What is the density of an object with a mass of 180 grams and a volume of 45 cm3?
Plz answer fast

The bond order of Ne2+ is 2 according to the molecular orbital theory.

Bond order of Ne2+ according to molecular orbital theory is 1.5.

The bond order is the number of chemical bonds between a pair of atoms. Molecular Orbital (MO) theory is used to describe the bonding between two atoms. The bond order refers to the stability of the molecule, with the higher the bond order, the more stable the molecule.

There are three types of bond orders: Single bond (bond order = 1),

Double bond (bond order = 2), and Triple bond (bond order = 3).

The bond order of a molecule can be calculated by subtracting the number of electrons in the antibonding orbitals from the number of electrons in the bonding orbitals.

The bond order of Ne2+ according to molecular orbital theory is 1.5. The molecular orbital diagram of Ne2+ has 8 valence electrons. Since the two electrons are removed from the antibonding orbital, the number of electrons in the bonding orbitals is 10.

The bond order is calculated as: BO = (Nb - Na) / 2

Where, BO = Bond order Na = Number of electrons in antibonding orbitals

Nb = Number of electrons in bonding orbitals

Substituting the values, we get:

BO = (10 - 6) / 2

BO = 4 / 2

BO = 2

Therefore, the bond order of Ne2+ is 2 according to the molecular orbital theory.

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The change in potential energy, ΔU=Uf−Ui, of an alpha particle depends on the specific situation in which the particle is located.

In general, potential energy is defined as the energy stored within a system due to the position or configuration of its parts. For example, if an alpha particle is located at a point with a higher electrical potential than its initial position, it will have gained potential energy, resulting in a positive change in potential energy, ΔU>0. Conversely, if the alpha particle is located at a point with a lower electrical potential, it will have lost potential energy, resulting in a negative change in potential energy, ΔU<0. To determine the exact value of ΔU, the specific potential energy values at the initial and final positions of the alpha particle must be known.

To provide a specific value, you would need more information about the alpha particle's initial and final positions or the potential energy at these positions. However, keep in mind that the change in potential energy is the difference between the final and initial potential energies of the alpha particle.

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Answer:

\(Kc\frac{(Ba3N2)(H2O)^6}{(Ba(OH)2)^3(NH3)^2}\)

Explanation:

Because kc equals products/reactants hope this helps :)

Answer: I would say D. Carnivores have more available energy and are at a higher trophic level because they receive energy directy from herbiores.

Explanation: The grass gets its energy from the sun, the herbivore eats the grass which then gives the energy to the herbivore, then the carnivore eats the herbivore which gives the herbivore all of it's energy.

Hope This Helps!!! Have A Great Day!!!

Answer:

Spring tides happen 2 times each month at the New and Full phases

Neap tides happen 2 times each month at the First Quarter and Third Quarter phases

(a)CH₂ is a linear molecule, the bond angle is 180°. (b) In BeH₂, the bond angle is also 180°.

a. CH₂:

In the molecule CH₂, carbon (C) is bonded to two hydrogen (H) atoms. Since carbon has four valence electrons and each hydrogen has one valence electron, there are a total of four electrons surrounding the carbon atom. The electron arrangement around the carbon atom is tetrahedral, with a geometry of sp³ hybridization.

However, since CH₂ is a linear molecule, the bond angle is 180°.

b. BeH₂:

In the molecule BeH₂, beryllium (Be) is bonded to two hydrogen (H) atoms. Beryllium has two valence electrons, and each hydrogen has one valence electron, making a total of four electrons surrounding the beryllium atom. The electron arrangement around the beryllium atom is linear.

Therefore, in BeH₂, the bond angle is also 180°.

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Benzene can be produced by the use of three molecules of etheyne as shown.

The term benzene is a compound that is aromatic in nature. When we say that the compound is aromatic we mean that the compound is also satisfies the Huckel rule and there are [4n + 1] number of pi electrons in the molecule.

We can make a mole of benzene when we heat three moles of ethyne to a very high temperature. We have to recall that benzene is made up of three double bonds that are resonating and that the compound is quite stable. It does not undergo an addition reaction but it does undergo a substitution reaction.

The way that we can be able to produce benzene by the use of three molecules of ethyne have been shown in the image attached to this answer.

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The purpose of chromatography is separate a mixture of particles and it is a separation and analytical process.

What is Chromatography?

Chromatography is a separation and analytical process used to separate the component parts of a soluble mixture.

Chromatography is used to separate the different components of a mixture. Applications can be anything from a straightforward analysis of a compound's purity to a thorough separation of its constituent parts.

Therefore, the purpose of chromatography is to separate a mixture of particles.

