Benzene can be converted to 1,3,5-tribromobenzene in five reaction steps and four intermediate compounds. Select the appropriate reagent from the followings.

Br2, R2O2
CH3Cl, AlCl3
CH3COCl, AlCl3
NaNO2, HCl
HNO3, H2SO4
H3PO2
H3PO4
KMnO4

Answer:

A

Explanation:

liquids thake the shape of what holds them so shape is changing and volume is the same

Answer:

V = 1.79 L

Explanation:

Given data:

Volume of gas = ?

Number of moles of gas = 0.080 mol

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

1 atm × V = 0.080 mol × 0.0821 atm.L/ mol.K  × 273.15 K

V = 1.79  atm.L / 1 atm

V = 1.79 L

The molar mass is 3230.8 g/mol

First, we need to know that the formula for the general gas law  is represented as;

PV = nRT

such that the parameters are;

Substitute the values

1 × 2.33 = n × 8.314 × 433.15

Multiply the values, we get;

n = 2.33/ 8.314 × 433.15

Divide the values

n = 6.5 × 10⁻⁴ moles

But, number of moles = mass/molar mass

Molar mass = 2.10/ 6.5 × 10⁻⁴

Molar mass = 3230.8 g/mol

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Steps in separating this mixture include:

A method for extracting sulphate of lead, ammonium chloride and ammonium sulphate out of three different components involves dissolving them first in water before adding sodium sulfate which then leads to formation of solid particles - namely Precipitated Lead Sulfate (PbSO4).

The next step requires removing these particles by employing a filtration process before including Hydrochloric Acid (HCl) so as to derive Ammoniated Lead Chloride (NH4PbCl3).

Again use filtration process on this compound as well followed up with yet another addition step involving Hydrochloric Acid which results in creation of Ammoniated Salt NH4Cl crystals into solution - collect these small gemstones via filtration before undergoing drying procedure thus achieving final products.

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Answer: an orbital notation of the atom

Explanation:

If Chuck wants to know how many electrons in an atom are not paired up, the model that would be best for Chuck to write out is an orbital notation of the atom.

Orbital notation is simply utilized to write the configuration of an electron so that certain information regarding the electrons that are contained in the atom of an element can be known. It should also be noted that the orbital notation can help in knowing an electron's quantum numbers.

Therefore, the answer is "an orbital notation of the atom".

Answer:

an orbital notation of the atom

Explanation:

After considering the results of the classification tests, the possibilities can be narrowed down further by determining the melting point of the B Schiff addition product.

A compound's melting point is helpful in two ways: it provides information on the composition's identity and degree of purity. Impurities will affect a compound's melting point, resulting in broader and lower melting point ranges.

First, the solubility test must be performed in order to remove soluble contaminants from the target molecule. The desired chemical and the soluble impurities are dissolved in a minimum of near or boiling solvent once a suitable solvent has been selected. The solution is then given time to gradually cool.

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The frequency of gamma radiation is calculated to be = 1.11 *10^20 Hz.

A gamma radiation is also known as gamma ray. It is a penetrating form of electromagnetic radiation arising from radioactive decay of atomic nuclei. It consists of shortest wavelength electromagnetic waves, even shorter than X-rays.

Gamma rays can pass through the human body completely and as they pass through, they cause ionizations that damage tissue and DNA.

As we know that E= hf

Hence, f= E/h

Given E=  6.96 x 10-14 J

And, Planck's constant, h = 6.626 *10^-34 m² kg/s

f = 6.96 * 10^-14J  +/6.626 *10^-34

f = 1.11 *10^20 Hz

Hence, frequency of gamma radiation = 1.11 *10^20 Hz.

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Basically, we need to compare the following concepts. Fission and fusion.

Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy.

And, we could notice that:

- The main difference between these two processes is that fission is the splitting of an atom into two or more smaller ones while fusion is the fusing of two or more smaller atoms into a larger one.

- A similarity could be the fact that both reactions are nuclear reactions.

The following Venn's diagram could represent some similarities and differences of these reactions:

Answer:

Types of Potential Energy

Elastic Potential Energy. Anything that can act like a spring or a rubber band can have elastic potential energy. ...

Gravitational Potential Energy. There is a constant attractive force between the Earth and everything surrounding it, due to gravity. ...

Chemical Potential Energy.

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Answer: building block of matter was a particle called the atom.

Explanation: I hope this helps:)

Answer:I hope it will be beneficial for you

Force of attraction between the particles of solid is very strong the particles of solid are held together by strong inter molecular forces leading to the formation of a rigid structure

Force of attraction between the particles of the liquid is weak as compare to solids there particles are far away from each other and have the property to move easily.

Force of attraction between the particles of gases is very weak than the two states hence the particles of gases are highly compressible having week intermolecular interaction between them and have indefinite shape and volume

Answer:

Forces between particles in Liquids are closely packed  compared to other states of matter like the liquid and gaseous state of matter.

Explanation:

The mass of Aluminum Sulfate is 5.373 grams if you have \(2.837*10^{26\) atoms of Sulfur .

The molecular formula of Aluminum Sulfate is \(Al_2(SO_4)_3.\) In one molecule of aluminum sulfate, there are 3 sulfur atoms. To calculate the mass of aluminum sulfate, follow the steps below:

Step 1: Calculate the molar mass of aluminum sulfate using the periodic table.Al = 27.0 g/molS = 32.1 g/molO = 16.0 g/mol

(2 × Al) + (3 × S) + (12 × O) = molar mass of \(Al_2(SO_4)_3.\) = 342.2 g/mol

Step 2: Find the number of moles of sulfur in the given number of atoms of sulfur.2\(2.837*10^{26\) atoms of sulfur × 1 mol S/\(6.022 * 10^{23\)atoms S = 0.0470 mol S

Step 3: Use the molar ratio of sulfur to aluminum sulfate to calculate the number of moles of aluminum sulfate.1 mol \(Al_2(SO_4)_3.\) / 3 mol S = 0.333 mol\(Al_2(SO_4)_3.\) per mol S0.0470 mol S × 0.333 mol \(Al_2(SO_4)_3.\)/mol S = 0.0157 mol \(Al_2(SO_4)_3.\)

Step 4: Calculate the mass of aluminum sulfate.0.0157 mol \(Al_2(SO_4)_3.\) × 342.2 g/mol\(Al_2(SO_4)_3.\)= 5.373 g\(Al_2(SO_4)_3.\)

Therefore, the mass of Aluminum Sulfate is 5.373 grams if you have \(2.837*10^{26\) atoms of Sulfur.

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Answer:

First, we need to determine the molar mass of HCl.

The molar mass of HCl = the mass of hydrogen (1.008 g/mol) + the mass of chlorine (35.45 g/mol) = 36.45 g/mol.

Next, we can use Avogadro's number (6.02 x 10^23 molecules/mol) to convert the number of molecules to moles:

6.02 x 10^24 molecules / 6.02 x 10^23 molecules/mol = 10 moles

Finally, we can use the molar mass to convert moles to grams:

10 moles x 36.45 g/mol = 364.5 grams

Therefore, the mass of 6.02 x 10^24 molecules of HCl is 364.5 grams.

Answer:

A chemical bond forms when there is a net attractive force between two or more atoms due to the interaction of their electrons. This attractive force results from the balancing of two opposing forces: electron-electron repulsions and electron-nucleus attractions.

Explanation:

The repulsion between electrons arises from their negatively charged nature, which results in a repulsive force when two electrons are close together. On the other hand, the attraction between electrons and nuclei is due to the positively charged nuclei attracting the negatively charged electrons.

When the attractive force between electrons and nuclei overcomes the repulsive force between electrons, the energy of the system decreases, and a chemical bond is formed. This decrease in energy is reflected in a lower potential energy of the system, indicating that the bond is more stable than the individual atoms.

Therefore, the formation of a chemical bond can be understood as the result of an attractive force between the electrons and nuclei of the atoms, which leads to a decrease in potential energy and a more stable, lower-energy state.

Answer:

decreases by 10 gram

Explanation:

Answer:

HE

Explanation:

HE is a noble gas

x = 10, y = 20/6

Given

one number is three times of the other

their arithmetic mean is 10

Required

The numbers

Solution

Suppose the numbers you are looking for are x and y, then :

x = 3y (equation 1)

The arithmetic mean : the average of values

(x+3y)/2=10

x+3y = 20 (equation 2)

Substitute equation 1 into equation 2

3y+3y=20

6y=20

y = 20/6

from equation 1 :

x= 3 x 20/6

x = 60/6

x = 10

at room temperature, potassium is a soft solid, classified as a metallic solid

At room temperature, potassium (K) is classified as a metallic solid. Therefore, option (1) is correct.

Potassium can be described as a chemical element with the chemical symbol K and atomic number 19. Potassium (K) is a silvery-white metal, it is soft and can be cut with a knife with little force.

Potassium reacts with atmospheric oxygen to form white potassium peroxide in only seconds of exposure. In the periodic table, potassium element is one of the alkali metals that have a single valence electron in the outer electron shell.

Potassium occurs only in the form of ionic salts in nature and reacts vigorously with water, generating sufficient heat. Potassium is a soft solid with a low melting point. It has metallic bonds in its lattice. The metallic bonds are formed between the electrons and positively charged potassium metal. Therefore,  potassium is classified as a metallic solid.

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The cart with the fastest acceleration is 5 kg cart because its mass is the smallest.

Mass can be experimentally defined as a measure of the body's inertia, meaning the resistance to acceleration when a net force is applied.

The parameters given include;

applied force, F_ = 90 N

mass of cart: 5kg, 6kg, 8 kg, 9 kg

According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object.

F_ = ma

The acceleration of the 5 kg cart is calculated as follows;

a = f_ /mass

a = 90/5

a= 18m/s²

The acceleration of the 6 kg cart is 15 m/s² (using Newton's second law)

The acceleration of the 8 kg cart is 11/25 m/s² (using Newton's second law)

The acceleration of the 9 kg cart is 10m/s² (using Newton's second law)

Therefore, the cart with the fastest acceleration is 5 kg cart because its mass is the smallest.

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Complete question:

A force of 90N is applied to each cart below, which one will accelerate the fastest?

Mass: 5 kg

Mass: 6 kg

mass: 8 kg

Mass: 9 kg

Scientists should be very concerned about the fact that this new toxin inhibits Na+ channels and might be harmful to organisms.

Because oestrogen and progestin combinations inhibit ovulation, my medication will be a steroid hormone. Additionally, they alter the mucus at the cervix to stop sperm from entering and the uterine lining to stop pregnancy from forming.

A. Depolarization is taking place as the action potential in neuron B compared to neuron A rises from a negative to a positive potential.

B. Na+ ions have the greatest impact at time 0. The electric potential becomes positive due to the inward migration of Na+ ions, causing the cell to depolarize.

C. The depolarization is brought on by the inward influx of Na+ ions through voltage-gated Na+ channels.

D. When the current reaches its peak, the K+ outward current will begin and the inward current will cease, allowing the neuron to experience repolarization.

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Answer:

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Answer:

It can be verified since the information came from a government article. Or you could trust the magzine/general article if its from a well known article. Explanation:

you get the point, you can add on to this. I can't make it the best since im not in your class learning. Good luck

The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.

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Answer:

The Universe will continue to expand :)

Explanation:

Dark matter reverses the effect of gravity in some cases, and the Doppler effect also supports this claim, in which it states that the later the star has formed, the farther away it will be from the center/origin point of our universe.

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Over-exploitation of forests has the serious environmental effects such as deforestation, destruction of ecosystems and animal habitats, accelerated soil erosion among others.

Air pollution occurs from burning of energy sources.

That source was fossil fuels , coal, oil, and natural gas, though coal led way, formed underground from remains of plants and animals from much earlier geologic times.

By mid-19th century, industrial revolution brought significant shift in energy sources with the usage of coal, mainly for steam engines, but increasingly for power plants.

The use of thermal energy to generate mechanical energy was core driver of this transformation.

Before industrial revolution our energy needs were modest.

For heat, we relied on the sun, and burned wood, straw, and dried dung when sun failed us.

For transportation, muscle of horses and power of the wind in our sails took us to every corner of the world.

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Answer:

It holds heat from the sun close to Earth.

Explanation:

Hope this helps and have a great day. :)

Answer:

              24.97 g of C

Explanation:

Molar Mass of Ibuprofen is 206.29 g/mol

Molecular Formula of Ibuprofen is C₁₃H₁₈O₂

Also, 13 C atoms has mass of 12.01 × 13 = 156.13 g

Percentage of C in Ibuprofen,

% age of C = 156.13 / 206.29 × 100 = 75.68%

Now calculate 75.68 % of 33 g as,

75.68 % = x / 33 g × 100

x = 75.68 × 33 / 100

x = 24.97 g of C