Which of these af3 molecules will have a nonzero dipole moment?.

Answer:

Where is the data table?

The product of a chemical reaction is what is remaining at the end of the reaction. The combination between reactant to form products can happen in a variety of ways including combination of ions in a solution to form new compounds

The correct compounds representing the variables and the net ionic equations are as follows:

a) A = NaCl

B = H₂O

Balanced net ionic equation: OH⁻(aq) + H⁺(aq) → H₂O (l)

ΔHrxn = Negative

b) C = NH₃

D = NaCl(aq)

E = H₂O(l)

Balanced net ionic equation: OH⁻(aq) + NH₄⁺(aq) → NH₃(aq) + H₂O(l)

ΔHrxn = Negative

c) F = NH₄Cl(aq)

Balanced net ionic equation: H⁺(aq) + NH₃(aq) → NH₄⁺(aq)

ΔHrxn = Negative

The reason the above values are correct are as follows:

a) Part (i)

The given chemical equation is

NaOH(aq) + HCl(aq) → A(aq) + B(l)

The chemical equation is the reaction between sodium hydroxide NaOH (aq) and hydrochloric acid HCl (aq), the product of the reaction is sodium chloride and water as follows;

NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l) + Heat

Therefore, we have;

A = NaCl, and B = H₂O

Part (ii)

The ionic equation is given as follows;

Na⁺(aq) + OH⁻(aq) + H⁺(aq) + Cl⁻(aq) → Na⁺(aq) + Cl⁻(aq) + H₂O (l)

Given that Na⁺(aq) and Cl⁻(aq) are spectator ions in the reaction, we have the balanced net ionic equation given as follows;

Balanced net ionic equation: OH⁻(aq) + H⁺(aq) → H₂O (l)

Part (iii)

ΔHrxn = Negative

b) Part (i)

The given chemical equation is NaOH(aq) + NH₄Cl(aq) → C(aq) + D(aq) + E(l)

The given reaction is between sodium hydroxide, NaOH(aq) and ammonium chloride, NH₄Cl(aq) and the products of the reaction are dissolved ammonia NH₃(aq), sodium chloride NaCl(aq), and water H₂O(l)

Therefore, we have;

NaOH(aq) + NH₄Cl(aq) → NH₃(aq) + NaCl (aq) + H₂O(l) + Heat

Therefore;

C = NH₃, D = NaCl(aq), E = H₂O(l)

Part (ii)

The ionic equation for the reaction is given as follows;

Na⁺(aq) + OH⁻(aq) + NH₄⁺(aq) + Cl⁻(aq) → NH₃(aq) + Na⁺(aq) + Cl⁻(aq) + H₂O(l)

The Na⁺(aq) and Cl⁻(aq) occur in both the reactants and products, therefore, they cancel out as spectator ions and we have;

Balanced net ionic equation: OH⁻(aq) + NH₄⁺(aq) → NH₃(aq) + H₂O(l)

Part (iii)

ΔHrxn = Negative

c) Part (i)

HCl(aq) + NH₃(aq) → F(l)

The given reaction is between hydrochloric acid and aqueous ammonia which has the product as ammonium chloride, NH₄Cl

Therefore, the reaction is given as follows;

HCl(aq) + NH₃(aq) → NH₄Cl(aq) + Heat

∴ F = NH₄Cl(aq)

Part (ii)

The ionic equation is given as follows;

H⁺(aq) + Cl⁻(aq) + NH₃(aq) → NH₄⁺(aq) + Cl⁻(aq)

Therefore, the chlorine ion Cl⁻(aq) occurs in both the reactant and product and can therefore, can be canceled out, and we have;

Balanced net ionic equation: H⁺(aq) + NH₃(aq) → NH₄⁺(aq)

Part (iii)

ΔHrxn = Negative

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Answer:

B.

Explanation:

The order of increasing intermolecular force strength is solid iodine < chlorine gas < liquid bromine. The correct option is option B.

The total force between two nearby molecules is known as the intermolecular force. A molecule's neighbors and any possible solute are affected by the forces created by the kinetic energy of its atoms and the small negative and positive electrical charges on various sections of the molecule.

The London dispersion forces, the dipole-dipole interaction, and the ion-dipole interaction are the three basic types of intermolecular forces. As a kind of dipole-dipole interaction, hydrogen bonding adds to the overall intermolecular force.  The order of increasing intermolecular force strength is solid iodine < chlorine gas < liquid bromine.

Therefore, the order of increasing intermolecular force strength is solid iodine < chlorine gas < liquid bromine. The correct option is option B.

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When molecules move down their concentration gradient, they move from where they are blank to where they are higher, lower.

Molecules are the smallest unit of a substance that still retains the chemical and physical properties of the original material. A molecule is made up of two or more atoms that are held together by chemical bonds. Molecules can be composed of any combination of elements, such as carbon, hydrogen, oxygen, nitrogen, and others. Molecules can be both simple, with just two atoms, or complex, with thousands of atoms forming a single molecule. Molecules can be found in everything from the air we breathe to the food we eat. Molecules are the building blocks of life, and understanding the structure and properties of molecules helps scientists gain insight into the natural world.

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Answer:

TRUE

Explanation:

Answer: 526 grams of Ag3PO4.

Explanation:

First, we need to calculate the number of moles of Silver Nitrate (AgNO3) present in 245 grams:

245 g AgNO3 / 169.88 g/mol AgNO3 = 1.444 mol AgNO3

The balanced chemical equation for the reaction between AgNO3 and Ag3PO4 is:

3 AgNO3 + Ag3PO4 → 3 Ag3PO4 + NO3

We can see that for every 3 moles of AgNO3 reacted, we get 1 mole of Ag3PO4 produced. Therefore, the number of moles of Ag3PO4 produced is:

1.444 mol AgNO3 / 3 mol AgNO3 per 1 mol Ag3PO4 = 0.481 mol Ag3PO4

Finally, we can use the molar mass of Ag3PO4 to convert from moles to grams:

0.481 mol Ag3PO4 × 418.58 g/mol Ag3PO4 = 201.18 g Ag3PO4

Therefore, 245 grams of AgNO3 will produce 201.18 grams of Ag3PO4.

Answer:

wwwwwwwwww

Explanation:

Answer:

Here's what I get  

Explanation:

(i) Voltaic cell

A voltaic cell is a device that uses a chemical reaction to produce electrical energy.

(ii) Overall Cell Potential

The standard reduction potentials for the half-reactions are

                               ℰ°/V

Cu²⁺ + 2e⁻ ⇌ Cu    0.34

Zn²⁺ + 2e⁻ ⇌ Zn   -0.76

The half-reaction with the more positive potential is the reduction half-reaction. It is the reaction that occurs at the cathode.

The half-reaction with the more negative potential is the oxidation half-reaction. It is the  reaction that occurs at the anode.

We reverse that half-reaction and subtract the voltages to get the cell reaction.

                                                          ℰ°/V

Cathode:  Cu²⁺ + 2e⁻ ⇌ Cu              0.34

Anode:     Zn ⇌ Zn²⁺ + 2e⁻              -0.76

Cell:          Zn +  Cu²⁺ ⇌ Zn²⁺ + Cu    1.10

\(\mathcal{E}_{\text{cell}}^{\circ} = \mathcal{E}_{\text{cat}}^{\circ} - \mathcal{E}_{\text{an}}^{\circ} = \text{0.34 V} - \text{(-0.76 V)} = \text{0.34 V} + \text{0.76 V} = \textbf{1.10 V}\)

(iii) Diagram

The specific labels will depend on your textbook.

They are often as follows.

a. Electron flow

b. Voltmeter or lightbulb

c. Electron flow

d. Cathode or Cu

e. Cu²⁺(aq) and NO₃⁻(aq)

f. Salt bridge

g. Zn²⁺(aq) and NO₃⁻(aq)

h. Anode or Zn

The salt bridge enables ions to flow in the internal circuit and to maintain electrical neutrality in the two compartments.

It often consists of a saturated solution of KCl.

As Zn²⁺ ions form in the anode compartment, Cl⁻ ions move in to provide partners for them.

As Cu²⁺ ions are removed from the cathode compartment, K⁺ ions move in to replace them.

Answer:a. Electron flow

b. Voltmeter or lightbulb

c. Electron flow

d. Cathode or Cu

e. Cu²⁺(aq) and NO₃⁻(aq)

f. Salt bridge

g. Zn²⁺(aq) and NO₃⁻(aq)

h. Anode or Zn

Explanation:

The conversion of solar energy into the chemical energy of a carbohydrate occurs during the process of photosynthesis.

Certain organisms convert solar energy (sunlight) into chemical energy through photosynthesis, which is then used to construct carbohydrate molecules. When an organism breaks down food, the energy that was used to keep these molecules together is released.

The energy generated by photosynthesis continuously enters the planet's ecosystems and is transferred from one organism to another. As a result, the majority of the energy that all living things on Earth require comes from the process of photosynthesis, either directly or indirectly.

Oxygen is also released into the atmosphere as a result of photosynthesis. To summarize, humans rely almost entirely on photosynthesis-producing organisms for food and oxygen.

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Answer:

8.0 g

Explanation:

To convert moles to grams, you need to use the molar mass.  The molar mass of sulfur is 32.06.  The molar mass is the atomic mass of the atom.

(0.25 mol) × (32.06 g/mol) = 8.015 g

Round for significant figures.

8.015 g ≈ 8.0 g

Claim: The ability of a crane to pick up and release pieces of metal is due to the principles of electromagnetism.

Evidence:

Reasoning:

Therefore, the principles of electromagnetism are responsible for the crane's ability to pick up and release pieces of metal.

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Explanation:

Using the formula ΔTb = Kb x molality, where ΔTb is the change in boiling point, we can solve for it and add it to the boiling point of pure water to find the boiling point of the KCl solution.

ΔTb = Kb x molality

ΔTb = 0.512 °C/m x 0.74 molal

ΔTb = 0.37968 °C

Boiling point of KCl solution = 100.00 °C + 0.37968 °C

Boiling point of KCl solution = 100.38 °C

Therefore, the boiling point of the KCl solution is 100.38 °C.

Answer:

The answer is OXIDATION REACTION.

Answer:

There's no other metal.

Explanation:

Iron reacts only with water and air to get the object rusted. There is no other metal which reacts with iron to get the object rusted.

However,

Zinc can be used to protect Metal from Rusting.

Answer:

Protons / H+ ions

Explanation:

The acids are compounds with a pH range between 1-7, while the base has a pH range of 7-14. Acids produce hydrogen ions or protons in the solution.

The pH can be defined as the hydrogen ion concentration in the solution. The higher the proton concentration in the solution, the lower will be the pH.

The pH of 7 has an equal number of hydrogen and hydroxide ions contributing to the neutral pH. The alkaline pH is contributed by the hydroxide ion concentration.

The acids fall at the lower pH range with a high hydrogen ion concentration. Thus, acids produce hydrogen ions or protons in the aqueous solution.

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The calculated maximum wavelength is 495 nm

The energy needed to break a bond and create two atomic or molecular fragments, each containing one of the original shared pair of electrons, is known as the bond dissociation energy. The link between silicon and fluorine, which was previously discussed, is discovered to be the strongest chemical bond. The initial silicon-fluorine bond in a silicon tetrafluoride molecule requires 166 kcal/mol of bond dissociation energy to be broken.

ΔH=+240 kJ/mol

E=242×103/6.022×1023

=4.0186×10−19 J

Now I use the Planck Expression:

E=hf=hc/λ

∴λ=hc

Eλ=6.63×10−34×3×108/4.0186×10-19 m

λ=4.949×10−7 m

λ=495 nm.

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The elements with the strongest nonmetallic properties are located in the upper right side of the periodic table.

A non-metallic chemical element that may create anions, acid oxides, acids, and stable hydrogen compounds. Examples include boron, carbon, and nitrogen. It belongs to group 13 to 17.

Elements with 4, 5, or 7 electrons in their outermost shell are considered non-metals. Non-metals include things like carbon, oxygen, chlorine, etc.

Natural substances known as non-metals are brittle and thermally and electrically inert (can not be easily rolled, moulding, extruding or pressing). The non-metallic elements in the periodic table are hydrogen, carbon, nitrogen, oxygen, phosphorus, arsenic, and selenium.

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Answer:

aluminium is more reactive than carbon. carbon is used to displace less reactive metals from their compounds. this happens since the carbon reacts with the other substance(s) in the compound, and the less reactive metal does not.

Answer:

Explanation: aluminium is more reactive than carbon. carbon is used to displace less reactive metals from their compounds. this happens since the carbon reacts with the other substance(s) in the compound, and the less reactive metal does not.It is highly reactive, though the metal is protected by a surface layer of inert transparent oxide (Al2O3) that forms rapidly in air, providing excellent corrosion resistance.

How many liters of oxygen gas were used up?

If 185 g of wax \(C_{22}H_{44}\) burns, 13.73 L of oxygen gas is used.

An ideal gas equation is:

The macroscopic characteristics of ideal gases are related to the ideal gas law (PV = nRT). Gas is considered to be perfect if its particles (a) do not interact with one another and (b) occupy no space (have no volume).

First, determine the gas's moles using the gas law.

PV = nRT, where n is the number of moles and R is the gas constant. Next, divide.

To obtain molar mass, multiply the given mass by the number of moles.

Data provided:

P= 101kpa =0.996792 atm

V= ?

R= 0.082057338 L atm K\(^{1} mol^{-1}\)

T=25 +273 =298 K

Moles =?

Moles = mass/molar mass = 185g/308.6

Moles =0.56

Putting value in the given equation:

PV/RT =n

0.56 = \(\frac{0.996792 atm XV}{0.082057338 L atm K^{1} mol^{-1} X 298}\)

13.73 L =V

13.73 L of oxygen gas was used up if 185 g of \(C_{22}H_{44}\) wax burns.

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Answer:

• Note that dissolving rate is known as solubility

• Increase in particle size:

• Increase in temperature:

• Increase in concentration:

• Increase in agitation [ high water concentration ]:

\(.\)

The new concentration of the KCl solution after mixing 1 L new volume is 0.28 M.

Concentration in terms of molarity will be calculated by using the below equation as:

M₁V₁ = M₂V₂, where

M₁ = molarity of old KCl solution = 1.6 M

V₁ = volume of old KCl solution = 175 mL = 0.175 L

M₂ = molarity of new KCl solution = ?

V₂ = volume of new KCl solution = 1 L

On putting all these values on the above equation, we get

M₂ = (1.6)(0.175) / (1) = 0.28 M

Hence resultant concentration is 0.28 M.

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Answer:

Hydrochloric Acid

Explanation:

NaOH + HCl = NaCl +H2O

In a Neutralization reaction a base (NaOH) and an acid (HCl) react together to form neutral products. H2O is always a product and a salt is also produced such as KCl or in this case NaCl.

The Na switches with the H to form NaCl.

and the 2 H and the O create H2O.

The neutralization reaction for this is Sodium Hydroxide + Hydrochloric acid → Sodium Chloride + Water.

Neutralization is a type of chemical reaction in which an acid and a base react with each other. In this reaction, neutralization results in the formation of any type of salt and water.

The proton (\(H^+\)) from the acid combines with the hydroxide (\(OH^-\)) from the base to make water \((H_2O)\). This type of reaction is known as neutralization reaction because it neutralizes the acid and base. If a strong acid and strong base react completely, then the resulting solution will have a pH of 7 (neutral).

For above given example,

Sodium Hydroxide is reacted with Hydrochloric acid to form Sodium Chloride and Water.

Thus, the neutralization reaction for this is Sodium Hydroxide + Hydrochloric acid → Sodium Chloride + Water.

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We need to convert mm of Hg to torr. One torr is equal to one millimeter of mercury (mmHg). Therefore, we can directly convert 943 mmHg to torr by using the conversion factor of 1 torr = 1 mmHg. So, 943 mmHg is equal to 943 torr.

We can explain that torr is a unit of measurement for pressure, named after Evangelista Torricelli, an Italian physicist who invented the barometer. It is defined as the pressure exerted by a column of mercury exactly 1 millimeter high at 0°C and standard gravity. Hg is the chemical symbol for mercury, a dense, silvery-white liquid metal that is commonly used in thermometers and barometers to measure pressure.
When measuring pressure in the medical field or in scientific experiments, torr is often used alongside other units such as pascals, atmospheres, and pounds per square inch (psi). Converting between different units of pressure can be done using conversion factors, which relate the value of one unit to another. In the case of mmHg and torr, the conversion factor is 1:1, so they can be used interchangeably.

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Answer:

a single compound as a reactant

Explanation:

A characteristics of a decomposition reaction is a single compound as a reactant.

A decomposition reaction is a chemical breakdown, that involves splitting a single chemical entity into two or more fragments.

A ------> B + C

where;

Thus, a characteristics of a decomposition reaction is a single compound as a reactant.

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The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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Answer:

Evaporation, Radiation

Explanation:

Evaporation of water from your skin if it is wet (sweating). ...

Radiation (similar to heat leaving a woodstove).

Answer:

1.w

2. Z

3. Y

4.X

...................

Answer:

hwjwjwkwjwnwnnwnw wiwjwjejejejeje

Answer:

Friction

Explanation: