Determine the electronegativity difference (AEN) and the type of bond formed
(ionic, polar, non-polar).
CF4

Answer:

single replacement

Explanation:

The H2 in the sulfuric acid is replaced by the solid zn to form the salt zinc sulfate, ejecting the hydrogen ions which become an h2 molecule. This is also a redox reaction as Zn is oxidized and the H+ ions are reduced.

Resultant aqueous solution of a hydrogen oxalate salt is basic in nature.

pH scale is used to determine the acidity, basicity or neutral nature of any solution.

Chemical equation for the given salt in an aqueous solution will be shown as:

NaHC₂O₄ + H₂O → NaOH + H₂C₂O₄

From the equation it is clear that reaction produces-

So that resultant solution is basic in nature.

Hence the aqueous solution of salt is basic.

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Answer:

acidic

Explanation:

The HC2O−4 ion is amphiprotic.

As an acid, it has the given Ka2 of HC2O−4 is 6.1 × 10^−5.

To find the Kb, use the relationship between Ka1 and Kb for the conjugate acid of a base.

The Kb of HC2O−4 is 1.0 × 10^−14 / 5.9 × 10^−2 ≈ 1.7 × 10^−13.

Since Ka2 > Kb, the solution is acidic.

Milk

Explanation:

because milk is very thick youknow here I go

The reason behind the use of ferrocene in the experiment is because it reacts much faster than benzene.

Ferrocene is an organometallic compound which consist of two cyclopentadienyl rings bound to a central atom of iron.

The aromatic cyclopentadienyl rings in ferrocene have a lot of electrons and go through a lot of the same reactions as benzene.

In fact, most metallocenes are more electrophilic reagent reactive than benzene, indicating that electrons are more readily available.

Thus, the reason behind the use of ferrocene in the experiment is because it reacts much faster than benzene.

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Answer:

Chemistry is like the process or art containing a very broad range of things. From experimenting to the scientific table, with science and chemistry, the possibilities are endless. Who knows, you may even be able to make a new discovery.

To do chemistry, it is about experimenting, studying, and understanding.

Ammonia undergoes combustion with oxygen to produce nitric oxide and water. The volume of the oxygen required to react with 720 ml of ammonia is 900 ml.

Volume is the area occupied by the substance and is the ratio of the mass to the density.

At STP, 1 mole of gas occupies 22.4 L of volume

Given,

Volume of ammonia reacted = 0.720 L

The combustion reaction is shown as,

[tex]\rm 4NH_{3} + 5O_{2} \rightarrow 4NO +6H_{2}O[/tex]

From the stoichiometry of the reaction, it can be said that,

[tex](4 \times 22.4)[/tex] L of ammonia reacts with [tex](5 \times 22.4)[/tex] L of oxygen gas.

So, 0.720 L of  ammonia will react with:

[tex]\dfrac{ (5 \times 22.4)}{(4 \times 22.4)} \times 0.720 = 0.9 \;\rm L[/tex]

Therefore, the volume of oxygen required is 900 mL.

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Intermolecular forces are the forces present between ions, atoms, and molecules. Dipole-dipole is the attractive force that must be overcome.

Attractive forces are the intermolecular forces present between the molecules and bind them together. Dipole-dipole forces, London dispersion forces, Hydrogen bonding, and Induced-dipole forces are types of attractive intermolecular forces.

Dipole-dipole forces are the attractive forces that are present between the positive of the polar and the negative of the nonpolar molecule. The chloroform molecule is polar and has strong dipole interaction.

Therefore, dipole-dipole forces must be overcome.

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The answer is 4.9 moles of salt will be needed to add to 1 kg of water to change the boiling point by 5 °C.

Boiling point elevation is the phenomenon that occurs when the boiling point of a liquid (a solvent) is increased when another compound is added, such that the solution has a higher boiling point than the pure solvent.

Boiling point elevation occurs whenever a non-volatile solute is added to a pure solvent.

ΔT = i * Kb * m

where m, Kb and i are the molality of solution, ebullioscopic constant and Van't Hoff factor respectively

The data given in the question is ΔT = 5 °C

mass of solvent = 1 kg

Kb = 0.51 °C/(mol/kg)

Van't Hoff Factor for NaCl is 2

Substituting the values in the above equation

[tex]\rm 5 = \rm\dfrac{2\times0.51\times moles \;of \;salt}{1}[/tex]

[tex]\rm moles \;of \;salt = \rm\dfrac{5}{2\times0.51}[/tex]

moles of salt = 4.9

Therefore 4.9 moles of salt will be needed to add to 1 kg of water to change the boiling point by 5 °C.

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Maybe this can help.

In mechanics, speed increase is the pace of progress of the speed of an article regarding time (acceleration). Speed increases are vector amounts (in that they have greatness and direction). The direction of an item's speed increase is given by the direction of the net power following up on that article. The size of an item's speed increase, as depicted by Newton's Second Law, is the consolidated impact of two causes:

the net equilibrium of all outer powers acting onto that item — size is straightforwardly relative to this net coming about force;

that article's mass, contingent upon the materials out of which it is made — extent is conversely relative to the item's mass.

There are two ways of thinking about it:

Reasons

Hope that helps!

Action and reaction forces are Newton's law of motion. The action force on the hot air balloon makes them rise.

Newton's third law or the law of action and reaction is present that allows describes the force applied to the object in opposite and equal in magnitude when the two objects interact mutually.

The action force is the force applied with a magnitude and in a direction opposite to the reaction force of the object. In the case of hot air balloon action, force is applied from down to the upper direction that allows the balloon to rise.

Therefore, the action force option D. allows the hot air balloon to rise.

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The solubility product expressions for the CuBr, ZnC₂O₄ and Ag₂CrO₄ will be represented as [Cu⁺][Br⁻], [Zn²⁺][C₂O₄²⁻] and [Ag⁺]²[CrO₄²⁻] respectively.

The solubility product expression or constant is denoted by Ksp​, and it is the equilibrium constant for a solid substance dissolving in an aqueous solution.

Hence balanced equations with solubility product expressions will be shown above.

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Answer:

The histosols of peat pogs are soils rich in organic material but poor in mineral nutrients, and are not fertile. Conversely, aridosols (desert soils) have an abundance of mineral nutrients but a dearth of organic matter and are also not fertile.

hope i help✨!

Answer:

615.13 ml

Explanation:

P1 V1 = P2 V2

1100  * 425  = 760 * V2

V2 = 615.13 ml

According to the information in the graph, it can be inferred that the amount of solute that will precipitate out of solution at 20°C is 130 grams.

To calculate the amount of solute that precipitates out of solution we must identify the solute data at 80°C and 20°C and identify the difference as shown below:

According to the above, the amount of solute that will precipitate out of solution due to the change in temperature is 130 grams of KNO3.

Note: This question is incomplete because the graph is missing. Here is the graph

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Answer:

noble gases: 18

alkali earth: 2

alkali: 1

halogens: 17

Amino acids are categorized by their chemical properties on the basis of the sequence of side chain (R group).

Amino acids are known as the 'building blocks of the life' as they help in the formation of proteins inside the body.

Side chain of amino acids is specific in nature and are known by the name of R group, these R groups are attached with the alpha carbon atom. R groups characterizes below properties of the molecule:

Hence R group describes the chemical properties of amino acids.

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The moles of aluminum sulfate that could be produced from 32.7 grams of aluminum nitrate is 0.07 moles.

Relation between the mass and moles of any substance will be represented as:

n = W/M, where

W = given mass of aluminum nitrate = 32.7g

M = molar mass of aluminum nitrate = 213 g/mol

Moles of aluminum nitrate = 32.7 / 213 = 0.154 mol

Given chemical reaction is:

3Na₂SO₄(aq) + 2Al(NO₃)₃(aq) → Al₂(SO₄)₃(s) + 6NaNO₃(aq)

From the stoichiometry of the reaction it s clear that,

2 mole of Al(NO₃)₃ = produces 1 mole of Al₂(SO₄)₃

0.154 mole of Al(NO₃)₃ = produces (1/2)(0.154)=0.07 mole of Al₂(SO₄)₃

Hence produced moles of aluminum sulfate is 0.07 moles.

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Nuclear fusion involves the combination of two light nuclei to form a heavier nucleus with emission of energy.

A nuclear reaction equation is a representation of the change that takes place as one nucleus is converted to another. A nuclear transformation could be any of the following;

We can know that a nuclear fusion is taking place when two nuclei come together to form a larger nucleus and emit energy. I would identify a nuclear fusion when;

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Answer:

No it doesn't satisfy the Law of Conservation of Mass.

Explanation:

A balanced chemical equation obeys the law of conservation of mass.

Para preparar una disolución de concentración 5% v/v de ácido clorhídrico se debe usar 96 ml de HCl (0.5 M) por cada dos litros de agua.

El porcentaje volumen a volumen (v/v) depende del volumen de soluto, en este caso HCl, y de solvente, en este caso, agua.

La masa molar de HCl es 36,4 gramos (g) por cada mol, lo cual indica  que 1 mol de HCl representan 36,4 g.

En conclusión, para preparar una disolución de concentración 5% v/v de ácido clorhídrico se debe usar 96 ml de HCl (0.5 M) por cada dos litros de agua.

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Answer:

M has lost an electron, one electron, and given it to Mt

Explanation:

Answer:  -Ionic bonds form when one atom provides electrons to another atom. Covalent Bonds: Covalent bonds form when two atom shares their valence electrons. Metallic Bonds: Metallic bonds form when a variable number of atoms share a variable number of electrons in a metal lattice.

-Covalent Bonds.

Covalent Compounds. Contain no metals and no ions. Covalent compounds contain nonmetals only.

Example:

Ionic Compounds. A metal with a non-metal. Doesn't use prefixes for naming. Name the metal and change the nonmetal ending to -ide.

Explanation: Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

The number of ions of ammonium are 6.48e + 22.

The mole is a SI unit of measurement that is used to calculate the quantity of any substance.

You have 0.07 mols (NH4)2SO4.

There are [tex]6.022 \times 10^2^3[/tex] present in one mole of (NH₄)₂SO₄, so for 0.054 moles, there will be

[tex]6.022 \times 10^2^3 \times 0.054 = 3.24 \times 10^2^2[/tex]

Since there are two ammonium in 1 molecule of ammonium sulfate, there will be twice ions present in an ammonium sulfate molecule.

[tex]3.24 \times 10^2^2 \times 2 = 6.48e +22[/tex]

Thus, the number of ions are 6.48e + 22.

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Answer:

50.228L of H2.

The mass of a present which has a density of 2.15 kg/L and volume of 3650 mL is 7.74 kg.

Mass of any substance will be calculate by using the density and volume by using the below equation as:

Density = Mass / Volume

Given that,

Density of Christmas present = 2.15 kg/L

Volume of present = 3,650 mL = 3.6L

On putting values, we get

Mass = (2.15)(3.6) = 7.74

Hence required mass of Christmas present is 7.74 kg.

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Answer:

A

Explanation:

just took the test

The following statements is not true for Coulomb's law is:

A. The force will decrease if the distance is decreased.

Coulomb's law describes the electrostatic force between two point charges. The law states that the force between two charges is directly proportional to the product of their magnitudes and inversely proportional to the square of the distance between them.

Mathematically, Coulomb's law is expressed as:

F = k * (|q1| * |q2|) / r²

Where:

F is the electrostatic force between the two charges q1 and q2.

k is Coulomb's constant, a proportionality constant with a value of approximately 8.99 x 10⁹ N m²/C² in a vacuum.

|q1| and |q2| are the magnitudes (absolute values) of the two charges.

r is the distance between the two charges.

Now let's analyze statement A:

A. The force will decrease if the distance is decreased.

This statement is incorrect. According to Coulomb's law, as the distance (r) between the two charges decreases, the force (F) between them increases. The force is inversely proportional to the square of the distance (r²). As the distance becomes smaller, the denominator of the Coulomb's law expression (r²) decreases, causing the force to increase.

Conversely, if the distance between the charges increases, the force between them decreases. The force decreases with the square of the distance.

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The chemical reaction shows the change that took place in the reaction. The number of moles of LiOH reacted is 1.16 moles.

The term chemical reaction has to do with the combination of two substances to yiled a new one that is different from each of the reactants. From this reaction; [tex]CO2 + 2LiOH ----- > Li2CO3 + H2O[/tex].

Number of moles of CO2 = 25.5 g/44 g/mol = 0.58 moles

Since 1 mole of CO2 reacts with 2 moles of LiOH

0.58 moles reacts with  0.58 moles * 2 moles/ 1 mole

= 1.16 moles

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Answer:

C

Explanation: