{Molarity}=\frac{\text{Number of moles of solute}}{\text{Volume of solution (in L)}}\)

                       OR

\(\text{Molarity}=\frac{\text{Given mass of solute }\times 1000}{\text{Molar mass of solute }\times \text{Volume of solution (in mL)}}\)          ......(1)

Given values:

Molarity of acetic acid = 0.84 M

Volume of solution = 30 mL

Molar mass of acetic acid = 60 g/mol

Plugging values in equation 1:

\(0.84=\frac{\text{Mass of acetic acid }\times 1000}{60 \times 30}\\\\\text{Mass of acetic acid}=\frac{0.84 \times 60\times 30}{1000}\\\\\text{Mass of acetic acid}=1.512 g\)

Hence, the mass of acetic acid that will be consumed is 1.512 g.

The given molecule has only 1 rhed – region of high electron density because of presence of one triple bond.

An electron density zone might be either bonding or non-bonding. Electrons in a covalent bond between two atoms are counted as one region, whether the link is single, double, or triple (or anything in between). The amount of lone pairs on the core atom is used to count non-bonding areas.

Double and triple bonds qualify as one high electron density region. A single unpaired electron counts as one high electron density region. One can utilize any of the resonance structures for molecules or ions that have resonance structures.

A high electron density atom or group indicates that some component of the molecular structure (such as resonance or inductive effects) is transferring negative charge towards this location in the molecule.

In the given molecule, A – B ≡ C

Only one triple bond is there and no lone pairs of electrons. Hence, only 1 rhed (region of high electron density) is present within the molecule.

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To calculate the equivalent weight of 4-toluic acid (CH3C6H4COOH), you first need to find its molecular weight. The molecular weight is the sum of the atomic weights of all the atoms in the molecule.

For 4-toluic acid:
Carbon (C) = 8 atoms × 12.01 g/mol = 96.08 g/mol
Hydrogen (H) = 8 atoms × 1.01 g/mol = 8.08 g/mol
Oxygen (O) = 2 atoms × 16.00 g/mol = 32.00 g/mol

Now, add the weights together:
96.08 g/mol + 8.08 g/mol + 32.00 g/mol = 136.16 g/mol

The equivalent weight is the molecular weight divided by the number of replaceable hydrogen atoms in the acid, which in the case of 4-toluic acid is 1 (from the -COOH group):

Equivalent weight = 136.16 g/mol / 1 = 136.16 g/mol

So, the equivalent weight of 4-toluic acid is 136.16 g/mol.

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Answer:

Tomar 82 mL de solución concentrada y agregar agua hasta un volumen final de 1.0 L.

Explanation:

Tenemos una solución concentrada de hipoclorito de sodio, cuya concentración es 6.1%, por lo tanto:

Cc = 6.1 %

Y debemos hacer una dilucion para obtener una solucion diluida con:

Cd = 0.5%

Vd = 1.0 L

Por lo tanto, podemos usar la siguiente fórmula para calcular el volumen a tomar de solucion concentrada (Vc):

Cc x Vc = Cd x Vd

⇒ Vc = (Cd x Vd)/Cc = (0.5% x 1.0 L)/6.1% = 0.082 L

0.082 L x 1000 mL/1 L = 82 mL

Por lo tanto, para preparar la solución debemos tomar 82 mL de solucion concentrada de hipoclorito de sodio 6.1% y agregar agua hasta un volumen final de 1.0 L.

The least likely element combination would be hydrogen (H) and sodium (Na) since their ionization energies differ significantly.

To determine the least likely element combination, we need to consider the ionization energies and their relative values. The element combination that is least likely would involve elements with similar or close ionization energies.

Comparing the ionization energies:

1,312 kJ/mol (H) < 1,402 kJ/mol (N) < 1,314 kJ/mol (O) < 496 kJ/mol (Na)

Based on these values, the least likely element combination would be hydrogen (H) and sodium (Na) since their ionization energies differ significantly.

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Answer:

deflection,Coriolis effect

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