Which of the following keeps the planets in their orbits in the Solar System?
A friction
B gravity
C magnetism
D pressure

The Cistercian order split from the Cluniac order to follow the rules of Saint Benedict more strictly.

The Cistercians, formally known as the Order of Cistercians (Latin: (Sacer) Ordo Cisterciensis, abbreviated as OCist or SOCist), are a Catholic religious order of monks and nuns who split off from the Benedictines and adhere to the Latin Rule, which incorporates Bernard of Clairvaux's contributions as well as the Rule of Saint Benedict. As a nod to the color of the "cuculla" or cowl (choir robe) worn by the Cistercians over their habits as opposed to the black cowl used by Benedictines, they are also known as Bernardines, after Saint Bernard himself, or as White Monks.

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The molecular orbitals for B₂, C₂, and N₂ are arranged in increasing energy levels. The highest energy orbital is a π* orbital, followed by a σ* orbital, and then a π orbital.

The molecular orbitals of B₂, C₂, and N₂ can be determined using molecular orbital theory.

In general, the molecular orbitals are arranged in order of increasing energy, starting from the lowest energy level, also known as the ground state, to the highest energy level, which is the excited state.

For B₂, the molecular orbitals are arranged in the following order: σ₁s, σ₁s, σ₂s, σ₂s, π₂p, σ₂p, and π₂p.

The highest energy orbital is π₂p, followed by σ₂p, and π₂p. The σ₂s and σ₁s orbitals are lower in energy than the π₂p, but higher in energy than the σ₂p orbital.

For C₂, the molecular orbitals are arranged in the following order: σ₁s, σ₁s, σ₂s, σ₂s, π₂p, π₂p, σ₂p, and σ₂p.

The highest energy orbital is σ₂p, followed by π₂p, and σ₂p. The π₂p orbital is lower in energy than the σ₂p orbital, but higher in energy than the σ*₂p orbital.

For N₂, the molecular orbitals are arranged in the following order: σ₁s, σ₁s, σ₂s, σ₂s, π₂p, σ₂p, π₂p, and σ₂p.

The highest energy orbital is σ₂p, followed by π₂p, and σ₂p. The π₂p orbital is lower in energy than the σ₂p orbital, but higher in energy than the σ*₂p orbital.

Overall, the trend in energy levels is similar for all three molecules, with the highest energy orbital being a π* orbital, followed by a σ* orbital, and then a π orbital.

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The direction of the impact is the direction of the ball R.

The direction of impact refers to the direction in which a force is applied to an object. It can be described as the line along which a force is transmitted into an object, and can be unidirectional or multidirectional.

The direction of impact is important in fields such as physics, engineering, and material science, as it affects how an object reacts to the applied force and the resulting damage or deformation. In this case, the direction of the impact is the direction that is moved by ball R.

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20 %

Explanation:

becuz 25 divided by 125 multiplied by 100 is 20

D) sodium chloride (NaCl) and hexane (c6h14) are most likely to form a solution when mixed.

Sodium chloride (NaCl) and hexane (C6H14) are two common substances that can form a solution when mixed. When these two substances are combined, the sodium chloride molecules interact with the hexane molecules and form a homogenous mixture.

This mixture allows for the two components to be evenly distributed throughout, creating a solution. The combination of sodium chloride and hexane is able to form a solution due to the polar nature of sodium chloride and the non-polar nature of hexane.

The polar nature of sodium chloride allows it to form strong hydrogen bonds with the non-polar hexane molecules, resulting in a homogenous mixture.

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Answer:

see below (I hope this helps!)

Explanation:

You are a student, therefore, the people who are the same "rank" as you are your fellow students, this makes them your peers.

Answer:

regolith

Explanation:

helium is in group 8 and period 1

The process of adding a solid to a  liquid to make a mixture is called Dispersion. The mixture can be a solution or a suspension.

For the mixture to be totally in a state of equilibrium, the mixture has to be a solution, which means that the solid particles have fully dissolved in the liquid, otherwise known as a solvent.

Dispersions could result in different mixtures which are named according to how they appear. An example is a suspension, which appears to be partly dissolved in the liquid to form a semi-solid mixture.

Dispersions could also result in emulsions and colloids, all of which have large particles and are non-crystalline in nature.

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Answer:

One mol of NaCl (6.02 x1023 formulas) has a mass of 58.44 g.

The number of moles of sodium chloride in a 321.8 g sample is 5.5 moles. Details about number of moles can be found below.

The number of moles of a substance in a particular mass of that compound can be calculated as follows:

no of moles = mass ÷ molar mass

molar mass of NaCl = 58.5g/mol

No of moles of sodium chloride = 321.8g ÷ 58.5g/mol

no of moles = 5.5 moles

Therefore, the number of moles of sodium chloride in a 321.8 g sample is 5.5 moles.

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The electron configuration of bromine is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁵. To determine the number of core electrons, we need to identify the electrons in the inner energy levels or shells.

In the case of bromine, the innermost energy level is the 1s orbital, which contains 2 electrons. Moving outward, the next energy levels, 2s and 2p orbitals, contain a total of 8 electrons. The 3s and 3p orbitals hold another 8 electrons, followed by the 4s and 3d orbitals with a combined total of 20 electrons. Finally, the 4p and 5s orbitals accommodate 7 electrons. Therefore, the core electrons in bromine are the electrons in the innermost energy levels: 1s² 2s² 2p⁶ 3s² 3p⁶. Adding them up, we find that bromine has 28 core electrons. These electrons are not involved in chemical bonding and are shielded by the valence electrons in the outer energy levels.

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Answer:

33

Explanation:

The atomic number of an element configuration 2,8, 8,2,13​ is 33.

The electron configuration is defined as the arrangement of electrons in atomic or molecular orbitals of an atom. The sum of electrons in different orbitals shown in the electron configuration represents the atomic number of the atom.

So, atomic number of the element configuration 2,8, 8,2,13​ is 33.

Answer:

the neutralization reaction occurs

Answer:

MgO.

Explanation:

charges of both satisfy one another (balanced) -- producing a compound MgO.

Answer:

Explanation:

All compounds are molecules, but not all molecules are compounds. That is because a molecule can be made up of two atoms of the same kind, as when two oxygen atoms bind together to make an oxygen molecule. However, all compounds are made up of two or more different types of atoms.

Answer:

the last one

Explanation:

Answer:

Proportion : The Equality of two ratios

Equation:  Values of two mathematical expressions are equal.

Formula: Mathematical relationship or rule expressed in symbols.

Explanation:

Answer:

magnesium nitride

Explanation:

Answer:

Compounds are substances composed of two or more elements chemically combined that can be separated into simpler substances only by chemical means. Water, for example, is a compound because pure water is composed of only H2O molecules.

Pls choose me as brainliest!

Answer:

-1

Explanation:

electrons are negative

B. The partial pressure of N2 is 101 kPa

Given

volume = 22.4 L

1.0 mol of nitrogen and 2.0 mol of hydrogen at 0°C

Required

Total pressure and partial pressure

Solution

Ideal gas law :

PV = nRT

n total = 3 mol

T = O °C + 273 = 273 K

P = nRT/V

P = 3 x 0.08205 x 273 / 22.4

P total = 3 atm = 303,975 kPa

P Nitrogen = 1/3 x 303.975 = 101.325 kPa

P Hydrogen = 2/3 x 303.975 = 202.65 kPa

Answer:The partial pressure of N2 is 101 kPa

Explanation:

Answer:

aa

Explanation:

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, the correct option is option A.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter. A sedimentary rock layer is between 10,000 and 10,500 years old. Sedimentary rock is a type of rock.

Therefore, the correct option is option A.

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The mass of H2O2 dissolved is not directly provided in the given information. Additional calculations or data are required to determine the mass of H2O2 dissolved.

The mass of hydrogen peroxide (H2O2) dissolved in 100 ml of water is calculated to be approximately X grams.

To determine the mass of H2O2 dissolved, we can use the balanced chemical equation for the reaction between hydrogen peroxide and potassium permanganate:

5H2O2 + 2KMnO4 + 3H2SO4 → 5O2 + 2MnSO4 + 3H2O + K2SO4

From the balanced equation, we can see that the mole ratio between H2O2 and KMnO4 is 5:2.

Given that 21 ml of 1.68 M KMnO4 solution was required for the titration, we can calculate the number of moles of KMnO4 used:

Volume of KMnO4 solution = 21 ml = 0.021 L

Molarity of KMnO4 solution = 1.68 M

Number of moles of KMnO4 = Molarity × Volume

= 1.68 M × 0.021 L

= 0.03528 moles

Using the mole ratio, we can determine the number of moles of H2O2:

Number of moles of H2O2 = (5/2) × Number of moles of KMnO4

= (5/2) × 0.03528 moles

To convert moles of H2O2 to grams, we need to multiply by its molar mass. The molar mass of H2O2 is approximately 34.02 g/mol.

Mass of H2O2 = Number of moles of H2O2 × Molar mass of H2O2

= (5/2) × 0.03528 moles × 34.02 g/mole

The mass of hydrogen peroxide (H2O2) dissolved in 100 ml of water is approximately X grams. This value was determined by titrating the H2O2 solution with a 1.68 M KMnO4 solution, and the titration required 21 ml of the KMnO4 solution. The calculation involved using the balanced chemical equation, molar ratios, and the molar mass of H2O2 to convert the volume of KMnO4 used to the mass of H2O2 dissolved.

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Answer:

Below!

Explanation:

To calculate the average acceleration you can use this formula....

     acceleration = finalvelocity - initial velocity / time

Because the object begins at rest we know that our initial velocity is 0 m/s

Our final velocity is 7 m/s, and our time is 0.1 seconds....

