draw the lewis structure for the ethylene molecule. be sure to include all resonance structures that satisfy the octet rule.

a) The balanced chemical equation for the reaction is: 2H₂ + O₂ → 2H₂O

b) the number of moles of O₂ required is approximately 1.004 moles.

c)  approximately 45 liters of H₂ and 22.5 liters of O₂ are needed to obtain 45 liters of H₂O.

a) Balancing the chemical equation:

The balanced chemical equation for the reaction is: 2H₂ + O₂ → 2H₂O

b) Calculating the number of moles of the reactants needed to obtain 45 liters of H₂O:

From the balanced equation, we can see that for every 2 moles of H₂O produced, we need 2 moles of H₂ and 1 mole of O₂. Since the stoichiometry is based on moles, we need to convert the given volume of H2O into moles.

To convert volume to moles, we need to use the ideal gas law, PV = nRT. At standard temperature and pressure (STP), the molar volume of an ideal gas is 22.4 liters.

Given that we have 45 liters of H2O, we can calculate the number of moles as follows:

moles of H₂O = (volume of H₂O) / (molar volume at STP)

            = 45 liters / 22.4 liters/mol

            ≈ 2.008 moles of H₂O

Since the stoichiometry of the reaction is 2 moles of H₂O for every 2 moles of H₂, we need an equal number of moles of H₂. Therefore, the number of moles of H₂ required is also approximately 2.008 moles.

For O₂, since the stoichiometry is 1 mole of O₂ for every 2 moles of H₂O, we need half the number of moles of H₂O. Thus, the number of moles of O₂required is approximately 1.004 moles.

c)  the volume of the reactants:

Since the stoichiometry of the balanced equation is 2 moles of H₂for every 1 mole of O₂ and 2 moles of H₂O, we can deduce the volume of the reactants based on their molar volumes at STP.

For 2.008 moles of H₂, the volume can be calculated as follows:

volume of H₂= (moles of H₂) * (molar volume at STP)

            = 2.008 moles * 22.4 liters/mol

            ≈ 45 liters of H₂

For 1.004 moles of O₂, the volume can be calculated similarly:

volume of O₂= (moles of O₂) * (molar volume at STP)

            = 1.004 moles * 22.4 liters/mol

            ≈ 22.5 liters of O₂

Therefore, approximately 45 liters of H₂and 22.5 liters of O₂ are needed to obtain 45 liters of H₂O

for more questions on chemical
https://brainly.com/question/29886197
#SPJ8

The value of the equilibrium constant, Kc for the given reaction is 3.655

Equilibrium constant of a given reaction is defined as follow:

Reactant ⇌ Product

Equilibrium constant (Kc) = Product / Reactant

With the above information, we can obtain the equilibrium constant, Kc for the given reaction as follow:

CO₂(g) + H₂(g)⇌CO(g) + H₂O(g)

Equilibrium constant (Kc) = [CO][H₂O] / [CO₂][H₂]

Equilibrium constant (Kc) = (0.15 × 0.29) / (0.35 × 0.034)

Equilibrium constant (Kc) = 3.655

Thus, we can conclude that the equilibrium constant, Kc is 3.655

Learn more about equilibrium constant:

https://brainly.com/question/16589765

#SPJ1

Answer:

hope it helps much as you can

Answer:

element

Explanation:

0.02314 moles of  NO₂ can be formed from the decomposition of 1.25 g of dinitrogen pentoxide.

The balanced equation for the decomposition of dinitrogen pentoxide is:

2 N₂O₅ → 4 NO₂ + O₂

The molar mass of N₂O₅  is 108.01 g/mol.

To determine the number of moles of N₂O₅  present in 1.25 g, we use the following calculation:

moles N₂O₅  = mass / molar mass

moles N₂O₅ = 1.25 g / 108.01 g/mol

moles N₂O₅ = 0.01157 mol

From the balanced equation, we can see that 2 moles of N₂O₅  decompose to form 4 moles of NO2. Therefore, the number of moles of NO2 produced can be calculated as:

moles  NO₂ = (0.01157 mol N2O5) × (4 mol NO2 / 2 mol N2O5)

moles  NO₂ = 0.02314 mol

Therefore, 0.02314 moles of  NO₂ can be formed from the decomposition of 1.25 g of dinitrogen pentoxide.

learn more about moles here

https://brainly.com/question/29367909

#SPJ1

When the resistance in a circuit is halved, the voltage increases by a factor of 4. This relationship is known as Ohm's law, which states that voltage (V) is equal to current (I) multiplied by resistance (R) in a circuit, or V = I x R.

If the resistance in a circuit is halved, then R in Ohm's law is divided by 2, which means that the voltage (V) across the circuit increases by a factor of 2, assuming that the current (I) remains constant.
However, the current (I) in the circuit may also change if the resistance is altered. If the voltage source remains constant and the resistance is halved, then the current (I) will double, as per Ohm's law. Therefore, the voltage (V) across the circuit will increase by a factor of 2 x 2 = 4, which is four times its original value.
This is because the current in the circuit also changes when the resistance is altered, according to Ohm's law.

For such more questions on resistance

https://brainly.com/question/2735534

#SPJ11

Answer:

b

Explanation:

The rate law which is consistent withe the given chemical equation is rate=k[HBr][O₂] as the rate of reaction is dependent on concentration of both reactants that is HBr and oxygen.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ2

Explanation:

The orbital diagram that represents the ground state of Be would have two electrons in the 1s orbital and two electrons in the 2s orbital, with the following configuration:

1s↑↓ 2s↑↓

The "1s" and "2s" notations refer to the energy levels of the orbitals, with "1s" being the lowest-energy level and "2s" being the next highest. The arrows indicate the spin of each electron; up arrows represent "spin up" electrons, while down arrows represent "spin down" electrons.

It's worth noting that the Aufbau principle (which states that electrons fill the lowest-energy orbitals first) and the Pauli exclusion principle (which states that no two electrons can have the same set of quantum numbers) are both reflected in this orbital diagram for the ground state of Be.

Answer:

Explanation:

A buffer is defined as an aqueous mixture of a weak acid and its conjugate base or vice versa.

In the systems:

H₂CO₃(aq) and KHCO₃(aq): Carbonic acid, H₂CO₃, is a weak acid that, in solution with its conjugate pair, HCO₃⁻ make a buffer system.

NaCl(aq) and NaOH(aq): NaCl is a salt and NaOH is a strong base. Thus, this system is not a buffer system.

H₂O(l) and HCl(aq): Water is a solvent and HCl a strong acid. This is not a buffer system.

HCl(aq) and NaOH(aq): HCl is a strong acid and NaOH a strong base. This is not a buffer system.

NaCl(aq) and NaNO₃(aq): Both NaCl and NaNO₃ are salts and this system is not a buffer system.

Among the available buffer systems are \(\rm H_2CO_3\)(aq) and \(\rm KHCO_3\)(aq) solution. Therefore, the correct option is option A.

In an aqueous solution, a buffer system consists of a weak acid and its conjugate base (or a weak base and its conjugate acid). \(\rm H_2CO_3\) (carbonic acid) is a weak acid in this example, and \(\rm KHCO_3\) (potassium bicarbonate) is its conjugate base. When mixed in solution, they can resist pH changes by receiving or donating protons, thereby helping to keep the solution's acidity or alkalinity within a specific range.

Therefore, the correct option is option A.

To know more about buffer, here:

https://brainly.com/question/31847096

#SPJ6

Answer:

Kk I got it now but I think it to be great

Answer:

The new pressure is 1,135.67 torr

Explanation:

Boyle's law establishes the relationship between pressure and volume of a gas when the temperature is constant, establishing that the pressure of a gas in a closed container is inversely proportional to the volume of the container. Mathematically, this law says that the product of pressure and volume is constant:

P*V=k

Charles's law establishes the relationship between the temperature and the volume of a gas when the pressure is constant. This law states that the volume is directly proportional to the temperature of the gas. So, Charles's law says that the quotient that exists between the volume and the temperature will always have the same value:

\(\frac{V}{T} =k\)

Finally, Gay-Lussac's Law is a gas law that relates pressure and temperature at constant volume. This law says that the pressure of the gas is directly proportional to its temperature:

\(\frac{P}{T} =k\)

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

\(\frac{P*V}{T} =k\)

Analyzing an initial state 1 and a final state 2, it is satisfied:

\(\frac{P1*V1}{T1} =\frac{P2*V2}{T2}\)

In this case:

Replacing:

\(\frac{662 torr*46.7 L}{266 K} =\frac{P2*35 L}{342 K}\)

Solving:

\(P2=\frac{342 K}{35 L} *\frac{662 torr*46.7 L}{266 K}\)

P2= 1,135.67 torr

The new pressure is 1,135.67 torr

Answer:

0.13 J/gC i believe.

Explanation:

Answer:

130.133 J/(kg·K)

Explanation:

Result in other units:

0.130133 J/(g·K)

31.0876675695 cal/(kg·K)

0.0310876675695 kcal/(kg·K)

0.130133 J/(g·°C)

The change to the reactants that would accomplish increase in reaction rate is increase in concentration of reactant.

Reaction rate is the speed at which a chemical reaction proceeds.

It is expressed in terms of either the concentration of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.

Here, a student wants to increase the rate of a reaction that involves gases.

The increase in reaction rate will be result of increase in concentration of reactant.

In case of gases, it can be done via:

Increasing the pressure and decreasing the volume.

Hence, the change to the reactants that would accomplish increase in reaction rate is increase in concentration of reactant. Increasing the pressure and decreasing the volume are ways to accomplish this.

Learn more about reaction rate click here https://brainly.com/question/8592296

#SPJ1

The shape of the sp3 orbitals is tetrahedral.

The term orbital refers to a region in space where there is a high probability of finding the electron. We know that sometimes orbitals could be combined in order to obtain the orbitals that are suited in energy to participate in chemical bonding. This is known as the hybridization of orbitals.

The sp3 orbital is a hybrid orbital The four hybrid orbitals are directed towards the corners of a regular tetrahedron. Hence the shape of the sp3 orbitals is tetrahedral.

Learn more about shapes of orbitals:https://brainly.com/question/11793076

#SPJ1

Answer:

sp2

bent

trigonal planar

sp3

bent

tetrahedral  

Explanation:

Answer:

343 m/s

Explanation:

Velocity Formula (Wave): v = fλ

v - velocity

f - frequency

λ - wavelength

We are given f = 23.0 and λ = 14.9. Simply plug it into the formula:

v = 23.0(14.9)

v = 342.7

v ≈ 343

Answer:

343 m/s

Explanation:

There is a formula to calculate the velocity of a wave given the frequency and wavelength.

Velocity = Frequency × Wavelength

v = f λ

v = 23 × 14.9

v = 342.7 ≈ 343

Considering the definition of molar mass, the correct answer is option c): the mass of 1.85 moles H₂O₂ is 62.9 grams.

The molar mass of substance is a property defined as the amount of mass that a substance contains in one mole.

The molar mass of a compound 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 H₂O₂ is calculated as:

H₂O₂= 2× 1 g/mole + 2× 16 g/mole

Solving:

H₂O₂= 34 g/mole

You can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 34 grams, 1.85 moles of the compound contains how much mass?

mass= (1.85 moles× 34 grams)÷ 1 mole

mass= 62.9 grams

Finally, the mass of 1.85 moles H₂O₂ is 62.9 grams.

Learn more about molar mass:

brainly.com/question/5216907

#SPJ1

Answer:

The final temperature of the copper would be 311.3°C.

I hope this helps you

Answer:

Answer: 2.5 mol O2 are needed to make 5 mol H2O, assuming H2 is in excess.

Explanation:

Answer:

The balanced chemical equation will be "\(NO_{2}+O\rightarrow NO+O_{2}\)".

Explanation:

The given equation is:

\(2NO_{2}\rightarrow 2NO+O_{2}\)

Step 1:

\(2NO_{2}\rightarrow NO+O\)...(equation 1)

Step 2:

\(NO_{2}+O\rightarrow NO+O_{2}\)...(equation 2)

On adding "equation 1" and "equation 2", we get

⇒  \(NO_{2}+NO_{2}+O\rightarrow NO+O+NO+O_{2}\)

⇒  \(2NO_{2}\rightarrow 2NO+O_{2}\)

The second step:

⇒  \(NO_{2}+O\rightarrow NO+O_{2}\)

The parts of the atom is as follows:

A.) Electrons

ElectronsB.) Neurons

ElectronsB.) NeuronsC.) Protons

An atom is defined as the indivisible part of an element that cannot further be broken down into smaller particles through a chemical process.

The various parts of an atom include the following:

Learn more about elements here:

https://brainly.com/question/25916838

#SPJ1

Answer:

A. electron

B. neutron

C. proton

Explanation:

Acetic acid has a 4.76 pH value. In order to create a buffer with a pH of 5.20, it is necessary to have a ratio of 2.75 of acetic acid and acetate ions.

The amount of a substance's solute in a specific amount of solution is how concentrated it is. Molarity, or the number of moles of solute in one liter of solution, is a common unit of measurement for concentrations.

Since the Great Salt Lake has a high concentration of salt, there aren't many fish there. A high concentration of a material in a solution simply implies that there is a lot of it there in relation to the volume. It signifies you pay attention properly to state that you have high focus skills.

To know more about Concentration visit:

https://brainly.com/question/10725862

#SPJ1

Answer:

the answer is calcium

Explanation:

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Option E is correct option.

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

Periodic table help a scientist to know what are the different types of elements are present in periodic table so that they can discover the new elements that are not being discovered yet. Out of given options, calcium element could be used in industry to control electron flow. Calcium belongs to alkaline earth metals that is group 2 of periodic table.

Therefore, the correct option is option E.

Learn more about periodic table, here:

https://brainly.com/question/11155928

#SPJ2

The specific heat capacity of the zinc metal, given that 2.40×10¹ g of zinc metal at 2.10×10¹ °C is added to the water is 0.27 J/gºC

First, we shall obtain the heat absorbed by the water when the zinc metal was added. This is shown below:

Q = MCΔT

= 5.60×10¹ × 4.184 × -2.1

= -492.0384 J

Now, we shall determine the specific heat capacity of the zinc metal. Details below:

Q = MCΔT

492.0384 = 2.40×10¹ × C × 76

492.0384 = 1824 × C

Divide both sides by 1824

C = 492.0384 / 1824

= 0.27 J/gºC

Learn more about specific heat capacity:

https://brainly.com/question/19104255

#SPJ1

Answer:

I think the answer is b. gas and liquid is a state of matter.

The amount, in kJ, of heat needed to completely vaporize 50.0g of water at 100°C is 118.8 kJ.

The heat needed to completely vaporize 50.0g of water at 100°C can be calculated using the following formula:

q = m x Hv

where:

First, we need to convert 50.0g to moles by dividing by the molar mass of water which is approximately 18.015 g/mol3:

moles of water = 50.0 g / 18.015 g/mol moles of water = 2.776 mol

Thus:

q = (2.776 mol) x (40.65 kJ/mol) q = 112.8 kJ

In other words, 112.8 kJ of heat is needed to completely vaporize 50.0g of water at 100°C.

More on heat of vaporization can be found here: https://brainly.com/question/12625048

#SPJ1

Here, we are required to describe a mechanical property of Kevlar that measures it's ability to absorb energy during deformation.

The impact-resitant properties of Kevlar have provided a premise for their use in personnel protection systems especially to resist ballistic impact. Absorption of energy during deformation is therefore the premise for the Impact-resistant property of Kevlar.

The woven nature of Kevlar is responsible for its stress-strain response which measures it's ability to absorb energy during deformation.

Ultimately, the mechanical property of Kevlar that measures it's ability to absorb energy during deformation is it's Impact-resistance as a result of it's Elasticity.

Read more:

https://brainly.com/question/22120858

Answer: The pressure is 1137.5 mm Hg its pressure if its volume is increased to 150 \(cm^{3}\) at 35 °C

Explanation:

Given: \(P_{1}\) = 750 mm Hg,    \(V_{1} = 130 cm^{3}\),     \(T_{1} = 20^{o}C\)

\(P_{2}\) = ?,          \(V_{2} = 150 cm^{3}\),            \(T_{2} = 35^{o}C\)

Formula used to calculate the new pressure is as follows.

\(\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\)

Substitute the values into above formula as follows.

\(\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\\\frac{750 mm Hg \times 130 cm^{3}}{20^{o}C} = \frac{P_{2} \times 150 cm^{3}}{35^{o}C}\\P_{2} = 1137.5 mm Hg\)

Thus, we can conclude that the pressure is 1137.5 mm Hg its pressure if its volume is increased to 150 \(cm^{3}\) at 35 °C.

Based on the given bright-line spectra and the observed wavelengths in the mixture's spectrum, the elements G and J are the ones present in the mixture.

From the given bright-line spectra and the spectrum of the mixture, we can determine the elements present in the mixture by comparing the specific wavelengths observed. Examining the bright-line spectra, we can identify that G has a distinct wavelength at 650 nm, J at 600 nm, L at 550 nm, and M at 500 nm.

Looking at the spectrum of the mixture, we can observe two prominent wavelengths, 650 nm and 600 nm. These correspond to the wavelengths of G and J, respectively. Since the spectrum of the mixture does not exhibit the wavelengths specific to L (550 nm) or M (500 nm), we can conclude that only G and J are present in the mixture.

Therefore, based on the given bright-line spectra and the observed wavelengths in the mixture's spectrum, the elements G and J are the ones present in the mixture.

This analysis relies on the principle that each element has characteristic wavelengths at which they emit light. By comparing the observed wavelengths in the mixture's spectrum with those of the individual elements, we can determine the elements present in the mixture.

Know more about wavelengths here:

https://brainly.com/question/10750459

#SPJ8

In the reaction 239/93 Np -> 239/94 Pu + X, the symbol "X" represents an electron. Option C is correct.

This reaction involves the radioactive decay of Neptunium-239 (239/93 Np) into Plutonium-239 (239/94 Pu). Specifically, it undergoes beta decay, which involves the emission of an electron.

During beta decay, a neutron in the Neptunium-239 nucleus is converted into a proton, and an electron (also known as a beta particle) is emitted. The electron carries a negative charge (-1) and is represented by the symbol "e^-" or simply "e". It balances the charge and atomic number in the reaction equation.

The balanced equation for the reaction is:

239/93 Np -> 239/94 Pu + 0/-1 e

So, in summary, the symbol "X" in the reaction 239/93 Np -> 239/94 Pu + X represents an electron (e^-) emitted during the beta decay of Neptunium-239.

For more question on electron click on

https://brainly.com/question/26084288

#SPJ11

COMPLETE QUESTION

in the reaction 239/93 Np -> 239/94 Pu+X, what does X represent

A. PROTON

B. POSITRON

C. ELECTRON

D. NEUTRON