Ethyl bromide forms when 1 molecule of ethene (C2H4) and 1 molecule of hydrobromide (HBr) react completely.

If ethyl bromide is the only product of the reaction, how many atoms are in 1 ethyl bromide molecule?

O

A 2

B. 3

C. 4

D. 8

The citation you provided is from a scientific paper titled "Atomically Thin p-n Junctions with van der Waals Heterointerfaces" by C.E.A. Lee, published in the journal Nature Nanotechnology in 2014.

The term "atomically thin" refers to the extremely thin nature of the junction, which is only a few atomic layers thick. This is made possible by the use of van der Waals heterointerfaces, which are interfaces between different layered materials held together by weak van der Waals forces. Examples of layered materials include graphene and transition metal dichalcogenides.

The paper explores the fabrication and characterization of these atomically thin p-n junctions, highlighting their potential for future electronic devices with high performance and low power consumption.

To know more about p-n Junctions visit:-

https://brainly.com/question/24303357

#SPJ11

Answer:

CO2 will form

Explanation:

come here ukg-qixc-yjg

The mass of Fe(NO3)2 is expressed as 24.7 kg, rounded to three significant figures.

In scientific notation, 24.7 kg can be written as 2.47 x 10^1 kg. The significant figures are determined by the non-zero digits in the number, which in this case is three: 2, 4, and 7. The exponent 1 represents the number of decimal places the decimal point has been moved to the right to convert from 24.7 to 2.47.

Expressing the mass to three significant figures ensures that the measurement is accurate and allows for appropriate precision in reporting the value. It indicates that the measurement was made with certainty up to the third decimal place.

Learn more about number here: brainly.com/question/10547079

#SPJ11

The computers that help control the machines in the factory

Answer:

it depends on mass and speed

Boyle's Rule, A balloon serves as an illustration of Boyle's rule in action. The balloon is inflated with air, and as the air pressure presses on the rubber, the balloon expands.

Charles's law can be observed in action in a gas thermometer, which uses a gas's volume change to show a change in temperature. It can also be observed more practically by freezing a balloon containing gas and seeing the balloon's volume decrease.

Because the average kinetic energy of the gas molecules in a balloon drops as the temperature rises, the frozen balloon shrank. Due to this, the molecules move more slowly and encounter the interior walls of objects less frequently and with weaker force.

to know more about Boyle's law here:

brainly.com/question/1437490

#SPJ4

The actual yield of the oxygen in the reaction is 4.32 g.

The equation of the reaction is;

Ba(ClO3)2 → BaCl2 + 3O2

Now we have that ;

Number of moles of the barium chlorate is;

Number of moles = mass/Molar mass

= 15 g/304 g/mol

= 0.049 moles

If 1 mole of barium chlorate produced 3 moles of oxygen

0.049 moles of barium chlortae will produce 0.049 * 3/1

= 0.147 moles

Mass of the oxygen produced = 0.147 moles * 32 g/mol

= 4.7 g

Then we have that;

Percent yield = Actual/Theoretical * 100/1

92 = x/4.7 * 100/1

92 * 4.7 = 100x

x = 92 * 4.7/100

x = 4.32 g

Learn more about actual yield:https://brainly.com/question/2920455

#SPJ1

Answer:

False for the first, true for second.

Explanation:

ATP is cellular energy and it needs to be recharged after it is used. That half dead is called adp.

The statement energy is released from ATP when it reacts with water to produce ADP is False, while the statement the information that cells need to direct their metabolic process is stored in RNA is True.

ATP is the energy source of cells generated by cellular respiration and anaerobic processes, while  RNA is a molecule obtain by the transcription process which is used to generate proteins during metabolic activities such as differentiation.

Therefore, with this data, we can see that ATP is the energy coin of cells, while cells generate RNA during transcription.

Learn more about ATP here:

https://brainly.com/question/897553

#SPJ1

Answer:

102.58 cal.

Explanation:

Given data:

Mass of mercury = 622 g

Initial temperature = 37°C

Final temperature = 42°C

Specific heat capacity of mercury = 0.138 J/g.°C

Energy required = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 42°C - 37°C

ΔT = 5°C

Q = 622 g × 0.138 J/g.°C × 5°C

Q = 429.18 J

J to cal:

429.18 J × 1 cal /4.184 j

102.58 cal.

Answer:

The answer should be D

Explanation:

because turning 1 mole of propane to grams means its still one mole of propane just in a different unit.

303K − 273.15 = 29.85°C

45K − 273.15 = -228.1°C

To prepare the pH 4.00 buffer solution, you should mix approximately 61.35 mL of the 0.100 M benzoic acid solution with 38.65 mL of the 0.240 M sodium benzoate solution.The ratio of benzoic acid to sodium benzoate in the buffer solution using the Henderson-Hasselbalch equation.

To prepare a pH 4.00 buffer solution using benzoic acid and sodium benzoate, we need to calculate the appropriate volumes of the 0.100 M benzoic acid and 0.240 M sodium benzoate solutions.

First, we need to determine the ratio of benzoic acid to sodium benzoate in the buffer solution. The Henderson-Hasselbalch equation can help us with this calculation:

pH = pKa + log([A-]/[HA])

Given that the pH is 4.00 and pKa is 4.20, we can rearrange the equation:

log([A-]/[HA]) = pH - pKa

log([A-]/[HA]) = 4.00 - 4.20

log([A-]/[HA]) = -0.20

Next, we take the antilog of -0.20 to find the ratio of [A-] to [HA]:

[A-]/[HA] = antilog(-0.20)

[A-]/[HA] = 0.63

The ratio of [A-] to [HA] is 0.63.

Now, let's calculate the volumes of each solution needed. Let's assume x represents the volume (in mL) of the 0.100 M benzoic acid solution and y represents the volume (in mL) of the 0.240 M sodium benzoate solution.

Since the total volume is 100.0 mL, we have the equation: x + y = 100

Considering the ratio of [A-] to [HA] as 0.63, we can write the equation: y/x = 0.63

Solving these two equations simultaneously will give us the volumes of each solution:

x + y = 100

y/x = 0.63

By substituting y = 0.63x from the second equation into the first equation, we get:

x + 0.63x = 100

1.63x = 100

x = 61.35 mL (rounded to two decimal places)

Substituting this value back into the equation x + y = 100, we find:

61.35 + y = 100

y = 38.65 mL (rounded to two decimal places)

Therefore, to prepare the pH 4.00 buffer solution, you should mix approximately 61.35 mL of the 0.100 M benzoic acid solution with 38.65 mL of the 0.240 M sodium benzoate solution.

To know more about the Henderson-Hasselbalch equation, click here, https://brainly.com/question/31732200

#SPJ11

RADIATION ❤️

We know that radiation is defined as he transfer of heat energy by electromagnetic radiation.

A. the initial cell potential is 0.555V, B. the cell potential becomes 0.360V and C. the concentrations of Pb²⁺ and Cu²⁺ when the cell potential falls to 0.360V are 1.64M.

Voltaic is a form of electricity produced by chemical reactions. It is a type of direct current (DC) electricity, meaning it is a unidirectional flow of electric charge. It is produced when two electrodes, usually made of different metals, are placed in an electrolyte solution. The electrolyte solution allows charged particles to move between the two electrodes, creating an electric current.

where \(E^\circ_{cell\) is the standard cell potential, R is the gas constant, T is the temperature in Kelvin, n is the number of moles of electrons transferred in the reaction, F is the Faraday constant, and Q is the reaction quotient.

For this cell, the standard cell potential is \(E^\circ_{cell\) = +0.34V and n = 2. Therefore, the initial cell potential is:

\(E_{cell} = 0.340 - (8.314times298/2times96485) ln(0.0510times1.70)\)

\(E_{cell} = 0.340 - (0.0592) ln(0.0867)\)

\(E_{cell} = 0.340 - (-0.215)\)

\(E_{cel}l = 0.555V\)

B) To calculate the cell potential when the concentration of Cu²⁺ has fallen to 0.240M, we again use the Nernst equation as before. However, now the reaction quotient is Q = 0.240/0.0510, and the cell potential becomes:

\(E_{cell} = 0.340 - (0.0592) ln(0.240/0.0510)\)

\(E_{cell} = 0.340 - (0.0592) ln(4.706)\)

\(E_{cell} = 0.340 - (0.0592*1.68)\)

\(E_{cell} = 0.340 - (0.0592*1.68)\)

C) To calculate the concentrations of Pb²⁺ and Cu²⁺ when the cell potential falls to 0.360V, we use the Nernst equation again, but this time we solve for Q.

\(E_{cell} = 0.340 - (0.0592) lnQ\)

0.360 = 0.340 - (0.0592) lnQ

lnQ = (0.340 - 0.360)/(-0.0592)

lnQ = -0.0317

Q = \(e^{(-0.0317)\)

Q = 0.969

Therefore, the concentrations of Pb²⁺ and Cu²⁺ when the cell potential falls to 0.360V are:

[Pb²⁺] = 0.969*0.0510 = 0.047M

[Cu²⁺] = 0.969*1.70 = 1.64M

To learn more about voltaic

https://brainly.com/question/28302418

#SPJ4

Answer:

C Nitrogen Molecule

Explanation:

N2 is a nonpolar molecule because it is a linear diatomic molecule.  Since both atoms are identical and the bond is linear, there is no net charge to the molecule.

Answer:

The melting properties of agar make it useful for growing bacteria in a lab.

Explanation:

Answer:

3.97xx10^-7 meters

Explanation:

Answer:

50.1 mega meters

Explanation:

moving the decimal to the right

Answer:

The answer is B. 1,2,6,9,27,54

Explanation:

The compound that does not undergo an aldol addition reaction in the presence of aqueous sodium hydroxide is chlorobutanal.

Aldol reactions typically involve compounds with alpha-hydrogens, which chlorobutanal lacks due to the presence of a chlorine atom at the alpha position. The other compounds, butanal, methylbutanal, and bromobutanal, can participate in aldol reactions as they have alpha-hydrogens available.

Aldol addition process with aqueous sodium hydroxide present. This is due to the presence of alpha-hydrogens in both of these compounds, which are required for the aldol reaction to take place. Alpha-hydrogens are connected to the carbon next to the carbonyl group.

Aldol condensations are crucial in the synthesis of organic molecules as they offer a consistent method for forming carbon-carbon bonds. Aldol condensation, for instance, is produced by the Robinson annulation reaction sequence, and the Wieland-Miescher ketone product is crucial to several chemical synthesis procedures.

The process for the aldol addition product and the aldol condensation product in the aldol reaction between a 2-methyl pentanal and a 2-bromopentanal is discussed.

Learn more about Aldol addition process here

https://brainly.com/question/31701533

#SPJ11

The maximum production rate of acetyl-CoA under condition 1 is closest to 1 micromole/sec.

The correct option is A.

The maximum production rate of acetyl-CoA under condition 1 is determined from the reaction conditions.

For Condition 1:

The maximum concentration of acetyl-CoA is 60 micromoles

The time taken to reach the maximum concentration of acetyl-CoA is 60 seconds.

The maximum production rate of acetyl-CoA under condition 1 can be calculated by dividing the maximum concentration of acetyl-CoA (60 micromoles) by the time taken (60 seconds):

Maximum production rate = 60 micromoles / 60 seconds = 1 micromole/second

Learn more about the rate of reaction at: https://brainly.com/question/12904152

#SPJ1

The number of the hydrogen atoms that would be required from the diagram is 10.

A Saturated compound has all its carbon atoms connected by single bonds, and each carbon atom is bonded to the maximum number of hydrogen atoms possible. This arrangement allows the compound to have no available or unsaturated bonds for additional atoms.

The compound that is shown must be butane as such the number of the hydrogen atoms that it contains is a total of ten.

Learn more about hydrocarbon:https://brainly.com/question/32019496

#SPJ1

The molar mass of the monoprotic acid is 97.86 g/mol.

Determine the number of moles of KOH used.

To calculate the number of moles of KOH, we multiply the volume of the solution (30.6 mL) by its molarity (0.07745 M):

0.0306 L × 0.07745 mol/L = 0.0023727 mol

Determine the number of moles of the acid.

Since KOH and the acid have a 1:1 stoichiometric ratio, the number of moles of the acid is equal to the number of moles of KOH.

Calculate the molar mass of the acid.

The molar mass is calculated by dividing the mass of the sample (0.2381 g) by the number of moles of the acid (0.0023727 mol):

Molar mass = 0.2381 g / 0.0023727 mol = 100.48 g/mol

Learn more about moles of KOH

brainly.com/question/29446889

#SPJ11

Answer:

The rocks contain iron that points in the direction the rocks move away from the ridge.

The most vulnerable species to overexploitation among the given options is option c Tuna.

Overexploitation is the act of exploiting natural resources faster and more than they can be replenished. The process leads to the depletion of the natural resources, and the species becomes vulnerable to extinction.Explanation:Tuna is the species that is most vulnerable to overexploitation among the given options. Tuna is one of the most valuable fish globally and is among the most consumed fish species.

As a result, the tuna population has decreased rapidly due to overfishing.Overfishing is the main reason behind the depletion of tuna populations in many parts of the world. Moreover, tuna is among the species that are on the verge of extinction. Therefore, overexploitation can lead to a drastic decline in the population of tuna and, as a result, making the species vulnerable to overexploitation.The correct answer is c.

Know more about  extinction   here:

https://brainly.com/question/32832919

#SPJ8

The correct answer is Carbon Monoxide (CO). When organic matter is burned with insufficient oxygen, it leads to incomplete combustion and the production of various gases, including carbon monoxide. Carbon monoxide is a colorless, odorless gas that is extremely poisonous and can be fatal in high concentrations.Carbon dioxide (CO2) is a product of complete combustion and is not produced when there is insufficient oxygen.Benzene is a hydrocarbon compound composed of six carbon atoms and six hydrogen atoms, and it is not produced from combustion.Methane (CH4) is a hydrocarbon compound composed of one carbon atom and four hydrogen atoms, and it is not produced from combustion.Mercury is a metallic element and is not related to combustion.

Answer:

9.370 x 10 to the 23 molecules

Explanation:

91.72/1 x 1 mole Co/58.933g x 6.02 x 10 to the 23/1 mole Co

Answer:

Explanation:

Mass 1 mole of CO

C = 12

O = 16

m = 28

Mols of 91.72 grams

m = given Mass / Molar Mass

m = 91.72 / 28

m = 3.28 mols

Molecules

1 mol of anything is 6.02 * 10^23 molecules (in this case)

3.28 mol of CO = x

1/3.28 = 6.02*10^23/x      Cross multiply

x = 3.28 * 6.02 * 10^23

x = 1.97 * 10^24

A solid with a highly organized set of particles is crystalline. Thus the right option as the solution is B.

An atom is the smallest unit of matter that can be divided without the release of any electrically charged particles such as protons, neutrons, electrons, etc.

Crystalline solids are solids with a highly ordered arrangement of the particles (atoms, ions, and molecules) in microscopic structures of the solid

Isotopes are molecules with the same atomic number but a different atomic mass

Molecules are structures that are formed by one or more atoms. If they contain more than one atom, the atoms can be the same or different atoms.

Learn more about crystalline solids:

https://brainly.com/question/12759602

#SPJ1

The complete question is:

Which option describes a solid with a highly organized set of particles? choices are a) atom b) crystal c) isotope d) molecule​

Answer:

B) I'm not to sure though

Answer:

magnesium

Explanation:

it is the only metal in the choices. everything else is on the right side of the old line that separates metals and nonmetals on the PPT. nonmetals aren't, shiny or good conductors or malleable or ductile.  only metals can have those qualities. the only metal is magnesium