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The number of moles of Helium gas that could occupy the container when the volume is increased to 500 mL is 9.05 mol.

We can use the combined gas law to solve this problem:

(P1 x V1) / (n1 x T1) = (P2 x V2) / (n2 xT2)

where;

We know that the pressure and temperature are constant, so we can simplify the equation to:

V1/n1 = V2/n2

Solving for n2, we get:

n2 = (V2n1) / V1

Plugging in the values, we get:

n2 = (500 mL * 4.00 mol) / 221 mL

n2 = 9.05 mol

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A. Zinc (Zn) is reduced in the reaction Zn + H2SO4 → ZnSO4 + H2.

B. Hydrogen (H) is oxidized in the reaction Zn + H2SO4 → ZnSO4 + H2.

The transformational nature of redox reactions involves the loss of energy by one or various atoms through losing vital particles we know as electrons which in turn is referred to as "oxidation", and simultaneously gaining energy from recipients receiving these particles known as "reduction". During this exchangeable process referred to as 'redox' , should any element go through this type of electron depletion we classify them as being 'oxidized'.

Conversely speaking if any element endures electron gain we regard them in chemistry terms as becoming 'reduced'. We correlate these electronic charges known as 'oxidation states' which represent numerically how many subatomic changes in individual specie atoms have transpired relative to a standard form of that atom.

Whether these oxidation states hold negative, positive, or no charges demonstrates how many electrons (if any) have been gained or lost from the initial stable configuration of the element in question.

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Complete question:

Refer to the following redox reaction and answer the following questions. Zn + H2SO4 → ZnSO4 + H2

A. Which element is reduced? I

B. Which element is oxidized?

The proper way to balancing the given equation is 3Ca(OH)₂+2H₃PO₄→Ca₃(PO₄)₂ +6H₂O

Balanced equations are those reactions in which each atom of reactants and products are present in same quantity on both sides of the equation.

Given chemical reaction is:
Ca(OH)₂ + H₃PO₄ → Ca₃(PO₄)₂ + H₂O

Let we discuss each given reaction to get the perfectly balanced equation:

In the above reaction number of hydrogens, calcium as well as of oxygens are not equal so that it is an unbalanced equation.

In the above equation all atoms are present in equal amount on both sides of the reaction, so that it is a balanced equation.

In the above reaction number of oxygen and hydrogen atoms are not equal so that the given equation is an unbalanced one.

In the above freaction all atoms are unequal so that given equation is an unbalanced equation.

Hence balanced equation is 3Ca(OH)₂ + 2H₃PO₄ → Ca₃(PO₄)₂ + 6H₂O.

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black hole

hope it helps

edit: neutron star

Answer:

Neutron Star

Explanation:

4.01 grams of Licl are needed to release this amount of heat

The gram is a unit of mass in the International System of Units (SI) that is equal to one thousandth of a kilogram. It was originally known as the gramme. Gram. This pen cap weighs around one gram. A weight scale like this one may provide a precise mass readout for many different things.

Mass of Licl required to release 5850J of heat to the surroundings.

Let x g Licl required.

Then x g ×∆H = 5850J

x g × 1.46 × 10³ = 5850

x = 5850/ 1.46 × 10³

x = 4.0068

so 4.01g Licl required.

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The image's various colours each stand for something.Power lies in colour. Our emotions, behaviours, and moods may all be affected. It may also serve as a source of knowledge. Although a person's reaction to colour might be influenced by their own experiences

Our psychological associations with colour have evolved culturally through the use of colour symbolism. Over thousands of years, some hues grew to signify particular sentiments or occasions in life. Depending on the civilization we are looking at, these definitions frequently change.

Colour may be used to convey action, affect mood, and even affect physiological responses. It is a potent communication tool. Physiological effects, such as elevated blood pressure, accelerated metabolism, and eyestrain, have been linked to specific colours.

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If you were running an experiment to determine the temperature at which beans sprout the fastest, the variable would be the temperature at which the beans are kept.

The variables in an experiment are those on which the experiment is performed. And the factors that will affect the result of the experiment. There are three types of variables. They are dependent, independent, and controlled. Here, the temperature would be the independent variable of the experiment.

Thus, the variable in the given experiment would be the temperature at which the beans are kept.

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398 mL of a 1.1 M NaBr solution can be prepared using the given solution.

To determine how many mL of a 1.1 M NaBr solution can be prepared, given that there is 82 mL of a 5.3 M NaBr solution,

we can use the dilution formula, which states:

M1V1 = M2V2

where M1 is the initial molarity, V1 is the initial volume, M2 is the final molarity, and V2 is the final volume.

