An electron is present at an energy level with an energy of 16.32 x 10−19 J. During a transition to another level, 5.4 x 10−19 J of energy was absorbed. Which of the following is true about the present state of the electron?

Answer Choices:

A. The electron moved down to an energy level and has an energy of 10.92 x 10−19 J.

B. The electron moved down to an energy level and has an energy of 21.72 x 10−19 J.

C. The electron moved up to an energy level and has an energy of 10.92 x 10−19 J.

D. The electron moved up to an energy level and has an energy of 21.72 x 10−19 J.

Answer:

4is the answer

Explanation:

False. Rather than lactic acid, glucose is changed to pyruvic acid during glycolysis.

A 2-keto derivative of a propionic acid, pyruvic acid is the 2-oxo monocarboxylic acid. It is a byproduct of the glycolytic process. It functions as a cofactor and a fundamental metabolite. It is similar to the propionic acid in terms of function. It is a pyruvate's conjugate acid.

The simplest -ketoacid, pyruvic acid, is essential for sugar metabolism. It is the end result of the anaerobic breakdown of glucose during glycolysis. During exercise, it is converted to lactic acid in the muscle.

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The experimental set up in B is to observe the growth the green beans without the addition of fertilizer. Thus, we can compare the growth of the plant with and without fertilizer and thereby we can understand the effect the fertilizer on the plant growth.

Fertilizers are chemical substances used to nourish the plants by making the soil rich in nutrients and minerals. Plants needs minerals along with water such as potassium, calcium, phosphorous, nitrogen etc.

Sometimes the soil comes deficient of these minerals and we have to fertilize the soli by the addition of the chemicals containing these minerals. Hence, fertilizers provide a nutrient rich soil for plant growth.

The experimental set up with fertilizer added plant and the second one (B) without fertilizer helps to compare the growth in both conditions and we can clearly understand how fertilizers effect the growth of plants by comparing the plant growth in A and B.

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Answer:

A. Cations

Explanation:

To answer this question, you first need to understand the definitions of the answers. A cation is a positively charged ion; this means it lost an electron. An anion is a negatively charged ion that has gained one or more electrons. Proton donors and acceptors don't exist because atoms do not take or give protons. If an atom's number of protons changes then the element itself changes.

Metals have low electronegativity because their number of valence electrons is low; this means they want to get rid of electrons. So, when sodium bonds with another element, it loses an electron. Since it loses an electron it gains a positive charge and becomes a cation.

You can tell that white indigo is the reduced form because it has two additional hydrogen atoms compared to blue indigo.

Indigo is a compound that can exist in two forms: blue indigo and white indigo. Blue indigo is the oxidized form, while white indigo is the reduced form. When indigo is oxidized, it gains oxygen and loses hydrogen, which results in the blue color. On the other hand, when indigo is reduced, it gains hydrogen and loses oxygen, resulting in the white color. Looking at the structures for blue indigo and white indigo, you can tell that white indigo is the reduced form because it has two additional hydrogen atoms compared to blue indigo. These hydrogen atoms were gained through the reduction process.

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A chemical reaction produced 1.87 L of NO: gas at STP. 0.083 moles of NO2 were produced in the reaction.

To determine the number of moles of NO₂ produced in the reaction, you can use the ideal gas law at STP (standard temperature and pressure). At STP, 1 mole of any gas occupies 22.4 L.

The ideal gas equation is a formula that might be used to describe an ideal gas in its fictitious condition.Boyle's law, Charle's law, Avogadro's law, and Gay-Lussac's law are all combined in this formula. \(PV=nRT\) is the formula used, and the gas constant R has a value of 8.314.There are several restrictions in the legislation.Benoit Paul Emile Clapeyron introduced the statute in 1834.Ideal gases are subject to the ideal gas law.Ideal gas equation's graph is a straight line that goes through the origin.
Given that 1.87 L of NO₂ gas was produced, you can use the following proportion:
1.87 L (NO₂) / x moles (NO₂) = 22.4 L (any gas) / 1 mole (any gas)
To solve for x moles of NO₂:
x moles (NO₂) = 1.87 L (NO₂) × (1 mole (any gas) / 22.4 L (any gas))
x moles (NO₂) = 0.08348 moles
So, approximately 0.083 moles of NO₂ were produced in the reaction.

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The experimental percentage yield is the ratio of the actual yield of the product of a reaction to its theoretical yield multiplied by 100.

Percentage yield of a reaction is used to study the efficiency of a chemical reaction. It is the ratio of the actual yield to the theoretical yield multiplied by 100.

The actual yield of a reaction is the experimentally obtained value and it will be less than theoretical yield which is derived from the balanced chemical equation of the reaction.

For example if 5 g be the actual yield of the product in a reaction, but the theoretical or expected yield derived from the equation be 7 g.

then the percentage yield  = 5 /7 × 100 = 71.4 %.

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Answer: 1,480m/s

Explanation:

Answer:

pOH = 10.16

Explanation:

pOH is a measurement in chemistry that could be obtained with the equation:

pOH = 14 - pH

The mathematical definition of the pOH is:

pOH = -log [OH⁻]

If the pH of the solution is 3.84, the pOH is:

pOH = 14 - 3.84

Answer:

10.25

Explanation:

Got it correct!

2 kg of expanded polyethylene has a volume of 2.17 liters.

Given that,

Density = 0.9g/cm³

Mass = 2kg = 2000g

Density is the substance's mass per unit of volume. Although the Roman letter D may also be used, the sign most frequently used for density is ρ (the lowercase Greek letter rho). A substance's density changes as a function of pressure and temperature. With solids and liquids, this variance is often slight, but for gases, it is much more pronounced.

Density = Mass ÷ Volume

0.92 = 2000 ÷ Volume

Volume = 2000 ÷ 0.92

Volume = 2.17 liters.

Hence, 2 kg of expanded polyethylene has a volume of 2.17 liters.

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Your question is in Spanish. The English translation of the question is:

Calculate the volume of 2 kg of expanded polyethylene in liters. ( Density = 0.92g/cm³ )

Answer:

55641.656 × 10^23 molecules

Explanation:

Get the molar mass, multiply by amount of stuff, multiply by Avogadros number.

More detail in picture attached.

Hope it helps. Brainliest Appreciated. :)

The given statement " in valence bond theory, covalent bonds are described in terms of the overlap of atomic or hybrid orbitals" is true.

In quantum mechanics, the valence bond (VB) theory is a model for describing chemical bonding. The Valence Bond Theory (VBT) explains how atoms combine to form molecules by sharing electrons, resulting in the formation of covalent bonds. The VBT explains the role of hybridization, which is when atomic orbitals combine to form hybrid orbitals that allow for the formation of covalent bonds.

Hybridization of atomic orbitals leads to the formation of new orbitals that describe the geometry of the bonding. The overlap of atomic or hybrid orbitals describes covalent bonding in VBT. The probability density of the orbitals is high, meaning the electrons are most likely to be found in the region of overlap, leading to the formation of a covalent bond.

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Answer:

Increases by 100 Pa

Explanation:

According to The Ideal Gas Equation,

Answer:

1.)3.33045

2.)0.02550535714

3.)53.21

4.)26.56

5.)6.72672

6.)3.351

7.)843750

8.)227376.25

9.)0.00172776

10.)8.9577346e+33

Explanation:

A soft, silvery-white metal combines with a yellow gas to form a white crystal-like solid. this change is chemical change.

A chemical change is a change when substance combines with the another substance and form a new substance. when there is complete change in the molecular composition and a new product is formed then it is said to be a chemical change.  A physical change is a change when there will be no new product form. and their will be no change in their chemical identities.

Thus, A soft, silvery-white metal combines with a yellow gas to form a white crystal-like solid. this change is chemical change.

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The Omnipotent view of management refers to the belief that managers are directly responsible for an organization's success or failure. According to this view, managers have the power and control to make decisions that will significantly impact the organization's performance.

In terms of the organizational environment, ABC CO needs to focus on several aspects. Firstly, it should prioritize building strong relationships with customers by understanding their needs and delivering value through its products or services. Secondly, maintaining good relationships with suppliers is crucial to ensure a reliable supply chain and access to necessary resources. Thirdly, keeping a close eye on competitors is essential to stay competitive and identify opportunities for differentiation. Lastly, monitoring and adapting to economic, legal, and socio-cultural factors is vital to ensure compliance with regulations and aligning the organization with societal trends and expectations.

In conclusion, the Omnipotent view of management emphasizes the influence of managers in shaping organizational outcomes, while the Symbolic view recognizes the significance of external factors. For the current state of ABC CO, a balanced approach that considers both internal and external factors would be beneficial. The culture should promote collaboration, innovation, and adaptability, while the organization should focus on building strong relationships with customers, suppliers, and competitors while adapting to the economic, legal, and socio-cultural environment.

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A double displacement equation of silicon could be:
SiO_{2} + 2NaOH → Na_{2}SiO_{3} + H_{2}O

Silicon (Si) is a chemical element with the symbol Si and atomic number 14. It is a metalloid, which means it has properties of both metals and nonmetals. Silicon is commonly used in electronics and computer manufacturing because of its unique properties, such as its ability to conduct electricity and withstand high temperatures.
A double displacement reaction is a chemical reaction in which two compounds exchange ions or bonds to form two new compounds. In the case of silicon, a double displacement equation could be:
SiO_{2} + 2NaOH → Na_{2}SiO_{3} + H_{2}O
This equation represents the reaction between silicon dioxide (SiO_{2}), commonly known as silica, and sodium hydroxide (NaOH), commonly known as lye or caustic soda. In this reaction, the silicon dioxide and sodium hydroxide switch ions to form sodium silicate (Na_{2}SiO_{3}) and water (H_{2}O).

Overall, silicon plays an important role in many chemical reactions and industrial processes, and its unique properties make it a valuable material in various applications.

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A double displacement reaction involving silicon (Si) would typically involve a silicon compound reacting with another compound, causing the ions to exchange places.

An example equation is: SiCl₄ (aq) + 2NaOH (aq) → Si(OH)₄ (s) + 2NaCl (aq)
In this reaction, silicon tetrachloride (SiCl₄) reacts with sodium hydroxide (NaOH), resulting in the formation of silicon hydroxide (Si(OH)₄) and sodium chloride (NaCl) through a double displacement process. The  silicon plays an important role in many chemical reactions and industrial processes, and its unique properties make it a valuable material in various applications.

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Answer:

A given mass of liquid has a fixed volume at room temperature.

Explanation:

Given that the volume remains constant, the sample of oxygen gas will have a pressure of 10.67 kPa at a temperature of -62.0°C, according to the question.

The force per unit area applied to a surface is described by the fundamental physical quantity known as pressure. It is quantified in units of force like pounds per square inch (psi) or newtons per square metre (N/\(m^2\)). In addition to measuring the amount of force delivered to an area, pressure can also be used to gauge how much work a system has accomplished.

Because a gas sample's pressure and temperature are inversely correlated, when the temperature varies, so does the gas pressure. The Ideal Gas Law, which states that P*V = n*R*T, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature, describes the relationship between pressure and temperature for a certain volume of gas.

As a result, we may modify the Ideal Gas Law equation to solve for P in order to determine the pressure at -62.0°C:

P = (n*R*T) / V

P = (n*R*(-62.0 + 273.15)) / V

P = (n*R*211.15) / V

P = (6.58 kPa * 8.314 J/K·mol * 211.15 K) / V

P = 10.67 kPa

Given that the volume remains constant, the pressure of the sample of oxygen gas will be 10.67 kPa at -62.0°C.

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Answer:

The sun provides more than enough energy to meet the whole world's energy needs, and unlike fossil fuels, it won't run out anytime soon. As a renewable energy source, the only limitation of solar power is our ability to turn it into electricity in an efficient and cost-effective way.

As we know that, bond polarity and  the ionic character of any compound increases with raise in the difference of the electronegativity.

The percentage of ionic character of the bond increases with δen. An arbitrary value of 50% ionic character separates ionic from covalent bonding.

What does covalent bonding explain?

When two or more atoms share one or more pairs of electrons, a covalent bond is formed. These electrons are attracted to two neutrons and protons simultaneously. A covalent bond is formed when the difference between the electrical configurations of two atoms is too small for an electrochemical reaction to occur and ions to be produced.

What properties do covalent bonds have?

Bonds between atoms in covalent compounds share electrons. They have distinct physical properties, such as lower melting points and electrical conductivity than ionic compounds, due to the sharing of electrons.

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Answer:

thermal and light energy

Answer:

B. metals

Explanation:

Most of the elements in the periodic table are classified as metals. They are usually solid at room temperature.

The fifth row of the periodic table corresponds to the fifth energy level (also known as the "n=5" energy level) in the atom.

In the context of atomic structure, each energy level represents a specific energy state or shell in which electrons can exist around the nucleus of an atom. The energy levels are labeled using a principal quantum number (n), with n = 1 corresponding to the first energy level (closest to the nucleus) and increasing with each subsequent energy level.

The fifth row of the periodic table consists of elements that have their outermost electrons occupying the fifth energy level. These elements have their valence electrons, which participate in chemical bonding and determine the element's chemical properties, located in the fifth energy level.

It's important to note that the periodic table is organized in a way that groups elements with similar electronic configurations and chemical properties together. Thus, elements in the same row generally have similar characteristics and exhibit periodic trends in their properties.

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We require these compounds to migrate up the plate in order to provide a better separation of them. We will need to make the eluting solvent more polar in order to do this. Ethyl acetate could be substituted with a more polar solvent, such as acetone, as a possible remedy.

Non-volatile mixtures can be separated using the chromatography technique known as thin-layer chromatography (TLC).

A sheet of an inert substrate, such as glass, plastic, or aluminum foil, is used for thin-layer chromatography. This substrate is coated with a thin layer of an adsorbent material, typically silica gel, aluminum oxide (alumina), or cellulose. The stationary phase refers to this adsorbent layer. A solvent or solvent combination (referred to as the mobile phase) is dragged up the plate by capillary action after the sample has been placed on the plate. Separation is accomplished because various analytes ascend the TLC plate at various speeds.

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The correct option is e) OF2

A molecule is linear if all its atoms lie in a straight line. Among the given molecules, the one that would be linear is OF2.

OF2 stands for oxygen difluoride. It is a covalent compound that contains two fluorine atoms bonded to a single oxygen atom, resulting in the molecular formula OF2.

Lewis structure of OF2: Before we decide whether OF2 is linear or not, let's draw the Lewis structure of the molecule:

VSEPR theory is used to predict the geometry and shape of molecules. According to the VSEPR theory, electron pairs in the valence shell of the central atom of a molecule repel each other and arrange themselves to be as far apart as possible to minimize repulsion forces.The geometry of a molecule is determined by the total number of electron pairs around the central atom of the molecule, which is called the steric number. The shape of the molecule is determined by the arrangement of these electron pairs.For OF2, the steric number of the central atom (oxygen) is three. Therefore, according to VSEPR theory, the molecular geometry of OF2 is V-shaped or bent. However, the molecule is linear with respect to the central atom (oxygen) because there are no lone pairs on oxygen atom, but only two bonding pairs, which are directed opposite to each other. In conclusion, the molecule that is linear among the given molecules is OF2.

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Increasing atomic radius can have a significant impact on the crystal structure of a material, affecting parameters such as interatomic distances, coordination numbers, lattice parameters, symmetry, and mechanical properties.

As the atomic radius increases, there are several effects on the crystal structure of a material:

1. Interatomic Distance: With increasing atomic radius, the average distance between neighboring atoms in a crystal lattice also increases. This leads to a larger unit cell and a decrease in atomic packing density.

2. Coordination Number: The coordination number refers to the number of atoms surrounding an atom in a crystal lattice. As the atomic radius increases, the coordination number may change. For example, a smaller atom might have a higher coordination number, while a larger atom might have a lower coordination number. This can influence the overall structure and stability of the crystal.

3. Lattice Parameters: The lattice parameters, such as the lattice constant or unit cell dimensions, may be affected by changes in atomic radius. An increase in atomic radius can result in an expansion of the crystal lattice, leading to changes in the lattice parameters.

4. Symmetry: Changes in atomic radius can affect the symmetry of the crystal structure. Larger atoms may disrupt the symmetry and introduce distortions or vacancies in the crystal lattice.

5. Mechanical Properties: The mechanical properties of a material, such as its strength, hardness, and flexibility, can be influenced by changes in atomic radius. Alterations in atomic size can affect the bonding forces between atoms and, consequently, the material's mechanical behavior.

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============================================

Work Shown:

Using the periodic table, we see that

These are approximations and these values are often found underneath the atomic symbol. For example, the atomic weight listed under carbon is roughly 12.011 grams. I'm rounding to 2 sig figs in those numbers listed above.

So 1 mole of CO2 is approximately 12+2*16 = 44 grams. The 2 is there since we have 2 oxygens attached to the carbon atom.

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

Since 1 mole of CO2 is 44 grams, we can use that to convert from grams to moles.

11.0 grams of CO2 = (11.0 grams)*(1 mol/44 g) = (11.0/44) mol = 0.250 mol of CO2

In short,

11.0 grams of CO2 = 0.250 mol of CO2

This is approximate.

We don't need to use any of the information in the table.

Answer:

.250

Explanation:

Based on the given pH scale, we can only conclude that baking soda is a weak base (option A).

According to the given pH scale, we can determine the strengths of various substances as acids or bases. Let's analyze each option:

A) Baking soda is listed with a pH of 9, which indicates it is a weak base. Bleach is not specifically mentioned in the given pH scale, so we cannot determine its classification based on the information provided. Therefore, option A cannot be concluded.

B) Coffee is listed with a pH of 4, indicating it is a weak acid. Drain cleaner is listed with a pH of 14, which suggests it is a strong base. Thus, option B is incorrect.

C) Oven cleaner is not specifically mentioned in the given pH scale, so we cannot determine its classification. Battery acid, on the other hand, is listed with a pH of 0, which indicates it is a strong acid. Therefore, option C cannot be concluded.

D) Soft drinking water is listed with a pH of 5, indicating it is a weak acid. Soapy water is not specifically mentioned, so we cannot determine its classification based on the information provided. Hence, option D is incorrect.

In summary, based on the given pH scale, we can only conclude that baking soda is a weak base (option A). The information provided does not allow us to determine the strengths of bleach, oven cleaner, or soapy water.

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Note- The question seems to be incomplete and the complete question isn't available in the search engine.

Answer:

No they are not identical.

Explanation:

They are not identical because there are many ranges of states that the electrons could have.

I hope it helps! Have a great day!

Muffin ^^

Answer:

No.

Explanation:

It could vary so it wouldn’t be identical.

I hope it helps! Have a great day!

bren~