The kinetics and equilibrium of the decomposition of hydrogen iodide have been studied extensively:2HI(g) ⇆ H₂(g) + I₂(g) (c) Calculate ΔH°rnx for HI decomposition from ΔH°f values.

Answer:

Potential energy is the stored energy in an object or thing, while kinetic energy is the energy which an object contains because of a particular motion.

Explanation:

Potential energy is energy that is stored for example a wind up toy, it has energy but in order for you to get kinetic energy, it has to move. So kinetic energy is moving energy.

The difference is that potential is stored and kinetic is moving energy.

The change of enthalpy for the given reaction is equal to -6387 KJ.

Enthalpy can be defined as the sum of internal energy and the product of volume and Pressure, expressed as shown below:

H = U + PV

The change in enthalpy between the beginning and final states can be expressed as:

ΔH = ΔU + ΔPV

Given reactions with enthalpy change are shown below:

2Al (s) + 6HCl (aq) → 2AlCl₃ (aq) + 3H₂ (g)      }×1        ΔH₁ = -1049 kJ

HCl (g) → HCl (aq)                                            } ×6       ΔH₂ = -74.8 kJ/mol

H₂ (g) + Cl₂ (g) → 2HCl (g)                                }× 3      ΔH₃ = -1845. kJ/mol

AlCl₃ (aq)  → AlCl₃ (s)                                      }× 2         ΔH₄ = +323. kJ/mol

\(\triangle H^o_f =1\times \triangle H_1 +6\times \triangle H_2+3\times \triangle H_3+2\times \triangle H_4\)

\(\triangle H^o_f =1\times (-1049) +6\times (-74.8)+3\times (-1845)+2\times (+323)\)

\(\triangle H^o_f =-6387 KJ\)

Therefore, the change of enthalpy for the reaction of the formation of aluminum chloride is -6387 KJ.

Learn more about enthalpy change, here:

brainly.com/question/4526346

#SPJ1

Answer: The four inner planets have shorter orbits, slower spin, no rings, and they are made of rock and metal. The four outer planets have longer orbits and spins, a composition of gases and liquids, numerous moons, and rings

Explanation:

pls mark as brainlist by the way we are in the same school  :)

Answer:159.7grams

Explanation:

(55.85)2+(16)3

159.7grams

Answer:

The correct answer for plato/edmentum is C (159.7g)

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, the pressure in atm and torr is 148.2 atm and 1,12,632 torr respectively.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles.

pressure= 14.82 mpa

              = 14.82 × 10⁶ pa

1 atm = 10⁵ pa

1 Pa = 1/10⁵ atm

pressure= 14.82 × 10⁶× 1/10⁵ atm

              = 148.2 atm

1 atm = 760 torr

pressure= 148.2 ×760 torr

              = 1,12,632 torr

Therefore, the pressure in atm and torr is 148.2 atm and 1,12,632 torr respectively.

To learn more about ideal gas equation, here:

https://brainly.com/question/14826347

#SPJ1

Answer:

A. Carbon and oxygen are chemically bonded in it.

Explanation:

I saw someone with the exact question and they said A so yea ♥

At STP (Standard Temperature and Pressure), iodine is present in a crystalline form, whereas fluorine is in a gaseous form. Iodine is also soluble in ethanol and produces a tincture of iodine. Typically, a 2% iodine mass is present in a tincture of iodine.

For such more question on intermolecular

https://brainly.com/question/12243368

#SPJ8

At STP, iodine (I2) is a solid crystal and fluorine (F2) is a gas. A sample of I2 at STP is held together by van der Waals forces, which are weaker intermolecular forces. On the other hand, a sample of F2 at STP is held together by much stronger intermolecular forces than I2 due to its smaller size.

Therefore, F2 has stronger intermolecular forces than I2. It can be explained in a long answer as follows:At standard temperature and pressure, iodine (I2) is a solid crystalline substance. Its physical state is a solid because the intermolecular forces that bind the iodine molecules together are weak van der Waals forces. These forces are much weaker than chemical bonds, and they hold molecules in a condensed phase like a liquid or a solid. The forces of attraction between the iodine atoms in I2 are much weaker than the forces of attraction between the fluorine atoms in F2.

As a result, the boiling point of I2 is much lower than the boiling point of F2. F2 is a gas at STP since it is held together by much stronger intermolecular forces than I2 due to its smaller size. Fluorine has an electron density that is spread out over a larger area than iodine, making it more polarizable. The larger polarizability leads to stronger instantaneous dipoles and, as a result, stronger London dispersion forces. Since intermolecular forces are responsible for determining the physical state of a substance, F2 is a gas, whereas I2 is a solid. As a result, F2 has stronger intermolecular forces than I2.

To know more about intermolecular forces visit:-

https://brainly.com/question/31797315

#SPJ11

Answer:

your answer would be C.

Explanation:

Machines make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied, or changing the direction in which the force is applied. sorry if im wrong.

Answer:

B. Ca

Explanation:

Let's look at the electron configurations of all four elements (I am going to write it in noble gas configuration to make it simpler):

Mg electron configuration: [Ne]3s2

Ca electron configuration: [Ar]4s2

Ar electron configuration: [Ar]

K electron configuration: [Ar] 4s1

We notice that Ca has two electrons in the 4s sublevel, which satisfies what the question is asking for.

The answer is thus B. Ca.

Answer:

39

Explanation:

add em up

In the distillation of a pure material, all of the pure material not vaporize once the boiling point is reached because more heat would need to be added to the distillate in order to vaporize the liquid from its boiling point.

During distillation, the process of vaporizing a liquid and collecting the resulting vapor as a purified substance, it is important to consider the energy requirements involved.

When a liquid reaches its boiling point, it undergoes a phase change from the liquid phase to the gas phase. This phase change requires the input of energy in the form of heat. The heat breaks the intermolecular forces holding the liquid molecules together, allowing them to transition into the gas phase.

The heat required to vaporize a liquid is not solely determined by the boiling point. The heat required to convert a liquid into a gas is known as the heat of vaporization, and it varies depending on the substance.

When distilling a liquid, such as water, the heat of vaporization must be supplied to convert the liquid into vapor. This energy is absorbed by the liquid, and it is essential to provide continuous heating to maintain the distillation process.

As the liquid is heated and reaches its boiling point, vaporization begins. However, the rate at which the liquid vaporizes depends on the amount of heat being supplied. If the heat input is insufficient, the vaporization process will be slower, and not all of the liquid will vaporize at once.

To ensure the complete vaporization of a liquid during distillation, a sufficient amount of heat must be continuously applied to the system. This allows the heat of vaporization to be continually supplied to the liquid, facilitating the conversion of the entire liquid into vapor.

If the heat input is insufficient, the vaporization process will be slower, and the liquid may not vaporize all at once. Providing adequate and continuous heating is crucial to ensure the complete conversion of the liquid into vapor during distillation.

To know more about distillation here

https://brainly.com/question/31829945

#SPJ4

Answer:

the molecular formula of Ozone is O_3.

Answer: O₃

Explanation:

The chemical formula of ozone is O3. In the earth's stratosphere, ozone is formed from a two-step reactive process. First, sunlight breaks apart an oxygen molecule (O2 you'll recall) into two oxygen atoms. In the second step, these oxygen atoms collide with another oxygen atom to make ozone.

The statement that identifies an oxidation-reduction reaction is a reaction in which oxidation numbers change (option C).

A redox or oxidation-reduction reaction is a chemical reaction in which some of the atoms have their oxidation number changed.

In a chemical reaction that involves oxidation and reduction, the oxidation number of the involved ions either decreases or increases.

Therefore, the statement that identifies an oxidation-reduction reaction is a reaction in which oxidation numbers change.

Learn more about redox reaction at: https://brainly.com/question/13293425

#SPJ1

C. the denser the plants the better.

Answer:

C

Answer: Plants with higher density of the bacteria on their roots have increased rates of survival reproduction

Explanation:

The biggest obstacle to getting cooperation for a clean up of the river is the lack of awareness among the public about the negative impacts of the pollutants and waste on the environment and public health.

A river cleanup project aims at eliminating pollutants and waste that harm the ecosystem and water quality, however, if the public is not aware of the negative impact of these pollutants on the environment, they may not view the project as a priority. Hence, the first and most significant step towards securing public cooperation is to raise awareness about the importance of a clean and healthy environment. Environmental groups, schools, and local government officials can take up the responsibility of informing the public about the risks associated with water pollution, the negative impacts on health, aquatic life, and the overall ecosystem. To promote engagement and participation, officials can organize environmental campaigns, rallies, and workshops to mobilize the public to participate in the cleanup efforts. Overall, awareness and education can play a vital role in mobilizing the public to participate in cleanup efforts to preserve and protect the environment.

To Learn more about obstacle. Click this!

brainly.com/question/20681759

#SPJ11

The reaction is exothermic and therefore the temperature of the water bath go up.

A chemical reaction involves the movement of energy to or from the environment.

An exothermic reaction occurs when energy is transmitted to the environment, increasing temperature.

As a result, the bath's temperature will increase.

The solution is hence "out."

We know the released energy = work + heat supplied to the bath

Clearly,

heat = energy - work

= (390 - 117) kJ

= 273 kJ

Thus, when the energy is absorbed by the system, a positive sign is assigned.

Therefore, the reaction absorb energy.

To learn more about exothermic reaction visit:

brainly.com/question/2924714

#SPJ4

Answer:

1.053×10²⁴ atoms of gold

Explanation:

Hello,

Gold nugget are usually the natural occurring gold and they contain 85% - 90% weight of pure gold.

In this question, we're required to find the number of atoms in 344.75g of a gold nugget.

We can use mole concept relationship between Avogadro's number and molar mass.

1 mole = molar mass

Molar mass of gold = 197 g/mol

1 mole = Avogadro's number = 6.022 × 10²³ atoms

Number of mole = mass / molar mass

Mass = number of mole × molar mass

Mass = 1 × 197

Mass = 197g

197g is present in 6.022×10²³ atoms

344.75g will contain x atoms

x = (344.75 × 6.022×10²³) / 197

X = 1.053×10²⁴ atoms

Therefore 344.75g of gold nugget will contain 1.053×10²⁴ atoms of gold

As per the atoms the 344.5 g of gold nuggets have a 1.05x10 and have a power of 24 atoms.  

Learn more about the atoms are there.

brainly.com/question/18510197.

Answer:

When chlorine (Cl 2 ) gas is passed through an aqueous solution of potassium iodide (KI), the products formed are solid iodine (I2) and potassium chloride (KCl). This is a displacement reaction in which the less reactive iodine in potassium iodide is displaced by the more reactive chlorine. The equation can be written as:

2KI(aq)+Cl2(g)→2KCl(aq)+I2 (s)

The given statement  "Consist of alternating layers of marine rocks and non-marine rocks" will be false. Because, the deposition of sedimentary rocks is influenced by various factors such as geological processes, sediment sources, and depositional environments.

The presence of alternating layers of marine and non-marine rocks depends on the specific geological history and depositional conditions of a particular region.

Sedimentary rocks can be formed in marine environments (such as oceans, seas, and estuaries) or non-marine environments (such as lakes, rivers, deserts, and glaciers). The type of sediment and the characteristics of the depositional environment determine the composition of the sedimentary rocks formed.

In some cases, sedimentary sequences may exhibit alternating layers of marine and non-marine rocks. This can occur, for example, in regions where sea levels fluctuated over time, leading to periods of marine deposition followed by periods of non-marine deposition as the shoreline shifted. This pattern can result in the development of transgressive-regressive sequences, which show alternating marine and non-marine layers.

To know more about marine rocks here

https://brainly.com/question/7112506

#SPJ4

Precipitates are insoluble ionic solid products of a reaction, formed when certain cations and anions combine in an aqueous solution. The determining factors of the formation of a precipitate can vary.

Answer:

1. A

2. B

3. A

4. B

5. B

6.C

7. B

8. A

Explanation:

SnO₂ + H₂ + energy → Sn + H₂0

The reaction is between Tin(iv) oxide and hydrogen gas to form tin and water molecules.

Notice the reaction is not balance therefore let us balance the equation. To balance the equation the number of atoms on both side (reactant and product)of the equation must be equal.

SnO₂ +2H₂ → Sn + 2H₂0

The equation is balanced .  SnO₂  has coefficient of 1 , H₂ has coefficient of 2, Sn has coefficient of 1 and H₂0 has coefficient of 2.

Q5

SnO₂ + 2H₂→ Sn + 2H₂0

1 moles of SnO₂ will balance the equation

Q6

The reactant is on the left side of the chemical equation. Therefore the reactants are Tin(iv) oxide and hydrogen molecules (SnO₂ and H₂)

Q7

The product is on the right side of the chemical equations .Therefore, the products are Tin and water molecules(Sn and H₂0).

Q8

The reaction is an endothermic reaction because it absorb heat from it environment.

Answer:

indian ocean

Explanation:

Considering the definition of molar mass, the mass of 1.5 moles of CaCO₃ is 150 grams.

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

The molar mass of a compound (also called Mass or Molecular Weight) is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.

In this case, you know the molar mass of the elements is:

So, the molar mass of the compound CaCO₃ is calculated as:

CaCO₃= 40 g/mole + 12 g/mole + 3× 16 g/mole

Solving:

CaCO₃= 100 g/mole

Next, you can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 100 grams, 1.5 moles of the compound contains how much mass?

\(mass=\frac{1.5 molesx100 grams}{1 mole}\)

mass= 150 grams

Finally, the mass of 1.5 moles of CaCO₃ is 150 grams.

Learn more about molar mass:

brainly.com/question/5216907

brainly.com/question/11209783

brainly.com/question/7132033

brainly.com/question/17249726

#SPJ1

The partial pressure of oxygen in the heliox deep-sea diving mixture is 0.0193 atm.

To calculate the partial pressure of oxygen in the heliox deep-sea diving mixture, we need to use the mole fraction of oxygen and the total pressure of the mixture.

First, we need to determine the number of moles of each gas in the mixture:

Moles of oxygen = 2.0 g / 32.00 g/mol = 0.0625 mol

Moles of helium = 98.0 g / 4.00 g/mol = 24.50 mol

Next, we can calculate the mole fraction of oxygen:

Mole fraction of oxygen = moles of oxygen / total moles = 0.0625 mol / (0.0625 mol + 24.50 mol) = 0.0025

We can then use the mole fraction of oxygen and the total pressure of the mixture to calculate the partial pressure of oxygen:

Partial pressure of oxygen = mole fraction of oxygen x total pressure = 0.0025 x 7.7 atm = 0.0193 atm

learn more about Partial pressure here:

https://brainly.com/question/31214700

#SPJ11

In the electrowinning process, the energy applied using 5 mol of IR photons with a wavelength of 32 nm is 1.863 MJ.

1. Convert wavelength to energy using the equation: E = (hc)/λ, where h is Planck's constant (6.626×10⁻³⁴ Js), c is the speed of light (3×10⁸ m/s), and λ is the wavelength (32 nm = 32×10⁻⁹ m).

2. Calculate the energy of one IR photon: E = (6.626×10⁻³⁴ Js × 3×10⁸ m/s) / (32×10⁻⁹ m) = 6.184×10⁻¹⁹ J.

3. Determine the energy for 5 moles of IR photons: Total energy = 6.184×10⁻¹⁹ J × 5 × 6.022×10²³ photons/mol = 1.863×10⁶ J.

4. Convert energy to megajoules: 1.863×10⁶ J = 1.863 MJ.

To know more about Planck's constant click on below link:

https://brainly.com/question/30763530#

#SPJ11

The separation of different molecules in a mixture using column chromatography, which is a widely used separation technique in various fields of science, including chemistry and biology.

The degree of migration of each component on the column depends on the molecule's physical properties, such as molecular weight and polarity, as well as the nature of the column and the exclusion limits of the resin used. In general, lighter molecules with lower molecular weights and higher polarity tend to migrate more quickly through the column and elute earlier, while heavier and less polar molecules migrate more slowly and elute later. The nature of the column, including its packing material and the presence of charged functional groups, also influences the degree of migration and elution order of each component. Finally, the exclusion limits of the resin used determine the size range of molecules that can be separated by the column, with larger molecules being excluded and eluting later than smaller ones. Overall, a combination of these factors determines the degree of migration and elution order of each component in a column separation.

Learn more about migration here:

https://brainly.com/question/17991559

#SPJ4

QUESTION: Explain the degree of migration of each component on the column. Explain the order in which each component elute from the column taking into consideration (in no particular order): i. The molecule's physical properties (molecular weight) ii. The nature of the column (how the column works) iii. Exclusion limits of the resin used. The exclusion limits of a resin indicate the range of molecular weights of the molecules it can separate.

Answer: Electron configurations describe where electrons are located around the nucleus of an atom.

Explanation:  For example, the electron configuration of lithium, 1s²2s¹, tells us that lithium has two electrons in the 1s subshell and one electron in the 2s subshell

well excuse the "s" at the end