the particle that move around the nucleus is are
​

The lewis electron-dot diagram which represents the bonding in potassium iodide, KI is give in image attached.

The correct answer choice is option 1.

The lewis structure can simply be defined as those diagrammatic chemical representations which describes the bonding between atoms in a particular molecular structure of a chemical substance. From the context of the above given task, the structure is bonded by eight different electrons.

The importance of lewis electron-dot structures cannot be overemphasized. Some of its significances are as follows:

In conclusion, we can now confirm from the explanation given above that potassium iodide is solid chemical compound.

The complete image of the options of the question is also attached.

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Answer:

1. [H⁺] = 1.58×10¯¹⁰ mol/L

2. pH = 9.8

3. pOH = 4.2

Explanation:

We'll begin by calculating the pOH of the solution. This can be obtained as follow:

Concentration of Hydroxide ion [OH¯] = 5.8×10¯⁵ mol/L

pOH =?

pOH = –Log [OH¯]

pOH = –Log 5.8×10¯⁵

pOH = 4.2

Next, we shall determine the pH of the solution. This can be obtained as follow:

pOH = 4.2

pH =?

pH + pOH = 14

pH + 4.2 = 14

Collect like terms

pH = 14 – 4.2

pH = 9.8

Finally, we shall determine the concentration of Hydrogen ion [H⁺] in the solution. This can be obtained as follow:

pH = 9.8

Concentration of Hydrogen ion [H⁺] =?

pH = –Log [H⁺]

9.8 = –Log [H⁺]

Multiply through by –1

–9.8 = Log [H⁺]

Take the anti log of –9.8

[H⁺] = antilog (–9.8)

[H⁺] = 1.58×10¯¹⁰ mol/L

SUMMARY:

1. [H⁺] = 1.58×10¯¹⁰ mol/L

2. pH = 9.8

3. pOH = 4.2

The conditions of temperature and pressure in which a sample of CO₂ (g) would behave least like an ideal gas are high temperature and high pressure; 150°C and 300 kPa, option C

An ideal gas is any gas whose molecules obey the gas law and whose behavior follows the ideal gas behavior.

The behavior of ideal gases is as follows:

For a given gas to behave as an ideal gas, it must be under conditions of extremely high temperatures and low pressure.

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Answer:

beryllium atom

Explanation:

An atom with two protons is always a helium atom. If scientists count four protons in an atom, they know it's a beryllium atom.

Answer

Explanation

Note: The reaction is a double replacement reaction in which two soluble ionic compounds react in an aqueous solution to form an insoluble solid.

In this case, a solution of sodium carbonate, Na2CO3, will contain

The complete balanced equation that occurs when sodium carbonate is added to hard water is

Red blood cells

[•] More in numbers.

[•] No antibodies present in these cells.

White blood cells

[•] Less in numbers

[•] Antibodies are present in these cells.

A liquid at 50 degrees Celsius would have a melting point of 50 degrees Celsius and a boiling point of approximately 173.15 degrees Celsius.

What is the liquid?

iquid is a state of matter that has a definite volume, but does not have a fixed shape. It is one of the four fundamental states of matter, along with solid, gas, and plasma. Liquids tend to have a greater volume than solids, but geneLrally take the shape of their container. Examples of liquids include water, milk, blood, gasoline, and oil. Liquids are composed of molecules that tend to have greater mobility and can easily flow past each other. Depending on the temperature, pressure, and composition of the liquid, it can undergo changes in the state of matter.

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Answer:

Explanation:

Total moles = 300 + 500 = 800 moles

mole fraction of carbon dioxide = 300 / 800 = 3 / 8

water = 500 / 800 = 5 / 8

Total pressure = 21 atm

partial pressure of water = total pressure x mole fraction of water

= 21 x 5 / 8

= 13.125 atm

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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Anything that includes water as a solvent is called an aqueous solution.

Isotopes are the elements which have same atomic number but different mass numbers.

Same atomic number tells that the number of protons present in those elements are same but different mass number tells that the number of nucleons is not the same.

These elements share same position in the periodic table and are stable. With the stability of isotopes it means they do not emit radiations.

The unstable isotopes are those isotopes which emit radiations and this might happen due to the atomic defect that shifts the position of particle, creating F-center which emits radiations.

These isotopes undergo radioactive decay. These decays can be alpha-decay, beta(+) decay or beta(-) decay.

Therefore, unstable isotopes means the isotopes of elements which emit radiations.

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Answer:

NaOH

Explanation:

NaOH is among the water soluble bases

They describe different forms of matter, solid and liquid. As well as both being entirely differently structured forms of matter.

They distinguish between solid and liquid matter. In addition to being completely different types of matter.

Matter is defined as everything that takes up space other words, the "material" that makes up the universe.

All matter is composed of substances known as elements, each of which has unique chemical and physical properties and cannot be decomposed into other materials through ordinary chemical reactions.

Atoms and molecules make up some of the material in the category of solids, liquids, and gases.

The matter that makes up wood have characteristics of any solid, i.e., high intermolecular force of attraction that holds it shape.

The matter that is making water will have liquid characteristics, which do not have a particular shape and will have weak intermolecular forces of attraction.

Thus, this is the chief difference between the "matter that makes up wood" and the "matter that makes up water".

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The formal charge of the nitrogen atom present at the center in dinitrogen sulfide is +1.

Formal charge:

The formal charge relates the presence of electrons on the atom when it is not present in a molecule and when it present in a molecule.

Lewis structure:

The structural representation of a compound by showing the electrons present around the atom with dots is called the Lewis dot structure.

The three possible Lewis structures of dinitrogen sulfide are shown below.

However, the best Lewis structure among those is first one. The central nitrogen atom is carrying a positive charge while the sulfur atom has a negative charge. The charges on these atoms are most stable thereby making the compound stable.

Therefore, the formal charge on the central nitrogen atom is +1.

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Yes, the reaction between methanol and oxygen to give formic acid and water is a redox reaction.

Redox reaction is an abbreviation for "reduction-oxidation" reaction. In a redox reaction, there is a transfer of electrons from one molecule to another molecule. The oxidation state of the reactants and products will change. Methanol is a reducing agent and oxygen is an oxidizing agent. Methanol reduces oxygen, and oxygen oxidizes methanol.

The reaction between methanol and oxygen to give formic acid and water is a redox reaction. In this reaction, methanol is oxidized to form formic acid, while oxygen is reduced to form water. The oxidation state of carbon in methanol goes from -2 in methanol to +2 in formic acid, indicating that it has been oxidized. The oxidation state of oxygen in oxygen goes from 0 to -2 in water, indicating that it has been reduced.

Therefore, this reaction involves both oxidation and reduction and is a redox reaction.

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Answer:

acting together to break down rocks and minerals to form soil.

Explanation:

There are a whole range of weathering processes at work near the surface of the soil, acting together to break down rocks and minerals to form soil. ... As rocks and sediments are eroded away, so more of the solid rock beneath becomes vulnerable in turn to weathering and breakdown.

Answer:

A) gain an electron and increase in size

Explanation:

Fluorine is a Group 17 element, making it a halogen. This means that it has 7 valence electrons in its outer shell. It only needs one more electron to fill its outer shell and gain stability. When fluorine becomes an ion, it gains an electron and becomes F⁻. Adding electrons creates a larger ion because the electrons occupy a larger volume due to mutual repulsions pushing them apart.

Hope that helps.

When a fluorine atom becomes an anion, it will gain an electron and increase in size. Therefore, option (A) is correct.

An ion is a chemical specie that holds a positive or negative charge. The term ‘ion’ refers to atoms or molecules with non-zero net charges associated with them. Therefore, all ions have either a greater number of electrons than protons in their atomic structures or a greater number of protons than electrons.

If the number of protons is greater than electrons are termed to hold a net positive charge and are commonly referred to as cations. The ions that contain a greater number of electrons than protons hold a net negative charge and are known as anions.

The electronic configuration of the fluorine is 1s²2s²2p⁵. As the fluorine atom accepts one electron in its valence shell it becomes anion F⁻. The number of protons is less than electrons therefore effective nuclear charge decreases and the size of the ion increases.

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Answer:14,5 grams of K2O

Explanation:

The density of the metal is 1800 kg/m^3.

To find the density of the metal in kg/m^3, we need to convert the volume and mass to the appropriate units.

The volume of the metal is given in cm^3, but we need to convert it to m^3:

25 cm^3 = 0.000025 m^3

The mass of the metal is given in grams, but we need to convert it to kilograms:

45 g = 0.045 kg

Now we can use the formula for density, which is:

density = mass / volume

Substituting the values we have:

density = 0.045 kg / 0.000025 m^3

density = 1800 kg/m^3

Therefore, the density of the metal is 1800 kg/m^3.

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Answer:

High ground dont do any thing but get to high ground and get as far away

Explanation

Answer:

There are several ways to prepare for a tsunami. The most important safety measure is to recognize the warning signs of a tsunami, which include an earthquake and the rapid receding of water from shore. In addition to knowing the warning signs of a tsunami, it is important to plan an evacuation route and put together a disaster supply pack that includes food, water, first aid supplies, clothing, bedding, etc. Lastly, if you hear an official tsunami warning or experience any of the warning signs, evacuate as quickly as possible and move to higher ground.

Explanation:

Answer:

No.

Explanation:

Outer space would not be an ideal spot for a concert for many reasons. One of which, is that there is no sound in space. On Earth, sound travels through air molecules. In outer space there are no air molecules for the sound vibrations to bounce off of.

For many reasons, holding a concert in outer space would not be a good idea. One of them is that sound does not exist in space. Sound moves through air molecules on Earth. There are no air molecules for the sound waves to bounce off of in space.

The term outer space is defined as the region beyond a planet's atmosphere. It has far few molecules, with lots of empty space between them so, it's called as outer space.

The sound travels through the vibration of particles, and space is a vacuum. On Earth, sound mostly travels to our ears by way of vibrating air molecules, but in near-empty regions of space there are no particles to vibrate therefore, there is no sound.

Thus,  Sound moves through air molecules on Earth. There are no air molecules for the sound waves to bounce off of in space.

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The reaction between m-cresol and sodium hydroxide will create sodium m-cresolate and water.

The structure of the organic creation (sodium m-cresolate) and the reaction is described in the attached picture.

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Answer:

3.917 x 10 ^ 23

Explanation:

You just want to use dimensional analysis to solve. So first start with 122g of copper(II) nitrite, and divide by the molecular weight to get it into moles. Then you know that 1 mole = 6.022 x 10 ^23 molecules (Avogadro's Number) so multiply that by your current moles. A hint for these problems always convert what you were given to moles since it is easy to get to a lot of things through them. ** Use the molar mass/molecular weight for going from grams to moles or moles to grams and use Avogadro's number when going from moles to atoms/molecules or reverse.

Hope this helps!

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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Answer:

1. joystick 2. scroll wheel 3. shutdown

Using MO theory, we predict that 1 and 3 (CN and CN2) are diamagnetic, while 2 (CN+) is paramagnetic. Therefore, the correct answer is a. 1 and 3 only.

Using MO theory, we can predict the magnetic properties of molecules based on the electron configuration of their molecular orbitals. Diamagnetic species have all of their electrons paired, while paramagnetic species have unpaired electrons.
For CN, we can draw the MO diagram by combining the atomic orbitals of carbon and nitrogen. The diagram shows that CN has 10 electrons in its molecular orbitals, with all of them paired. Therefore, CN is diamagnetic.
For CN+, we can remove one electron from CN and recalculate the MO diagram. The resulting diagram shows that CN+ has 9 electrons, with one unpaired electron in the highest energy molecular orbital. Therefore, CN+ is paramagnetic.
For CN2, we can combine two CN molecules and draw the MO diagram. The diagram shows that CN2 has 20 electrons in its molecular orbitals, with all of them paired. Therefore, CN2 is also diamagnetic.

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Answer:

C D

Explanation:

Among one mole carbon and one mole oxygen, one mole would contain more mass.

One mole of any quantity means that there are 6.022 x 10²³ entity of that particular quantity in that sample.

We know,

Moles = Given mass/ molar mass

Molar mass of Carbon = 12 grams/mol.

Molar mass of Oxygen = 16 grams/mol.

So, Moles of carbon is one,

we can write,

6.022 x 10²³ = mass of Carbon/molar mass of carbon

Mass of carbon = 79.56 x 10²³ grams.

Now,

Moles of oxygen is one,

we can write,

6.022 x 10²³ = mass of oxygen/molar mass of oxygen

Mass of oxygen = 106.08 x 10²³ grams.

As we can see, that the mass of the oxygen atoms is much more heavier than the carbon atoms.

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