Which of these atoms cannot serve as a central atom in a Lewis structure: (a) O; (b) He; (c) F; (d) H; (e) P? Explain.

The spectator ion in this equation is Cl.

Compare the reactant and product sides of the rewritten response and move out the spectator ions. Any dissolved ions that appear inside the same form on both facets are spectator ions. If all are spectator ions then no response takes location.

A spectator ion is an ion that exists as a reactant and a product in a chemical equation. The ions which do not take part in chemical reactions and present identically on both facets of the reactions are called Spectator ions. in the net chemical reaction, the spectator ions are canceled from each facet of the equation.

The hydrogen and hydroxide ions react to form water, however, the sodium and chlorine ions live in the solution unchanged. they're spectator ions because they did not take part in the chemical reaction.

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Answer:

the ans is wrong

The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

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b. Ozone. Photochemical oxidants are pollutants that are formed when certain chemicals, including nitrogen oxides and volatile organic compounds, are exposed to sunlight.

These chemicals undergo a series of reactions that result in the formation of ozone and other secondary pollutants. Ozone is the major constituent of photochemical oxidants and is a harmful air pollutant that can cause respiratory problems and other health issues. It is also a greenhouse gas that contributes to climate change. Other pollutants that are commonly found in photochemical smog include nitrogen dioxide and peroxyacetyl nitrate.

It is important to monitor and reduce emissions of these pollutants in order to improve air quality and protect public health. This can be done through a combination of regulatory measures, such as emissions controls on vehicles and industry, as well as individual actions, such as reducing car use and using cleaner forms of transportation.

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Answer:

false, The nucleus of atoms still move around like crazy, it's just the electrons move more.

Similar to Cohesion, adhesion is the attraction between molecules of different substances . Water uses adhesion when it's attraction to another substance is greater than the water's attraction to itself. if you have ever dropped a cup of water on a hardwood floor,you know that it spreads out instead of foaming beads.

Answer:

During a change in state, the motion of the particles changes. ... Particles in a liquid can side past each other, but particles in a solid can only move enough to vibrate. Removing energy from a liquid can cause it to change to a solid. Adding energy to a solid can cause it to change to a liquid.

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Change of state is caused by supply of heat to a substance causing its molecules to move faster.

There are three states of matter, these are;

It is possible for a substance to be transformed from one state of matter to the other when heat energy is supplied to the substance.

This heat energy causes the kinetic energy of the molecules of the substance to increase hence they vibrate faster and change from one physical state to another.

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Answer:

CO₂

Explanation:

The product of the reaction is CO₂.

In a chemical reaction, the product is the substance usually found on the right hand side of the expression.

  Reaction equation is given as;

          C  +  O₂  →  CO₂  

In this reaction, C and O₂ are the reactants

  CO₂ is the product of the reaction.

Answer: 0.66 M

Explanation:

\(M_{A}V_{A}=M_{B}V_{B}\\(80.0)M_{A}=(36.2)(1.45)\\M_{A}=\frac{(36.2)(1.45)}{80.0} \approx \boxed{0.66 \text{ M}}\)

Chemical weathering processes are particularly effective on limestone landscapes, resulting in the formation of unique landforms and features.

Limestone, primarily composed of calcium carbonate, is highly susceptible to chemical reactions with various agents present in the environment. Through the process of carbonation, limestone can undergo chemical weathering when it reacts with carbonic acid, a weak acid formed from the dissolution of carbon dioxide in water. This reaction leads to the gradual dissolution of calcium carbonate, causing the limestone to be eroded and forming distinctive landforms such as caves, sinkholes, and underground drainage systems. Over time, the continuous dissolution of limestone by carbonic acid can create extensive underground cave networks. Another significant chemical weathering process affecting limestone landscapes is solution weathering. In this process, water containing dissolved acids, such as sulfuric acid from acid rain, infiltrates the limestone. The acidic water reacts with calcium carbonate, resulting in the breakdown and removal of the rock material. This chemical reaction can lead to the formation of karst topography, characterized by rugged terrain, sinkholes, and disappearing streams.

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Answer:

2.38x10²³ atoms oxygen

Explanation:

To solve this question we need to convert the mass of sand to moles using its molar mass (Molar mass SiO₂ = 60.08g/mol). Twice these moles are the moles of Oxygen and using Avogadro's number we can find the amount of atoms of Oxygen in the mixture:

Moles SiO₂:

11.87g * (1mol / 60.08g) = 0.1976moles SiO₂

Moles Oxygen:

0.1976moles SiO₂* 2 = 0.3951moles oxygen

Atoms oxygen:

0.3951moles oxygen * (6.022x10²³atoms / 1mol O₂) =

Answer: stable unmetal

Explanation: if you count electrons, you get 35 and it is element Br

According to the electronic configuration , the element with the given electronic configuration  is a unstable non metal.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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a. The rate law for the reaction \(2Cl_{2}O_{5}\)(g) → \(2Cl_{2}\)(g) + \(5O_{2}\)(g) is rate = k[\(Cl_{2}O_{5}\)]2

b. The rate constant is k = 0.0489 \(M^{-2}/ms^{-1}\).

To write the rаte lаw for this reаction, we need to check how the rаte of the reаction chаnges for the chаnge in the concentrаtion of the reаctаnts or products. To get the rаte of the reаction, we need to find out the chаnge in concentrаtion per unit of time. So, the initiаl rаte of reаction (r) will be given by:

r = {Δ[\(Cl_{2}O_{5}\)]/Δt}

where Δ[\(Cl_{2}O_{5}\)] is the chаnge in concentrаtion аnd Δt is the chаnge in time.

Аs per the аbove formulа, the initiаl rаte of the reаction is:

r = {(0.900 - 0.506)/(10 - 0)} M/ms

= 0.0397 M/ms

Аs per the stoichiometry of the reаction, 2 moles of \(Cl_{2}O_{5}\) produces 2 moles of \(Cl_{2}\) аnd 5 moles of \(O_{2}\). Thus, the rаte lаw for the given reаction is:

rаte = k[Cl2O5]2

Here, the rаte constаnt is k.

Now, putting the given vаlues in the rаte lаw аnd solving for k:

k = rаte/[\(Cl_{2}O_{5}\)]2

Now, the initiаl rаte of the reаction, rаte = 0.0397 M/ms

Аnd the concentrаtion of \(Cl_{2}O_{5}\) аt the beginning of the reаction, [\(Cl_{2}O_{5}\)] = 0.900 M

So,

k = 0.0397/(0.900)2

= 0.0489 \(M^{-2}/ms^{-1}\)

Thus, the rаte lаw for the given reаction is rаte = k[\(Cl_{2}O_{5}\)]2 аnd the rаte constаnt is k = 0.0489 \(M^{-2}/ms^{-1}\).

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Answer:

All of them

Explanation: A molecule can be all of them

Answer:

504000 J

Explanation:

Applying,

Δq = cm(Δt)............. Equation 1

Where Δq = change in thermal energy, c = specific heat capacity of water,  m = mass of water, Δt = change in temperature.

From the question,

Given: m = 2 kg, Δt = 80-20 = 60°C

Constant; c = 4200 J/kg.°C

Substitute these values into equation 1

Δq = 2(4200)(60)

Δq = 504000 J

Hence the thermal energy is  504000 J

Answer:

Star 1 and two. Good on exams I'm doing mine two

Answer:star 1 and 2

Explanation:

The mass transfer rate of CO₂ through the tube is 0.0584 g/s.

We can use Fick's Law of Diffusion to calculate the mass transfer rate of CO₂ through the tube:

J = -D * dC/dx

where J is the mass transfer rate, D is the diffusion coefficient, and dC/dx is the concentration gradient.

First, we need to calculate the diffusion coefficient of CO₂ in N₂ at 298 K. We can use the Wilke-Chang equation for this:

\(D12 = (1.013 * 10^-^5) * (T/M)^0^.^5 * (1/φ1 + 1/φ2) * (M1/M2)^0^.^5\)

where D12 is the diffusion coefficient of CO₂ in N₂, T is the temperature in K, M is the molar mass in g/mol, φ is the viscosity, and the subscripts 1 and 2 refer to CO₂ and N₂, respectively.

At 298 K, the molar masses and viscosities of CO₂ and N₂ are:

M_CO₂ = 44.01 g/mol

M_N₂ = 28.01 g/mol

φ_CO₂ = 0.0000178 Pa s

φ_N₂ = 0.0000172 Pa s

Substituting these values into the Wilke-Chang equation, we get:

D12 = 0.148 cm²/s

Next, we need to calculate the concentration gradient of CO₂. We can use the equation:

dC/dx = (C2 - C1) / L

where C1 and C2 are the partial pressures of CO₂ at the two ends of the tube, and L is the length of the tube.

Substituting the given values, we get:

dC/dx = (50 Torr - 100 Torr) / (1 m) = -50 Torr/m

Finally, we can calculate the mass transfer rate:

J = -D * dC/dx * A

where A is the cross-sectional area of the tube.

Substituting the values, we get:

J = -0.148 cm₂/s * (-50 Torr/m) * π*(0.5 cm)₂ = 0.0584 g/s

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Answ

Explanation:

true

Answer:

These include decomposition, synthesis, displacement, acid-base, combustion, oxidation-reduction, electrochemical

Answer:

Chemical Reaction Parts:

These include decomposition, synthesis, displacement, acid-base, combustion, oxidation-reduction, electrochemical, and myriad others.

Explanation:

Seven Things That Indicate a Chemical Change Is Occurring

Gas Bubbles Appear. Gas bubbles appear after a chemical reaction has occurred and the mixture becomes saturated with gas. ...

Formation of a Precipitate. ...

Color Change. ...

Temperature Change. ...

Production of Light. ...

Volume Change. ...

Change in Smell or Taste. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Often, physical changes can be undone, if energy is input.

Answer:

Abiotic and Biotic factors?

Answer:

The answer will be 2.98K

Explanation:

Using the formula:

Q = mc∆T

Q= 5,800 (heat in joules)

m= convert 15.2kg to g which is 15200g (mass in grams)

c= 0.128 J/g °c (Specific heat capacity)

∆T=  what we need to find (temperature change)

5800J = 15200g x 0.128 x ∆T

= 2.98K  

Answer:

At 4°C what is not able to decompose into hydrogen and oxygen chemical changes cannot be reverted, in this case it can. It will not change color, because water is always clear, and won't at this state turn into ice. though it can be reverted.

Explanation:

I hope that is correct that's all I've learned so far!

Answer:

A) Its temperature

Explanation:

In addition to other natural and human-made processes, the burning of organic materials is the main source of formaldehyde formation.

The simplest of the aldehydes, formaldehyde (HCHO), commonly known as methanal, is an organic molecule utilized in huge quantities during numerous chemical industrial processes. It is often supplied as formalin, an aqueous solution with a 37 percent concentration, and is primarily manufactured via the vapor-phase oxidation of methanol.

Industrial production of formaldehyde involves the catalytic oxidation of methanol. The most often used catalysts are iron(III) oxide, iron molybdenum oxides, and silver metal [e.g. Vanadium oxides or iron(III) molybdate with a molybdenum-enriched surface. Methanol and oxygen react at around in the commonly used formox process.

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The greenhouse gas among the following list of gases is a. Carbon Dioxide. Carbon dioxide (CO2) is a greenhouse gas. It is produced by burning fossil fuels (coal, oil, and natural gas) for energy. I

It is also produced by the decomposition of organic matter and other chemical reactions. Carbon dioxide, methane, and nitrous oxide are the three primary greenhouse gases. Carbon dioxide is the most important greenhouse gas among them. Other greenhouse gases include water vapor, ozone, and some industrial gases.The term "greenhouse gas" refers to any gas that traps heat in the atmosphere. These gases contribute to global warming by allowing sunlight to enter the atmosphere but preventing the heat that is generated from leaving it. As a result, the Earth's temperature rises, resulting in climate change.

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Answer:

2,5,4,1,3

Explanation:

Answer:

Ionic Bond

Explanation:

Answer:

mu answer is A

Explanation:

i think it is a popular opinion because its the opinion of a country

According to the data given, the network covalent compound is boron nitride.

Covalent compound is defined as a type of compound which is formed by the mutual sharing of electrons to form electron pairs between the two atoms.These electron pairs are called as bonding pairs or shared pair of electrons.

Due to the sharing of valence electrons , the atoms are able to achieve a stable electronic configuration . Covalent compound involves many types of interactions like σ bonding,π bonding ,metal-to-metal bonding ,etc.

Sigma bonds are the strongest covalent bonds while the pi bonds are weaker covalent bonds .Covalent bonds are affected by electronegativities of the atoms present in the molecules.Compounds having covalent bonds have lower melting points as compared to those with ionic bonds.

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