The number and configuration of ______ determines the chemical behavior of an atom.

Answer:

A. Heat flows from block 1 to block 2

Explanation:

Thermal or heat energy flows when objects of different temperature come in contact. Heat naturally flows from hot objects (high temperature) to cold objects (low temperature) and will keep on flowing until an equilibrium is reached.

According to this question, two blocks of metal, which are of different temperatures, are illustrated to be in contact. Block 1 is at 60°C while Block 2 is at 25°C. Block 1 is hotter than Block 2, hence, heat will flow from block 1 to block 2.

Answer:

C. 14

Explanation:

The mass number is the number of protons + neutrons and the atomic number is the number of protons.

If the mass number is 27, you subtract the atomic number, 13.

27 - 13 = 14 neutrons

Answer:

chemistry - the science that studies the properties of substances and natural fenomens .

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Answer:

The Basic definition of Chemistry is:-

Chemistry is the scientific study of the properties and behavior of matter. It is the natural science that covers the elements that make up matter to the compounds that is composed of atoms, molecules and ions.

The book is a comprehensive textbook on general chemistry that covers all the major topics in the field.

The book is written in a clear and concise style, and it includes many helpful illustrations and examples. It also covers a wide range of topics, from basic atomic structure to advanced topics in thermodynamics and kinetics. The book is suitable for both introductory and advanced chemistry courses.

The book is divided into 13 chapters, each of which covers a major topic in general chemistry. The chapters are organized in a logical order, and they build on each other to provide a comprehensive understanding of the field.

The book includes many helpful features, such as learning objectives, chapter summaries, and practice problems. The learning objectives help students to focus on the key concepts in each chapter, and the chapter summaries provide a concise overview of the material. The practice problems help students to apply the concepts they have learned.

The book is also supported by a variety of online resources, such as a companion website with interactive tutorials and an online homework system. These resources provide students with additional help and practice to master the material in the book.

Overall, Chemistry: The Central Science, 15th Edition is a comprehensive and well-written textbook on general chemistry. It is suitable for both introductory and advanced chemistry courses, and it includes many helpful features to help students learn and master the material.

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The answer to your question is B. evaporation

Answer: Evaporation.

Condensation is gas becoming a liquid, melting is a solid to a liquid, and precipitation rain or snow falling down to earth.

Hope this helps!

"the number of ions produced by one formula unit of the electrolyte," refers to the van't Hoff factor (i) in an ideal solution of a strong electrolyte. It represents the extent of dissociation of the electrolyte into ions.

In an ideal solution of a strong electrolyte, the van't Hoff factor (i) represents the number of ions that are produced when one formula unit of the electrolyte dissociates completely in the solution. It is a measure of the extent of dissociation of the electrolyte.

For example, for a strong electrolyte such as sodium chloride (NaCl), when it dissolves in water, it completely dissociates into sodium ions (Na+) and chloride ions (Cl-). In this case, the van't Hoff factor (i) would be 2 because one formula unit of NaCl produces two ions (Na+ and Cl-).

Similarly, for other strong electrolytes, the van't Hoff factor (i) can be determined based on the number of ions produced per formula unit. It is important to note that for non-electrolytes or weak electrolytes, the van't Hoff factor (i) is typically less than 1, indicating partial dissociation or no dissociation in the solution.

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The pressure difference between the top and bottom of a column of liquid is given by the expression:

ΔP = ρgh

where ΔP is the pressure difference, ρ is the density of the liquid, g is the acceleration due to gravity, and h is the height of the column.

Let's assume that the pressure supporting a column of Hg to a height of 256 mm is equal to 1 atm. Using the density of Hg, we can calculate the pressure difference as:

ΔP = (13.6 g/cm³) x (9.81 m/s²) x (0.256 m) = 33.8 kPa

Now, we can use the pressure difference and the density of water to determine the height of a column of water that would be supported by the same pressure:

ΔP = ρgh

h = ΔP / (ρg)

h = (33.8 kPa) / [(1.00 g/cm³) x (9.81 m/s²)] = 348 cm

Therefore, the answer is A. 348 cm.

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The drink that would typically have the highest concentration of alcohol is hard liquor. Hard liquors are made through the process of distillation, which increases the alcohol content to a higher level.

Hard liquor is defined as liquor with an alcohol content of 30% or more, or 60 proof or higher. This means that they have a higher concentration of alcohol than beer, wine, or other drinks.Liquors are classified into different categories based on their alcohol content, which determines the intensity of their flavors and aromas. Some of the most popular types of hard liquor include whiskey, vodka, rum, gin, tequila, brandy, and cognac.

These liquors are usually consumed in small quantities, and they are often mixed with other ingredients to create cocktails. Their high alcohol content makes them perfect for people who want to drink alcohol without consuming large amounts of liquid.The alcohol content of hard liquor varies depending on the type of liquor and the brand. However, the average alcohol content for most hard liquors is between 35% and 45%. Some of the strongest hard liquors can have an alcohol content of up to 90%. Therefore, it is important to consume hard liquor in moderation to avoid harmful effects on the body.

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The time required to decrease the initial concentration to 0.050 mol/L is 9.62 seconds.

To determine the time required for the second-order reaction to decrease the initial concentration to 0.050 mol/L, we can use the integrated rate law for a second-order reaction:

1/[A]t - 1/[A]0 = kt

Where [A]t is the final concentration, [A]0 is the initial concentration, k is the rate constant, and t is the time. Rearranging the equation, we have:

t = (1/kt) * (1/[A]t - 1/[A]0)

Plugging in the values, [A]t = 0.050 mol/L, [A]0 = 0.100 mol/L, and k = 2.6 × 10–2 L/mol·s, we can calculate the time required to be approximately 9.62 seconds.

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A loan is being repaid by \(2n\) level payments, starting one year after the loan. Just after the nth payment the borrower finds that she still owe \((3/4)\)of the original amount. The proportion of the next payment that is interest is \(1 - 2 * (1 - (1 + r)^{(-n)}) / (3 * (1 - (1 + r)^{(-2n)})).\)

Let \(P\) be the original amount of the loan, and let \(x\) be the level payment made at each of the \(2n\) payments. Then the total amount repaid will be \(2nx\). We know that after \(n\) payments, the borrower still owes \((3/4)P\).

Therefore, the amount repaid after \(n\) payments is \((P - (3/4)P) = (1/4)P\). This means that the total amount repaid after the remaining \(n\) payments is \((3/4)P\).

We can set up an equation using the formula for the present value of an annuity:

\(P = x * (1 - (1 + r)^{(-2n)}) / r\)

where \(r\) is the interest rate per payment period (which we will assume is constant), and the first payment is due one year after the loan.

After \(n\) payments, the outstanding balance is \((3/4)P\). We can use the same formula to find the present value of the remaining \(n\) payments, but with \(P\) replaced by \((3/4)P\):

\((3/4)P = x * (1 - (1 + r)^{(-n)}) / r\)

We can rearrange this equation to solve for \(x\):

\(x = (3/4)P * r / (1 - (1 + r)^{(-n)})\)

Now we need to find the proportion of the next payment that is interest. The interest component of each payment is the difference between the total payment and the amount of principal being repaid. The total payment is \(x\), and the amount of principal being repaid is:

\((3/4)P * r / (1 - (1 + r)^{(-n)})\).

So the proportion of the next payment that is interest is:

Interest component / Total payment

\(= (x - (3/4)P * r / (1 - (1 + r)^{(-n)})) / x\\= 1 - (3/4)P * r / (x * (1 - (1 + r)^{(-n)}))\\= 1 - (3/4)P / (2nx * (1 - (1 + r)^{(-n)}))\\\)

We can simplify this expression by using the equation we derived earlier for \(x\):

\(1 - (3/4)P / (2nx * (1 - (1 + r)^{(-n)}))\\= 1 - (3/4)P / ((3/2)P * r / (1 - (1 + r)^{(-n)}) * (1 - (1 + r)^{(-2n)}))\\= 1 - 2 * (1 - (1 + r)^{(-n)}) / (3 * (1 - (1 + r)^{(-2n)}))\)

So the proportion of the next payment that is interest is:

\(1 - 2 * (1 - (1 + r)^{(-n)}) / (3 * (1 - (1 + r)^{(-2n)})).\)

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a. The explosion of a container of nonstick cooking spray when thrown into a fire can be explained by the kinetic molecular theory of gases. According to the theory, gases consist of molecules in constant random motion. Inside the container, the molecules of the cooking spray are in a compressed state. When the container is exposed to the fire, the heat causes the molecules to gain energy, leading to an increase in their speed and kinetic energy. As a result, the pressure inside the container rises significantly. If the pressure becomes too high for the container to withstand, it can lead to an explosion, releasing the contents forcefully.

b. The rise of a hot-air balloon can be explained by the kinetic molecular theory of gases. When the air inside the balloon is heated, the molecules of air gain kinetic energy and move faster. This increase in molecular motion leads to an increase in pressure inside the balloon. As the pressure inside the balloon becomes higher than the surrounding air pressure, the balloon experiences an upward buoyant force, causing it to rise. This is because the heated air inside the balloon is less dense than the surrounding cooler air. The upward movement of the balloon demonstrates the principles of gas expansion and buoyancy based on the kinetic molecular theory.

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Answer:

Uhm- s-- money- feelings- die? But, slowed -w-

Explanation:

Electrons in pi bonds can spread over a group of atoms. This is what is meant by delocalization of a pi bonded network.

There are two kinds of bonds in chemistry, these are;

Sigma bonds are formed by end to end overlap of atomic orbitals while pi bonds are formed by side by side overlap of atomic orbitals.

Sometimes, pi orbitals are well oriented in such a way that electrons are spread over the pi orbitals of several atoms. For instance, in benzene, there are six pi electrons that are spread over the six carbon atoms in benzene. This is what is meant by delocalization.

Delocalization can only occur when there is are conjugated double bond. This is why delocalization is common in many aromatic compounds. Some inorganic ions such as CO3^2- also have delocalized pi electrons.

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Martin's statement is testable because it can be answered using an experiment. Option C.

Research questions are questions raised during observations. These questions are meant to be answered during the course of the research.

Thus, the experiment must be designed in such a way that all the questions raised during observations are answered by the results of the experiment.

Martin is asking how fast water and nutrients move up the stem of a carnation. A carnation is a plant.

The rate at which water and nutrients move up the stem of a plant is something that can be determined by performing a relevant experiment using the plant in question. This has actually been done in several experiments in the past.

Thus, the question asked by Martin is testable using an experiment.

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Answer: C

Explanation:

Answer:

The first one

Explanation:

9070 mm = 90.7 m

9070mm is actually equal to 9.07m

Successive ionization energy refers to the energy required to remove each electron from an atom or ion, one at a time, in a sequential manner. By analyzing the ionization energy data of oxygen, we can observe patterns that indicate the presence of two occupied electron shells.

The first ionization energy of oxygen corresponds to the energy required to remove one electron from a neutral oxygen atom to form a singly charged oxygen ion (O⁺). This energy is relatively low, indicating that the outermost electron is loosely held.

The second ionization energy represents the energy needed to remove a second electron from the O⁺ ion, forming a doubly charged oxygen ion (O²⁺). The second ionization energy is significantly higher than the first, indicating a stronger attraction between the remaining electrons and the nucleus. This suggests that the second electron is being removed from a deeper, more tightly bound electron shell.

The significant increase in ionization energy between the first and second ionization steps suggests that the electron being removed in the second step occupies an electron shell closer to the nucleus, indicating the presence of two occupied electron shells in the oxygen atom.

Further analysis of the successive ionization energy values can provide insights into the electron configuration and the arrangement of electrons in different shells of an atom.

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The statement that is correct about impact craters and maars is that impact craters form over short periods of time, and maars form over long periods of time. So the correct option is B.

Maars are those volcanic craters that will form when the magma touches the water that will be in the underground area, producing an explosion formed by steam. It can be formed by one or more volcanic explosions that will release steam, water, ash, and magmatic material.

As for the impact crater, it is a depression that will be left on the surface of the planet given by the collapse of a planetary body. They're going to have raised edges and their floor will be lower, because it's going to be caused by this collapse instead of an internal explosion.

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Answer:

Reduction is a process where a substance: Gains one or more electrons. Loses an oxygen atom or Electronegative atoms. Gains a hydrogen atom or Electropositive atoms.

Explanation:

Hope this helps! =D

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Answer:

In a chemical reaction, reduction is a process in which a molecule or ion gains electrons, resulting in a decrease in oxidation state. This process typically involves the transfer of electrons from one molecule to another, resulting in the production of a reduced product.

Explanation:

For example, in the reaction between copper ions and zinc metal, the copper ions are reduced to copper metal while the zinc metal is oxidized to zinc ions:

COUNTER CLAIM:

The approximate value of equilibrium concentration of ammonia is 0.001 M. Thus, the correct answer is (B) 0.0010 M.

The balanced chemical equation for the given reaction is:

HNO₂(aq) + NH₃(aq) ⇌ NH₄⁺(aq) + NO₂⁻(aq)

Therefore, the expression for equilibrium constant for this reaction is:

Kc = [NH₄⁺][NO₂⁻]/[HNO₂][NH₃]

At equilibrium, the concentrations of the reactants and products will be related to each other by the equilibrium constant, Kc. We can use the given values of initial concentrations and the volume to calculate the equilibrium concentrations.

We can assume that the initial concentrations of NH₄⁺ and NO₂⁻ are both zero. Let's define x as the change in the concentration of HNO₂, NH₄⁺ and NO₂⁻, and the equilibrium concentration of NH₃.

We can then write the equilibrium concentrations of the species as:

[HNO₂] = 0.20 M - x

[NH₃] = 0.20 M - x

[NH₄⁺] = x

[NO₂⁻] = x

On substituting these expressions in the equilibrium constant expression, we get:

Kc = [(x)(x)] / [(0.20 M - x)(0.20 M - x)]

On simplifying and solving for x, we get:

x² = Kc * (0.20 M)² - Kc * (0.20 M) * x

x² + Kc * (0.20 M) * x - Kc * (0.20 M)² = 0

Using the quadratic formula and solving we get:

x ≈ 0.0010 M

Thus the correct answer is 0.0010 M.

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Answer: 2d

Explanation:

Because you can not make a 2d

The molecule that is diamagnetic among the options given is N2.

The diamagnetic character of a molecule is determined by the presence of paired electrons in its molecular orbitals. When all the electrons are paired, the molecule is diamagnetic, while when there are unpaired electrons, the molecule is paramagnetic.

Using molecular orbital theory, we can determine the electron configuration of each molecule and predict its magnetic character. In this case, N2 has a bond order of three, indicating a triple bond, and all the electrons are paired, making it diamagnetic.

NO has a bond order of two, with one unpaired electron, making it paramagnetic. F−2 has a bond order of one, with one unpaired electron, making it paramagnetic.

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The word equations into formula equations can be written as .\(3Zn+N_{2}\to Zn_{3}N_{2}\)

The formula is a fact or a rule written with mathematical symbols.

It is the symbolic representation of a chemical equation.

Symbol for zinc is Zn and that for nitrogen gas is N₂.

In general, \(Zn+N_{2}\to Zn_{3}N_{2}\) is the formula equation of

zinc + nitrogen → zinc nitride.

Now, the balanced chemical equation for the given condition can be written as,

\(3Zn+N_{2}\to Zn_{3}N_{2}\)

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Answer:

The correct answer is 5.0 L

Explanation:

STP are defined as T=273 K and P= 1 atm

By using the ideal gas equation, we can calculate the number of moles (n) of the gas at a volume V=2.5 L:

PV= nRT

⇒n= (PV)/(RT) =(1 atm x 2,5 L)/(0.082 L.atm/K.mol x 273 K)= 0.112 mol

For a sample of argon gas, with the same number of moles (0.112 mol) but twice the temperature (T = 273 K x 2= 546 K):

V= (nRT)/P = (0.112 mol x 0.082 L.atm/K.mol x 546 K)/1 atm = 5.0 L

That is consistent with the fact that when a gas is heated, it expanses. So, if the temperature increases twice, the volume also increases twice.

Based on the chemical equation provided, the missing reactant in the reaction is an alkene.

Tertiary alcohols are alcohols in which the carbon atom attached to the hydroxyl group is bonded to three other carbon atoms. They can be formed by the hydration of tertiary alkenes, which are alkenes in which the carbon atom at the site of the double bond is bonded to three other carbon atoms.

In the given reaction, the hydrogen molecule is added to the double bond of a tertiary alkene to form a new carbon-carbon single bond, while the two hydrogen atoms are added to the two carbon atoms of the double bond. The resulting compound is a tertiary alcohol. Therefore, the missing reactant in the reaction is a tertiary alkene that would undergo the addition of H₂ to form the given tertiary alcohol product.

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--The complete reaction is, What is the missing reactant in this organic reaction?--