Plugging in our values :

     acceleration = 7m/s - 0.1 m/s / 0.1 s

                           = 7 m/s / 0.1s

                           = 70 m/s^2

This is already at the proper amount of sig figs so we're good to go!

Therefore the average acceleration of this object is 70 m/s^2

Hope this helps! Best of luck <3

\(\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}\)

\(\\ \sf\longmapsto Acceleration=\dfrac{7-0}{0.1}\)

\(\\ \sf\longmapsto Acceleration=\dfrac{7}{0.1}\)

\(\\ \sf\longmapsto Acceleration=70m/s^2\)

Answer:

0.0698

Explanation:

k = Ae^-Ea/RT

A= frequency factor = 8.0 x 10^11 /s

Ea = activation energy= 250 * 10^3J/mol

R= 8.314 J/mol/K

T = 1000K

Substituting values;

k = 8.0 x 10^11 * e^-250 * 10^3/ 8.314 * 1000

k = 0.0698

Answer:

See below.

Explanation:

A dynamic equilibrium in chemistry refers to a situation in which the reaction of reactants to form product(s) in which the products can reverse the reaction by falling apart and back to the reactants.  Reactions that go to completion are irreversible.  In cases where reactants form products (in a forward reaction), but the products can change back into reactants (in a reverse reaction) are called reversible.

An example is the reaction of carbon dioxide with water to form carbonic acid (think soft drinks).

     CO2(g)+H2O(l) ⇌ H2CO3(aq)

As anyone who has opened a warm can of soda knows, it can erupt suddenly and spray anyone nearby with a shower of bubbly, and sticky, soda.  Carbonic acid is unstable and will happily decompose back to it's reactant molecules if given the chance.

Experience tells us what to expect when giving a brother or sister a can of warm soda that you've shaken hard for a minute.  But if you are a chemist, such responses aren't always easy to predict with a new reaction.  Equilibrium constants were developed to provide a means for presdicting the exstent of these reactions.  They are used in equilibrium equations to predict the concentrations of products and reactants, given conditions of temperature and pressure, under defined conditions of temperature and pressure.

The equations themselves include concentrations as the key input.  In the carbonic acid example, if one were to add excessive amounts of one of the reactants, one would expect the equilibrium to "shift to the right."  This simply means that more carbonic acid would be made.  The chances of the forward reaction increase as concentration increases.  The amount of CO2 given off as a gas depends on the concentration of the CO2 in the gas phase, which is given by the partial pressure of the gas.

The space above the soda and the cap represents one place that the CO2(g) can escape the solution.  The CO2 pressure in the gas phase is a measure of it's concentration.  An equilbium calculation takes this concentration in account when decidng how much much of each component is present.  Other compouns that are present may also impact the equilibrium since they may interfere with one of the reaction steps.  Pressure and emperature either dirctly impact the concentration (e.g., gases) or they affect the "effective" concentrations of the compunds.  A higher temperature creates more collisons between reactant molucules that may change the equilibrium constant..

The diagram that show the correct electron configuration is the second option. ⬆⬇1s,  ⬆⬇2s, ⬆⬆⬆2p.

The electronic configuration is the representation of electron present indifferent energy levels is an atom. The different type of orbitals are s, p, d, and f.

Thus, the correct option is 2, ⬆⬇1s,  ⬆⬇2s, ⬆⬆⬆2p.

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the wavelength of a single photon of UV-A electromagnetic radiation that possesses an energy of 6.2 x 10^-19 J is approximately 3.210 x 10^-5 cm. The option closest to this answer is 3.2 x 10^-5 cm.

explain about energy ?

The energy E of a photon is related to its wavelength λ by the following formula:

E = h * c / λ

where h is the Planck's constant, c is the speed of light in a vacuum, and λ is the wavelength of the photon.

We are given the energy of a single photon of UV-A electromagnetic radiation as 6.2 x 10^-19 J. The values of h and c are:

h = 6.626 x 10^-34 J s

c = 2.998 x 10^8 m/s (the speed of light in a vacuum)

To convert the wavelength to centimeters, we can use the conversion factor of 1 m = 100 cm.

Now we can rearrange the formula to solve for the wavelength λ:

λ = h * c / E

Substituting the given values, we get:

λ = (6.626 x 10^-34 J s) * (2.998 x 10^8 m/s) / (6.2 x 10^-19 J)

λ = 3.210 x 10^-7 m = 3.210 x 10^-5 cm (after conversion)

Therefore, the wavelength of a single photon of UV-A electromagnetic radiation that possesses an energy of 6.2 x 10^-19 J is approximately 3.210 x 10^-5 cm. The option closest to this answer is 3.2 x 10^-5 cm.

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Answer:

sediments consist of rocks and minerals, as well as the remains of plants and animals

Explanation: