What is the difference between the formula of magnesium oxide and oxygen?

Answer:

i wanna say its the third one

Explanation:

but im not sure

Answer:

i think it is the second

Explanation:

but not sure

Answer:

Explanation:

The most prominent function of mitochondria is to produce the energy currency of the cell, ATP (i.e., phosphorylation of ADP), through respiration and using sugar as fuel, and to regulate cellular metabolism .

Answer:

The north atlantic contains the warmest and saltiest water of the major oceans, the southern ocean is the coldest, the north pacific has the lowest average salinity. This density signature is locked into the water parcel when it sinks

Explanation:

i think

Answer:

The answer to this is A. One kind of atom

Explanation:

The other options make no sense whatsoever. But enjoy.

I hope this helped.

Answer:

A. One kind of atom

Explanation:

The pH of a 0.23 M solution of the given monoprotic weak acid is approximately 1.42.

To determine the pH of a 0.23 M solution of a monoprotic weak acid with a Ka value of 7.3×10^(-6), we can use the Henderson-Hasselbalch equation:

pH = -log10(sqrt(Ka * C))

where Ka is the acid dissociation constant and C is the concentration of the acid.

Substituting the given values into the equation:

pH = -log10(sqrt(7.3×10^(-6) * 0.23))

Calculating the expression within the square root:

sqrt(7.3×10^(-6) * 0.23) ≈ 1.442×10^(-3)

Taking the square root:

sqrt(1.442×10^(-3)) ≈ 0.038

Substituting this value into the Henderson-Hasselbalch equation:

pH = -log10(0.038)

Calculating the logarithm:

pH ≈ 1.42

Therefore, the pH of a 0.23 M solution of the given monoprotic weak acid is approximately 1.42.

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Specific heat is the quantity of heat required to raise the one gram of substance by one degree Celsius. Both A and B is correct.

Specific heat is the quantity of heat required to increased the temperature of one gram of a substance by one Celsius degree.

The units of specific heat are usually measure in calories or joules per gram per Celsius degree. For example, the specific heat of water is 1 calorie (or 4.186 joules) per gram per Celsius degree.

The specific heat is the amount of heat required to raise a gram of water by one degree Celsius. When heat  is absorbed by H₂O, the hydrogen bonds starts to break and the  water molecules are move. This means that water can absorb heat  before change in temperature.

Thus, both A and B are correct.

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Among the given statements, the one that is true is:The equilibrium constant does not change even if the temperature changes.Explanation:The statement that is true among the given statements is "The equilibrium constant does not change even if the temperature changes".

Equilibrium constant (Kc) of a reaction is an essential parameter that determines the position of the equilibrium of the reaction. The value of the equilibrium constant is fixed at a particular temperature.However, the value of the equilibrium constant can change if the temperature is changed. The equilibrium constant depends on the temperature of the system. This means that if the temperature of the system is changed, the value of the equilibrium constant will also change.Therefore, the only statement that is true among the given statements is that the equilibrium constant does not change even if the temperature changes.

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Answer:

Silicon and Phosphorus

Explanation:

They are right next to each other and would have the closest similarities in the case of: Atomic Weight, Density, Oxidation States, Phase, Period, and their Atomic radius

Answer:

If the reaction requires energy, it is often indicated above the arrow. A capital Greek letter delta (Δ) is written on top of the reaction arrow to show that energy in the form of heat is added to the reaction; hv is written if the energy is added in the form of light.

Answer:

it means that to get the product, the reactants were heated

Answer:

a beam of electrons emitted from the cathode of a high-vacuum tube.

Explanation:

Cathode rays (also known as electron beam or e-beam) are electron waves that can be used in vacuum tubes.

A strong push would mean a large magnitude of force and vice versa a weak push would mean a small magnitude.

Answer:

same amount of matter exists before and after the change—none is created or destroyed

Explanation:

example

water will have the same mass when it freezes into ice

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There are approximately 1.795 moles of nitrogen (N) in 79.0 g of nitrous oxide ( \((N_2O)\)).

To determine the number of moles of nitrogen (N) in 79.0 g of nitrous oxide \((N_2O)\), we need to use the molar mass of  \((N_2O)\) and the concept of molar mass conversion.

