after formation of a br atom radical (the initiation step), what is the most likely sequence of steps to generate the major product?

Chemical weathering is an example of Airborne oxygen reacts with the iron content of rocks, causing them to change color.

Chemical weathering is a process in which things disintegrate due to chemical reactions, mostly with water and compounds dissolved in it, rather than mechanical processes.

A) Freezing water widens fissures in rocks is a physical phenomenon in which water stuck inside crevices in rocks expands when frozen at lower temperatures. In this method, no chemical changes are seen.

B) Plant roots force their way into cracks in rocks and finally shatter them. This is a physical process in which plant roots search for water and nutrients in fissures in rocks and eventually break them. There are no chemical changes visible here.

C) Oxygen in the air reacts with iron content in rocks, causing them to change color; as we can see, the color of rocks is changing as a result of a chemical reaction between oxygen in the air and iron content in the rocks. This process is also characterized by rock disintegration. As a result, this is referred to as chemical weathering.

D) Strong winds physically peel soft rock away, leaving harder rock behind There is no visible chemical change.

As a result, the correct solution is Option C), which provides completely adequate modifications to be classified as chemical weathering.

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Answer:

First, each element that forms cations is a metal, except for one (hydrogen), while each element that forms anions is a nonmetal. This is actually one of the chemical properties of metals and nonmetals: metals tend to form cations, while nonmetals tend to form anions. Are positive ions metals or nonmetals?

Explanation:

Answer:

Explanation:

Because the complex absorbs 600 nm (orange) through 450 (blue), the indigo, violet, and red wavelengths will be transmitted, and the complex will appear purple. Note: This is the energy for one transition (i.e., in one complex). If you want to calculate the energy in J/mol, then you have to multiply this by Avogadro's number (NA).

Ionic bonds are formed between K and Br due to losing and gaining of electrons.

Ionic bond is the bond formed between two elements due to the gaining and losing of electrons by the one member and acceptance by the other member.

Usually the metal atom loses electron and the non-metal gains electron.

Ionic bond is formed between Potassium (K) and Bromine (Br). Potassium loses electron to form  K⁺ and Bromine gains electron to form Br⁻ .

Potassium Bromide (KBr) is formed due to formation of K⁺ and Br⁻ after the addition of electron is Br and losing of electron by K atom.

Potassium Bromide can be Electrolysed into the constituent ions on addition of water due to its nature as a strong electrolyte.

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Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

From the question

volume of bromine = 50 mL

density = 3.10 g/cm³

It's mass is

mass = 50 × 3.10

We have the final answer as

Hope this helps you

Answer:

\(\boxed {\tt 155 \ grams}\)

Explanation:

The formula for density is:

\(d=\frac{m}{v}\)

Rearrange the formula for mass, m. Multiply both sides by v.

\(d*v=d=\frac{m}{v}*v\)

\(d*v=m\)

Mass is found by multiplying the mass by the volume.

The density of the bromine is 3.10 grams per cubic centimeter. The volume is 50 milliliters. Since a milliliter is equal to a cubic centimeter, the volume is also 50 cubic centimeters.

\(d= 3.10 \ g/cm^3\)

\(v= 50 \ cm^3\)

Substitute the values into the formula.

\(m=d*v\)

\(m=3.10 \ g/cm^3 *50 \ cm^3\)

Multiply. Note the centimeters cubed will cancel out.

\(m=3.10 \ g * 50\)

\(m= 155 \ g\)

The mass of the bromine is 155 grams.

The formula masses of water, propene, and 2-propanol are 18.015 g/mol, 42.081 g/mol, and 60.096 g/mol, respectively.

The formula mass, also known as the molecular weight, is the sum of the atomic masses of all the atoms in a molecule. For water, H2O, the formula mass would be 2(1.008) + 1(15.999) = 18.015 g/mol. For propene, C3H6, the formula mass would be 3(12.011) + 6(1.008) = 42.081 g/mol. Finally, for 2-propanol, C3H8O, the formula mass would be 3(12.011) + 8(1.008) + 1(15.999) = 60.096 g/mol. In conclusion, It is important to know the formula mass as it can be used to determine the amount of substance in a given sample using Avogadro's number and the mass of the sample.

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Answer:

1. FeO

2.

3. Ba(NO3)2

4. Ca(OH)²

Explanation:

sorry I didn't knew of no 2 the others were on my book but not that one, and of no 4 the power 2 must be down

To calculate the Ksp of magnesium phosphate at a given temperature, we can use the formula Ksp = [Mg2+][PO43-]. We need to know the concentrations of magnesium ions and phosphate ions in the solution in order to calculate Ksp.

Since the solubility of magnesium phosphate at the given temperature is 0.345 g/100 mL, we can convert this to moles per liter (M) using the molar mass of magnesium phosphate (Mg3(PO4)2) which is 262.86 g/mol.

0.345 g/100 mL x 1 mol/262.86 g x 10^3 mL/L = 1.313 x 10^-3 M

Since magnesium phosphate has a 1:2 molar ratio of magnesium ions to phosphate ions, the concentration of magnesium ions is half the concentration of magnesium phosphate.

[Mg2+] = 1.313 x 10^-3 M / 2 = 6.57 x 10^-4 M

The Ksp can now be calculated as:

Ksp = [Mg2+][PO43-] = (6.57 x 10^-4 M) (1.313 x 10^-3 M) = 8.626 x 10^-7

The Ksp of magnesium phosphate at the given temperature is 8.626 x 10^-7, rounded to 3 significant figures using E notation.

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Answer:

A bendable

Explanation:

I got 100 on that test

Answer:

The Ice is Less Dense than the Water

Explanation:

I just answered this one myself, and the explanation is also just that Ice isn't dense enough to sink.

The answer is - Endothermic processes are evaporation of water from the skin
- Exothermic processes are burning of candle wax, oxidation of iron in a chemical hand warmer, combustion of natural gas in a stove.

Following is the detailed answer of your question.

Classify the following processes as endothermic or exothermic:

1. The burning of candle wax: This is an exothermic process because heat is released during the combustion of the wax.

2. The oxidation of iron in a chemical hand warmer: This is an exothermic process because the oxidation reaction generates heat, which warms your hand.

3. The evaporation of water from the skin: This is an endothermic process because it requires heat (energy) to be absorbed from the surrounding environment (such as your skin) for the water to evaporate.

4. The combustion of natural gas in a stove: This is an exothermic process because the combustion of natural gas releases heat, which is used to cook food on the stove.

In summary:
- Endothermic processes: evaporation of water from the skin
- Exothermic processes: burning of candle wax, oxidation of iron in a chemical hand warmer, combustion of natural gas in a stove

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The force applied to the 10 kg computer was 50 Newtons.

An electrical device with the capability to accept, store, process, and output data is known as a computer.

The following formula can be used to determine the force exerted on a 10 kilogram computer that is accelerating at a rate of 5 m/s2:

Force = mass x acceleration

Where

Plugging in these values, we get:

Force = 10 kg x 5 m/s²

Force = 50 N

Therefore, the force applied to the 10 kg computer was 50 Newtons.

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C. slight opposite charges

Explanation: opposites attract

Water molecules able to weakly bond to one another with hydrogen bonds because of hydrogen and oxygen poles having slight opposite charges. Option C is correct.

Water molecules are polar, meaning they have regions with different electrical charges. Oxygen is more electronegative than hydrogen, so it pulls the shared electrons in the covalent bonds towards itself, creating a partial negative charge (δ⁻) near the oxygen atom and a partial positive charge (δ⁺) near the hydrogen atoms.

This charge separation gives rise to a weak electrostatic attraction between the δ⁺ hydrogen of one water molecule and the δ⁻ oxygen of another, forming a hydrogen bond. This bond is not as strong as covalent bonds but contributes to the cohesive and adhesive properties of water, allowing it to form a network of interconnected molecules and exhibit characteristics like high surface tension, capillary action, and high heat capacity.

Hence, C. is the correct option.

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Among the given options, the orbital that cannot exist is e) 162p. This answer stands out as it violates the known patterns and limitations of atomic orbitals.

Orbitals are regions of space where there is a high probability of finding an electron. They are denoted by a principal quantum number (n), an angular momentum quantum number (l), a magnetic quantum number (m), and a spin quantum number (s).

In the case of the principal quantum number (n), it represents the energy level of the orbital and determines the size of the orbital. For a given value of n, the maximum value of the angular momentum quantum number (l) is n-1. The angular momentum quantum number specifies the shape of the orbital.

In the given options, all the orbitals are within the expected range except for option e) 162p. The value "162" for the principal quantum number is extremely high, surpassing any known energy levels in atoms. Furthermore, the "p" orbital shape corresponds to l = 1, which would not be possible for such a high principal quantum number.

In conclusion, among the provided options, the orbital that cannot exist is e) 162p. The combination of an excessively high principal quantum number and the specific orbital shape makes it inconsistent with the known principles and limitations of atomic orbitals.

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Answer: C. oil

Explanation:

Answer:

50 moles of many mango seeds = 2.107.10²⁴ mango

Further explanation

A mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12

While the number of moles can also be obtained by dividing the mass (in grams) with the molar mass of element or molecule

With  Avogadro's number

N = number of gas particles

No = Avogadro number (6.02.10²³)

n = number of moles

n= N/No

3.50 moles of many mango seeds are comparable to

N mango seeds= 3.5 x 6.02.10²³

N mango seeds=2.107 x 10²⁴..

Answer:

chlorine-35 (75.53 percent) and chlorine-37 (24.47 percent)

KE: The kinetic energy (KE) of the bowling ball is 0 J since it is not moving.

Kinetic energy is the energy of motion. It is the energy an object possesses due to its motion. Kinetic energy can be found in many forms, such as the energy of a moving car, a roller coaster car, a spinning bicycle wheel, or sound waves traveling through the air. Kinetic energy is the energy of motion and can be transferred from one object to another.

GPE: The gravitational potential energy (GPE) of the bowling ball can be found by using the formula GPE = mgh, where m is the mass of the ball, g is the acceleration due to gravity, and h is the height of the building. In this case, m = 6 kg, g = 9.8 m/s2, and h = 120 m. Thus, GPE = 6 x 9.8 x 120 = 7,128 J.
KE: The kinetic energy (KE) of the bowling ball is 0 J since it is not moving.

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14.7 mL of the 0.010 M sodium bromide solution is required to begin the precipitation of copper(I) bromide.

To determine the volume of 0.010 M sodium bromide solution required to begin the precipitation of copper(I) bromide, we need to calculate the number of moles of copper(I) nitrate present in the solution, as well as the number of moles of copper(I) bromide that can be formed.

First, we can calculate the number of moles of copper(I) nitrate:

moles of Cu(NO₃)₂ = mass / molar mass = 0.05135 g / (Cu: 63.55 g/mol + 2xN: 2x14.01 g/mol + 6xO: 6x16.00 g/mol) = 0.000294 mol

Since copper(I) nitrate contains one mole of copper for every two moles of nitrate, we can calculate the number of moles of copper(I) ions:

moles of Cu⁺ = 0.000294 mol / 2 = 0.000147 mol

Copper(I) bromide can be formed by mixing copper(I) ions with bromide ions in a 1:1 molar ratio. Therefore, the number of moles of sodium bromide required to react with all the copper(I) ions can be calculated as:

moles of NaBr = moles of Cu⁺ = 0.000147 mol

Finally, we can calculate the volume of the 0.010 M sodium bromide solution required to provide this amount of moles:

volume of NaBr solution = moles of NaBr / molarity of NaBr solution = 0.000147 mol / 0.010 mol/L = 0.0147 L = 14.7 mL

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Yes!

Explanation:

If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water.

You would need approximately 4.36 milliliters of chloroform if you required 6.47 grams.

The volume of chloroform needed, we can use the relationship between density, mass, and volume:

Density = Mass / Volume

We can rearrange the equation to solve for volume:

Volume = Mass / Density

Substituting the given values:

Volume = 6.47 g / 1.483 g/mL

Calculating the volume:

Volume ≈ 4.36 mL

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The activation energy of the reaction is approximately 71.46 kJ/mol, rounded to 2 decimal places.

To find the activation energy (Ea) of the reaction, we can use the Arrhenius equation, which relates the rate constant (k) to the temperature (T) and activation energy. The Arrhenius equation is given by:

k = A * e^(-Ea/RT)

Where:

k is the rate constant

A is the pre-exponential factor (frequency factor)

Ea is the activation energy

R is the gas constant (8.314 J/(mol·K))

T is the temperature in Kelvin

We have two sets of data:

At 600 K, k1 = 3.4 m^(-1)s^(-1)

At 750 K, k2 = 31.0 m^(-1)s^(-1)

Taking the natural logarithm (ln) of both sides of the Arrhenius equation, we can rearrange the equation to solve for the activation energy:

ln(k) = ln(A) - (Ea/RT)

We can create two equations using the given data:

ln(k1) = ln(A) - (Ea/(R * 600))

ln(k2) = ln(A) - (Ea/(R * 750))

Subtracting the second equation from the first eliminates the ln(A) term:

ln(k1) - ln(k2) = (Ea/R) * ((1/600) - (1/750))

Simplifying further:

ln(k1/k2) = (Ea/R) * ((750 - 600) / (600 * 750))

Now we can solve for Ea:

Ea = (R * (ln(k1/k2))) / ((750 - 600) / (600 * 750))

Using the given values and the appropriate units:

Ea = (8.314 J/(mol·K) * ln(3.4/31.0)) / ((750 - 600) / (600 * 750))

Converting the units from J to kJ:

Ea = (8.314 × 10^(-3) kJ/(mol·K) * ln(3.4/31.0)) / ((750 - 600) / (600 * 750))

Ea ≈ 71.46 kJ/mol

Therefore, the activation energy of the reaction is approximately 71.46 kJ/mol, rounded to 2 decimal places.

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Answer:

The radiation of the Sun's electromagnetic waves

Explanation:

Earth's atmosphere keeps much of the Sun's energy from escaping into space. This process, called the greenhouse effect, keeps the planet warm enough for life to exist.

Answer:

the difference is fumaric acid the carboxylic acid groups are trans (E) and in maleic acid they are cis (Z)

Explanation:

and  Fumarate is an intermediate in the citric acid cycle used by cells to produce energy in the form of adenosine triphosphate (ATP) from food

Answer:

The correct option is

B. PEA = KEC + PEC

Explanation:

The potential energy is the energy possessed due to position

From the image the point with the highest position and therefore the most potential energy and the lowest or zero kinetic energy is point A

Given that we have;

Total mechanical energy = The potential energy +  The kinetic energy

Where there is constant total mechanical energy in the system, then, at the point A where the kinetic energy is zero, the potential energy is equal to the total mechanical of the system, we have;

Total mechanical energy = The potential energy at A = PEA

Total mechanical energy = PEA

At point C where we have the total mechanical energy presented as follows;

Total mechanical energy = Kinetic energy at C + Potential energy at C

Total mechanical energy = KEC + PEC

Therefore;

PEA = KEC + PEC.

A model helps to explain a physical reality.

A model is a representation of reality. It often serves the  purpose of explanation or prediction. The question is incomplete but I will try to explain what a model is.

There are several kinds of models such as;

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Among the options provided, the statement that accurately describes a type of potential energy found in a container full of a chemical substance in liquid form is: "The bonds between atoms are one place where potential energy is stored."

In a container filled with a chemical substance in liquid form, the potential energy is primarily stored in the bonds between atoms within the molecules of the substance. These bonds are formed by the sharing or transferring of electrons between atoms, creating a stable arrangement. The potential energy arises from the electrostatic interactions between the charged particles involved in these chemical bonds.When the liquid substance is in its equilibrium state, the potential energy stored in the bonds represents the energy required to break these bonds and separate the atoms, transforming the substance into a different state (such as a gas or a solid).

This potential energy is released when the substance undergoes a chemical reaction or when external forces act upon it.While other forms of potential energy can also exist in a liquid substance, such as kinetic energy due to the speed of the particles or vibrational energy of the atoms within the molecules, these are generally associated with other types of energy rather than potential energy.

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Any material created by the combination of an acid and a base, also known as a neutralization reaction, is referred to as "salt" informally.

Ionic bonding, relatively high melting temperatures, electrical conductivity when melted or in solution, and crystal structure as a solid are some properties that all these salts have in common.

The following are some of the intriguing features of the chemical compound salt:

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Step 1

The reaction must be completed and balanced as follows:

C3H8 + 5 O2 => 3 CO2 + 4 H2O

-------------

Step 2

Information provided:

20.0 g of C3H8

10.0 g of O2

----

Information needed:

1 mole of C3H8 = 44.1 g

1 mole of O2 = 32.0 g

(use your periodic table please)

-------------

Step 3

By stoichiometry,

C3H8 + 5 O2 => 3 CO2 + 4 H2O

44.1 g C3H8 ---------- 5 x 32.0 g O2

20.0 g C3H8 ---------- X

X = 20.0 g C3H8 x 5 x 32.0 g O2/44.1 g C3H8

X = 72.6 g O2

For 20.0 g of C3H8, 72.6 g of O2 is needed, but there is only 10.0 g of O2.

Therefore,

Answer:

The limiting reactant = O2

The excess = C3H8