Which compound contains both sigma and pi bonds

Answer:

The answer is option A

Explanation:

The question states,'which statement best describes how an ionic bond forms. The correct option is A. Ionic bonds are formed as a result of complete transfer of electrovalence electrons from one atom to another. The atom that donate the electron become a positively charged ion while the atom that received the atom become a negatively charged ion.

Brainliest is greatly appreciated

Answered by: Skylar

6/8/2020

10:05 AM (Eastern Time)

Answer:

A!!!!

Explanation:

Answer:

ΔH° of the reaction is -747.54kJ

Explanation:

Based on gas law, it is possible to find the ΔH of a reaction using ΔH of half reactions.

Using the reactions:

(1) C(graphite) + 1/2O₂(g) → CO(g) ΔH° = -110.5 kJ

(2) CO(g) + 1/2O₂(g) → CO₂(g) ΔH° = -283.0 kJ

(3) H₂(g) + 1/2O₂(g) → H₂O(l) ΔH° = -285.8 kJ

(4) C(graphite) + 2H₂(g) → CH₄(g) ΔH° = -74.81 kJ

(5) CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l) ΔH° = -890.3 kJ

The sum of 4×(4) + (5) gives:

4C(graphite) + 8H₂(g) + 2O₂(g) → CO₂(g) + 2H₂O(l) + 3CH₄(g)

ΔH° = -74.81 kJ ×4 - 890.3 kJ = -1189.54kJ

Now, this reaction - 4×(1) gives:

4CO(g) + 8H₂(g) → CO₂(g) + 2H₂O(l) + 3CH₄(g)

ΔH° = -1189.54kJ - 4×-110.5 = -747.54kJ

Thus ΔH° of the reaction is -747.54kJ

ΔH° of the reaction is for the production of SNG -747.54kJ

According to Hess’ law of constant summation, the standard reaction enthalpy is independent of the pathway or number of the reaction steps taken for a multistep reaction, rather it is the sum of standard enthalpies of intermediate reactions involved at the same temperature.

Based on Hess law, it is possible to find the ΔH of a reaction using ΔH of half reactions.

From the given reactions:

The sum of Reaction 4 × 4 + Reaction 5 - Reaction 1 × 4 gives the reaction below:

4CO(g) + 8H₂(g) → CO₂(g) + 2H₂O(l) + 3CH₄(g)

ΔH° = {-74.81 kJ × 4} - 890.3 kJ {- 4 ×-110.5}

ΔH° = -747.54kJ

Therefore, ΔH° of the reaction is for the production of SNG -747.54kJ

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Answer:

152

Explanation:

since it weighs 1.9 grams per [tex]cm^{3}[/tex] we get 80*1.9 which is 152 grams

Answer:

Towards the products, or to the right

Explanation:

There are no provided answer choices, but the answer should be to the right.

By Le Chatelier's principle, which basically can be summarized as "if you mess with chemistry, chemistry messes back", if more reactants are added, the equilibrium will shift to the right towards the products in order to make more products and counteract the increase in I₂.

Answer:

La B

Explanation:

It's B on Ap3x

Straight away from the source

Answer:

What is the atomic number of neon?

10

What is the atomic mass of neon? Give your answer to the nearest tenth.

20.2

The periodic table is a representation of the periodic elements based on atomic numbers. The atomic number of neon is 10, and the atomic mass is 20.2 amu.

Neon is categorized as a stable gas that belongs to the noble gas group. It has been represented as Ne and is a monoatomic gas with no odor or color. It has an atomic number of 10 and an electronic configuration as, [He] 2s²2p⁶.

The atomic mass of neon elements is 20.2 amu and is said to have full electrons per shell. They do not need to donate or accept any electron as they have a balanced orbital. They have the property of fluorescence and are used in electric signs and lamps.

Therefore, neon is placed in group 18 and has atomic number 10 and a mass of 20.2 amu.

