For charged particles, how does the strength of the interaction vary in each of the following cases? (Increase or decrease) a. The distance between the charges increases. b. The size of the charge decreases.

The statement "the procedure for making zeolite is carried out in an acidic medium" is False.

Zeolite is a crystalline aluminosilicate mineral that occurs naturally.

It is widely used in various applications, including water purification, agriculture, and petrochemical refining.

Zeolites can be synthesized in the laboratory using different methods, such as hydrothermal and sol-gel methods.

The zeolite synthesis process is carried out in an alkaline or basic medium, not in an acidic medium.

Alkaline solutions, such as sodium hydroxide or potassium hydroxide, are commonly used to initiate the synthesis reaction, which involves the reaction of a source of silica, such as silicate, with a source of alumina, such as aluminate, in the presence of water and other chemical agents.

There are various types of zeolites with different chemical compositions, crystal structures, and properties.

The specific synthesis conditions, such as temperature, pressure, and reaction time, can also affect the final properties of the zeolite.

Therefore, the synthesis of zeolites requires precise control of the reaction conditions to obtain the desired properties.

Zeolites have a unique structure that can adsorb and exchange ions and molecules.

This property makes them useful in various applications, such as catalysis, separation, and ion exchange.

Zeolites can also be modified or functionalized to enhance their properties for specific applications.

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The type of atomic orbital that can be described as having 2 lobes of electron density separated by a nodal plane is the P orbital.

In atomic theory, an atomic orbital is a mathematical function that describes the behavior of one electron in an atom. It is a region in space with a high probability of locating an electron.

There are 3 types of orbitals available in each sub-shell of an atom. The sub-shell in each shell can be used to predict the number of orbitals.

There are 1 s-orbital, 3 p-orbitals, 5 d-orbitals, and 7 f-orbitals available in the first, second, and third shells, respectively. The type of atomic orbital that can be described as having 2 lobes of electron density separated by a nodal plane is the P orbital.

Each P orbital has two lobes of electrons located on either side of the nucleus separated by a nodal plane. The lobes can be polarized, making them more or less prominent depending on the situation.

This configuration provides the P orbital with a unique geometry and makes it highly suitable for molecular bonding.

The P orbital has a total of three different orientations. Each orientation corresponds to a different direction in space in which the lobes can be located. The three orientations are Px, Py, and Pz.

Each P orbital can hold a maximum of 2 electrons.

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a.) The stressor that causes high concentrations of abscisic acid to travel from the roots to the shoot is drought.

An essential element of a plant's reaction to abiotic stress, particularly drought, is played by the hormone abscisic acid (ABA). Drought causes plants to create large amounts of ABA, which is then transferred from the roots to the shoot. Many physiological reactions result from this, including the closing of stomata, which lowers water loss through transpiration, and the activation of genes that encourage the manufacture of proteins that shield cells from dehydration-related cell damage. In addition, ABA causes inhibition of root development, which enables roots to sever deeper layers of soil in quest of water. In general, ABA production and transport play a key role in how plants manage drought stress and keep their water balance.

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The change that is useful for the environment and living things is called "positive environmental change."

Positive environmental change refers to any alteration or modification in the environment that improves or benefits living organisms' well-being. Examples of positive environmental changes include reducing pollution, conserving water, using renewable energy sources, and recycling waste products. Positive environmental change is essential to ensure a sustainable future and to maintain the planet's biodiversity.

It can be achieved by implementing new policies, practices, and technologies that promote sustainable development and reduce the negative impact on the environment. Positive environmental change can also help to address climate change and other environmental challenges faced by humanity. By taking positive steps to protect the environment, we can ensure that future generations can also enjoy a healthy, prosperous, and sustainable planet.

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The correct answer is B) Urea. Urea is a waste product of protein metabolism, and is released from the body through sweat, where the ammonia and other waste products form urea.

Lysozymes are enzymes that are naturally produced in most living organisms. They are responsible for helping to break down peptidoglycan, a substance found in the cell walls of various bacteria. This helps to prevent bacterial growth and spread, as well as helping to keep the cells intact. Lysozymes are also known to act as an antimicrobial agent, helping to destroy the cell walls of some types of bacteria.

Sebum is an oily substance produced by the sebaceous glands of the skin. The sebaceous gland is located in the hair follicles and it is responsible for secreting the sebum. Sebum production is regulated by hormones and usually occurs when the body needs more moisture (such as during puberty). Sebum can act as a barrier to protect the skin and prevent it from drying out. It helps to keep the skin hydrated, soft and supple. In addition, it helps to reduce bacterial buildup on skin. Sebum is also responsible for giving skin its natural glow.

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When scientists first discovered that atoms were composed of smaller particles, such as electrons, protons, and neutrons, they did not reject atomic theory because the experimental evidence supported the idea that atoms were still the fundamental building blocks of matter.

Instead of rejecting atomic theory, scientists modified it to incorporate the new information about the structure of atoms. For example, Ernest Rutherford's famous gold foil experiment in 1911 showed that atoms had a small, positively charged nucleus at their center, which was surrounded by negatively charged electrons.

This discovery led to the development of the modern model of the atom, which is still based on the idea that atoms are the smallest units of matter that retain the properties of an element. However, the model has been updated to reflect our current understanding of the subatomic particles that make up atoms.

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The principles that underlie balancing chemical equations include the law of conservation of mass and the concept of stoichiometry.

The law of conservation of mass states that matter can neither be created nor destroyed in a chemical reaction, meaning that the total mass of the reactants must be equal to the total mass of the products. This principle requires that the number of atoms of each element on the reactant side of the equation must be equal to the number of atoms of that element on the product side. The concept of stoichiometry involves using the balanced equation to determine the quantitative relationships between the reactants and products, including the amounts of each substance involved in the reaction.

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--The complete question is, The principles that underlie balancing chemical equations include the______________ and the concept of stoichiometry. ---

(a) The pH of pure water is 7, which is neutral. (b) The universal indicator would show a yellow color in an aqueous solution of sugar, because sugar is a neutral compound with a pH of 7.(c) The pH of the rain water is likely around 5 or 6, which indicates a weak acid.

pH is less than 7 since yellow color indicates acidic rainwater. Rainwater has an acidic pH because it dissolves atmospheric carbon dioxide (CO2), sulfur dioxide (SO2), and nitrogen oxides (NOx), forming weak carbonic, sulfuric, and nitric acids.

Rainwater that has a pH below 5.6 is considered to be acid rain. Therefore, the acid present in rainwater is a weak acid because the pH of the rainwater is above 1.

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Answer:

2,1,1  

Explanation:

The heat transfer during the combustion of n-octane gas (C8H18) with 95% excess air in a constant pressure burner is 37039 kJ/kg fuel. This is calculated using the enthalpy of the formation of the products and reactants. The air and fuel enter the burner steadily at standard conditions, and the products of combustion leave at 265°C.

The enthalpy of combustion of the fuel is determined by subtracting the enthalpy of formation of the reactants from the enthalpy of formation of the products. The enthalpy of formation of the reactants is determined by multiplying the standard enthalpy of formation for each compound in the reaction by the number of moles of each compound and adding the result.

The enthalpy of formation of the products is determined by multiplying the standard enthalpy of formation for each compound in the reaction by the number of moles of each compound and adding the result. The heat transfer during combustion is then determined by subtracting the enthalpy of formation of the reactants from the enthalpy of formation of the products, resulting in 37039 kJ/kg fuel.

The heat transfer during the combustion of n-octane gas (C8H18) can be calculated using the formula Q = m × Cp × ΔT. Here, m is the mass of the fuel burnt, Cp is the specific heat capacity, and ΔT is the change in temperature. Let's substitute the given values: Mass of fuel burnt = 1 kg (since 37039 kJ/kg fuel is given)Cp of n-octane gas = 2.22 kJ/kg/K (given)ΔT = (265 - 25) = 240 K (since the temperature of products is given as 265°C = 538 K and standard temperature is 25°C = 298 K)Therefore, the heat transfer during combustion of n-octane gas is: Q = m × Cp × ΔT = 1 × 2.22 × 240 = 532.8 kJAnswer: The heat transfer during this combustion is 532.8 kJ.

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NaOH (aq) + HCl (aq) → H2O (l) + NaCl (aq). The stoichiometric coefficient of NaCl is 1, so it will produce the same amount of moles as NaOH.

To determine the limiting reactant in this equation, the first step is to calculate the number of moles of each reactant available.

10 moles of NaOH and 12 moles of HCl are available, so we can use these values.

Then, we need to compare the calculated moles to the stoichiometric coefficients in the balanced equation.

The reactant that produces the least amount of product is the limiting reactant.

Let us begin with the number of moles of NaOH:

10 mol NaOH × (1 mol HCl / 1 mol NaOH) = 10 mol HCl

This means that if 10 mol of NaOH reacts, then 10 mol of HCl is also consumed.

Next, we calculate the number of moles of HCl available:

12 mol HCl × (1 mol NaOH / 1 mol HCl) = 12 mol NaOH

So if 12 mol of HCl is reacted, then 12 mol of NaOH is consumed.

Since we have more HCl than NaOH, the limiting reactant is NaOH.

Therefore, NaOH is the limiting reactant in this reaction.

We can also determine the maximum amount of NaCl that can be produced from this reaction by using the moles of NaOH. The stoichiometric coefficient of NaCl is 1, so it will produce the same amount of moles as NaOH.

Therefore, 10 mol of NaOH can produce a maximum of 10 mol of NaCl.

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The compound that is a non-electrolyte when dissolved in water is CCl4.

When CCl4 dissolves in water, it does not break down into ions, and it does not conduct electricity.What is an electrolyte?An electrolyte is a compound that dissolves in water, and its solution conducts electricity due to the presence of ions. A compound must dissociate in water to produce ions to be considered an electrolyte. The ions can move freely through the solution, allowing for the conduction of electricity.There are three types of electrolytes: strong electrolytes, weak electrolytes, and nonelectrolytes. Strong electrolytes dissociate fully into ions in water and conduct electricity very efficiently. Weak electrolytes only partially dissociate, and they conduct electricity less efficiently than strong electrolytes.Nonelectrolytes are substances that do not dissolve in water or dissolve but do not dissociate into ions. Because they do not have ions, they do not conduct electricity. CCl4 is a nonelectrolyte, as it does not produce any ions when it dissolves in water.

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The theoretical yield of the solid product FeCO₃ in the reaction here is 18.18 grams. This is because, FeCl₂ is a limiting agent.

The precipitation reaction occurring between iron (II) chloride, FeCl₂ and potassium carbonate K₂CO₃

The Molecular equation is given below: FeCl₂ + K₂CO₃ → FeCO₃ + 2KCl

The Complete Ionic equation is given below: Fe₂⁺ + 2Cl⁻ + 2K⁺ + CO₃²⁻ → FeCO₃ + 2K⁺ + 2Cl⁻

The Net Ionic equation is given below: Fe²⁺ + CO₃²⁻→ FeCO₃

Molar mass of FeCl₂ = 126.75 g/mol

Molar mass of K₂CO₃ = 138.21 g/mol

n(FeCl₂) = mass/Mr = 20/126.75 = 0.1578 m

n(K₂CO₃) = mass/Mr = 25/138.21 = 0.1808 m

Therefore, FeCl₂ is the limiting agent. The theoretical yield of FeCO₃ can be calculated as follows: FeCl₂ + K₂CO₃ → FeCO₃ + 2KCl

1 mole of FeCl₂ produces 1 mole of FeCO₃

Moles of FeCO₃ produced = 0.1578 mol

FeCO₃ molar mass = 115.86 g/mol

Mass of FeCO₃ produced = 0.1578 mol × 115.86 g/mol = 18.18 g

Thus, the theoretical yield of the solid product FeCO₃ is 18.18 g.

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Phosphorylation of either of the terminal hydroxyl groups of glycerol will create b. L-glycerol-1-phosphate.

Glycolysis is a metabolic pathway in which glucose is broken down into two pyruvates in the presence of oxygen. Glycerol is a molecule that serves as a precursor to triacylglycerols and phospholipids. Glycerol, which is a 3-carbon molecule, is broken down into dihydroxyacetone phosphate and glyceraldehyde 3-phosphate in the glycolysis pathway.

The structure of glycerol comprises of two terminal hydroxyl groups, -OH, on carbons 1 and 3 of glycerol are the primary alcohol groups. These groups can be phosphorylated by a kinase enzyme to produce two different phosphates: L-glycerol-1-phosphate or D-glycerol-3-phosphate.

Phosphorylation of either of the terminal hydroxyl groups of glycerol will create L-glycerol-1-phosphate. This molecule is a phosphoric acid ester of glycerol that is classified as a glycerophosphate. Phosphorylation of the 1-hydroxyl group produces L-glycerol-1-phosphate, whereas phosphorylation of the 3-hydroxyl group produces D-glycerol-3-phosphate.

Therefore, the phosphorylation of either of the terminal hydroxyl groups of glycerol will create L-glycerol-1-phosphate.

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The effect of low [s] is that the rate of the reaction will decrease and the effect of high [s] is that the rate of the reaction will increase. When Vo is one-half of Vmax, the effect is that the reaction has reached its half-maximum velocity, or that the reaction has reached its maximum efficiency.

The rate of the reaction will decrease in the case of low [s] as the substrate concentration is too low to support the reaction. On the other hand, the rate of reaction will increase in the case of high [s] as there is a greater amount of substrate to drive the reaction.

To understand these effects in a better way, we can use the Michaelis-Menten equation to calculate the rate of reaction at various substrate concentrations (Vo and Vmax) and also the reaction's maximum velocity (Vmax):-

V = Vmax[S]/(Km + [S])

Where Vmax is the maximum velocity of the reaction, Km is the Michaelis constant, and [S] is the concentration of the substrate.

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HNO3 and HBr can also be used instead of the provided acids (h2so4 and h3po4) to isolate solid copper in this experiment. Solid copper can be isolated by reacting it with acid. This is achieved in two stages: stage one, where copper reacts with sulfuric acid to produce copper sulfate and hydrogen gas, and stage two, where copper sulfate is reduced to copper using hydrogen gas.  

Therefore, in part b of the experiment, H2SO4 and H3PO4 are used. HNO3 and HBr can also be used instead of H2SO4 and H3PO4 to isolate solid copper. H2S and H2CO3 cannot be used as the acids to isolate solid copper. 'Hence, the correct options are : HNO3 and HBr Therefore, both HBr and HNO3 could be used in place of the acids (H2SO4 and H3PO4) to isolate solid copper in part b of this experiment.

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The structure of the resulting compound from the reaction of NO and NO2 is the compound is known as dinitrogen pentoxide, N2O5.The bond energy in NO is about 631 kJ/mol.The bond energies in NO2 are both about 240 kJ/mol.

N2O5 is the chemical formula for dinitrogen pentoxide, often known as nitrogen pentoxide or nitric anhydride. It belongs to the family of chemicals known as binary nitrogen oxides, which simply consists of nitrogen and oxygen. It exists as colourless crystals that sublimate at a temperature just above ambient to produce a colourless gas. Dinitrogen pentoxide, an unstable and potentially harmful oxidant, was originally employed as a reagent for nitrations when dissolved in chloroform, but nitronium tetrafluoroborate has completely replaced it (NO2BF4).

N2O5 is a rare instance of a substance that can change its structure based on the environment. The solid is a salt, nitronium nitrate, consisting of distinct nitronium cations [NO2]+ and nitrate anions [NO3]−; although in the gas phase and under some other situations  it is a covalently-bound molecule.

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Each reaction's Lewis acid and Lewis base are as follows:

AlCl3 is the Lewis acid in the reaction, whereas Cl- is the Lewis base. F- is the Lewis base and BF3 is the Lewis acid in the reaction Cl- + AlCl3 --> AlCl4- BF3 + F- --> BF4-

The Lewis base in this reaction is NH3, and the Lewis acid is H+. NH3 + H+ --> NH4+

Explanation: A Lewis acid acts as an electron pair acceptor in a Lewis acid-base reaction, whereas a Lewis base acts as an electron pair donor. In the initial reaction, Cl- provides AlCl3 with a pair of electrons, which AlCl3 accepts to produce AlCl4-. As a result, AlCl3 is the Lewis acid and Cl- is the Lewis base. In the subsequent response, F- provides two pairs. BF3 takes the electrons and transforms them into BF4-. Hence, the Lewis bases are F- and BF3, respectively. In the third reaction, H+ absorbs a pair of electrons from NH3 and forms NH4+ as a result. As a result, the Lewis bases are NH3 and H+.

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The amount of iodosalicylamide synthesized in the reaction performed by Edward by using 0.97 g of salicylamide will be about 2.87 grams.

Iodosalicylamide is synthesized by reacting salicylamide and sodium iodide in the presence of an oxidant. Iodosalicylamide is used as a reagent to detect the presence of oxidizing agents.

To find the mass of iodosalicylamide produced, we must first determine the limiting reagent for the reaction. The limiting reagent is the one that is consumed entirely, preventing the reaction from continuing even though the other reactants are present. The limiting reagent is the one that produces the least amount of product.

Moles of salicylamide:

moles = mass / molar mass = 0.97 g / 137.14 g/mol = 0.00708 moles

Moles of sodium iodide:

moles = mass / molar mass = 1.63 g / 149.89 g/mol = 0.0109 moles

Since iodosalicylamide is formed in a 1:1 ratio with the limiting reagent, sodium iodide, the limiting reagent is sodium iodide. Therefore, the theoretical yield of iodosalicylamide is the same as the moles of sodium iodide used.

Moles of iodosalicylamide = 0.0109 mol

Mass of iodosalicylamide = moles × molar mass = 0.0109 mol × 263.03 g/mol = 2.87 g

Therefore, the mass of iodosalicylamide that would be formed, assuming 100% yield, is 2.87 g, rounded to two decimal places.

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Answer:

In chemical kinetics, the rate constant (k) is a proportionality constant that relates the rate of a chemical reaction to the concentrations of the reactants. It is often included in the rate law equation, which expresses the relationship between the rate of the reaction and the concentrations of the reactants.

However, the rate constant is not truly constant because it can vary with different experimental conditions. The rate constant is affected by factors such as temperature, pressure, and the presence of catalysts or inhibitors. For example, an increase in temperature usually leads to an increase in the rate constant, while the addition of a catalyst can decrease the activation energy and increase the rate constant.

Two specific examples that support this statement are:

1) The effect of temperature on the rate constant: Consider the reaction A → B, which has a rate law equation of rate = k[A]. If the temperature is increased, the rate constant will increase due to the increase in kinetic energy of the reactant molecules. This means that the reaction will proceed faster at higher temperatures, even if the concentration of A remains the same.

2) The effect of catalysts on the rate constant: Consider the reaction C + D → E, which has a rate law equation of rate = k[C][D]. If a catalyst is added to the reaction, it can increase the rate constant by providing an alternate pathway with a lower activation energy. This means that the reaction will proceed faster at the same concentrations of C and D with the catalyst present than without it.

Explanation:

The number of moles of NaOH used in this titration of a 25.00 ml monoprotic strong acid solution is 0.0007919 moles.

In order to find out the number of moles of NaOH used in a titration, we can use the formula:

moles of NaOH = concentration of NaOH × volume of NaOH used in titration

Given:Volume of monoprotic strong acid solution = 25.00 mL

Concentration of NaOH = 0.09014 M

Volume of NaOH used in titration = 8.781 mL

We can convert mL to L by dividing it by 1000. So,Volume of monoprotic strong acid solution = 25.00 mL = 25.00/1000 L = 0.02500 L

moles of NaOH = concentration of NaOH × volume of NaOH used in titration= 0.09014 M × 8.781/1000 L= 0.0007919 moles of NaOH

Hence, the number of moles of NaOH used in this titration is 0.0007919 moles.

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A color change would still occur at the equivalence point if an indicator had not been introduced during titration, but it would not be obvious when it had been reached.

Even though the pH of the solution would still vary dramatically at the equivalency point, it would be challenging to determine when this point has been achieved without an indicator. By include an indication in the formula, the endpoint may be identified by a distinct and perceptible color shift. This makes it easier for the researcher to calculate the volume of titrant needed to achieve the equivalence point. So, it would not be possible to determine when the indicator was added if one was not used during titration. a distinct and perceptible color shift.

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A chemical substance or natural product known as a lead compound has biological action against a pharmacological target.

A critical phase of the drug discovery program is lead identification and optimization.

There are two main oxidation states for compounds containing lead: +2 and +4. The first is more typical. Strong oxidants or only occurring in extremely acidic conditions are typical characteristics of inorganic lead(IV) compounds.

The percent yield equation is:

percent yield = actual yield/theoretical yield x 100%

The ratio of the actual yield to the theoretical yield multiplied by 100 is the percent yield.

Characterizing natural products, using combinatorial chemistry, or using molecular modeling as in rational drug design are methods for finding lead compounds. Lead compounds can also be made from substances that high-throughput screening identified as hits.

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Using the following formula, the total cell potential, Ecell, may be calculated:   Ecathode + anode equals Ecell. where Ecathode is the cathode half-reduction reaction's potential and Eanode.

We can determine the minimal Eanode needed to create a cell potential of 0.90 V since the engineer suggests employing a half-reaction with EPod = -0.75 V at the cathode:

Ecathode + anode equals Ecell.

Eanode: 0.90 V = -0.75 V

Eanode = 0.75 0.90 volts

Eanode equals 1.65 V.

The half-reaction employed at the anode must thus have a standard reduction potential of -1.65 V or less.

The typical reduction potential of the half-reaction utilised at the anode, on the other hand, has no upper limit. Yet, a higher Ecell and a more effective galvanic cell would be produced by a larger reduction potential at the anode.

We can utilise the half-reaction to create a balanced equation for the anode half-reaction:

Cu(s) becomes Cu2+(aq) plus 2e-

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Accommodating involves one party sacrificing their own interests to satisfy the other party's needs while collaborating involves both parties working together to find a mutually beneficial solution.

Conflicts can be quickly resolved and positive relationships between the parties involved by being accommodating. For instance, one student might decide to abandon their idea in favor of the other student's idea if two students in a group project have opposing opinions on how to approach a task. This can help the group get along better and avoid conflicts.

On the other hand, working together can result in creative answers that benefit both parties. When two people work together, they combine their distinctive perspectives and ideas, which can result in innovative solutions that neither party would have thought of on their own. For instance, if two students disagree on how to complete a group assignment, they can work together and combine their ideas to come up with a more thorough and workable solution.

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A physical and mental impairment resulting from the use of alcohol is called Alcohol Use Disorder (AUD).

AUD is a chronic disease characterized by a preoccupation with alcohol, increased tolerance to it, and physical dependence on it. Symptoms include intense cravings, withdrawal, and a loss of control over drinking. Long-term effects of AUD include liver damage, poor mental and physical health, and an increased risk of developing certain types of cancer. Treatment for AUD often involves therapy and medication to help with withdrawal symptoms, cravings, and the physical and mental impairments resulting from the use of alcohol.

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The chemical that the brain produce that makes people feel good when they exercise is dopamine and endorphins.

Endorphins are any of a group of peptide hormones found in the brain that act as neurotransmitters and have properties similar to morphine.

A neurotransmitter is any substance, such as acetylcholine or dopamine, responsible for sending nerve signals across a synapse between two neurons.

When you exercise, your body releases chemicals such as dopamine and endorphins in your brain that make you feel happy.

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The given substances are listed as follows strong acids as HCIO, HI; weak acids as [tex]CH_3COOH[/tex], [tex]CH_3NH_2[/tex], HCOOH, HF; strong bases as KOH, CSOH and weak bases as [tex]NH_3(CH_3)_2NH[/tex].

Substances are classified into four types strong acids, weak acids, strong bases, and weak bases.

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A sense strand is the mRNA strand that is translated from a DNA strand with a same nucleotide sequence. the codons have specific functions when the mRNA sequence is translated into a protein.

The DNA sequence serves as a template for the synthesis of a complementary mRNA molecule during transcription. The nucleotide arrangement of the DNA template strand dictates the sequencing of the mRNA. The mRNA sequence is not identical to the template DNA strand; rather, it is complementary to it. RNA polymerase, which builds the mRNA molecule on the DNA template strand, adds complementary RNA nucleotides to the lengthening mRNA chain. Since RNA nucleotides have uracil (U) as a base instead of thymine (T), the mRNA sequence will have the same nucleotide sequence as the DNA template strand. The mRNA sequence is read in groups of three nucleotides called codons, and the codons have specific functions when the mRNA sequence is translated into a protein.

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Answer:

Characteristics of matter change due to chemical changes, not physical ones. Physical properties can be determined without changing the substance's chemical identity

Explanation: