A solution contains 0.05 M hydrobromic acid (HBr). The equilibrium constant is pK, = -8.7. a. What is the K.? (Hint: See equation 5-34 on page 230 in the Davis textbook.) b. Why is this a strong acid?

Answer:

H2+Cl2--->2 HCl

Explanation:

Hydrogen +Chloride gives out 2 moles of HCl

A) CH3-NH2: 2 lone pairs; B) H2O : 2 lone pairs ; C) H2O2 : 4 lone pairs D) HBr : 3 lone pairs ; E) XeF4 : 0 lone pairs

A) CH3-NH2: This is methylamine. It has 3 hydrogen atoms attached to  carbon and 2 lone pairs of electrons on the nitrogen atom. Total = 2 lone pairs

B) H2O: This is water. It has 2 hydrogen atoms and 1 oxygen atom, with 2 lone pairs of electrons on oxygen atom. Total = 2 lone pairs

C) H2O2: This is hydrogen peroxide. It has 2 hydrogen and 2 oxygen atoms. Both oxygen atoms have 2 lone pairs of electrons each. Total = 4 lone pairs

D) HBr: This is hydrogen bromide. It has 1 hydrogen atom and 1 bromine atom. The bromine atom has 3 lone pairs of electrons. Total = 3 lone pairs

E) XeF4: This is Xenon Tetrafluoride. Xenon has 8 valence electrons, and each fluorine has 7 valence electrons. Xenon is surrounded by 4 fluorine atoms, with no lone pairs of electrons on xenon atom. Total = 0 lone pairs.

To know more about lone pairs, refer

https://brainly.com/question/25192438

#SPJ4

Answer:

1. P4 + 6Cl2 → 4PCI3; already balanced

2. 25.5 moles Cl2

Explanation:

1. The chemical equation for the reaction of phosphorus with chlorine gas to produce phosphorus trichloride is:

P4 + 6Cl2 → 4PCI3

The equation is already balanced

2. The equation shows that 6 moles of chlorine gas are required to produce 4 moles of phosphorus trichloride.

set up a proportion:

6 moles Cl2 / 4 moles PCI3 = x moles Cl2 / 17 moles PCI3

solve for x:

x = (6 moles Cl2 / 4 moles PCI3) x 17 moles PCI3

x = 25.5 moles Cl2

Therefore, 25.5 moles of chlorine gas are required to produce 17 moles of phosphorus trichloride.

Answer:

25.5 moles of Cl₂ required

Explanation:

2P + 3Cl₂ --> 2PCl₃

Since, the stoichiometry (molar ratio) of the reaction is 2 : 3 : 2,

thus, number of moles of Cl₂ = 3/2 × number of moles of PCl₃

∴ number of moles of Cl₂ required is 25.5 moles

Answer:

The Correct IUPAC name is H3C - CH (CH3) - CH (C2H5) - (CH2)2 - CH3 Class 11

Explanation:

ye thiss right it only show this for me like or star or comment if right all is good idc tell me if u got it

A reagent that could be added to a mixture of \(Ag^+\) and \(Cu^{2+}\) to separate this two species is hydrochloric acid (HCl).

A separation technique can be defined as a technique that is used to separate (convert) two or more mixture and solution of chemical substances into distinct products such as solutes, chemical compounds or elements.

In this scenario, a reagent that could be added to a mixture of \(Ag^+\) and \(Cu^{2+}\) to separate this two species is hydrochloric acid (HCl). As HCl is added to this mixture, a white precipitate would be formed by silver ions (\(Ag^+\)) while the copper ion (\(Cu^{2+}\)) would form a maroon precipitate.

In conclusion, the above confirmation test should be done when hydrochloric acid (HCl) is added to a mixture of \(Ag^+\) and \(Cu^{2+}\) as a reagent.

Read more on separation technique here: brainly.com/question/4980962

In the context of atomic orbital (AO) wavefunctions, the terms "radial node" and "nodal plane" refer to different aspects of the wavefunction's behavior.

