How does polarising power relates to the stability of carbonates/nitrates?

Answer:

protons: 8

neutrons: 9

Explanation:

the atomic number tells you how many protons are in a element. The mass is the number of protons + neutrons.

17 - 8 = 9 neutrons

There are 8 protons and 9 neutrons in the nucleus of the oxygen atom.

The atomic number of an atom is the number of protons in atom of an element.

It can also be defined as the number of electrons in a neutral atom of an element.

The mass number is the number of protons and neutrons in the nucleus of an atom of an element.

The proton number of the oxygen atom is 8

The neutron number is 17 - 8 = 9

Therefore, in the nucleus of the oxygen atom, there are 8 protons and 9 neutrons.

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The statement that is true concerning the given compound is:

c. It should dissolve in water.

Certain chemical entities are associated with chemical compounds. These groups project specific properties onto compounds. These chemical groups are called functional groups. An example of such a functional group is COOH in carboxylic acids.

When a hydroxyl group is attached to a compound, the compound has the property of being soluble in water. The hydroxyl group is composed of hydrogen and oxygen, which makes the compound more soluble in water. Hence option c. The correct answer is that it dissolves in water.

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Complete question is:

A compound contains hydroxyl groups as its predominant functional group. Which of the following statements is true concerning this compound?

a. It won't form hydrogen bonds with water.

b. It is hydrophobic.

c. It should dissolve in water.

d. It lacks an asymmetric carbon, and it is probably a fat or lipid. e. It should dissolve in a nonpolar solvent.

Answer:

Progress made in Asia and the Middle East is clear, with nations such as China, Singapore and Malaysia all demonstrating increased adaptability. Much of Africa has also made progress since 1995, along with South American nations, including Brazil and Chile.

The entire energy of all internal molecular motion makes up an object's heat.The thermal energy or average heat of the molecules in a substance is measured by temperature.It is a measurement of the quantity of atoms times the energy that each atom possesses.

How do heat and temperature relate to one another?

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The condition that H₂ must be under to be in corresponding states with CO₂ is at a temperature of approximately 43.6 K and a pressure of approximately 1.77 bar.

To find the condition when H₂ is in a corresponding state to CO₂ at 400 K and 10.0 bar, we'll use the reduced temperatures and pressures. Reduced temperature (Tr) and reduced pressure (Pr) can be calculated using the critical temperature (Tc) and critical pressure (Pc) with the following formulas:

Tr = T / Tc
Pr = P / Pc

For CO₂, Tr_CO₂ = 400 K / 304.2 K ≈ 1.315 and Pr_CO₂ = 10.0 bar / 73.7 bar ≈ 0.136.

Now, we need to find the conditions for H₂, where Tr_H₂ = Tr_CO₂ and Pr_H₂ = Pr_CO₂:

Tr_H₂ = T_H₂ / 33.2 K = 1.315 => T_H₂ ≈ 43.6 K
Pr_H₂ = P_H₂ / 13.0 bar = 0.136 => P_H₂ ≈ 1.77 bar

So, H₂ is in a state corresponding to CO₂ at 400 K and 10.0 bar when it is at a temperature of approximately 43.6 K and a pressure of approximately 1.77 bar.

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Calcium bromide give a compound consisting of two bromine atoms and one calcium atom.

What is atom?

An atom is a particle of the  matter that uniquely defined as a chemical element. An atom is the  consists of a central nucleus that is the  surrounded by one or more negatively charged of  electrons. The nucleus is the  positively charged and the  contains one or more of  relatively heavy particles known as protons and neutrons. Sol-Atomic radius of an atom is defined as the total distance from the nucleus to the outermost shell of the atom. Sodium and magnesium are located in the same era, with magnesium to the right of sodium. They both have the same number of primary shells.

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The hybridization change that occurs for phosphorus in the reaction PCl3 + Cl2 → PCl5 is sp3 → sp3d.The hybridization change that occurs for phosphorus in the reaction PCl3 + Cl2 → PCl5 is sp3 → sp3d.PCl3 + Cl2 → PCl5The above reaction is a balanced chemical equation.

The phosphorus (P) atom in PCl3 has a hybridization of sp3, whereas the Cl2 molecule has a hybridization of sp2. During the formation of PCl5, there is a hybridization change in the phosphorus atom from sp3 to sp3d.A change in the hybridization of an atom occurs when it is involved in a chemical reaction. The changes in hybridization occur due to the difference in electronegativity of the atoms in the reactants or due to the bond formation.

For instance, in the reaction PCl3 + Cl2 → PCl5, the reaction occurs due to the formation of a covalent bond between the P atom in PCl3 and Cl atom in Cl2. This causes the electrons in the 3p subshell of the P atom to undergo excitation, resulting in the hybridization change from sp3 to sp3d.Hence, the correct answer is sp3 → sp3d.

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The solutions of calcium hydroxide are filtered before titrating to remove any impurities or solid particles that could interfere with the accuracy of the titration results.

What can impurities cause to the titration ?

These impurities could react with the titrant, affecting the amount of titrant needed to reach the endpoint of the titration.

How filtration is helpful in titration of calcium hydroxide ?

Filtering removes any undissolved solid particles or impurities from the solution, which could interfere with the endpoint determination or affect the overall results of the titration. Filtering the solution ensures that only pure calcium hydroxide is present in the solution, allowing for more precise and accurate titration results.

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Answer: T = 9.74°C

Explanation: An ideal gas in a quasi-static adiabatic process follows the equation: \(pV^{\gamma} = constant\).

So:

\(1.10^{1.67} = constant\)

constant = 46.7735

Adiabatic conditions can be written as:

\(TV^{\gamma-1}=constant\)

Then, new temperature is

\(T.(10.4)^{1.67-1}=46.7735\)

\(T.(10.4)^{0.67}=46.7735\)

\(T = \frac{46.7735}{4.802}\)

T = 9.74°C

The new temperature is 9.74°C.

The polyatomic ion that carries a positive charge is the ammonium ion ( NH 4 + ) .

In general , Polyatomic ions are having important formulas, names, and charges that should be memorized. During formation of ammonium ion, these nitrogen atom helps to gains a positive charge when they loose lone pair of electrons. When ammonium ion carries a positive charge, then it is  known as ammonium cation.

Hence, when special type of ionic compound is embellished by ammonium nitrate (NH4NO3), that contains two polyatomic ions, NH4+ and NO3−. So the polyatomic ion is a charged and composed of several atoms bound together.

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Answer:

None, unless D has a typo.

Arrange aluminum, nitrogen, phosphorus, and indium in order of increasing electronegativity.

A) Al < In < N < P

B) N < Al < In < P

C) In < P < Al < N

D) In < Al < P < N

Explanation:

Nitrogen 3.04

Phosphorus 2.19

Indium 1.78

Aluminium 1.61

https://ptable.com/#Properties/Electronegativity

Answer:

hex-3-ene

remember the least number rule and since the double bond lies at 3rd C-atom from either ways, the compound is named hex (six carbon atoms) -3(position of double bond)-ene (primary suffix for unsaturated organic compound where any two carbons have double bond). hex-3-ene.

if you have any doubt, please feel free to ask :-))

3.11 × 10⁻⁶ M is the molar dissolvability for Zn(OH)₂ in unadulterated water.

Option C is correct.

The molar solubility of a solute is the amount that can dissolve in one liter of solution without becoming saturated. This sum can be determined utilizing the stoichiometry and the item solvency consistent, or Ksp.

Molarity and dissolvability are two free sub-atomic characteristics that are utilized to describe two distinct parts of a substance, and the unit for molar solvency is mol/L. A particle's ability to deteriorate in a dissolvable is known as dissolvability. A substance's fixation in an answer, by and large given in moles per liter, is known as its molarity.

Zn(OH)₂ ⇔Zn₂+ + 2OH-

Ksp ⇒ [Zn²⁺][OH-]²

If S is solubility,

Ksp = S × (2S)² i.e. 4S³

S will be cube root of Ksp/4

S ⇒ 3.11 × 10⁻⁶ M

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Answer:

Significant Figures in 200.0

Result 200.0

Sig Figs 4 (200.0)

Decimals 1 (200.0)

Scientific Notation 2.000 × 102

E-Notation 2.000e+2

there is not have enough magnesium to react with all the titanium tetrachloride. If this point is not clear from the mole ratio, calculate the number of moles of one reactant that is required for complete reaction of the other reactant. For example, there are 8.23 mol of Mg, so (8.23 ÷ 2) = 4.12 mol of TiCl4 are required for complete reaction. Because there are 5.272 mol of TiCl4, titanium tetrachloride is present in excess. Conversely, 5.272 mol of TiCl4 requires 2 × 5.272 = 10.54 mol of Mg, but there are only 8.23 mol. Therefore, magnesium is the limiting reactant.

Compare the protons in 188^Re and 188^W.

To compare the protons in 188^Re and 188^W, we need to look at their atomic numbers, which represent the number of protons in each element. Rhenium (Re) has an atomic number of 75, and Tungsten (W) has an atomic number of 74.

Using this information, we can determine that:
A. 188^Re does not have the same number of protons as 188^W.
B. 188^W does not have more protons than 188^Re.
C. 188^Re has more protons than 188^W.

Your answer: C. 188^Re has more protons than 188^W.

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The statement "X-ray crystallography can only be used for structure determination if the wavelength of the X-ray photon (λ) is on the order of the lattice constant (d)" is false because X-ray crystallography is used to determine the atomic arrangement of crystals, and it does not depend on the wavelength of the X-ray photon.

X-ray crystallography is a technique used to determine the structure of crystals by shining X-rays through the crystal. The diffraction pattern generated by the X-rays is then analyzed to determine the atomic arrangement of the crystal.                         Therefore, X-ray crystallography is used to determine the atomic arrangement of crystals, and it does not depend on the wavelength of the X-ray photon. Rather, the resolution of the structure determination is affected by the wavelength of the X-ray radiation.

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gas with the smallest amount of molecular weight will effuse the quickest

In the context of atomic orbital (AO) wavefunctions, the terms "radial node" and "nodal plane" refer to different aspects of the wavefunction's behavior.

A radial node is a region in the AO wavefunction where the probability of finding an electron is zero along the radial direction. In other words, it represents a spherical shell where the electron is unlikely to be found. The number of radial nodes is determined by the principal quantum number (n) of the orbital. For example, the 2s orbital has one radial node, while the 2p orbital has no radial nodes.

On the other hand, a nodal plane is a flat plane within the AO wavefunction where the probability of finding an electron is zero along a particular direction. It represents a surface that divides the orbital into two regions of opposite phases. The number of nodal planes is determined by the angular quantum numbers (l and m) of the orbital. For example, the 2s orbital has no nodal planes, while the 2p orbital has one nodal plane (the xz or yz plane).

Radial nodes arise from the radial part of the wavefunction because they depend on the distance from the nucleus. The radial part determines the distribution of the electron density as a function of distance, and the nodes correspond to regions where the density drops to zero.

On the other hand, nodal planes arise from the angular part of the wavefunction because they depend on the orientation and shape of the orbital. The angular part describes the angular distribution of the electron density around the nucleus, and the nodal planes correspond to regions where the phase of the wavefunction changes sign.

In summary, radial nodes are related to the distance from the nucleus and arise from the radial part of the wavefunction, while nodal planes are related to the orientation and shape of the orbital and arise from the angular part of the wavefunction. The 2s orbital has one radial node and no nodal planes, while the 2p orbital has no radial nodes and one nodal plane.

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Density = Mass/Volume but it can also be rearranged to:

Volume = Mass/Density

Given in the question:

Mass - 318.97 g

Density - 19.3 g/cm3

Calculation

Density = Mass/Volume

= 318.97/19.3

= 16.52 \(cm^{3}\)

Therefore, the volume of the gold is 16.52 \(cm^{3}\)

The moles of gas that I have If I have an unknown quantity of gas at a pressure of 1.2 atm, a volume of 31 liters, and a temperature of 87 0 C is 1.26 moles.

To determine the mol of gas, we can use Mendeleev-equation Clapeyron's:

pV = nRT

Where:

n is the number of moles = ?

p is pressure = 1.2 atm

V is volume = 31 liters

T is temperature = 87°C ⇒ (273+87) = 360 K

R is the constant of all gases = 0.082 L.atm/mol.K

So, we can define the n number as:

n = pV/(RT)

n = (1.2) (31) / (0.082) (360) =

1.26 moles

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NMR spectroscopy or nuclear magnetic resonance spectroscopy is very important in the determination of the organic structures. This technique relies on the interaction of a particular nucleus with a magnetic field followed by the absorption of energy of a specific frequency, depending on the chemical environment of the nucleus.

NMR spectroscopy is the use of NMR phenomena to study the physical, chemical, and biological properties of matter. Chemists use it to determine the identity and structure of molecules. Physicians use magnetic resonance imaging (MRI), a multidimensional NMR imaging technique, for diagnostic purposes.

NMR spectroscopy is an analytical chemistry technique used in quality control to determine the content and purity of organic compounds and the molecular structure of compounds. This technique includes nuclear detection.

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Given in question;

- Wavelength of visible light (λ)              

    λ = 486 nm = 486 × 10^-9 mmm

- Number of photons is (N) = 1 Mole

          N = (1mole × 6.022 × 10^23)/1mole

         N = 6.022 × 10^23 Photons

Expression to calculate Energy of bhoton

          (E = Nhc/λ)------------{where;h is Plack constant = 6.022 × 10^2}

                                          {           ;c is speed of light = 3 × 10^8 }

Thus ;

E = (6.022 × 10^23) × (6.63 × 10^-34)Js× (3 × 10^8)m/s / (486 × 10^-9)m

E =2.461 × 10^5 J

Hense ,Energy of one mole of photons associated with visible light having a wavelength of 486 nm is 2.461 × 10^5 Joule

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In the balanced equation for the reaction\(MnO_{4}^-(aq) + Fe_{2} ^+(aq) -- > Mn_{2}^+(aq) + Fe_{3}^+(aq)\) in basic aqueous solution, the coefficient for OH−(aq) is 4.

To balance the given equation in basic aqueous solution, we need to ensure that the number of atoms of each element is equal on both sides of the equation and that the overall charge is balanced. Here's how the equation is balanced:

First, we balance the atoms other than hydrogen and oxygen. The equation becomes:

\(MnO_{4}^-(aq) + 5Fe_{2} ^+(aq)+8H_{2}O(l) -- > Mn_{2}^+(aq) +5 Fe_{3}^+(aq)\)

Next, we balance the oxygen atoms by adding water molecules (H2O):

\(MnO_{4}^-(aq) + 5Fe_{2} ^+(aq)+8H_{2}O(l) -- > Mn_{2}^+(aq) +5 Fe_{3}^+(aq)+4H_{2}O(l)\)

Now, we balance the hydrogen atoms by adding OH−(aq) ions:

\(MnO_{4}^-(aq) + 5Fe_{2} ^+(aq)+8H_{2}O(l) -- > Mn_{2}^+(aq) +5 Fe_{3}^+(aq)+4H_{2}O(l)+4OH^-(aq)\)

Therefore, in the balanced equation, the coefficient for OH−(aq) is 4. This balances the hydrogen atoms and ensures that the equation is balanced in basic aqueous solution.

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Answer:

The symbol for an atom can be written to show its mass number at the top, and its atomic number at the bottom. To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = atomic number.

Answer:

A.

Explanation:

Answer:

Portable coolers stay cold with the magic of insulation and ice. The insulation, which is usually made from foam or plastic, lines the inside of your cooler, slowing down the circulation of warm air.