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Answer:

Granite will be made up of the largest

Answer:

Radium-226 is a radioactive decay product in the uranium-238 decay series and is the precursor of radon-222. Radium-228 is a radioactive decay product in the thorium-232 decay series. Both isotopes give rise to many additional short-lived radionuclides, resulting in a wide spectrum of alpha, beta and gamma radiations.

Answer:

False

Explanation:

This is because the electrical circuit, where the electrical energy is converted into another form of energy, e.g. lightbulb converts electrical energy into light and heat, an electric bell converts the electrical energy into sound and heat.

False.

The statement a load in a circuit transforms the light energy into electrical energy is False.

Any device which transforms the electrical energy into other forms of energy, like light energy, sound energy, etc is called an electric load in the circuit.

The type of kinetic energy caused by moving electric charges is known as electrical energy. The alternating current, direct current, and batteries provide electrical energy.

So, the load transforms the electrical energy into other forms like light energy, sound energy, etc.

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Answer: to find a cure for the common cold to produce insulin for diabetics

Explanation: It has helped many people

Answer:

Ok so the first step is glycolysis(which involves 10 different 'steps') which is conducted in the cytosol, so this is where  glucose breaks down  into two molecules of pyruvate.

The breakdown of glucose releases energy which changes ADP to ATP and NAD+ to  NADH.

The second step is commonly known as the Krebs Cycle or Citric Acid Cycle(involves 11 steps). This is where pyruvate is broken down into 3CO2.

The breakdown of pyruvate releases energy which changes ADP to ATP,  NAD+ to NADH and FAD+ to FADH2  

The third step is known as oxidative phosphorylation, this is where energy from NADH and FADH2  is used to generate a H+ gradient, which changes ADP to ATP.

Answer:

Glycolysis, Citric Acid Cycle, and the Electron Transport Chain  

Explanation:

Cellular respiration is the process in which cells break down glucose and release the stored energy to make ATP.

Step 1 — Glycolysis

Glycolysis is the conversion of glucose — a C₆ molecule — into two C₃ (pyruvate) fragments.

Step 1a. The linking reaction — pyruvate oxidation  

In preparation for the second step, each pyruvate ion loses a carbon atom as CO₂ and forms a two-carbon acetyl group.

The acetyl group is transferred to Coenzyme A to produce acetyl CoA.

Step 2 — the Citric Acid Cycle (CAC)

The acetyl CoA enters the CAC.

In various redox reactions, the C atoms in the acetyl group are oxidized to CO₂.

The electrons are passed to energy-storing molecules like NADH and FADH₂.

3. Step 3 — the Electron Transport Chain (ETC)

The NADH and FADH₂ pass their electrons to the Electron Transport Chain

In a series of redox reactions, the electrons reduce oxygen to water.

The energy released converts ADP to ATP (oxidative phosphorylation)

The whole purpose of respiration is to oxidize glucose to CO₂ and water and use the energy produced to form ATP.

One molecule of glucose produces 2 ATP in glycolysis, 2 in the CAC, and 34 in the ETC.

Answer:

Tornadoes form when warm, humid air collides with cold, dry air.

Explanation:

The denser cold air is pushed over the warm air, usually producing thunderstorms. The warm air rises through the colder air, causing an updraft. The updraft will begin to rotate if winds vary sharply in speed or direction.

// have a great day //

Answer:

your question says of the following but their isn't any of the following ):

Explanation:

But other than than that person right up above

Answer:

Hydrogen in its metallic state (usually considered a nonmetal)​

Lithium.

Sodium.

Potassium.

Rubidium.

Cesium.

Francium.

Explanation:

Answer:

The list of elements that contains only metals is tin, copper and cesium.

Carbon and iodine aren't metals.

Helium isn't metal.

Neither iodine, carbon, nor argon are metals.  

(Hope this helps) Sky

Answer:

Explanation:

The higher the melting point of a substance, then the higher the force of attraction. Which means there is direct relationship between the melting point and force of attraction.

The increasing order of interparticle force of attraction of the the three particles are

Z(398) Y(314) X (298)

I.e Particle " Z " have highest melting point, follows by particle "Y" follows by particle "X

NOTE: The melting point of a substance refers to the

temperature whereby there there is a change from solid state to liquid state, it is dependent on the pressure of the system

Answer:

pOH = - log [molarity of OH-] = - log [ molarity of NaOH] , assuming full dissociation. Thus, pOH = - log ( 0.001) = - (-3) = 3. Thus, the pH of 0.001 mol/dm3 NaOH solution is 11.

Explanation:

Hope it'll help!

Answer:

copper cathodes are normally referred to when talking about copper. Cathode is the purest form of copper and is the feedstock used to produce copper wire, cable, sheet, strip, tube, etc.

Explanation:

Answer:

wrong.

Explanation: charged atoms have have more electrons than neural because  they charge it . a  neural atom has eaqual number of electrons and neutrons.

hope this helps(^人^)

Answer:

c)Magnetism can cause electrons to flow, and electricity can make a wire magnetic.

Explanation:

If this is your question:

Which of the following statements describes electromagnetism?

a)Magnetism and electricity are both used by society to do work.

b)Magnetism and electricity both include protons and electrons.

c)Magnetism can cause electrons to flow, and electricity can make a wire magnetic.

d)Electrons are attracted to the protons in magnets.

Answer:

magnetism can cause electrons to flow, and electricity can make a wire magnetic

Explanation:

a p e x :)

Answer:

0.60 moles of Na₂SO₄

Explanation:

Molarity is an unit of concentration defined as the ratio between moles of solute and liters of solution.

A solution of Na₂SO₄ 0.40M contains 0.40 moles of solute (Na₂SO₄) per liter of solution.

As you have 1.5L of solution, moles of Na₂SO₄:

1.5L × (0.40mol / L) = 0.60 moles of Na₂SO₄

Answer:

C. Rate = k[H2]^2[O2]

Explanation:

Rate law only cares about REACTANTS. Since, rate law can only be determined experimentally, I am assuming the given reaction mechanism is elementary reaction from which we can write the rate law.

Only H2 and O2 are part of rate law since they are reactants and also the coefficient in front of H2 goes as exponent on rate law to indicate the order of H2 in the reaction.

Rate= k [H2]^2 [O2]

According to the chemical equilibrium, the rate law for the given reaction is Rate = k[H₂]²[O₂] as  the concentration is dependent on both the reactants.

Chemical equilibrium is defined as the condition which arises during the course of a reversible chemical reaction with no net change in amount of reactants and products.A reversible chemical reaction is the one wherein the products as soon as they are formed react together to produce back the reactants.

At equilibrium, the two opposing reactions which take place take place at equal rates and there is no net change in amount of the substances which are involved in the chemical reaction.At equilibrium, the reaction is considered to be complete . Conditions which are required for equilibrium are given by quantitative formulation.

Factors which affect chemical equilibrium are change in concentration , change in pressure and temperature and presence of catalyst.

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Answer:

2.77

Explanation:

pH = - log (1.70 x 10^-3)  = 2.77

Answer:

The answer is 60W

Power = Work done/ time

time = 1 second

Work done = 60J

Power = 60/1

= 60W

Hope this helps.

Answer:

Mg(s)+Zn2+>>>>>Mg2++Zn(s) B

Explanation:

The net ionice quation of a reaction represents the net  change in the reaction.Here the reaction proceeds to the formation of Mg²⁺  ion and metallic zinc. Thus option B is correct.

What is ionic equation?

A balanced equation of chemical reaction represents the perfect stoichiometric ratio of each reactants and products where each elements have to be equal in number in both side.

An ionic equation represents the ions involved in the reaction and the charges and coefficients of ions have to balanced each side.

In the electrolysis of magnesium and zinc electrodes, metallic magnesium oxidizes to Mg²⁺ions and Zn²⁺ ions reduces to metallic zinc. The NO³⁻- ions remains as same as in its aqueous state in the electrolyte.

Hence the net ionic equation is as written in  option B.

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Answer:

0.077M is the concentration of the hydroxyl ion

Explanation:

Dilution factor is the ratio between the aliquot that is taken of a solution and the total volume of the diluted solution.

For the problem, dilution factor is:

7.53cm³ / 147cm³ = 0.05122

To obtain molarity of a diluted solution you must multiply dilution factor and initial molarity of the solution, thus:

1.5 M × 0.05122 = 0.077M is the concentration of the hydroxyl ion

Answer:

changes from a solid to a liquid

Explanation:

C- A solid is being formed

Since the delta is negative, this indicates that a substance is transforming from a liquid state to a solid state. This best corresponds with C- A solid is being formed.

Answer:

El reactivo en exceso es hidrógeno

97.12g NH₃ son formados

Explanation:

Basados en la reacción:

N₂(g) + 3 H₂(g) → 2 NH₃(g)

El hidrógeno pasa de estado de oxidación 0 a estado de oxidación +1. Al perder un electrón se oxida y es el agente reductor.

El nitrógeno pasa de estado 0 estado -3. Al ganar 3 electrones se reduce y es el agente oxidante.

100g de N₂ son (Peso molecular: 28g/mol):

100g × (1mol / 28g) = 3.57 moles de N₂

Y 25g de H₂ son (Peso molecular: 2g/mol):

25g × (1mol / 2g) = 12.5 moles de H₂

Como 3 moles de hidrógeno reaccionan por mol de nitrógeno, las moles de nitrógeno que se necesitan para hacer reaccionar completamente 12.5 moles de hidrógeno son:

12.5 moles H₂× (1 mol N₂ / 3 moles H₂) = 4.17 moles de nitrógeno.

Como hay 3.57 moles de nitrógeno, el reactivo en exceso es hidrógeno.

Como el reactivo limitante es el nitrógeno y 1 mol de nitrógeno produce 2 moles de amoniaco, las moles de amoniaco son:

3.57 moles de N₂ × (2 moles NH₃ / 1 mol N₂) = 7.14 moles de NH₃

La masa producida idealmente es:

7.14 mol NH₃ ₓ (17g/mol) = 121.4 g de NH₃. Como la eficiencia del proceso es del 80%:

121.4 g NH₃ × 80% = 97.12g NH₃ son formados

Answer:

Excess reactant: H₂

Mass of produced ammonia,  97.1 g

Explanation:

Identify the reaction:

N₂ + 3H₂  → 2NH₃

We identify the reducing agent and the  oxidizing agent:

N₂ changed the oxidation state from 0 to -3. This is the reduction, so it is the  oxidizing agent. By the way the H₂ is the reducing agent.

We convert the mass to moles:

100 g / 28 g/mol = 3.57 moles of N₂

25 g / 2 g/mol = 12.5 moles of H₂

Ratio is 1:3. For 1 mol of nitrogen, we need 3 moles of hydrogen

Then, 3.57 moles of N₂ would need (3.57 . 3) / 1 = 10.7 moles

We have 12.5 moles of H₂, so the hydrogen is the excess reactant and the nitrogen is the limiting.

To produce ammonia, the reaction needs 1 mol of N₂, that can produce 2 moles of product

3.57 moles of N₂ will produce (3.57 . 2) / 1 = 7.14 moles of NH₃

As yield reaction is 80%, we will produce 7.14 mol . 0.80 = 5.71 moles

We convert the moles to mass: 5.71 mol . 17 g / 1mol = 97.1 g

Answer:

B= 17649.28/A

Explanation:

Answer:

Molar mass of BaSO4 = 137.3 + 32 + (16 ×4)

= 137.3 + 32 +64

= 233.3g/mol

Molar mass = mass/ number of moles

= 233.3 g/mol = mass/ 1 mol

mass = 233.3g

Hope this helps.