A radial node is a region in the AO wavefunction where the probability of finding an electron is zero along the radial direction. In other words, it represents a spherical shell where the electron is unlikely to be found. The number of radial nodes is determined by the principal quantum number (n) of the orbital. For example, the 2s orbital has one radial node, while the 2p orbital has no radial nodes.

On the other hand, a nodal plane is a flat plane within the AO wavefunction where the probability of finding an electron is zero along a particular direction. It represents a surface that divides the orbital into two regions of opposite phases. The number of nodal planes is determined by the angular quantum numbers (l and m) of the orbital. For example, the 2s orbital has no nodal planes, while the 2p orbital has one nodal plane (the xz or yz plane).

Radial nodes arise from the radial part of the wavefunction because they depend on the distance from the nucleus. The radial part determines the distribution of the electron density as a function of distance, and the nodes correspond to regions where the density drops to zero.

On the other hand, nodal planes arise from the angular part of the wavefunction because they depend on the orientation and shape of the orbital. The angular part describes the angular distribution of the electron density around the nucleus, and the nodal planes correspond to regions where the phase of the wavefunction changes sign.

In summary, radial nodes are related to the distance from the nucleus and arise from the radial part of the wavefunction, while nodal planes are related to the orientation and shape of the orbital and arise from the angular part of the wavefunction. The 2s orbital has one radial node and no nodal planes, while the 2p orbital has no radial nodes and one nodal plane.

learn more about radial node here

https://brainly.com/question/31829965

#SPJ11

Answer:

10 g

Explanation:

Right from the start, just by inspecting the values given, you can say that the answer will be  

10 g

.

Now, here's what that is the case.

As you know, a substance's specific heat tells you how much heat is needed to increase the temperature of  

1 g

of that substance by  

1

∘

C

.

Water has a specific heat of approximately  

4.18

J

g

∘

C

. This tells you that in order to increase the temperature of  

1 g

of water by  

1

∘

C

, you need to provide  

4.18 J

of heat.

Now, how much heat would be required to increase the temperature of  

1 g

of water by  

10

∘

C

?

Well, you'd need  

4.18 J

to increase it by  

1

∘

C

, another  

4.18 J

to increase it by another  

1

∘

C

, and so on. This means that you'd need

4.18 J

×

10

=

41.8 J

to increase the temperature of  

1 g

of water by  

10

∘

C

.

Now look at the value given to you. If you need  

41.8 J

to increase the temperature of  

1 g

of water by  

10

∘

C

, what mass of water would require  

10

times as much heat to increase its temperature by  

10

∘

C

?

1 g

×

10

=

10 g

And that's your answer.

Mathematically, you can calculate this by using the equation

q

=

m

⋅

c

⋅

Δ

T

, where

q

- heat absorbed/lost

m

- the mass of the sample

c

- the specific heat of the substance

Δ

T

- the change in temperature, defined as final temperature minus initial temperature

Plug in your values to get

418

J

=

m

⋅

4.18

J

g

∘

C

⋅

(

20

−

10

)

∘

C

m

=

418

4.18

⋅

10

=

10 g

Answer:

C would be the nervous system reacting

If you wanted to know about the other answers:

A and D are the circulatory system since it's transporting stress hormones through the blood and the heart rate speeds up

B is the muscular and skeletal system since they are the ones that make your body move

The pressure of atmospheres of the argon gas in  the given incandescent light bulb is 1. 1 .

The pressure of atmospheres can be found by the formula :

= ( Number of moles x Universal gas constant x Temperature in Kelvin ) / Volume of gas

Number of moles = 3.4 x 10 ⁻³

Universal gas constant = 0. 082

Temperature in Kelvin = 20 + 273. 15 = 293. 15 K

Volume of gas : 75 x 10 ⁻³

The pressure of atmospheres of the argon gas is:

= ( 3.4 x 10 ⁻³ x 0. 082 x 293. 15 ) / 75 x 10 ⁻³

= 1. 1 atm

Find out more on pressures of atmospheres at https://brainly.com/question/19587559

#SPJ1

Explanation:

guess

exothermic because of the heat

Answer:.

Explanation:

Answer:

Radio waves are a type of electromagnetic radiation best-known for their use in communication technologies, such as television, mobile phones and radios.

Answer:

uvo 8hih8hjfiuwubosbwbhp0heg

Answer:

A) He is taking lot’s of notes.

Explanation:

Conflict resolution refers to the process that helps the two parties involved in a communication to turn towards a peaceful resolution when a dispute arises. Conflicts are very obvious to occur among the people working together. Around the professional world, conflicts may emerge among the co-workers, supervisors, and among the management team. The process that helps to resolve the issues is termed to be the conflict resolution process.

In the given situation, the conflict resolution process of resolving the issue would be option A. All the other options would lead towards the emergence of conflict or misunderstanding respectively.

Answer:

A.

He is taking lots of notes.

Explanation:

I took the practice on edge.2020

Answer:

Barium

Explanation:

I think that's the answer

The element in period 6 with 2 valence electrons is Barium.

Learn more at: https://brainly.com/question/24089206?referrer=searchResults

at the given temperature, HI will decompose into H2 and I2.

Given that the following reaction has an equilibrium constant value of

K = 46 at 783K: H2 (g) + l2 (g) = HI (g).

Initial pressures were given to be 55kPa for both hydrogen and iodine and 78kPa for hydrogen iodide which is at equilibrium. In this problem, Qp is the reaction quotient for pressures at the given instant. Qp has the same expression as Kp, but with initial pressures instead of equilibrium pressures.

Qp = p(HI) / [p(H2) . p(I2)] = 78 / [55 . 55] = 0.0241

K is the equilibrium constant and Q is the reaction quotient.Q is less than K. This implies that the reaction quotient will increase to match the equilibrium constant.

As a result, the reaction will shift forward to produce more HI. Thus, at the given temperature, HI will decompose into H2 and I2.

learn more about equilibrium constant here

https://brainly.com/question/3159758

#SPJ11

HCl can be used to separate the components of Mixture C, as its pKa of -7 is much lower than that of m-toluic acid (pKa of 4.27). After the extraction, the aqueous layer would contain the sodium salt of m-toluic acid and 3-cyanophenol.

Cynaphenol is a dietary supplement derived from the medicinal herb Cynanchum wilfordii. It is a powerful antioxidant that has been used for centuries in traditional Chinese medicine to treat a variety of ailments, including diabetes, arthritis, and heart problems. Cynaphenol contains a compound called cynarine, which helps to boost the body’s natural production of enzymes that fight inflammation.

To know more about Cynaphenol
https://brainly.in/question/43447861
#SPJ1

The molar mass of the gas is "64.23g/mol".

Molar mass is the weight in grams of one mole of a substance. Every element has a distinct molar mass of their own. For instance, the molar mass of magnesium is 24.3050 g/mol and that of carbon is 12.011 g/mol.

The sum of the atomic masses of all the atoms in a molecule or compound in one mole is the substance's molar mass. The atomic masses of all the atoms that make up a molecule or compound are added together to form the substance's molecular mass.

In starting, the volume of the gas can be calculated by using ideal gas equation.

For 1 mole of a gas, n = 1, R = 0.0823 \(l.atm/mol.K\)

So,

PV=nRT

V=nRT/P

\(\\=\frac{1*0.0823*298}{2.75} \\=8.918\)

And Molar mass

m= d*V

\(\\=7.2*8.918\\=64.2096\)

Learn more about molar mass

brainly.com/question/12127540

#SPJ4

Decreasing the TBCl concentration will not affect the rate constant in this experiment. The rate constant is determined by the specific reaction and temperature conditions and is independent of the reactant concentrations.

The rate constant (k) is a proportionality constant that relates the rate of a reaction to the concentrations of the reactants. However, the rate constant itself is not affected by the concentrations of the reactants. It is determined by the specific reaction and temperature conditions.

The rate of a chemical reaction can be expressed using the rate equation, which typically includes the concentration terms for the reactants raised to certain powers.

These powers, known as reaction orders, can be determined experimentally. However, the rate constant is a separate factor in the rate equation and is not dependent on the reactant concentrations.

By decreasing the TBCl concentration, the rate of the reaction may be affected, as the rate is directly proportional to the reactant concentrations.

However, the rate constant itself remains unchanged. The rate constant is influenced by factors such as temperature, presence of catalysts, and the nature of the reacting species, but not by the concentrations of the reactants.

Therefore, decreasing the TBCl concentration will not affect the rate constant in this experiment.

Learn more about reaction here:

https://brainly.com/question/24278847

#SPJ11

The equilibrium chemical equation Rb(s) + Cl₂(g) RbCl₂(s) has the appropriate product(s) for the reactivity of rubidium.

Magnesium chloride (MgCl₂) is created when the elements magnesium (Mg) and chlorine (Cl₂) mix. As a result, the reaction is a combination reaction, and the equation that balances it is as follows: Mg(s)+Cl₂(g)→MgCl₂(s)

For instance, salt chlorate, a typical household bleach, is created when chlorine, Cl₂, interacts with sodium hydroxide, NaOH, in a disproportionation process. Sodium and chlorine combine to make sodium chloride, a common table salt.

To know more about chemical equation visit :
brainly.com/question/30087623
#SPJ1

The literature provides the viscosity values of 1-pentanol and 1-propanol at 25 degrees Celsius.

To determine the viscosity of 1-pentanol and 1-propanol at 25 degrees Celsius, we can refer to the literature, such as scientific journals, textbooks, or databases that provide data on the physical properties of various substances. These sources often provide tables or graphs that list the viscosity values of different compounds at different temperatures.

By consulting the literature, we can find the specific viscosity values of 1-pentanol and 1-propanol at 25 degrees Celsius. The viscosity is typically expressed in units of centipoise (cP) or millipascal-second (mPa·s). These values represent the resistance of the liquids to flow and give us an indication of their internal friction.

It is important to note that the viscosity of substances can vary depending on factors such as purity, pressure, and the presence of impurities. Therefore, it is essential to refer to reliable and up-to-date literature sources to obtain accurate viscosity values for 1-pentanol and 1-propanol at 25 degrees Celsius.

To know more about viscosity click here:

https://brainly.com/question/30263409

#SPJ11

Answer: 0on

Explanation:

Answer:

6,570,000

Rounded to 3 significant figures. The figures therefore are 6, 5, 7

Firstly, we will find that 2.39 g of TlOH coordinates with the following:

2.39 g / 190.87 g/mol = 0.0125 moles

The concentration of hydroxide ions in the solution can be calculated by:

[OH-] = 0.0125 moles / 1 L = 0.0125 M

Now, pH = -log[OH-] = -log(0.0125) = 1.907

So, the pH of the solution containing 2.39 g TlOH per liter is 1.907.

A solution can be either acidic or basic. Their pH values can determine this. The pH scale ranges from 0 to 14. A solution with a pH of 7 is considered to be neutral. A solution with a pH less than 7 is acidic, while a solution with a pH greater than 7 is basic.

As the hydrogen ion concentration rises, the pH decreases, and the solution becomes more acidic. Contrarily, as the hydrogen ion concentration drops, the pH increases, and the solution becomes more basic.

To know more about alkali, visit here:

https://brainly.com/question/18153051

#SPJ4

The pH of the solution containing 2.39 g TlOH per liter is 1.907.

A solution can be either acidic or basic. Their pH values can determine this. The pH scale ranges from 0 to 14. A solution with a pH of 7 is considered to be neutral. A solution with a pH less than 7 is acidic, while a solution with a pH greater than 7 is basic.

As the hydrogen ion concentration rises, the pH decreases, and the solution becomes more acidic. Contrarily, as the hydrogen ion concentration drops, the pH increases, and the solution becomes more basic.

Firstly, we will find that 2.39 g of TlOH coordinates with the following:

2.39 g / 190.87 g/mol = 0.0125 moles

The concentration of hydroxide ions in the solution can be calculated by:

[OH-] = 0.0125 moles / 1 L = 0.0125 M

Now, pH = -log[OH-] = -log(0.0125) = 1.907

So, the pH of the solution containing 2.39 g TlOH per liter is 1.907.

To know more about pH of solution, visit here:

https://brainly.com/question/172153

#SPJ4

Answer:

Liquids have more kinetic energy than solids. When a substance increases in temperature, heat is being added, and its particles are gaining kinetic energy. Because of their close proximity to one another, liquid and solid particles experience intermolecular forces. These forces keep particles close together.

Explanation:

hope it helps U

The amount of heat absorbed to raise the temperature of 435 grams of water at 1 atm from 25°C to its boiling point, 100°C, is approximately 1.4 × 10^5 joules

What is specific heat?

Specific heat is the amount of heat energy required to raise the temperature of a substance by one unit of temperature per unit of mass. It is a physical property that helps to characterize a substance and is typically measured in units of joules per gram per degree Celsius (J/g°C) or calories per gram per degree Celsius (cal/g°C).

The amount of heat absorbed to raise the temperature of a substance can be calculated using the formula:

Q = mcΔT

where Q is the amount of heat absorbed (in joules), m is the mass of the substance (in kilograms), c is the specific heat capacity of the substance (in joules per kilogram per degree Celsius), and ΔT is the change in temperature (in degrees Celsius).

Substituting the given values, we get:

m = 435 grams = 0.435 kg

ΔT = 100°C - 25°C = 75°C

The specific heat capacity of water is 4.184 J/g°C. We can convert this to joules per kilogram per degree Celsius (J/kg°C) by dividing by 1000:

c = 4.184 J/g°C ÷ 1000 = 4.184 J/kg°C

Substituting these values, we get:

Q = (0.435 kg) × (4.184 J/kg°C) × (75°C)

Q = 140,089.2 J

Therefore, the amount of heat absorbed to raise the temperature of 435 grams of water at 1 atm from 25°C to its boiling point, 100°C, is approximately 1.4 × 10^5 joules. The answer closest to this value is option (B).

To know more about Boiling point visit :-

https://brainly.com/question/40140

#SPJ9

Answer:

The answer to question 3 should be C. Summarizing the results.
The answer to question 4 should be D. Comparing data from the experiment to the prediction of the hypothesis.

Explanation:

Answer: For question 3 Your answer will be C

For question 4 your answer will be D

Explanation:

this is because this part of a scientific hypothesis and cycle.

In the reaction 2 Au(OH)3 + 6 HI, 2 Au, 3 I2, and 6 H2O are produced. Every gold atom acquires three electrons, while every iodine atom loses one. The oxidation-reduction reaction involves the movement of six electrons in total.

Iodine, on the other hand, is in group 17 (main group 7), which indicates that it possesses seven valence electrons. Iodine will form an anion, or negatively charged ion, I because it is simpler for it to obtain an electron than it is to lose seven.

Let's have a look at the next imbalanced redox reaction.

Au(OH)₃+HI⇒Au+I₂+H₂O

The reduction half-reaction is:

Au⁺³ + 3 e⁻ ⇒ Au

Each gold atom gains three electrons, as can be seen.

The oxidation half-reaction is:

2 I⁻ ⇒ I₂ + 2 e⁻

Each iodine atom loses one electron, as can be seen.

By multiplying the reduction by two, the oxidation by three, and adding them, we can make the equation equal. Six electrons were exchanged in all.

2(Au⁺³ + 3e⁻ ⇒ Au)

3(2I⁻ ⇒ I₂+2e⁻)

2Au⁺³+6I⁻ ⇒ 2Au+3 I₂

The balanced redox reaction is:

2Au(OH)₃ + 6HI ⇒ 2Au + 3I₂ + 6H₂O.

To know more about oxidation-reduction visit:-

https://brainly.com/question/13699873

#SPJ1

Answer:

A. O

B. R

Explanation: