Rank the compounds in Problem 12.63 in order of decreasing viscosity at a given temperature; explain your ranking.

Answer:

I am not sure you would have to screenshot ur page

Answer:

It won't work as well. You can try though, it won't hurt anything

Answer:

48m/s

Explanation:

Answer:

People show more interest in personal broadcasting.

Explanation:

The art of oration (speaking) is being  replaced by personal broadcasting mean now people used webcam or camcorder for creating its own content and transmit it to other people through internet. Personal broadcasting provides audio and video to the individual that make it more interesting as compared to oration. People show more interest in personal broadcasting as compared to oration so that's why oration is replaced by personal broadcasting.

Answer:

KCl is the answers for the question

Explanation:

please give me brainlest

Answer:

KCl

this is the answer hope its helps you I tried my best to give you the best answer ;)

Answer: The enthalpy of neutralization is the energy change associated with the reaction of an acid and a base to form a neutral solution of a salt and water. This energy change is typically exothermic, meaning it releases heat.

The acid strength can have an effect on the enthalpy of neutralization. Generally, stronger acids have a more negative enthalpy of neutralization because they release more heat when they react with a base. This is because stronger acids donate their protons more readily to the base, resulting in a stronger electrostatic attraction between the resulting ions, and therefore a more exothermic reaction.

However, it is important to note that the effect of acid strength on enthalpy of neutralization is not the only factor affecting this energy change. Other factors that can influence the enthalpy of neutralization include the strength of the base, the concentration of the acid and base, and the specific reaction conditions, such as temperature and pressure.

Explanation: The enthalpy of neutralization is the energy change associated with the reaction of an acid and a base to form a neutral solution of a salt and water. This energy change is typically exothermic, meaning it releases heat.

The acid strength can have an effect on the enthalpy of neutralization. Generally, stronger acids have a more negative enthalpy of neutralization because they release more heat when they react with a base. This is because stronger acids donate their protons more readily to the base, resulting in a stronger electrostatic attraction between the resulting ions, and therefore a more exothermic reaction.

However, it is important to note that the effect of acid strength on enthalpy of neutralization is not the only factor affecting this energy change. Other factors that can influence the enthalpy of neutralization include the strength of the base, the concentration of the acid and base, and the specific reaction conditions, such as temperature and pressure.

If more \(H_{2}\) and \(N_{2}\) are added to the reaction 3\(H_{2}\) + N2 → 2\(NH_{3}\) after it reaches equilibrium, two events will occur Shift in Equilibrium and Increased Yield of \(NH_{3}\)

1. Shift in Equilibrium: According to Le Chatelier's principle, when additional reactants are added, the equilibrium will shift in the forward direction to consume the added reactants and establish a new equilibrium. In this case, more \(NH_{3}\) will be produced to counteract the increase in \(H_{2}\) and \(N_{2}\).

2. Increased Yield of \(NH_{3}\): The shift in equilibrium towards the forward reaction will result in an increased yield of \(NH_{3}\). As more \(H_{2}\) and \(N_{2}\) are added, the reaction will favor the production of \(NH_{3}\) to maintain equilibrium. This will lead to an increase in the concentration of \(NH_{3}\) compared to the initial equilibrium state.

It is important to note that the equilibrium position will ultimately depend on factors such as the concentrations of \(H_{2}\), \(N_{2}\), and \(NH_{3}\), as well as the temperature and pressure of the system. By adding more reactants, the equilibrium will adjust to achieve a new balance, favoring the formation of more \(NH_{3}\).

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Answer:

101.4pKa

Explanation:

Given parameters:

Initial Volume of helium  = 3.20L

Final pressure of helium  = 59kPa

Final volume on helium gas = 5.5L

Unknown:

Initial pressure exerted on the balloon = ?

Solution;

To solve this pressure - volume problem, we simply apply the Boyle's law.

It states that "the volume of a fixed mass gas varies inversely as the pressure changes if the temperature is constant".

  Mathematically;

         P1 V1  = P2 V2

Now, insert parameters and solve;

         P1 x 3.2 = 59 x 5.5

          P1  = 101.4pKa

Answer:

Explanation:

lo8

Answer:

because dark colors attract heat so if your clothes are light you won't be as hot as if you were wearing dark colors.

Answer:

bc dark colored clothing attracts heat

Answer:

the terminator because i did this test

The maximum number of electrons in any orbital is two regardless of the nature of the orbital

Give the other person a Brainliest!

true

Explanation:

Atoms cannot be subdivided, created, or destroyed. Atoms of different elements can combine in simple whole number ratios to form chemical compounds.

Answer:

true

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The expected boiling point ranking of the given compounds is in the order of highest to lowest will be:

• CH3OH

• CH3Cl

• CH4

The boiling point of a compound is influenced by factors such as the strength of intermolecular forces, molecular weight, and branching. Based on these factors, we can rank the given compounds by their expected boiling point:

• CH3OH (methanol) - Methanol has the highest boiling point among the given compounds due to its ability to form strong hydrogen bonds between its molecules. Hydrogen bonding is a strong intermolecular force that requires a significant amount of energy to break, which results in a higher boiling point.

• CH3Cl (chloromethane) - Chloromethane has a lower boiling point than methanol because it only has dipole-dipole interactions and van der Waals forces between its molecules. These intermolecular forces are weaker than hydrogen bonding, so less energy is required to overcome them, resulting in a lower boiling point.

• CH4 (methane) - Methane has the lowest boiling point among the given compounds because it is nonpolar and only has weak van der Waals forces between its molecules. These intermolecular forces are the weakest, requiring the least amount of energy to overcome, which results in the lowest boiling point.

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The ranking of these compounds by boiling point is:

1. CH3OH (Methanol)

2. CH3Cl (Chloromethane)

3. CH4 (Methane)

1. CH3OH (Methanol) - Boiling Point: 65°C

Methanol (CH3OH) is a colorless and flammable liquid that is the simplest alcohol, with a molecular formula of CH3OH. It is used in antifreeze, as a solvent, and as a fuel. It has a boiling point of 65.0 °C.

2. CH3Cl (Chloromethane) - Boiling Point: -24.3°C

Chloromethane (CH3Cl) is a colorless, flammable gas with a sweet odor. It is used as a solvent and a refrigerant, and has a molecular formula of CH3Cl. It has a boiling point of -24.2 °C.

3.CH4 (Methane) - Boiling Point: -161.5°C

Methane (CH4) is a colorless and odorless gas that is the main component of natural gas. It has the chemical formula CH4 and is the simplest hydrocarbon. It is used as a fuel for heating and cooking, and has a boiling point of -164.0 °C.

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Answer:

Brainliest pls

Explanation:

shows the three main types of evolution: divergent, convergent, and parallel evolution.

Divergent: tending to be different or develop in different directions.

Convergent: coming closer together, especially in characteristics or ideas.

Parallel evolution:  implies that two or more lineages have changed in similar ways

Answer:

Option B

Explanation:

As Brønsted-Lowry theory states, acids are the ones that can donate protons.

When a proton is donated, it is released to become medium more acidic.

HCl is a strong acid.

HCl (l) + H₂O (l)  →  H₃O⁺ (aq) +  Cl⁻(aq)

These always reffers to strong acid where the dissociation is 100% completed.

In a weak acid, dissociation is not 100% complete, that's why we have an equilibrium.

HA (l) + H₂O (l)  ⇄  H₃O⁺ (aq) +  A⁻(aq)                   Ka

The specific heat capacity of water is 4.18 J/(g K) and the given amount of water is more than 100 grams. We need to calculate the energy absorbed by the water to reach boiling point when 5.39 × 10^5 J of heat is supplied.

The amount of water used is not provided in the question, therefore, let's first calculate the energy required to raise the temperature of 100g of water from room temperature (25°C) to its boiling point (100°C) using the formula,Q = m × c × ΔTwhere,Q = energy absorbedm = mass of waterc = specific heat capacity of waterΔT = change in temperature of water= 100 - 25 = 75°C (since the water is heated until it just begins to boil)Thus,Q = \(100 g × 4.18 J/(g K) × 75°C= 31350 J= 31.35 kJ\) of energy is required to heat 100g of water from 25°C to 100°C.

