How many carbon atoms are in the following compound: Barium Carbonate?

"London dispersion forces or simply dispersion forces are the weakest intermolecular force.  It is an attractive force that arises from surrounding temporary dipole moments in nonpolar molecules or species.  These temporary dipole moments arise when there are instantaneous deviations in the electron clouds of the nonpolar species. Surrounding molecules are influenced by these temporary dipole moments and a chain reaction results in which subsequent weak; dipole-induced dipole interactions are created: These cumulative dipole-induced dipole interactions create the attractive dispersion forces. Dispersion forces are the forces that make nonpolar substances condense to liquids and freeze into solids as temperatures decrease".

London dispersion forces, also known as dispersion forces, are the weakest of the intermolecular forces. They are an attractive force that arises between all types of molecules, including nonpolar molecules, as a result of temporary fluctuations in the electron distribution. These fluctuations lead to the creation of temporary dipoles in the molecule, which then interact with neighboring molecules and produce an attractive force. The strength of the London dispersion forces increases as the size of the molecule increases, and as a result, they play a significant role in determining the properties of many materials, such as the boiling and melting points of nonpolar substances.

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The correct statement from the given option is as follows : Check and see if anyone else can use the chemical. If not, discard in the proper waste container.

A student removes the chemical sample from the reagent bottle to used in an experiment. He should do with any excess chemical that is remaining from that sample after the experiment is complete is he should Check and see if anyone else can use the chemical. If not, discard in the proper waste container.

The remaining chemical can not return to the bottle because , if the student return the this leftover sample, than it can contaminate the entire sample store in the container.

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Option C: According to the passage, base-catalyzed triglyceride (ester) cleavage occurs. NaCl and Na2SO4 are salted, while HCl is an acid. Only NaOH is a base that can catalyze ester saponification.

In chemistry, an ester is a compound derived from an acid (organic or inorganic) in which at least one acidic hydrogen atom of that acid (H) is replaced by an organyl group (R). A carboxylic acid and alcohol substitution reaction is an example of ester formation. Glycerides are fatty acid esters of glycerol; they are important in biology because they are one of the main classes of lipids and make up the majority of animal fats and vegetable oils. Esters can be formed from oxoacids (for example, acetic acid, orthocarbonic acid, sulfuric acid, perchloric acid, nitric acid, and xanthic acid esters), but also from acids that do not contain oxygen (e.g. esters of thiocyanic acid, hydrogen chloride, trithiocarbonic acid, tricyanomethane).

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If an electron emits 3 eV of energy, what is the corresponding wavelength of the emitted photon will be 4.12 × 10 ^-7.

The distance between corresponding points (adjacent crests) in adjoining cycles of such a waveform signal carried in space or along a wire is defined as the wavelength. This length is typically defined in wireless communication systems as meters (m), centimeters (cm), or millimetres (mm) (mm).

E = hc/ wavelength...(i)

It is given that,

E = ev

h = 6.626 x 10-34 J x s

Putting the values of given data in above equation.

Wavelength = hc/E

Wavelength = 6.626 x 10-34 J x s ×3× 10^8  /3 ×1 .60 x 10-19 J,

Wavelength = 19.8 × 10^-26 /4.8 x 10-19 J

Wavelength = 4.12 × 10 ^-7.

Therefore, the wavelength will be 4.12 × 10 ^-7.

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Considering the definition of equilibrium constant, the equilibrium molar the symbolic expression for the equilibrium constant is  ([tex][CO_{2} ]^{4}[/tex]×[tex][H_{2} O]^{6}[/tex])÷ ([tex][C_{2}H_{6} ]^{2}[/tex]×[tex][O_{2} ]^{7}[/tex])

Equilibrium is a state of a reactant system in which no changes are observed as time passes, despite the fact that the substances present continue to react with each other.

The concentration of reactants and products at equilibrium is related by the equilibrium constant Kc. Its value in a chemical reaction depends on the temperature and the expression of a reaction aA + bB ⇄ cC + dD is

Kc= ([tex][C]^{c}[/tex]×[tex][D]^{d}[/tex])÷ ([tex][A]^{a}[/tex]×[tex][B]^{b}[/tex])

That is, the constant Kc is equal to the multiplication of the concentrations of the products raised to their stoichiometric coefficients by the multiplication of the concentrations of the reactants also raised to their stoichiometric coefficients.

The balanced reaction is:

2 C₂H₆(g) + 7 O₂(g) ⇆ 4 CO₂(g) + 6 H₂O(g)

The constant Kc can be expressed as:

Kc= ([tex][CO_{2} ]^{4}[/tex]×[tex][H_{2} O]^{6}[/tex])÷ ([tex][C_{2}H_{6} ]^{2}[/tex]×[tex][O_{2} ]^{7}[/tex])

Finally, the equilibrium molar concentration is  ([tex][CO_{2} ]^{4}[/tex]×[tex][H_{2} O]^{6}[/tex])÷ ([tex][C_{2}H_{6} ]^{2}[/tex]×[tex][O_{2} ]^{7}[/tex])

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The density of the cake in grams/cm3 if it is in a 9.0 X 13 inch pan and in an inch tall and weighs 3.4 pounds is 5.189g/cm³.

This is a term which is referred to as the mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume.

The mass is 3.4 pounds which must be converted to grams. One pound is equal to 453.592 grams therefore  3.4pound = 3.4 pounds × 453.592 = 1542.2g.

9.0 X 13 inch pan and in an inch tall  therefore the volume is 117inch³ when converted to cm will be  117inch³ × 2.54 = 297.18cm³ .

Density = mass/volume

      = 1542.2g / 297.18cm³  = 5.189g/cm³.

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The statements that correctly describe the mechanism of the reduction of acid chlorides and esters with a metal-hydride reducing agent.

Reduction is a reaction in which the oxidation number decreases and electrons gain. It can be said that reduction is a reaction in which a substance loses oxygen.

Oxidation is a reaction that has an increase in oxidation number and a decrease in electrons. It can be said that oxidation is a reaction in which a substance binds oxygen.

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The forces that act on the parachute are;

We know that force is a vector, as such, the direction of the force ie very important. We ought to know that the force that acts on the parachute is such that would be able to lower its speed.

There are three forces that are acting on the parachute and they are;

1) Weight of the parachute

2) Upthrust on the parachute

3) Drag force on the parachute

The first and last forces reduces the speed of the parachute.

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i = moles of solute in solution/moles of solute dissolved.

where i is called the van't hoff factor.

In a solution, solute ion association results in values less than 1.

In a solution, solute particles that interact together produce values greater than 1.

The ratio of the final moles after dissociation or association to the initial moles before to dissociation or association of an electrolyte in a solution is known as the Van't Hoff factor. The number of particles in the solute is a characteristic that is independent to the concentration of the solution.

The Van't Hoff factor illustrates how solutes affect the colligative properties of the solution. The Van't Hoff factor, which is produced when a substance is combined with its mass concentration, is the concentration ratio of the resulting particles.

The Van't Hoff factor's application in indicating the colligative properties is a significant attribute.

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The relationship between moles of a solute dissolved and the moles of solute is expressed as the van't hoff factor, i where i = 1 + α(n – 1)

Van’t Hoff factor is defined as the the number of moles of particles formed in solution per mole of solute. It is the property of the solute and expressed as "i". It does not depend on concentration for an ideal solution. The van’t Hoff factor of a real solution may be lower than the calculated value for a real solution. At high concentration values or when the solute ions associate with one another. The van’t Hoff factor is a positive number. It is not always an integer value. It is equal to 1 for a solute that does not dissociate into ions. It is greater than 1 for most salts and acids and less than 1 for solutes that form associations when dissolved.

Where, i = 1 + α(n – 1)

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BaSO4 is an ionic compound as it contains SO4 polyatomic ions in it.

Basically BaSO4 molecule does not have its own original shape as it is only an ionic compound and there is no bonding between Ba and SO4 ions, there is just sharing of electrons within the molecule.

Thus BaSO4 lewis structure does not have any shape.

What is the Lewis structure?

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Disposable gloves are ones that you use only once and then discard. They can safeguard both the individual you're caring for and your health.

They aid in preventing the transfer of disease and germs to both you and the other person.

When handling bodily fluids such as saliva, blood, urine, or stool from a loved one, use gloves. And when washing a loved one, some individuals wear gloves. Additionally, gloves can be worn when administering immunizations and applying medications to the skin.

Gloves won't stop you from sticking something sharp into your flesh. Body fluids can spread illness, therefore gloves can assist. However, if there are instances when you decide against using gloves or don't have any, keep your hands as sanitized as you can.

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Answer:

- Changing frequently, especially between tasks

- Hand washing each time you remove your gloves

- Using each pair just once

The volume of the tank that holds 52.9cm³ of water in cubic inches is 3.23 in³.

Volume refers to a three-dimensional measure of space that comprises a length, a width and a height.

Volume is measured in units of cubic centimeters in metric, cubic inches or cubic feet in English measurement.

According to this question, a tank holds 52.9cm³ of water. This volume can be converted to cubic inches as follows:

1 cubic centimetre (cm³) = 0.061 cubic inch (in³)

Hence, 3.23 in³ is the volume in cubic inches.

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Option d, The partial pressure of the water vapor at equilibrium is 8 atm.

Ammonium nitrate (NH4NO2) is placed in a 6 atm vacuum flask and heated in this reaction. The total pressure when everything is in equilibrium is 14 atmospheres. Using the information in the problem statement and the ideal gas law, we can determine the partial pressure of water vapor at equilibrium.

We know the reactants (NH4NO2), the products (N2 and H2O), and the total equilibrium pressure, which is 14 atm. Therefore, using the mole fractions of each gas, we can calculate the partial pressure of each gas at equilibrium.

From the balanced chemical equation:

NH4NO2 (g) -> N2 (g) + 2 H2O(g)

The mole ratio of NH4NO2:N2:H2O = 1:1:2

So the mole fraction of N2 = 1/4 and the mole fraction of H2O = 2/4 = 0.5

From the ideal gas law PV = nRT, and knowing the total pressure, we can find the partial pressure of each gas:

Partial pressure of N2 = (mole fraction of N2)(total pressure) = (1/4)(14 atm) = 3.5 atm

Partial pressure of H2O = (mole fraction of H2O)(total pressure) = (0.5)(16 atm) = 8 atm.

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Refer to the figure showing the structure of methyl acetate. why this compound can form hydrogen bonds with water but not with itself because This compound lacks a hydrogen atom in a highly polar bond.

Methyl acetate, also known as MeOAc, acetic acid methyl ester or methyl ethanoate, is a carboxylate ester with the formula CH3COOCH3. It is a flammable liquid with a characteristically pleasant smell reminiscent of some glues and nail polish removers. Methyl acetate is occasionally used as a solvent, being weakly polar and lipophilic, but its close relative ethyl acetate is a more common solvent being less toxic and less soluble in water. Methyl acetate has a solubility of 25% in water at room temperature. At elevated temperature its solubility in water is much higher. Methyl acetate is not stable in the presence of strong aqueous bases or aqueous acids. Methyl acetate is not considered a VOC in the USA.

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Photochemical smog forms when (B) volatile organic compounds and oxides of nitrogen are trapped by a thermal inversion and ozone, nitrogen dioxide, and PAN.

When sunlight interacts with nitrogen oxides and volatile organic compounds (VOCs), a mixture of pollutants known as photochemical smog is produced. This results in the formation of a brown haze that hangs over urban areas. Since there is more sunshine in the summer, this phenomenon tends to happen more frequently during that time of year. Primary sources of pollution.

When sunlight interacts with nitrogen oxides and volatile organic compounds (VOCs), a mixture of pollutants known as photochemical smog is produced. This results in the formation of a brown haze that hangs over urban areas.

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Answer:

B. The release of carbon dioxide into the air during the burning of the rain forests adds to the greenhouse effect.

The destruction of rainforests has a negative impact on the environment, one of which is the release of carbon dioxide into the air during the burning of the rainforests, contributing to the greenhouse effect, which leads to global warming, and climate change. This is a significant negative effect of the destruction of the rainforests.

Answer: Ok here you go....

Explanation:

Core:
Semi-solid
Composed of two parts
Create Earth's magnetic field
More Dense
Mostly metallic

Both:
Increased pressure with depth
Increased temperature with depth

Mantle:
Less Dense
Made of rock
Thickest layer of Earth


Pretty sure solid and liquid is the core but I'm not certain.

Answer:

-4

Explanation:

The charge of the bottle of plasma would be -4, because 100 negatively charged ions (-) have a total charge of -100, and 96 positively charged ions (+) have a total charge of 96. When you subtract -100 from 96, you get -4.

By encircling an iron core with wire, an electromagnet can be created. The required magnetic field is increased when the core is constructed of a ferromagnetic material like iron.

By running electricity through the wire that is twisted around an iron core, a transient magnet is created.

Ferromagnetic materials are those that, even in the absence of an external magnetic field, exhibit spontaneous net magnetization at the atomic level.

The area where the force of magnetism acts around a magnetic material or a moving electric charge is known as the magnetic field, which is a vector.

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500 mL of water contain 1.00 moles of sodium carbonate. As opposed to moles per 500 mL, moles per liter is a more practical way to represent concentration.

Example:

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When compared to the carbon cycle, the nitrogen cycle has a longer residence time in its reservoirs. Nitrogen gas accounts for 78% of the Earth's atmosphere.

yet it is not commonly available in plant-usable forms. Nitrogen must first be transformed into a useable form, such as ammonia or nitrate, through the nitrogen fixation process. This process can occur naturally, such as by lightning or bacterial activity, or through human activities, such as fertilizer application. Nitrogen, once useful, may be taken up by plants and animals and eventually returned to the atmosphere via denitrification. Because the entire process might take decades to millennia, the nitrogen cycle is substantially slower than the carbon cycle. The polypeptide is a kind of protein. The The peptide bond also permits the polypeptide to be flexible, which is essential for its operation.The initial amino acid in a peptide is known as the N-terminal (NH2) residue, while the last amino acid is known as the C-termina.

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The conclusion that can be drawn about lupus is that: Lupus can affect almost every system of the body. Option D. is the correct answer.

What is Lupus (SLE)?

This refers to a disease that happens when your body's immune system attacks your own tissues and organs (autoimmune disease).

Lupus (SLE) can affect the following body parts: joints, skin, kidneys, blood cells, brain, heart and lungs.

Symptoms differ from person to person but can include fatigue, joint pain, rash and fever. These can get worse from time to time (flare up) and then improve.

Lupus has no cure. Current treatments are based on improving quality of life by controlling symptoms and minimizing flare-ups. This starts with lifestyle modifications, including sun protection and diet. Also, disease management includes medication such as anti-inflammatories and steroids.

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The incorrect statement about the number of electrons that is lost or gained by a representative element during the ion formation is E) no correct response .

The correct statements are given as :

A) The number is usually 3 or less. This statement is true about the number of electrons that is lost or gained by a representative element during the ion formation.

B) The number is governed by the octet rule. This statement is true.

C) The number is related to the position of the element in the periodic table. This statement is true about the number of electrons that is lost or gained by a representative element during the ion formation

This question is incomplete, the complete question is :

Which of the following is an incorrect statement about the number of electrons lost or gained by a representative element during ion formation?

A) The number is usually 3 or less.

B) The number is governed by the octet rule.

C) The number is related to the position of the element in the periodic table.

D) more than one correct response

E) no correct response

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Answer:

In Explanation

Explanation:

An ionic compound that contains a polyatomic ion is a chemical compound made up of two or more ions that are held together by ionic bonds. Ionic bonds form when one or more electrons are transferred from one atom to another, creating ions with a positive or negative charge. In the case of an ionic compound that contains a polyatomic ion, the compound will contain at least one ion made up of more than one atom. These ions are called polyatomic ions and they have a net electrical charge. The ionic compound will be held together by the electrostatic attraction between the positive and negative ions.

The balanced equation for this reaction is:

CH4 + 2O2 -> CO2 + 2H2O

This equation is balanced because each element has the same number of atoms on both sides of the equation. According to the rate expression, the concentrations of O2, H2O, and CO2 are all inversely correlated with the concentration of CH4. This implies that O2, H2O, and CO2 concentrations increase as CH4 concentrations fall. According to the coefficient of 1/2 in front of O2 and H2O, the reaction is happening at a 2:1 ratio, which means that for every CH4 molecule that reacts, 2 molecules of O2 and 2 molecules of H2O are created. The absence of the CO2 coefficient in the rate expression indicates that the concentration of CO2 is directly proportional to the change in concentration of CH4.

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56g of nitrogen gas has 4 moles of the nitrogen atom.

N2 has a molar mass of 28.014 g/mol.

n = m/M,

where m = molar mass in g/mol,

n = moles, and

m = mass in grams.

M is a fraction, thus you can divide it by multiplying by the reciprocal of that fraction.

To one significant figure, n = 1 g N2 (1 mol N2/28.014 g N2) = 0.04 mol N2.

Two nitrogen atoms are securely linked together to form the chemical molecule known as molecular nitrogen (N2).

At normal temperatures and pressures, molecular nitrogen is a colorless, odorless, tasteless, and inert gas.

Given is the expression for the number of moles formula.

The formula for moles is.

Mass of material / Mass of one mole equals the number of moles.

95 / 86.94 equals the number of moles.

In response to the query:

56g is the mass of nitrogen gas.

Nitrogen has a molecular weight of 14.

Mass / molecular mass Equals number of moles.

= 56/14.

= 4 moles.

Therefore, 56g of nitrogen gas has 4 moles of the nitrogen atom.

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The number of molecules in 1.71  moles of magnesium oxide is 0.56.02310 23 =3.011510 23.

Avogadro's number (6.022140857 1023) states that all substances have exactly the same number of molecules in a mole.

Determine the substance's molecular weight for one mole in order to calculate the necessary number of molecules. Next, divide the molar mass value by the molecular mass, and multiply the result by the Avogadro constant.

17.4 mol Mn2(Cr2O7)3 to g

6.11 mol SF6 to L at STP

=1L -7.466L⟶

Avogadro calculated that a mole of magnesium oxide comprises 6.023 x 6.11 molecules.

The number of molecules in 1.71  moles of magnesium oxide is 0.56.02310 23 =3.011510 23.

The complete question is Calculate the number of molecules6.11 mol SF6 to L at STP

2. 16 mol bromine monochloride to L at STP

3. 30.3 g magnesium oxide to mol

4. 17.4 mol Mn2(Cr2O7)3 to g

5. 1.71 mol Cr2(SO4)3

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The following compound contains protons and carbons that are not electronically equivalent. Proton types 6 and carbon types 6.

A proton is a stable subatomic particle with a positive charge equal to one electron charge and a rest mass of 1.67262 1027 kg, or 1,836 times the mass of an electron.

Except for the hydrogen nucleus, all atomic nuclei are composed of protons and neutrons, which are electrically neutral particles. Every chemical element's nucleus contains the same number of protons. This number specifies an element's atomic number and determines its position in the periodic table. An atom is electrically neutral when the number of protons in its nucleus equals the number of electrons orbiting it.

The proton was discovered during the early stages of atomic structure research.

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When a chemical system is in equilibrium, it signifies that the forward and reverse reactions are occurring at the same pace. This implies that the concentration of reactants and products.

remains constant over time. The equilibrium constant (Kc) is the ratio of the concentration of products to their stoichiometric coefficients at equilibrium to the concentration of reactants to their stoichiometric coefficients. It is a constant measure of the relative intensity of forward and reverse reactions at a particular temperature and pressure. At equilibrium, the forward reaction rate equals the reverse reaction rate, ensuring that the concentration of reactants and products stays constant. when a system is at equilibrium, the reaction enter the correct word or phrase: is equal the equilibrium constant. The system is said to be in this state.The forward and reverse reflexes are continuously balanced in a condition of dynamic equilibrium.

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Change in temperature when quicklime reacts with water.

When ice cubes are separated from the freezer and conducted to room temperature, they turn into a liquid. This temperature is the boiling point of water. Heat makes water molecules move fast. Cooling air causes water vapor to change to a liquid. Water changes rapidly into a gas when water is heated to a temperature of 100 degrees Celsius or 212 degrees Fahrenheit.

When energy is free in an exothermic reaction, the temperature of the reaction mixture increases. When energy is soal up in an endothermic reaction, the temperature decreases.

So we can conclude that Some chemical reactions are distinguished by changes in temperature.

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