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The theoretical yield of cyclohexene is 23.5 g and the percentage yield is 51.06%, the complete reaction is: C₆H₁₀ + Br₂ → C₆H₁₀Br₂, and the two applications of cyclohexene are: Production of nylon, and solvent.

To calculate the theoretical yield of cyclohexene: Convert the volume of cyclohexanol used to mass, using its density (0.962 g/mL): 20.0 mL x 0.962 g/mL = 19.24 g

Calculate the number of moles of cyclohexanol used: 19.24 g / 82.19 g/mol = 0.234 mol

Use the stoichiometry of the reaction to determine the number of moles of cyclohexene that should be produced, assuming 100% yield. The balanced equation is: Cyclohexanol (C₆H₁₁OH) → Cyclohexene (C₆H₁₀) + H₂O

For every 1 mole of cyclohexanol used, 1 mole of cyclohexene should be produced.

Calculate the theoretical yield of cyclohexene in grams: 0.234 mol x 100.2 g/mol = 23.5 g

To calculate the percentage yield of cyclohexene: Divide the actual yield of cyclohexene obtained (12.0 g) by the theoretical yield (23.5 g), and multiply by 100 to get the percentage: (12.0 g / 23.5 g) x 100 = 51.06%

The reaction for bromine test between cyclohexene and bromine is: C₆H₁₀ + Br₂ → C₆H₁₀Br₂

This reaction results in the addition of the bromine molecule across the double bond in cyclohexene, forming a dibrominated product.

Two applications of cyclohexene are:

Production of nylon: Cyclohexene is used in the production of adipic acid, which is a key component in the production of nylon fibers and plastics.

Solvent: Cyclohexene is used as a solvent in various chemical reactions and in the manufacturing of some pharmaceuticals.

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Answer:

The interpretation of the particular subject is covered in the subsection below in detail.

Explanation:

Answer:

shale and siltstone

Explanation:

The Triceratops dinosaur fossils are approximately 70 million years old, because they are found in shale and siltstone that contain volcanic ash radiometrically dated at 70 million years.

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, in shale and siltstone, Scientists would most commonly find a fossil of triceratops.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter.

Scientists would most commonly find a fossil of triceratops in shale and siltstone that contain volcanic ash radiometrically dated at 70 million years.

Therefore, in shale and siltstone, Scientists would most commonly find a fossil of triceratops.

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Answer:

Explanation:

During sexual reproduction the two gametes join together in a fusion process known as fertilization, to create a zygote, which is the precursor to an embryo offspring, taking half of its DNA from each of its parents. In humans, a zygote contains 46 chromosomes: 23 from its mother and 23 from its father

Answer:

NaF

may be this helpful!

The correct way to represent the ionic compound sodium fluoride is NaF (Na+ and F- ions).

The correct way to represent the ionic compound sodium fluoride is NaF. In this compound, sodium (Na) and fluoride (F) form an ionic bond. Sodium is a metal from Group 1 of the periodic table, while fluoride is a non-metal from Group 17.

Ionic compounds consist of positively charged ions (cations) and negatively charged ions (anions) held together by electrostatic attractions. In NaF, sodium loses one electron to become a sodium cation (Na+), while fluoride gains one electron to become a fluoride anion (F-). The resulting compound, NaF, consists of Na+ and F- ions arranged in a crystal lattice structure.

The chemical formula NaF represents the stoichiometric ratio of sodium to fluoride in the compound. It indicates that for every sodium cation, there is one fluoride anion present.

NaF is commonly used as a source of fluoride in various applications, including water fluoridation, toothpaste, and as a component in certain industrial processes.

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J.J. Thomson discovered electrons and their negative charge through the cathode ray experiment, leading to the development of the plum pudding model of the atom.

J.J. Thomson, a British physicist, was the first to discover electrons in 1897.

He conducted the cathode ray experiment to identify the negatively charged particles.

The cathode ray tube is a vacuum-sealed glass tube with two electrodes at each end: a cathode and an anode.

When a high voltage electrical current is applied to the electrodes, the tube glows, indicating that the cathode rays are being emitted from the cathode and traveling through the tube towards the anode.

The cathode rays were found to have a negative charge, according to Thomson.

These rays were identified as particles by the presence of a magnet, which caused the particles to bend in the direction opposite to the magnet's polarity.

This discovery indicated that the particles had a charge on them because they were deflected by the magnetic field, which is only possible if the particles have an electric charge.

Thomson further concluded that these particles were about 1,000 times smaller than hydrogen atoms because of the degree of deflection they experienced in the magnetic field.

Furthermore, Thomson created the plum pudding model of an atom, in which electrons are dispersed throughout a positively charged matrix, based on his findings.

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Answer:

7.71x10^23 molecules

Explanation:

Avogadro's # = 6.022x10^23

1.28 mol SiO2 x 6.022x10^23/ 1 mol SiO2 = 7.71x10^23 molecules

Answer:

it defuse at a rate of 0.0002 m/s

The final pressure of the gas is obtained as 4.80 atm.

We know that the root mean square speed of the gas would depend on the temperature of the molecules of the gas. Here we are told that the root mean square speed of the gas molecules is doubled and it means that the temperature was also doubled.

We have;

P1/T1 =P2/T2

2T1 = 2P1

The final pressure would  be 2(2.40)atm = 4.80 atm

Thus we ought to have the temperature at the end as 4.80 atm from the calculation that has been done.

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Answer:

101.10200

Explanation:

Identify the molar mass of K, N, and O on the periodic table

K = 39.0983

N = 14.0067

O3 = 15.999×3 = 47.99700

Add them all together

39.0983+14.0067+47.99700 = 101.10200

Answer:

Explanation:

We can see that this picture can be used to show Ohm's Law graphically so it illustrates Ohm's  Law.

According to Ohm's Law electric current is directly proportional to voltage and inversely proportional to resistance.

Mathematically, V ∝ I,

or                       V=IR,

where,       V  ⇒ voltage difference between two points,

                 I  ⇒ current flowing through the resistance,

                 R ⇒ proportionality constant or resistance.

According to the picture voltage ( SI unit Volt ) is supporting the current  ( SI unit Ampier ) to move out from the barrier while the resistor ( SI unit Ohm )is acting as a barrier to its way . As it is satisfying the Ohm's Law it illustrates the relationship between voltage, current, and resistance.

According to the Foliated Metamorphic Rock Chart slate, phyllite, schist, and gneiss can all have the same parent rock (shale) is a true statement.

Slate, phyllite, schist, and gneiss are all types of metamorphic rocks that can be formed from shale, which is a sedimentary rock composed of clay and other fine-grained minerals. The specific type of metamorphic rock that is formed from shale depends on the conditions under which the shale undergoes metamorphism, including the temperature, pressure, and presence of fluids.

Slate is a fine-grained metamorphic rock with a uniform, flat surface and a layered structure. It is formed when shale undergoes low-grade metamorphism, which occurs at relatively low temperatures and pressures.

Therefore, Gneiss, on the other hand, is a medium- to coarse-grained metamorphic rock with a banded or wavy texture. It is formed when shale undergoes high-grade metamorphism, which occurs at higher temperatures and pressures.

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The amount of energy required to change 20g of water to steam is +150 KJ/mol. The standard heat of vaporization of water is 7.5 KJ/mol.

The amount of energy required to convert a liquid to a vapour at constant temperature and pressure is known as latent heat. The heat of fusion is the energy required to convert a solid to a liquid, and the heat of sublimation is the energy required to convert a solid to a gas.

Given:

q = 150 KJ/mol.

m = 20gram

The standard heat of vaporization of water is calculated by given formula

Hv = q / m

Where,

Hv is heat of vaporization of water

q is heat energy

m is mass

By substituting given value in equation we get,

Hv = 150 / 20

= 7.5 KJ/mol

Thus, the standard heat of vaporization of water is 7.5 KJ/mol.

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The bullet would have more kinetic energy if it were heated because it would get hotter.

Kinetic energy, which may be seen in an object, particle, or group of particles moving, is the energy of motion. Kinetic energy is used by any moving item, such as a person walking, a baseball being thrown, a piece of food falling from a table, or a charged particle in an electric field.

An object in motion has energy called kinetic energy. Kinetic energy can be found in the motion of molecules in space, you walking down the street, and the earth rotating around the sun. Kinetic energy (K.E.) is directly proportional to an object's mass and the square of its velocity: K.E. = 1/2 m v2.

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Answer:

right now we are using energy by online learning on our laptops , air conditioning, and transportation

Explanation:

Answer: There are 3019.2 atoms of iron.

Answer:

Explanation:

Iron is a ductile, malleable, silver-white metallic element, scarcely known in a pure condition, but much used in its crude or impure carbon-containing forms for making tools, implements, machinery, etc. Symbol: Fe; atomic weight: 55.847; atomic number: 26; specific gravity 7.86 at 20°C.

1 mol contains \(=6.02\times10^{23}\) particles, whether it be atoms, ions, molecules or whatever (Avogadro's number).

So you just divide:

\(\frac{2.96\times10^{20}}{6.02\times10^{23}}\) = = 4.9169435215947 × 10^-4

The freezing point of 0.520M aqueous solution of NaCl is -0.97°C.

Freezing point is the temperature at which a liquid freezes, and the solid and liquid phases are in equilibrium; it is normally the same as the melting point.

To calculate the freezing point of a solution, we can use the following formula;

∆T = K m

Where;

According to this question, the molality of a solution is 0.52m.

∆T = 1.86°C/m × 0.52m

∆T = 0.967°C

Freezing point = 0.0°C - 0.97°C

Freezing point = -0.97°C

Therefore, -0.97°C is the freezing point of the solution.

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Answer:

-1.934

Explanation:

0 - {(0.520) x (1.86) x (2)}

Answer:

An electrolyte is medium containing ions that is electrically conducting through the movement but not conducting electrons . Strong electrolytes are electrolytes that completely ionizes in a solution . Weak electrolytes that partially ionize in a solution .

Explanation:

Strong electrolytes fully dissociate In a solution such as NH4Cl , KOH(Potassium hydroxide) and HCl ( Hydrochloric acid)

Weak electrolytes partially dissociate In a solution such as HC2H3O2 (acetic acid), H2CO3 (carbonic acid), NH3 (ammonia), and H3PO4 (phosphoric acid) .

Answer:

A ---->gamma ray

Explanation:

Gamma rays have the highest frequencies among all electromagnetic waves and therefore have the shortest wavelengths.

Answer:

Cu₂O.

Explanation:

copper = 7.298

copper oxide = 8.217

oxygen in copper oxide = .919 g

7.298 g of copper = 7.298 / 63.5 mole of copper

= .1149 mole of copper

.919 g of oxygen = .919 / 16 mole of oxygen

= .0574 mole of oxygen

ratio of mole of copper and oxygen

= .1149 / .0574 = 2

formula of copper oxide = Cu₂O.

Explanation:

Time = Distnace ×speed

so distance is 2000m

and speed is 100

so 100×2000

time = 200000s

The structural features which contributes to a high thermal conductivity are the direction of travel of heat and the nature of materials.

This is referred to as a measure of its ability to conduct heat or current and it is dependent on some factors such as the nature of the materials.

For example , metals conduct heat and electricity easily because the materials allow free electrons to move between the atoms and also the direction of travel of heat which is towards them is also a factor in this regard.

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Answer:

pls the image didn't come

Explanation:

ols the. atom's image didn't appear

Answer:

1. 0.14 g of NO2.

2. 0.27 g of CO2.

Explanation:

The balanced equation for the reaction is given below:

2C8H10N4O2 + 27O2 —> 16CO2 + 10H2O + 8NO2

Next, we shall determine the mass of caffeine, C8H10N4O2 that reacted and the masses of nitrogen (iv) oxide, NO2 and carbon (iv) oxide, CO2 produced from the balanced equation. This can be obtained as follow:

Molar mass of of C8H10N4O2 = 194.19 g/mol

Mass of C8H10N4O2 from the balanced equation = 2 × 194.19 = 388.38 g

Molar mass of CO2 = 44.01 g/mol

Mass of CO2 from the balanced equation = 16 × 44.01 = 704.16 g

Molar mass of NO2 = 46.01 g/mol

Mass of NO2 from the balanced equation = 8 × 46.01 = 368.08 g

Summary:

From the balanced equation above,

388.38 g of caffeine, C8H10N4O2 reacted to produce 704.16 g of CO2 and 368.08 g of NO2.

1. Determination of the mass of NO2 produced from the reaction.

This can be obtained as follow:

From the balanced equation above,

388.38 g of caffeine, C8H10N4O2 reacted to produce 368.08 g of NO2.

Therefore, 0.15 g of caffeine, C8H10N4O2, will react to produce = (0.15 × 368.08) / 388.38 = 0.14 g of NO2.

Therefore, 0.14 g of NO2 was obtained from the reaction.

2. Determination of the mass of CO2 produced from the reaction.

This can be obtained as follow:

From the balanced equation above,

388.38 g of caffeine, C8H10N4O2 reacted to produce 704.16 g of CO2.

Therefore, 0.15 g of caffeine, C8H10N4O2, will react to produce = (0.15 × 704.16) / 388.38 = 0.27 g of CO2.

Therefore, 0.27 g of CO2 was obtained from the reaction.

Ionization potential and ionization energy are two terms used to describe the same thing.

The ionization potential of hydrogen atom is 13.6 eV

The ionization potential is the energy that is required to remove an electron from the neutral atom. It is the same as the ionization energy.

From the question, we can see that the ionization energy of the hydrogen atom is 13.6 eV, it also means that the ionization potential of the hydrogen atom is also 13.6 eV.

Therefore, If ionization energy of hydrogen atom is 13.6 eV then its ionization potential will be 13.6 eV

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The heat capacity for the metals are;

Aluminum -  0.89

Copper - 0.11

Iron - 0.44

Lead - 0.12

The specific heat of a substance is denoted by the symbol "C" and is typically measured in units of J/g·°C (joules per gram per degree Celsius) or cal/g·°C (calories per gram per degree Celsius).

The specific h

We have that;

For Aluminum;

c = 4.184 * 39.85 * 4.7/11.98 * 72.9

= 783.6/873.3

= 0.89

For Copper;

c =  4.184 * 12.14 * 1.9/12.14 * 75.4

= 96.5/915.3

= 0.11

For Iron

c =  4.184 * 40.24 * 2.4/12.31 * 75.1

= 404.1/924.5

= 0.44

For Lead

c = 4.184 * 39.65 * 0.7/12.46 * 76.7

c = 116.1/955.68

= 0.12

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