The molar mass of  \((N_2O)\) is calculated by adding the atomic masses of nitrogen (N) and oxygen (O):

Molar mass of  \((N_2O)\) = \((2 \times \text{atomic mass of N}) + \text{atomic mass of O}\)

The atomic mass of N is approximately 14.01 g/mol, and the atomic mass of O is approximately 16.00 g/mol. Substituting these values into the equation, we get:

Molar mass of  \((N_2O)\) = \((2 \times 14.01 \, \text{g/mol}) + 16.00 \, \text{g/mol}\)

                   = \(28.02 \, \text{g/mol} + 16.00 \, \text{g/mol}\)

                   = \(44.02 \, \text{g/mol}\)

Now, we can use the molar mass to convert the given mass of  \((N_2O)\) into moles:

Number of moles of  \((N_2O)\) = \(\frac{{{mass of N_2O}}}{{{molar mass of N_2O}}}\)

                          = \(\frac{{79.0 \, \text{g}}}{{44.02 \, \text{g/mol}}}\)

                         \(\approx 1.795 \, \text{mol}\)

Therefore, there are approximately 1.795 moles of nitrogen (N) in 79.0 g of nitrous oxide ( \((N_2O)\)).

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Answer:

600 cm^3

Explanation:

The volume of a coke cup is 600 ml. So the volume in cubic centimeter is 600 cm^3

Volume is defined as measure of 3 dimensional space occupied by a matter, substance or enclosed by a surface.

Volume is measured in cubic unit.

Cubic centimeter is commonly used as the SI unit of volume.

One cubic centimeter correspond to the volume is equal to one millimeter.

Cubic centimeter is used to measure the volume of small things.

As

    1 cm^3 = 1 cm

    1cm^3 = 1ml

So

    600 cm^3 = 600 ml

Thus, volume of a coke cup is 600 ml. So the volume in cubic centimeter is 600 cm^3

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Answer:

yes it chemical to electrical to radiant energy

Explanation:

correct

The percentage dissociation of H₂ is 0.0814%.

The percentage dissociation of O₂ is 0.0335%.

The percentage dissociation of I₂ is 94.6%.

The balanced chemical equation:

H₂(g)⇄2H(g)

ΔG0=2(106,760 J/mol)

-RT lnK=2*106,760 J/mol

-(8.3145 J/K/mol)(200 K) ln K=2*106,760 J/mol

Solving for K,

K=2.65*10^-6

On calculation, the percentage dissociation of H₂ is 0.0814%.

The balanced chemical equation:

O₂(g)⇄2O(g)

ΔG0=2(121552 J/mol)

-RT lnK=2*121552 J/mol

-(8.3145 J/K/mol)(200 K) ln K=2*121552 J/mol

Solving for K,

K=4.48*10^-7

On calculation, the percentage dissociation of O₂ is 0.0335%.

The balanced chemical equation:

I₂(g)⇄2I(g)

ΔG0=2(-29410 J/mol)

-RT lnK=2*-29410 J/mol

-(8.3145 J/K/mol)(200 K) ln K=2*(-29410) J/mol

Solving for K,

K=34.37

On calculation, the percentage dissociation of I₂ is 94.6%.

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The polar molecules with dipole-dipole forces among the given options are HCl (b), BI₂Cl (d), and PH₃ (e).

a. Cl₂: The molecule is composed of two identical atoms (Cl), so the electronegativity difference is zero, and there is no dipole moment. Cl₂ is a nonpolar molecule.

b. HCl: HCl has a significant electronegativity difference between hydrogen (H) and chlorine (Cl), resulting in a dipole moment. HCl is a polar molecule and has dipole-dipole forces.

c. BF₃: The Lewis structure of BF₃ reveals a trigonal planar geometry with boron (B) in the center and three fluorine (F) atoms surrounding it. The symmetry of the molecule cancels out the dipole moments, making BF3 a nonpolar molecule.

d. BI₂Cl: Based on the Lewis structure, the molecule has a central iodine (I) atom bonded to two other iodine atoms and one chlorine (Cl) atom. The asymmetry of the molecule and the electronegativity difference between I and Cl result in a net dipole moment. BI₂Cl is a polar molecule and has dipole-dipole forces.

e. PH₃: The Lewis structure of PH₃ shows a pyramidal geometry with phosphorus (P) in the center and three hydrogens (H) atoms surrounding it. The geometry leads to an uneven distribution of electrons, making PH₃ a polar molecule with dipole-dipole forces.

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Answer: equal to the number of electrons gained.

Answer:

Electrostatic attraction between oppositely charged ions

Explanation:

involve the formation of an octet of electrons in their valence shells, except for hydrogen which needs a duet of electrons

Answer:

5, the last would be incomplete

Explanation:

The first, inner cloud has 2 electrons, then 8, then 8, then 8, then 3.

The plant’s production of carbohydrates stops producing high-energy sugars altogether.

When carbon dioxide is completely removed from a plant's environment it is expected that the plant will stop producing energy-rich sugars altogether.CO2 is required for plants to photosynthesize. So without CO2, plants have no way to make energy. In this scenario, it will probably wither.

Carbon dioxide is an important greenhouse gas and helps trap heat in the atmosphere. Without them, our planet would be uninhabitable and cold. Plant photosynthesis produces oxygen and carbohydrates in a strict ratio, so we run out of oxygen as soon as we eat. But lethal levels of carbon dioxide will be reached long before these things happen.

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This is the reaction that's why I have added an image kindly check the attachments.

What is an aromatic compound?

Organic compounds with one or more aromatic rings are referred to as "mono- as well as polycyclic aromatic hydrocarbons". Benzene is the parent compound of aromatic compounds. Before their basic chemical properties were understood, molecules were once grouped together based on smell, giving rise to the term "aromatic." The way that aromatic compounds are currently defined has nothing to do with how they smell. Since one of the heteroatoms—oxygen, nitrogen, or sulfur—replaces at least one carbon atom in the CH group, heteroarenes are chemical compounds that share many similarities. Furan, a heterocyclic compound with such a five-membered ring containing a single oxygen atom, as well as pyridine, a heteroatoms compound with a 6 ring containing only one nitrogen atom, are examples of non-benzene compounds to aromatic properties.

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Answer: a c 31 45 65 nitrogen

Explanation:

The 0.064 g of NH3 are needed to provide the same number of molecules as in 0.55 g of SF6.

To calculate the number of molecules in 0.55 g of SF6, we need to convert the mass of SF6 to the number of moles and then use Avogadro's number to convert the moles to molecules.

Then, we can use the same number of molecules to calculate the mass of NH3 needed.

1. Calculate the number of moles of SF6:

molar mass of SF6 = 32.06 + 6(18.998) = 146.06 g/mol

moles of SF6 = 0.55 g / 146.06 g/mol = 0.003766 mol

2. Calculate the number of molecules of SF6:

number of molecules = moles of SF6 x Avogadro's number

number of molecules = 0.003766 mol x 6.022 x 10\(^23\)/mol = 2.267 x 10\(^21\) molecules

3. Calculate the mass of NH3 needed:

molar mass of NH3 = 14.01 + 3(1.008) = 17.03 g/mol

moles of NH3 = number of molecules / Avogadro's number

moles of NH3 = 2.267 x 10\(^21\) / 6.022 x 10\(^23\)/mol = 0.00377 mol

mass of NH3 = moles of NH3 x molar mass of NH3

mass of NH3 = 0.00377 mol x 17.03 g/mol = 0.064 g

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Answer:

202?

Explanation:

The sponge is unsaturated when it is taking in more water. It becomes saturated when it stops taking in water. It is supersaturated when water starts oozing out from the sponge.

A saturated solution contains just as much solute as it normally hold at a particular temperature. An unsaturated solution contains less solute than it can normally hold at a particular temperature. A supersaturated solution contains more solute than it can normally hold at a particular temperature.

We can use a sponge to model these three scenario as follows;

Water continues to enter into the sponge when it is unsaturated, this continues until the sponge becomes saturated with water and takes in no more water. When the sponge becomes supersaturated, water begins to ooze out from the sponge because it can no longer hold more water.

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Approximately 597.2 kilowatt-hours (kWh) of electrical energy are produced by the wind turbine per month.

We may use the following conversion factors to change the energy produced by the wind turbine from joules to kilowatt-hours:

1 kilowatt-hour (kWh) = 3.6 x 10^6 joulesGiven:

Energy generated by wind turbine = 2.15 x 10^12 J

Now that we know how much energy the wind turbine produces in kWh, we can compute it as follows:

Kilowatt-hours (kWh) of energy are equal to (2.15 x 10^12 J) / (3.6 x 10^6 J/kWh)

Energy in kilowatt-hours (kWh) = 597.2 kWh (rounded to one decimal place)

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Typically, nitrogen atoms are composed of electrons, protons, and neutrons. an isotope of nitrogen could have more number of neutrons than usual nitrogen atom.

What is proton ?

Protons include the H+ ion or the hydrogen atom's nucleus. Regardless of the isotope, each hydrogen atom has one proton, each helium atom has two, each lithium atom has three, and so on.

What is electron ?

It is possible for an electron to be free or linked to an atom. An electron is a negatively charged subatomic particle (not bound). There are three main types of particles in an atom: protons, neutrons, and an electron that is bonded to an atom. The nucleus of an atom is composed of protons, neutrons, and electrons.

Therefore, nitrogen atoms are composed of electrons, protons, and neutrons. an isotope of nitrogen could have more number of neutrons than usual nitrogen atom.

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Answer:

Conduction

Explanation:

Conduction seems to be the mechanism whereby heat energy is transferred from adjacent molecules by interactions. In solids and liquids, where even the objects are near to each other, conduction happens more easily than in liquids, where even the molecules are farther separated.

Answer:

225 mL of water must be added.

Explanation:

First we calculate how many HCl moles are there in 516 mL of a 0.191 M solution:

Now we use that number of moles (that remain constant during the dilution process) to calculate the final volume of the 0.133 M solution:

We can calculate the volume of water required from the volume difference: