What is  the correct name of the acid corresponding to the BrO3- oxoanion  ​

#1

Subtract no of electrons from no of protons

Ion A has -2 charge

#2

No of protons=6

No of electrons=6

Explanation:

The electron density number as well as the sublevel letter are used to describe valence electrons in an atom. The third total energy and subbasement p, for example, is denoted by 3p. The electron configuration of oxygen, for example, is 1s^2 2s^2 2p^4, which means the first two electrons will couple up in the 1s orbital, while the following two protons will pair up in the 2s orbital.

The sample atom is Carbon with electron configuration; 1s² 2s² 2p².

The principal energy level of an electron refers to the shellp in which the electron is located relative to the atom's nucleus. In this case only 2 energy levels exist in a carbon atom; which are energy level 1 and 2

The sublevels exist within a principal energy and the electron configuration of an atom is described with consideration of energy sublevels. The sublevels in a carbon atom are;

The orbitals in this configuration are: 1s 2s 2px 2py 2pz in which case; each orbital can accommodate 2 electrons each.

Ultimately, the location of an element on the periodic table with respect to group and period are used to determine the valency and no. of energy levels in the atom of that Element.

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Answer:

D₁ = 3.31 m

D₂ = 0.9 m

Explanation:

First, we will find the scaling factor of the model:

\(Scaling\ Factor = S.F = \frac{Distance\ between\ Earth\ and\ moon\ in\ Model}{Distance\ between\ Earth\ and\ moon\ in\ Actual}\\S.F = \frac{100\ m}{384400000\ m}\\\)

S.F  = 2.6 x 10⁻⁷

Now, the diameter of 1st sphere, that is Earth will be:

\(D_{1} = (S.F)(Actual\ Diameter\ of\ Earth)\\D_{1} = (2.6\ x 10^{-7}\ m)(12742000\ m)\\\)

D₁ = 3.31 m

Now, the diameter of 2nd sphere, that is Moon will be:

\(D_{2} = (S.F)(Actual\ Diameter\ of\ Moon)\\D_{2} = (2.6\ x 10^{-7}\ m)(3474200\ m)\\\)

D₂ = 0.9 m

A stationary front is a boundary between two different air masses that aren't moving relative to each other, but instead are stationary.An air mass is a massive body of air with uniform temperature and moisture characteristics. An air mass takes on the qualities of the area where it forms. As an air mass moves from one place to another, it carries its temperature and moisture content with it.

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The substances given in the task above are correctly classified as either atomic element, molecular element, molecular compound, or ionic compound as follows:

A compound can simply be defined as a chemical substance which is formed as a result of the chemical attraction between two or more elements. In order words, a compound is made or formed from two or more elements. A compound is chemically combined together

From the task given above, Carbon monoxide, CO and Lead iodide, PbI4 are typical examples of a compound.

That being said, an atom is the smallest particle of an element which can take part in a chemical reaction. Fluorine, F₂ is an atomic element.

So therefore, we can now confirm and deduce from the explanation given above that a compound contains at least two or more different elements.

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Answer:The higher something is before it falls, the longer gravity can act on an object.

Explanation:

When something is dropped from higher up it has more time to fall thus giving gravity more time to act on the object.

Take a look at this link for more information.

http://faculty.ric.edu/psci103/newton/newton_notes.pdf

we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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Answer:

condensation

Explanation:

Answer:

b because I know this

Explanation:

trust me I am I. 6th grade straight a's

Explanation and Answer:

An endothermic change is a process that absorbs heat from the surroundings and cools the surroundings.

For example: the physical endothermic change of the melting process of a ice cube. The ice cube will absorb heat to melt and convert into liquid water.

By the concept of calculating moles ,it can br concluded that the no. of atoms of phosphorus in 8.80mol of copper(II) phosphate is=1.06\(x10^{25}\)

A mole is defined as amount of substance containing as many as elementary entities that are there in atoms of exactly 12 g of carbon-12.Therefore we can say,1 mole of copper(II) phosphate, Cu3(PO4)2, contains three moles of copper(II) cations and two moles of phosphate anions.

Again 1mole of phosphate anions contains one mole of phosphorus and four moles of oxygen.Considering all these informations we can conclude that:1 mole of copper(II) phosphate contains 2 moles of Phosphorus

Accordingle the sample contains=(8.80\(x\)2) moles of Phosphorus

                                    =(17.6\(x\)Avogadro's constant) atoms of  Phosphorus

                                    =(17.6\(x\)6.022\(x\)\(10^{23}\)) atoms of  Phosphorus

                                    =1.06\(x10^{25}\) [approx] no. of Phosphorus atoms

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In 8.80 moles of copper(II) phosphate, there are approximately 1.06 x 10²⁵ atoms of phosphorus.

The number of atoms of phosphorus in a given amount of a compound can be calculated using the concept of mole in chemistry. Copper(II) phosphate is Cu3(PO4)2, containing 2 moles of phosphorus (P) for every 1 mole of the compound. Avogadro's number (6.022 x 10²³) gives the number of atoms in one mole.

So, if there are 8.80 moles of copper(II) phosphate, there would be 2 × 8.80 moles of phosphorus. Multiplying this by Avogadro's number gives the total number of phosphorus atoms.

Therefore, the number of phosphorus atoms is 2 × 8.80 × 6.022 x 10²³ = 1.06 x 10²⁵ atoms of phosphorus.

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The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

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Answer:

Mass = 100.8 g

Explanation:

Given data:

Mass of sulfur formed = ?

Mass of water formed = 37.4 g

Solution:

Chemical equation:

2H₂S + SO₂      →   3S + 2H₂O

Number of moles of water:

Number of moles = mass/molar mass

Number of moles = 37.4 g/ 18 g/mol

Number of moles = 2.1 mol

Now we will compare the moles of water and sulfur.

          H₂O         :            S

            2             :          3

           2.1            :         3/2×2.1 = 3.15

Mass of sulfur:

Mass = number of moles × molar mass

Mass = 3.15 mol × 32 g/mol

Mass = 100.8 g

Answer:

c

Explanation:

The total pressure in the flask after 1.00 hour will be 0.85 atm.

The given process is a second-order reaction, and its rate law is given by:

rate = k[CH₃CHO]²

where k is the rate constant and [CH₃CHO] is the concentration of acetaldehyde.

The half-life of the reaction is given as 410 seconds, which can be used to determine the rate constant as follows:

t1/2 = 1 ÷ k[CH₃CHO]²

410 s = 1 ÷ k[CH₃CHO]²

k = 1 ÷ (410 s [CH₃CHO]²)

Assuming that the reaction proceeds to completion, i.e., all the acetaldehyde is converted to methane and carbon monoxide, we can use the ideal gas law to determine the total pressure:

PV = nRT

where P is the total pressure, V is the volume of the flask (500 mL = 0.5 L), n is the number of moles of gas, R is the gas constant (0.08206 L atm/mol K), and T is the temperature (518 °C = 791 K).

Let [CH₃CHO]₀ be the initial concentration of acetaldehyde, then:

[CH₃CHO]₀ = P₀ ÷ RT

[CH₃CHO] = [CH₃CHO]₀ exp(-kt)

n(CH₃CHO) = [CH₃CHO]₀ V

n(CH4) = n(CO) = n(CH₃CHO)

Therefore, the total pressure at equilibrium is given by:

P = n(RT ÷ V) = [CH₃CHO]₀ (RT ÷ V) exp(-kt) + 2 [CH₃CHO]₀ (RT ÷ V)

P = P₀ exp(-kt) + 2P0

where P0 is the initial pressure of acetaldehyde (364 mmHg = 0.48 atm)

k = 1 ÷ (410 s [CH3CHO]³) = 0.000039 M⁻¹ s⁻¹

[CH₃CHO]₀ = P₀ ÷ RT = 0.48 atm ÷ (0.08206 L atm/mol K × 791 K) = 0.00706 M

P = P0 exp(-kt) + 2P0

P = 0.48 atm exp (-0.000039 M⁻¹ s⁻¹ × 3600 s) + 2 × 0.48 atm

P = 0.85 atm

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Answer:

it takes two hydrogen atoms for every oxygen atom to produce this reaction, so the mole ratio between hydrogen and oxygen is 2:1

Answer:

The d-block and transition metal are not interchangeable terms because the d-block elements are a subset of the transition metal elements. The transition metals are defined as the elements that have partially filled d orbitals, which includes the d-block elements as well as other elements that have partially filled d orbitals in other blocks, such as lanthanides and actinides. Therefore, while all d-block elements are transition metals, not all transition metals are d-block elements.

The buffering capacity increases when  the concentrations of both acetic acid and acetate are doubled.

A buffer is a solution that mitigates against changes in acidity and alkalinity. A buffer is usually made up a weak acid and its conjugate base or a weak base and its conjugate acid.

The buffering capacity of a buffer increases as the concentration of the concentration of the acid/base as well as its conjugate base/acid increases. Therefore, the buffering capacity increases when  the concentrations of both acetic acid and acetate are doubled.

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The current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.

To calculate the current in amperes, we need to use Faraday's laws of electrolysis and the stoichiometry of the reaction.

Faraday's laws state that the amount of substance produced or consumed during electrolysis is directly proportional to the quantity of electricity passed through the cell. The relationship is given by:

Q = nF

Where Q is the electric charge in coulombs (C), n is the number of moles of substance involved in the reaction, and F is Faraday's constant, which is equal to 96,485 C/mol.

In this case, the substance being produced is Cl2, and we know the mass of Cl2 produced, which is 4.8 x 10^5 g.

First, we need to calculate the number of moles of Cl2 produced:

Molar mass of Cl2 = 35.45 g/mol

Moles of Cl2 = mass / molar mass = (4.8 x 10^5 g) / (35.45 g/mol) ≈ 1.354 x 10^4 mol

Now we can calculate the quantity of electricity passed through the cell using Faraday's laws:

Q = nF

Q = (\(1.354 x 10^4\)mol) * (96,485 C/mol)

Q ≈ 1.308 x 10^9 C

The quantity of electricity is given in coulombs. To find the current, we need to divide this value by the time in seconds.

Given that the time is 18 hours, we convert it to seconds:

Time = 18 hours * 60 minutes/hour * 60 seconds/minute

Time = 6.48 x 10^4 seconds

Finally, we can calculate the current:

Current (I) = Q / Time

I = (1.308 x 10^9 C) / (6.48 x 10^4 s)

I ≈ 2.02 x 10^4 Amperes

Therefore, the current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.

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The pressure inside the tire is approximately 1.970796 newtons per square centimeter (N/cm²) when measured in those units.

To convert the pressure from pounds per square inch (psi) to newtons per square centimeter (N/cm²), we need to use the conversion factors between these units.

First, let's convert pounds to newtons:

1 pound = 0.45359237 kilograms

1 kilogram = 9.80665 newtons

Next, let's convert square inches to square centimeters:

1 square inch = 6.4516 square centimeters

Now, we can perform the conversion:

1 psi = (0.45359237 kg) × (9.80665 N/kg) / (6.4516 cm²)

≈ 0.070307 N/cm²

Therefore, the pressure inside the tire of 28.0 psi is approximately equal to 28.0 × 0.070307 N/cm², which is approximately 1.970796 N/cm².

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A homogeneous mixture is one that has a consistent chemical make-up. Homogeneous mixtures have only one phase, according to their definition, composition, and characteristics.

Examples. A combination with a uniform composition is said to be homogenous. Because the particles are distributed evenly, these mixtures have a consistent composition. There is only one phase to them. They are made up of molecular or atomic level ingredients and do not divide into layers. In colloquial words, homogeneous mixes are frequently referred to as solutions. The example that follows is one of the simplest. dissolve sugar in water. A homogenous mixture is a combination of ingredients combined so thoroughly that the separate ingredients are invisible. There will be the identical amounts of each ingredient in every sample of the mixture. Mixtures that are homogeneous can be solid, liquid, or gaseous.

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Answer:

Carbon Dioxide is and example of an element and Carbon is an example of compound

Answer:

Nobelium or Beryllium

The earliest energy source for humans was wood. Wood has been used as a primary energy source for humans since prehistoric times, making it the earliest known source of energy.

Early humans used wood to create fire, which was used for warmth, cooking, and light. As human societies developed, the use of wood expanded to include building materials, transportation, and other forms of energy production, such as charcoal.

While wood has been a reliable source of energy for humans throughout history, the widespread use of fossil fuels in the industrial era led to a decline in the use of wood as a primary energy source.

However, wood still plays an important role in many parts of the world, particularly in developing countries where it is used for cooking and heating. Additionally, the use of wood for energy is gaining renewed interest as a form of renewable energy and an alternative to fossil fuels.

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Answer:

A liquid of unknown composition: Unknown liquid

A liquid of known composition: Known liquid

A solid-liquid mixture of unknown composition: Unknown solid-liquid mixture

A solid of known composition: Known solid

Answer:

B. An organized way to test scientific ideas.

This extremely high temperature indicates that under normal conditions, you do not need to worry about your car tire bursting from overheating as it is unlikely to reach such extreme temperatures.

To determine the temperature at which the tire will burst, we can use the ideal gas law equation:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Rearranging the equation to solve for temperature, we have:

T = PV / (nR)

Given that the pressure threshold for bursting is 1.4 x 10^3 kPa, the volume is 30 L, and the number of moles of air is 2.5 mol, we can substitute these values along with the ideal gas constant R = 8.314 J/(mol K) into the equation.

T = (1.4 x 10^3 kPa) * (30 L) / (2.5 mol * 8.314 J/(mol K))

Converting kPa to Pa and L to m^3, and simplifying the equation, we find:

T ≈ 20,993 K

This extremely high temperature indicates that under normal conditions, you do not need to worry about your car tire bursting from overheating as it is unlikely to reach such extreme temperatures.

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