Of the 4 compounds above, v has the smallest HOMO-LUMO energy gap and therefore would absorb the wavelength of light.

Electron configuration of Cu - [Ar] 3d¹⁰ 4s¹

Electron configuration of F - [He] 2s2 2p5

Electron configuration of K - [Ar] 4s¹

We have to note that the electronic configuration of the atom has to do with the way that electrons are arranged in the orbitals of the atom. We know that the electrons are arranged in orbitals and that the orbits as well as the orbitals are found to be at various energy levels.

The quantum numbers has to do with the numbers that can help us to describe the position of the electron that is present in the atom.

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The question is incomplete, the complete question is;

Each sentence describes potential and kinetic energy at various locations on a slide. Complete each statement by selecting the position of the object on the slide.

An object at position has all kinetic energy. A B or C

An object at position has all potential energy. A B or C

An object at position has about half potential energy and half kinetic energy. A B or C

Answer:

An object at position C has all kinetic energy.

An object at position A has all potential energy.

An object at position B has about half potential energy and half kinetic energy.

Explanation:

Lets take a good look at the image.

At position A, the object is stationary and we know that the energy possessed by an an object by virtue of its position is known as potential energy. Hence at A, the energy possessed by the body is all potential.

At position B, the total mechanical energy of the object becomes potential energy + kinetic energy as the object is now in motion.

At position C, the object is still in motion and the energy is all kinetic.

Answer:

C

A

B

Explanation:

Answer:

30.26 grams of N₂O₃

Explanation:

Divide by Avogadro's number. This leaves you with the number of moles. Then, multiply by the molar mass of N₂O₃

Answer:

\(0.30molNH_3\)

Explanation:

Hello there!

In this case, since the reaction for the formation of ammonia is:

\(3H_2+N_2\rightarrow 2NH_3\)

We can evidence the 1:2 mole ratio of nitrogen gas to ammonia; therefore, the appropriate stoichiometric setup for the calculation of the moles of the latter turns out to be:

\(0.15molN_2*\frac{2molNH_3}{1molN_2}\)

And the result is:

\(0.30molNH_3\)

Best regards!

i think the answer is A and D

The biodiversity of the reef depends upon the location and corals die in the muddy water.

Coral reef:

These are the ecosystem of sallow water in the oceans. They made by reef building corals. It is one of the most diverse ecosystem.

Therefore, the biodiversity of the reef depends upon the location and corals die in the muddy water.

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Answer:

The hydronium ion concentration increases to 100 times the original concentration

Explanation:

The pH of a solution is defined as the negative logarithm of the hydrogen or hydronium ion concentration of that solution. It is given by the expression below:

pH = -log[H₃O⁺] = log[H₃O⁺]⁻¹

Assuming the solution was at neutral with original pH = 7;

The new pH of the solution will be = 7 - 2 = 5

At pH = 7;

log[H₃O⁺]⁻¹ = 7

[H₃O⁺]⁻¹ = 10⁷

[H₃O⁺] = 10⁻⁷

At pH = 5

log[H₃O⁺]⁻¹ = 5

[H₃O⁺]⁻¹ = 10⁵

[H₃O⁺] = 10⁻⁵

10⁻⁵ = 10⁻⁷ * 10²

But 10² = 100

Therefore, the hydronium ion concentration increases to 100 times the original concentration

Answer:

B

Explanation:

On Edge

Answer: Yes, because it’s between 8 and 10.

Explanation:

Answer:

Volume of 1 mole of a gas at STP =22.4L

Volume of 15 mole of a gas at STP =22.4×15=336L

Molecular weight of benzene =78g

No. of moles of benzene in 39g of benzene =

78

39

=0.5 mole

From the given reaction,

Volume of oxygen required to burn 2 mole of benzene =336L.

Therefore,

Volume of oxygen required to burn 0.5 mole of benzene =

2

336

×0.5=84L

Hence 84 litres of O

2

at STP are needed to complete the combustion of 39g of liquid benzene.

Traits for larger animals with big horns will be selected.

Answer:

The d-block metals are 10 columns wide due to the nature of the d-electron orbital subshell, which can hold up to 10 electrons in total, 2 per orbital.

The sequence of amino acid residues in a protein is considered primary structure and is always read from the N-terminal end of protein.

The food we eat chiefly consists of three nutrients namely carbohydrates, proteins and fats.

Proteins are the most abundant among the bio molecules present in the living organisms.

The word protein is derived from Greek word, “proteios” which means primary or of prime importance.

The proteins are the polymers of amino acids.

The structure of amino acid consists of a carbon atom surrounded by four functional groups i.e, Carboxyl(COOH) group, the Amino(NH2) group, hydrogen(H) and an alkyl group(R).

In a protein, amino acids are linked to each other by peptide bonds which are formed between the COOH group of one amino acid and the NH2 group of another amino acid, as shown in the adjoining image.

In primary structure, the amino acids are joined to each other in a linear manner without any branching, as shown in the given diagram.

Hence, the sequence of amino acid residues in a protein is considered primary structure and is always read from the N-terminal end of protein.

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Answer:

The substance is in a liquid phase.

Explanation:

The shape of a solid doesn't rely on the container it's in (think of shoes in a shoe box, the shoes maintain their shape).

The shape of a liquid can be changed depending on its container (think of water in a bowl vs. water in a bottle). Regardless of its shape, it maintains the same volume; that is, the amount of water doesn't change.

Gases don't have shapes, so that cannot be the answer either.

Answer:

3rd or 4th answer is correct

OPTION B is the correct answer

Purified water when growing nanoparticles in solution must be used so that The number of ions in solution must be carefully controlled

A particle that is smaller than 100 nm in size is referred to as a nanoparticle. These kinds of particles have many uses, particularly in the materials sector. Because the presence of ions in solution might alter the characteristics of the nanoparticles and the stability of the solution, purified water is frequently utilised while developing nanoparticles in solution.

To guarantee constant and repeatable development of nanoparticles, the number of ions in the solution must be carefully regulated. Ions in a solution can alter a nanoparticle's surface charge, which in turn can alter its stability and behaviour. There are several ways to manage ions in a solution, including utilising filtered water, altering the solution's pH, and employing salts to regulate the ionic strength of the solution.

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The group number of the given atoms is given below as follows:

Groups are the vertical columns in the periodic table that classify elements according to their related chemical characteristics and electron configurations.

There are 18 groups in the periodic table, numbered from 1 to 18. Families are another name for these social units.

In addition to having unique names or designations depending on the reactivity or components they include, the groups of elements are identified by numbers.

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Answer:

A . 6.3 In a healthy pond, the temperature is 16°C (61°F). What is the most likely pH of this pond

In a healthy pond, the temperature is 16°C (61°F). 6.3 is the most likely pH of this pond.

A measure of the acidity or basicity of a substance or solution. The pH scale ranges from 0 to 14. A pH value of 7 is neutral on this scale, indicating that it is neither acidic nor basic.

A pH value less than 7 indicates that it is more acidic, while a pH value greater than 7 indicates that it is more basic.

"Potential of Hydrogen" is the full form of pH. The negative logarithm of H+ ion concentration is known as pH. As a result, the meaning of the name pH is explained as hydrogen strength or power.

Thus, In a healthy pond, the temperature is 16°C (61°F). 6.3 is the most likely pH of this pond, so the pond is more acidic in nature.

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Because the base is more potent compared to the acid HF in this situation, the salt solution will be basic. The salt HF is going to generate an acidic solution.

Adding a strong base to a weak acid results in a moderately basic solution. The conjugate base containing the weak acid or the conjugate acid containing the strong base are created when the solution containing a weak acid combines with an identical solutions of a strong base.

Depending on how each salt behaves in water, the solution it produces may be acidic, basic, and neutral. Because the base is more potent compared to the acid HF in this situation, the salt solution will be basic. The salt HF is going to generate an acidic solution.

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Ernest Rutherford gave the atomic model based on the centrally located mass of the atom. The α particles passed through the foil as an atom has empty spaces.

Rutherford gave the atomic model by bombarding the gold foil with an alpha particle from radioactive material. It gave the atomic structure constituting the sub-atomic particles.

Most of the alpha particles passed straight through the foil which concluded that most of the space in the atom was empty and the major mass was accumulated at the center.

Therefore, the α particles passed straight as most of the atom has empty spaces.

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The pressure exerted by a gas on its container is directly proportional to the volume of the container. This relationship is known as Boyle's Law, named after the physicist Robert Boyle who first discovered it in the 17th century. Boyle's Law states that when the temperature of a gas remains constant, the pressure and volume of the gas are inversely proportional to each other. In other words, as the volume of the container decreases, the pressure of the gas increases, and vice versa.

This relationship can be explained by the behavior of gas molecules. When a gas is contained in a container, its molecules are constantly colliding with the walls of the container. The more molecules there are, the more collisions there will be, and the greater the pressure will be. However, if the volume of the container is decreased, there will be less space for the molecules to move around in, so they will collide more frequently with the walls of the container, resulting in a higher pressure.
In contrast, the mass of the individual gas molecules, the centigrade temperature of the gas, and the fahrenheit temperature of the gas do not have a direct effect on the pressure exerted by the gas on its container. These factors may affect other properties of the gas, such as its density or its behavior under different conditions, but they are not directly related to Boyle's Law. Similarly, the number of molecules of gas in the sample may affect the pressure of the gas, but only insofar as it affects the volume of the container, which is the primary determinant of pressure in Boyle's Law.

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Answer:

es correcto bro claro eres un crak

Answer:

Decomposition Reaction

Explanation:

You can determine the type of reaction by writing out a balanced equation.

Solid Potassium Chlorate: KClO3

Potassium Chloride: KCl

Oxygen Gas: O2

Balanced Equation: 2KClO3 -> 2KCl + 3O2

By definition, a decomposition reaction is when a single substance decomposes into two more simpler substances. AB -> A + B

Because the solid potassium chlorate is breaking into two substances, potassium chloride and oxygen gas, it is a decomposition reaction.

Answer:

the abbreviation form of full name is called symbol.

the smallest unit of cimpound is called molecule.

2 Acetyl CoA molecules are generated after glycolysis.

The metabolic process known as glycolysis transforms glucose (C6H12O6) into pyruvate (CH3COCO2H). The high-energy molecules adenosine triphosphate (ATP) and reduced nicotinamide adenine dinucleotide are formed using the free energy released during this process (NADH).  A series of ten enzyme-catalyzed processes is known as glycolysis.

A list of the 10 processes involved in the glycolysis pathway. An oxygen-free metabolic pathway is glycolysis (In anaerobic conditions pyruvate is converted to lactic acid). The widespread prevalence of glycolysis in different species suggests that it is an old metabolic system.   In fact, the events that constitute glycolysis and its parallel pathway, the pentose phosphate pathway, take place in the oxygen-free environment of the Archean oceans, likewise in the absence of enzymes, and are activated by metal.

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Answer:

Explanation:

0.25 M

The molarity of a solution will be 4.27M .

Molarity (M), often known as molar concentration, is the concentration of a solution expressed in moles of solute per liter of solution.

Solution can be considered as a mixture of more than one component. It may be homogeneous solution as well as heterogeneous solution.

Gram to mole conversion:

\(=\;2.75\;g.\;\frac{1\;mol}{58.44g} \\=\;0.0470 \;mol\)

Molarity of the solution can be calculated by using the following formula:

It is calculated that, moles of solute = 0.0470 mol, volume of the solution = 1100 mL.

Now, put the value of given data in molarity formula:

\(Molarity=\frac{Moles\;of\;the\;solute}{Volume \;of\; the\; solution} \\=\frac{0.0470\;mol}{1100 \;mL} \\=\;4.27\;mol/mL\\=\;4.27\; M\)

Therefore,  the molarity of a solution will be 4.27M.

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Yes, a miscibility gap exists for a mixture of water and 1-butanol at 928C. The range of compositions over which this gap exists is between the eutectic point and the upper cloud point.

The eutectic point is the composition where the two components form two liquid phases, and the upper cloud point is the composition where the two components form a single liquid phase.

The van Laar parameters for this system (L12) indicate the degree to which changes in temperature, pressure, and composition affect the relative solubility of the two components.

For a mixture of 1-butanol and water at 928C, the relative solubility of the two components decreases as the composition deviates from the eutectic point, resulting in a miscibility gap. The range of compositions over which this gap exists is determined by the van Laar parameters.

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The property can be observed without changing the identity of the substance. The property can be observed or measured these are requirements for something to be a physical property.

Physical properties are properties of matter that can be seen and studied without influencing a sample's molecular structure. The arrangement of the material in a sample may change when a physical quality is evaluated, but the molecules' patterns are unchanged.

Melting point ,boiling point are the example of physical properties.

A property of matter that is autonomous to a change in its chemical components is termed a physical property. Density, color, hardness, melting and boiling points, and electrical conductivity are very few common examples of physical features.

Thus, option A and D are correct.

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Answer:

1. Sodium has a charge of 1+ and chlorine has a charge of 1-

Explanation:

Sodium has 11 protons and 11 electrons. If you remove one electrons we now have only 10 electrons.

Hence; number of protons - number of electrons = 11 - 10 = +1

Sodium has a charge of +1

Chlorine has 17 electrons and 17 protons. if it gains 1 electron then it now has 18 electrons.

Hence; number of protons - number of electrons = 17 - 18 = -1

Chlorine has a charge of -1

The mole ratio of nitrogen gas, N₂ and water, H₂O in the given chemical equation is 5 : 6

Mole ratio of elements in a chemical equation is simply the ratio of the coefficients of the elements in the balanced equation.

With the above information, we shall obtain the mole ratio of N₂ and H₂O. This is illustrated below:

4NH₃ + 6NO -> 5N₂ + 6H₂O

From the balanced equation,

Mole ratio of N₂ and H₂O = Coefficient of N₂ / Coefficient of H₂O

Mole ratio of N₂ and H₂O = 5 / 6

Mole ratio of N₂ and H₂O = 5 : 6

Thus, from the above, we can conclude that the mole ratio of N₂ and H₂O is 5 : 6

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