Rearranging the formula, we can solve for V2:V2 = (M1V1) / M2

Substituting the values: M1 = 5.3

MV1 = 82 mL (initial volume)

M2 = 1.1 M (final molarity)

V2 = ? (final volume)

Therefore,V2 = (5.3 M × 82 mL) / 1.1 M

= 398.18 mL

≈ 398 mL

Hence, approximately 398 mL of a 1.1 M NaBr solution can be prepared using the given solution.

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Answer:

The work done by the gas expansion is 5875 J,

Since the work done is positive, the work is done by the gas on the surroundings.

Explanation:

Given;

change in internal energy, ΔU = -4750 J

heat transferred to the system, Q = 1125 J

The change in internal energy is given by;

ΔU = Q - W

Where;

W is the work done by the system

The work done by the system is calculated as;

W = Q - ΔU

W =  1125 - (-4750)

W = 1125 + 4750

W = 5875 J

Since the work done is positive, the work is done by the gas on the surroundings (energy flows from the gas to the surroundings).

Therefore, the work done by the gas expansion is 5875 J

Answer:

Seasonal Winds: Blow in opposite direction of normal winds  and cause droughts in winter.

Prevailing Winds: Blow mainly in one direction and move huge air masses.

Mountain Ranges: force coastal air masses to rise, cool, and  form rain clouds.

Explanation:

Hope this helps you, sorry for responding so late... have an amazing night, day, or evening

The term precipitation implies the falling of rain due to condensation of water vapor in the cloud.

The term precipitation implies the falling of rain due to condensation of water vapor in the cloud.  We must note that several factors affect precipitation in a given area.

The following phrases below are matched with how it affects precipitation;

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Answer:

✔ octane

CH3CH2CH2CH2CH2CH2CH2CH3

✔ butane

CH3CH2CH2CH3

✔ methane

CH4

✔ decane

CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3

✔ ethane

CH3CH3

Explanation:

An alkane contains only carbon and hydrogen. The following are the accurate names of the compounds;

An alkane is a compound whose only functional group is the carbon - carbon single bond. This compounds contain only carbon and hydrogen.

The correct names of the compounds are;

CH3CH2CH2CH2CH2CH2CH2CH3 - octane

CH3CH2CH2CH3 - butane

CH4 - methane

CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3 - decane

CH3CH3 - ethane

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Oxidation is the process of a substance gaining oxygen, losing hydrogen, or losing electrons.

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The procedure for swapping the titrant with the aliquot volume typically involves filling the buret with the titrant solution and adding it gradually to the solution in the flask until a reaction is complete.

However, if you were to put the NaOH solution in the Erlenmeyer flask and then fill the buret with the KHP solution, there are several procedural considerations that you would need to be aware of.

Firstly, it would be important to ensure that the buret is properly calibrated and that the volume of KHP solution dispensed is accurately recorded to avoid any errors in the final results.

Secondly, the NaOH solution in the Erlenmeyer flask should be stirred thoroughly to ensure that it is well-mixed before adding the KHP solution. This is to ensure that the reaction is completed efficiently and the endpoint is accurately determined.

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Answer:

3

Explanation:

Burning brightly in air is a very specific effect which only certain chemical makeups are able to produce.

Answer:

3- The substance burns brightly in air.

Explanation:

The substances which burn in air are called combustible. Oxygen (in air) is essential for combustion. During the process of combustion, heat and light are given out. Ignition temperature is the lowest temperature at which a combustible substance catches fire.

Answer:

273.1600 K

Explanation:

Triple point of water

The single combination of pressure and temperature at which liquid water, solid ice, and water vapor can coexist in a stable equilibrium occurs at exactly 273.1600 K (0.0100 °C; 32.0180 °F) and a partial vapor pressure of 611.657 pascals (6.11657 mbar; 0.00603659 atm)

Redox is the oxidation-reduction reaction that includes the gain and loss of electrons. The oxidation of the manganese changes from +4 to +2  and gets reduced.

In a redox reaction, the electrons are gained and lost by the chemical species. In oxidation, the electrons are lost by the species to another, while in reduction the electrons are gained by the species.

When the electrons are lost by the species their oxidation number gets increased, whereas when the species gains electrons their oxidation state decreases.

The oxidation number of manganese oxide and manganese(II) chloride is calculated as:

\(\begin{aligned}\rm Mn^{x}O_{2}^{2-}: \rm x -4 &= 0\\\\&= +4\end{aligned}\)

and,

\(\begin{aligned}\rm Mn^{x}Cl^{2-}: x -2 &= 0\\\\&= +2\end{aligned}\)

Therefore, the manganese is option A. reduced, and the oxidation number changes from +4 to +2.

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Answer:

True

Explanation: