An AM radio station broadcasts at 1030 kHz , and its FM partner broadcasts at 98.4 MHz

Answer:

i dont knoiwxplanation:

Answer:

              tert-Butylbenzene (MAJOR)

              Isobutylbenzene (MINOR)

Explanation:

                     This electrophilic substitution reaction. The electrophile generated is attacked by benzene and substituted with H. As shown in attached image, the electrophile generated is primary carbocation which is less stable. This primary carbocation rearranges into a tertiary carbocation by a proton shift. Hence, giving trans-butylbenzene as a major product.

Answer:

all of the above

Explanation:

i got the answer right on cK-12

Answer:

its sodium hydroxide

Explanation:

Answer:

6 mol CO2

Explanation:

According to the equation, 6 moles of O2 will produce 6 moles of CO2, so the ratio is 1:1

therefore 6 moles of O2 will produce 6 moles of CO2

Answer: i also need help on the same question :(

Explanation:

Answer:

mass = 25.0 g

density = 1.48 g / cm^3

volume = ?

volume = mass / density

volume = 25 / 1.48

volume = 16.892 cm^3

Answer:

See Explanation

Explanation:

There is a concept in chemistry called the denticity of  a ligand. The denticity of a ligand refers to the number of donor groups in a given ligand that can bond to a central metal atom or ion. In other words, it is the number of bonding positions available in a ligand.

Ammonia has only one bonding position(monodentate ligand); that is, the lone pair on its nitrogen atom. Hence, six ammonia ligands are required to form an octahedral complex with the nickel center.

However, ethylenediamine has two positions available for bonding to a central metal atom or ion. These are the two nitrogen atoms present in the molecule. Hence, each molecule of ethylenediamine is bidentate, bonding to the nickel using two "teeth". Hence, three ethylenediamine molecules form six bonds to the nickel center as required in an octahedral complex.

Answer:  (1) Inhales (breathes in) Oxygen - good for the body - gives it to the Circulatory System to be transported throughout the body through the blood. (1) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go.

The molar mass of MgCrO4 is approximately 140.30 g/mol.

To determine the molar mass of MgCrO4 (magnesium chromate), we need to calculate the sum of the atomic masses of each individual element in the compound.

The chemical formula MgCrO4 indicates that the compound consists of one magnesium atom (Mg), one chromium atom (Cr), and four oxygen atoms (O).

The atomic masses of the elements can be found on the periodic table:

Magnesium (Mg) has an atomic mass of approximately 24.31 g/mol.

Chromium (Cr) has an atomic mass of around 51.99 g/mol.

Oxygen (O) has an atomic mass of about 16.00 g/mol.

Now, we can calculate the molar mass of MgCrO4 by summing up the atomic masses of each element, considering the respective subscripts:

Molar mass = (Atomic mass of Mg) + (Atomic mass of Cr) + 4 × (Atomic mass of O)

Molar mass = (24.31 g/mol) + (51.99 g/mol) + 4 × (16.00 g/mol)

Molar mass = 24.31 g/mol + 51.99 g/mol + 64.00 g/mol

Molar mass ≈ 140.30 g/mol

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The first four periods compared to the group containing nitrogen Group 15 elements have half-filled p orbitals.

A basic part of a whole. In chemistry, refers to a simple substance that cannot be broken down into smaller parts or changed into another substance. The basic part of an element is an atom, which contains protons, neutrons, and electrons. All atoms of an element have the same number of protons.

The elements are classified as metal, non-metal, and metalloid. The extreme left side elements in the periodic table are metals, for example, sodium, calcium, caesium, etc. However, elements on the right side are generally referred to as non-metals, carbon, chlorine, oxygen, etc.

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C.) Schrodinger's Quantum Mechanical Model is the electron model currently accepted by modern science. This model is based on the principles of quantum mechanics, which describe the behavior of particles at the atomic and subatomic level.

What is Electron?

An electron is a subatomic particle that carries a negative electric charge. It is one of the three fundamental particles that make up atoms, along with protons and neutrons. Electrons are much smaller than protons and neutrons, and they orbit around the nucleus of an atom. Electrons play a crucial role in chemical reactions, since they determine the chemical properties of atoms and molecules.

It represents electrons as probability clouds or orbitals, rather than as discrete particles following classical trajectories. This model has been successful in explaining the behavior of electrons in atoms and molecules, and has led to many important discoveries in modern physics and chemistry.

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The Pi product of the numbers 2, 3 and 10 will be 2 times 3 times 10:

It means that the correct answer is 60.

The information that the percent composition of an atom in a molecule give is the The total mass that element contributes to a molecule. That is option C.

The percent composition of an atom in a molecule is the total mass/amount of an element present in a molecule/compound to the molecular mass of the compound, multiplied by 100.

The mass of an atom is the amount of matter that is contained in that atom.

When you are calculating the percentage composition of an atom in a molecule this is to find out the mass of the atoms of the element that contributes to the given molecule.

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Answer:

Fe2O3,  Fe2S3 and FeCl3

Explanation:

The formular shows the number of atoms of element present in the compound. The number of atoms in turn depends on the charges. The goal is to have a neutral compound with oxidation number of zero.

Oxide:

Iron(Fe) has oxidation number (O.N) of +3, oxygen has O.N of -2. The formular with a balanced (Charge = 0) O.N number is; Fe2O3

Sulphide:

Iron(Fe) has oxidation number (O.N) of +3, sulphur has O.N of -2. The formular with a balanced (Charge = 0) O.N number is; Fe2S3

Chloride:

Iron(Fe) has oxidation number (O.N) of +3, chlorine has O.N of -1. The formular with a balanced (Charge = 0) O.N number is; FeCl3

Based on the given reactions, the compounds are as follows:

A: The specific product formed from the reaction between prop-1-yne and either 2HBr or H2O2.

B: The product formed when compound A reacts with 2H2O.

C: The product formed when compound B reacts with K2CO3(aq).

D: The product formed from the heat-induced reaction of compound C.

E: The product formed when compound D reacts with HBr.

Based on the given reactions, let's analyze the compounds involved:

Reaction 1: prop-1-yne + 2HBr/H2O2 = A

The reactant prop-1-yne reacts with either 2HBr or H2O2 to form compound A. The specific product formed will depend on the reaction conditions.

Reaction 2: A + 2H2O = B

Compound A reacts with 2H2O (water) to form compound B.

Reaction 3: B + K2CO3(aq) = C

Compound B reacts with K2CO3(aq) (potassium carbonate dissolved in water) to form compound C.

Reaction 4: C + heat = D

Compound C undergoes a heat-induced reaction to form compound D.

Reaction 5: D + HBr = E

Compound D reacts with HBr (hydrobromic acid) to form compound E.

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We can see here that the catalytic cycle for the hydrogenation of alkenes using Wilkinson's catalyst involves several steps.

Here's an overview of the catalytic cycle, including the necessary details:

i. Chemical structure of the catalyst:

Wilkinson's catalyst, also known as chloridotris(triphenylphosphine)rhodium(I), has the following chemical structure: [RhCl(PPh3)3]

ii. Molecular geometry of the catalyst:

The Wilkinson's catalyst has a trigonal bipyramidal geometry around the rhodium center. The three triphenylphosphine (PPh3) ligands occupy equatorial positions, while the chloride (Cl) ligand occupies an axial position.

iii. Type of reactions involved:

The catalytic cycle involves several reactions, including:

iv. Starting material, reagent, and solvent:

The starting material is an alkene, and the reagent is Wilkinson's catalyst ([RhCl(PPh3)3]). The reaction is typically carried out in a suitable solvent, such as dichloromethane (CH2Cl2) or tetrahydrofuran (THF).

v. Major and minor end-products:

The major end-product of the hydrogenation reaction is the fully saturated alkane, resulting from the addition of hydrogen across the double bond. The minor end-product may include cis- or trans-configured alkanes if the original alkene substrate possesses geometric isomers.

vi. Intermediates:

The intermediates in the catalytic cycle include:

These intermediates play a crucial role in facilitating the hydrogenation reaction and enabling the catalytic cycle to proceed.

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Answer:

electrical energy is converted into mechanical energy.

Explanation:

An electric motor contains a permanent magnet and an electromagnet. As the poles of the electromagnet and the permanent magnet constantly repel each other, the electric motor makes a rotational motion. The increase in current or the increase in power of the magnet causes the electric motor to rotate faster.

Answer:

Pause the video to take as much time as needed. Pause it to create more wait-time to answer questions before I move on. One of the best ways to learn is to quiz yourself as you go along.

Explanation:

The ionic compound and covalent compound can be easily determined by electronegativity difference.

If the compound will be formed by transferring the electrons then such kind of compound or molecule will be considered as ionic compound.

If the compound will be formed by sharing the electrons then such kind of compound or molecule will be considered as covalent compound.

It is easy to know the nature of compound like ionic or covalent . If the electronegativity difference of given molecule lies between 0 to 2.1 then molecule will be covalent compound. If electronegativity difference will be greater than 2.1 then compound will be ionic compound.

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The equation of the circle in standard form is (x - h)² + (y - k)² = (r)².

To derive the equation of a circle in standard form based on the given figure, we can use the distance formula. Let's complete the table step by step:

The distance from the center of the circle C(h, k) to the point D(x, y) on the circumference is the radius r. Using the distance formula, we have:

Distance formula: √((x₂ - x₁)² + (y₂ - y₁)²)

Plugging in the values for C(h, k) and D(x, y):

r = √((x - h)² + (y - k)²)

The circumference of the circle intersects the x-axis at two points. In these points, the y-coordinate is 0. Therefore, we substitute y = 0 into the equation derived in step 1:

r = √((x - h)² + (0 - k)²)

r = √((x - h)² + k²)

Similarly, the circumference intersects the y-axis at two points, where the x-coordinate is 0. We substitute x = 0 into the equation derived in step 1:

r = √((0 - h)² + (y - k)²)

r = √(h² + (y - k)²)

Now, let's square both sides of the equations derived in steps 2 and 3 to eliminate the square root:

(r)² = (x - h)² + k²

(r)² = h² + (y - k)²

Rearranging the equations from steps 4, we obtain the standard form of the equation of a circle:

(x - h)² + (y - k)² = (r)²

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COMPLETE QUESTION IS IN IMAGE

In 4.38 × 10^21 molecules of water, there are approximately 0.073 moles.

To calculate the number of moles, we can use Avogadro's number, which states that 1 mole of a substance contains 6.022 × 10^23 molecules. So, by dividing the given number of molecules (4.38 × 10^21) by Avogadro's number, we can find the number of moles.

Now, let's explain the process in detail. Avogadro's number is a constant that represents the number of particles (atoms, molecules, etc.) in one mole of a substance. It is approximately 6.022 × 10^23. Therefore, if we divide the given number of molecules by Avogadro's number, we can determine the number of moles.

In this case, we divide 4.38 × 10^21 molecules by 6.022 × 10^23 molecules/mole, resulting in approximately 0.073 moles.

Significant figures play an important role in reporting the answer. The given number of molecules has three significant figures (4, 3, and 8), so our answer should be reported with three significant figures as well. Therefore, the number of moles is approximately 0.073.

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Answer: its 10 over 22 times 3 1/2

YW

Explanation:

Answer: Sodium and Chlorine

Explanation: I think it's right

Answer:

The question is incomplete, the complete question is;

Which is most closely associated with the Lewis dot diagrams for molecules that contain atoms of elements from the boron family, Group 13 (Group IIIA)?

a. elements shown as 3+ ions

b. expanded octets of electrons

c. incomplete octets of electrons

d. odd number of valence electrons

e. kernel electrons promoted to the valance shell

Answer:

incomplete octets of electrons

Explanation:

A Lewis dot structure is a representation of a molecule based on the number of valence electrons on its valence shell. These electrons are shown as dots hence Lewis structures are also called dot electron structures.

For elements of group 13, they mostly form dimeric compounds due to the fact that their compounds possess an incomplete octet of electrons. This is common to group 13 elements, hence the answer above.

The partial pressure of the nitrogen gas is 10 atm.

According to the Dalton's law, when we have a mixture of gases, the partial pressure of the gas is the pressure of one of the gases that we find in the system. Thus the total pressure of the system is the sum of all the partial pressures of all the gases.

We have the following information;

Total pressure of the gas =  40 atm

Total number of moles = moles of nitrogen +  moles of oxygen = 15 mols + 5 mols

= 20 moles

Mole fraction of nitrogen gas = 5 moles

We now have;

Mole fraction * Total number of moles

= 5 moles/20 moles * 40 atm

= 10 atm

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A balanced equation may be used to describe this reaction:

HC=C(aq) + H2O(l) ⇌ H3C+C-(aq) + OH-(aq)

The Brnsted-Lowry hypothesis is an acid-base reaction theory that was separately proposed in 1923 by Johannes Nicolaus Brnsted and Thomas Martin Lowry. In a chemistry, a Brnsted-Lowry base is a molecule or ion that accepts a hydrogen ion. Because a hydrogen ion is often referred to as a proton, acids and bases are proton donors and acceptors, according to the Brnsted-Lowry definition.

Here,

The acetylide ion (HC=C) acts as a Brønsted-Lowry base in water, accepting a proton from water to form an acetylene cation (H3C+C-):

HC=C + H2O ⇌ H3C+C- + OH-

This reaction can be written as a balanced equation:

HC=C(aq) + H2O(l) ⇌ H3C+C-(aq) + OH-(aq)

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Answer:

you're welcome

Answer:

3.1

speed is distance over time, cross multiply