Now, let's determine the mass of water using the amount of heat energy supplied:Q =\(m × c × ΔT, where Q = 5.39 × 10^5 Jm = Q / (c × ΔT)= 5.39 × 10^5 J / (4.18 J/(g K) × 75°C)= 204.55 g\)(approx.)Therefore, more than 100 g of water is required to absorb 5.39 × 10^5 J of heat to reach its boiling point.

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The standard enthalpy change for reaction (3) is 117.1 kJ.

The standard enthalpy change for reaction (3) can be calculated by using the enthalpy changes of reactions (1) and (2) and applying Hess's Law.

To do this, we need to manipulate the given equations so that the desired reaction (3) can be obtained.

First, we reverse reaction (1) to get the formation of C2H4(g) from C2H6(g):

C2H4(g)C2H6(g) ΔH° = -52.3 kJ

Next, we multiply reaction (2) by 2 and reverse it to obtain 2 moles of C2H6(g) reacting to form 3 moles of H2(g):

2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

Now, we add the two modified equations together:

C2H4(g)C2H6(g) ΔH° = -52.3 kJ
2C2H6(g)2C(s) + 3H2(g) ΔH° = 169.4 kJ

When adding these equations, the C2H6(g) on the left side cancels out with the C2H6(g) on the right side, leaving us with the desired reaction (3):

C2H4(g) + H2(g)C2H6(g) ΔH° = -52.3 kJ + 169.4 kJ = 117.1 kJ

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Answer:

-1

Explanation:

Answer:

159g

Explanation:

Copper (I) sulfide is formed by the chemical reaction between copper and sulfur. Copper is a limiting reagent that results in the formation of 190.26 grams of copper(I) sulfide.

A limiting reagent is defined as the reactant that gets completely utilized in the reaction and affects the amount of the product formation. On the contrary, the excess reagent is present in more amounts.

Given,

Mass of copper = 127 gm

Mass of sulfur = 41 gm

Moles of copper:

n = mass ÷ molar mass

n = 127 ÷ 63.546

n = 1.99

Moles of sulfur:

n = 41 ÷ 32.065

n = 1.27

The reaction is shown as:

Cu + S → CuS

Here, 9 g of sulfur remains unreacted and hence is an excess reagent, and copper being consumed is a limiting reagent.

Here, 1 mole of copper reacts to form 1 mole of copper sulfide hence, 1.99 moles of Cu produces, 1.99 moles of copper sulfide.

Mass of CuS is calculated as:

Mass = moles × molar mass

Mass = 1.99 mol × 95.611 g/mol

= 190.26 grams

Therefore, 127 gm of copper and 41 gm of sulfur produces 190.26 grams of copper sulfide.

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Answer:

In this reaction, the hydrogen from the HCl is taken up by ammonia.

NH₃ (aq) + HCl (aq)  ----> NH₄⁺ (aq)  + Cl⁻ (aq)

In this reaction, ammonium (NH₄⁺) is the acid and the chorine ion (Cl⁻) is the base.

When acid and base combine then formation of salt take place and the reaction is called neutralization reaction. Hence the balanced equation is NH₃(aq) + HCl(aq)  \(\rightarrow\)NH₄Cl

Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side. The principle behind the balanced equation is the conservation of mass that is mass can neither be created nor be destroyed.

Since, HCl is acid and NH₃ is base so H⁺ will be transferred from acid to base

The balanced equation is

NH₃(aq) + HCl(aq)  \(\rightarrow\) NH₄⁺(aq)  + Cl⁻ (aq)

Cl⁻ and NH₄⁺  combine to form salt ammonium chloride

Here NH₃  is Lewis base as it can donate its lone pare of electron to H⁺ coming from acid and HCl is a Bronsted acid as it give H⁺.

Hence the balanced equation is

NH₃(aq) + HCl(aq)  \(\rightarrow\)NH₄Cl

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To solve this problem, we need to first calculate the number of moles of each reactant given and then determine which reactant is the limiting reactant.

A) Calculation of the limiting reactant:

First, we need to convert the given masses of C3H6 and NO to the corresponding number of moles:

Molar mass of C3H6 = 3(12.01 g/mol) + 6(1.01 g/mol) = 42.08 g/mol

Molar mass of NO = 14.01 g/mol + 16.00 g/mol = 30.01 g/mol

Number of moles of C3H6 = 21.6 g / 42.08 g/mol = 0.514 mol

Number of moles of NO = 21.6 g / 30.01 g/mol = 0.720 mol

Using the balanced equation, we can see that the stoichiometric ratio of C3H6 to NO is 1:6. This means that for every 1 mole of C3H6, 6 moles of NO are needed to react completely. Therefore, the limiting reactant is the reactant that is completely consumed in the reaction, which is the reactant that is present in the smallest amount relative to the stoichiometric ratio.

From the above calculations, we can see that there are only 0.514/1 = 0.514 moles of C3H6 for every 0.720/6 = 0.120 moles of NO. This means that NO is the limiting reactant.

B) Calculation of the excess reactant:

To calculate the excess reactant, we need to determine how much of the non-limiting reactant remains after the reaction has gone to completion. Since NO is the limiting reactant, all of the C3H6 will react and there will be some NO left over.

From the balanced equation, we can see that for every mole of C3H6, 6 moles of NO are required. Therefore, the amount of NO required to react with all of the C3H6 is:

0.514 mol C3H6 × 6 mol NO/mol C3H6 = 3.084 mol NO

The amount of NO that is in excess is:

0.720 mol NO - 3.084 mol NO = -2.364 mol NO

Since we cannot have a negative amount of a substance, this means that there is no excess C3H6 left over.

C) Calculation of the mass of C3H3N produced:

From the balanced equation, we can see that 4 moles of C3H3N are produced for every mole of C3H6 that reacts. Therefore, the number of moles of C3H3N produced is:

0.514 mol C3H6 × 4 mol C3H3N/mol C3H6 = 2.056 mol C3H3N

The mass of C3H3N produced can be calculated from the number of moles as follows:

Mass of C3H3N = number of moles of C3H3N × molar mass of C3H3N

Mass of C3H3N = 2.056 mol × (3(12.01 g/mol) + 3(1.01 g/mol) + 1(14.01 g/mol)) = 256.54 g

Therefore, 256.54 g of C3H3N are produced.

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Answer:

it have been already balanced

2H2 + O2 = 2H2O.

The statements that are true are I. All redox reactions with positive emfs are spontaneous and III. A spontaneous redox reaction will have a cathode reaction that has a more negative reduction potential than the anode.

All redox reactions with positive emfs are spontaneous because a positive emf (electromotive force) indicates a release of energy, which drives the reaction spontaneously.

If a redox reaction is spontaneous, it doesn't necessarily mean it is fast. Spontaneity is related to thermodynamics, while reaction speed is related to kinetics.

A spontaneous redox reaction will have a cathode reaction that has a more negative reduction potential than the anode because the cathode is where reduction occurs, and the reaction with a more negative reduction potential proceeds as oxidation, releasing energy and making the overall redox reaction spontaneous.

Hence, the correct statements are I and III.

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Graphite is not an organic compound because it consists of pure carbon bonded in sheets, unlike the other three compounds (ethanol, glucose, and octane) that contain carbon atoms bonded to hydrogen or oxygen atoms.

Organic compounds are compounds that contain carbon atoms bonded to other elements such as hydrogen, oxygen, nitrogen, or other carbon atoms. Ethanol (C2H6O), glucose (C6H12O6), and octane (C8H18) are all examples of organic compounds because they contain carbon atoms bonded to hydrogen or oxygen atoms.

Ethanol is a type of alcohol commonly found in alcoholic beverages and is produced through the fermentation of sugars. Glucose is a simple sugar and is a primary source of energy for living organisms. It is a key component in various biological processes and is a building block for more complex carbohydrates. Octane is an organic compound belonging to the class of hydrocarbons known as alkanes and is commonly found in gasoline.

On the other hand, graphite is a form of carbon that consists of pure carbon atoms bonded together in sheets. It is a non-metallic element and is considered an inorganic compound. Graphite is known for its lubricating properties and its use as a conductor of electricity in various applications, such as in pencils and electrical devices.

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Answer:

the applied force is greater than the force of friction

Explanation: