Write the symbol and electron configuration for each ion and name the noble gas with the same configuration.
a. nitride
b. oxide
c. sulfide
d. bromide

The partial pressure of Xe in the mixture is 1.850 atm. (partial pressure of Xe = Total pressure - Partial pressure of He - Partial pressure of Ar = 1.850 atm).

To find the partial pressure of Xe, we need to subtract the partial pressures of He and Ar from the total pressure.

Total pressure = partial pressure of He + partial pressure of Ar + partial pressure of Xe

Given:

Total pressure = 2.40 atm

Partial pressure of He = 0.300 atm

Partial pressure of Ar = 0.250 atm

Let's solve for the partial pressure of Xe:

Partial pressure of Xe = Total pressure - Partial pressure of He - Partial pressure of Ar

Partial pressure of Xe = 2.40 atm - 0.300 atm - 0.250 atm

Partial pressure of Xe = 1.850 atm

Therefore, the partial pressure of Xe in the mixture is 1.850 atm.

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Ethanol (C2H6O), an alcohol has a much higher boiling point than dimethyl ether (C2H60) because hydrogen bonds found in the former are typically much stronger attractions than ordinary dipole moments in the latter.

This is referred to as the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.

Ethanol (C2H6O), an alcohol has a much higher boiling point than dimethyl ether (C2H60) because hydrogen bonds have a stronger attraction which  makes it more difficult for the atoms to be broken down hence the reason why the boiling point will be higher in this scenario.

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The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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Answer:

false I think, but not so sure

"Sam is being a good digital citizen by following a code of conduct.

A code of conduct is a set of rules that govern how people should behave online. It is important to follow a code of conduct because it helps to create a safe and respectful environment for everyone.

Here, Sam is following the code of conduct for his gaming group. This code of conduct may include rules about using offensive language, cheating, and griefing. By following these rules, Sam is helping to create a positive experience for everyone in his gaming group.

Therefore, Sam is following the code of conduct.

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1) Volume of oxygen gas produced is 3.19 L ; 2) Volume of gaseous HF produced is 4.92 L ; 3) Pressure of gaseous O₂ produced is 10.0 atm. ; 4) Pressure of gaseous B₂H₆ produced is 6292 mm Hg.5) 34.6 grams of phosphoric acid reacted.

Molar mass can be defined the mass of one mole of substance.

1.) Molar mass of potassium chlorate (KClO₃) is: 39.098 g/mol + 35.453 g/mol + 3 * 15.999 g/mol = 122.549 g/mol

10.5 g KClO₃ * (1 mol KClO₃ / 122.549 g KClO₃) * (3 mol O₂ / 2 mol KClO₃) = 0.1281 mol O₂

As V = (nRT) / P

= (0.1281 * 0.08206 * (25.0 + 273.15) ) / 1.05

So V = 3.19 L

Therefore, the volume of oxygen gas produced is 3.19 L.

2.) Molar mass of calcium fluoride (CaF₂) is: 40.078 g/mol + 2 * 18.998 g/mol = 78.076 g/mol

8.5 g CaF₂ * (1 mol CaF₂ / 78.076 g CaF₂) * (2 mol HF / 1 mol CaF₂) = 0.2171 mol HF

V = (0.2171  * 0.08206 / * 292.15 ) / 1.124

V = 4.92 L

Therefore, volume of gaseous HF produced is 4.92 L.

3.) Molar mass of HgO = 200.59 g/mol

125 g HgO = 125/200.59 = 0.623 mol HgO

From the balanced equation, 2 moles of HgO produces 1 mole of O₂

Therefore, 0.623 mol HgO produces 0.3115 mol O₂

As P = nRT/V

= (0.3115 mol)(0.08206 )(394.15 )/(9.61 )

P = 10.0 atm

Therefore, pressure of gaseous O₂ produced is 10.0 atm.

4. Molar mass of NaBH₄ = 37.83 g/mol

25.0 g NaBH₄ = 25.0/37.83 = 0.661 mol NaBH4

From the balanced equation, 2 moles of NaBH₄ produces 1 mole of B₂H₆

Therefore, 0.661 mol NaBH₄ produces 0.3305 mol  B₂H₆

As P = nRT/V

= (0.3305 )(0.08206 )(289.15 )/(8.10 )

P = 8.29 atm

8.29 atm = 6292 mm Hg

Therefore, pressure of gaseous  B₂H₆ produced is 6292 mm Hg.

5.) As n = PV/RT

n = (1.00 )(24.3 )/(0.0821 )(273 ) = 1.06 mol CO₂

1.06 mol CO₂ × (1 mol H₃PO₄/3 mol CO2) = 0.353 mol H₃PO₄

Molar mass of H₃PO₄ is 98.0 g/mol; so 0.353 mol H₃PO₄ × (98.0 g H₃PO₄/mol) = 34.6 g H₃PO₄

Therefore, 34.6 grams of phosphoric acid reacted.

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The final volume of the system, given that half of the gas is removed, leaving 0.50 mole in the cylinder and the system is warmed to 900 K is 18.45 liters

From ideal gas equation, we have

PV = nRT

Rearrange

V / nT = R/ P

R / P = Constant

Thus, we have

V₁ / n₁T₁ = V₂ / n₂T₂

Where

With the above formula, we can obtain the final volume of the system as follow:

V₁ / n₁T₁ = V₂ / n₂T₂

12.3 / (1 × 300) = V₂ / (0.5 × 900)

Cross multiply

1 × 300 × V₂ = 12.3 × 0.5 × 900

300 × V₂ = 5535

Divide both side by 300

V₂ = 5535 / 300

V₂ = 18.45 liters

Thus, the final volume of the system is 18.45 liters

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Radiation therapy uses the radioactive isotope of the alkali metal cesium (Cesium 137). A non-radioactive salt called cadmium chloride is marketed as an alternative cancer treatment. It is based on discoveries that cancer cells have an affinity for cesium ions and is also known as "high pH therapy" (1).

What is the cesium chloride chemical formula?

The inorganic compound with the chemical formula CsCl is known as calcium chloride or cesium chloride. In a variety of specialized applications, this colorless salt serves as a significant supply of caesium ions. Each caesium ion in its crystal structure constitutes a primary structural type that is coordinated by 8 chloride ions.

Is CsCl an electrical conductor?

For usage compatible with chlorides, cesium chloride is a great supply of crystalline cesium that is water soluble. When combined or dissolved in water, chloride compounds can conduct electricity when fused.

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Answer:

The ocean currents are too strong by the Amazon River to form deltas.

Explanation:

The Atlantic has sufficient wave and tidal energy to carry most of the Amazon's sediments out to sea, thus the Amazon does not form a true delta. The great deltas of the world are all in relatively protected bodies of water, while the Amazon empties directly into the turbulent Atlantic.

If a reaction has a negative ΔG and a positive ΔS, the reaction will be spontaneous at all temperatures.

If a reaction is spontaneous at all temperatures, it implies that the reaction will occur without the need for any external intervention, such as the addition of energy. For a reaction to be spontaneous, it must satisfy the criteria of thermodynamic favorability, which is determined by the change in Gibbs free energy (ΔG) associated with the reaction.

The relationship between ΔG, temperature (T), and the equilibrium constant (K) of a reaction is described by the equation ΔG = ΔH - TΔS, where ΔH is the change in enthalpy and ΔS is the change in entropy.

To ensure spontaneity at all temperatures, two conditions must be met:

ΔG must be negative: A negative ΔG indicates a thermodynamically favorable reaction, meaning the products have a lower Gibbs free energy than the reactants. If ΔG is negative, the reaction will proceed spontaneously in the forward direction.

ΔS must be positive: A positive ΔS signifies an increase in the overall entropy of the system. Higher entropy means more disorder, and spontaneous reactions often involve an increase in randomness. When ΔS is positive, it can compensate for the enthalpic term, ΔH, allowing the reaction to proceed spontaneously.

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Answer:

The mixture (B + C) will change from liquid to gases.

This is because at constant temperature, the mixture will evaporate.

Graph 1 is expected to be assigned for the mixture (B + C)

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Answer:

The law is named after Amedeo Avogadro who, in 1812, hypothesized that two given samples of an ideal gas, of the same volume and at the same temperature and pressure, contain the same number of molecules.

Explanation:

Explanation:

The following are the second ionization energies for the elements:

Mg = 15.03 eV

Si = 16.34 eV

P = 19.76 eV

Al = 18.82 eV

Na = 47.28 eV

From the above, it is clear to observe that Na has the largest second ionization energy.

Answer:

Na is the answer.

the enthalpy of reaction for HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s) 2NaCl(s) + H₂O(l) → 2HCl(g) + Na₂O(s) ∆H° = -507.1 kJ/mol NO(g) + NO₂(g) + Na₂O(s) → 2NaNO₂(s) ∆H° = -427.0 kJ/mol NO(g) + NO₂(g) → N₂O(g) + O₂(g) ∆H° = -43.01 kJ/mol 2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l) ∆H° = +34.02 kJ/mol the enthalpy of reaction for the given reaction is -39.1 kJ/mol.

We can use the given reactions and their enthalpies to find the enthalpy of reaction for the given equation.

The given equation is:

HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s)

We can break down this reaction into several steps using the given reactions as follows:

Na₂O(s) + 2HCl(g) → 2NaCl(s) + H₂O(l) (reverse of the given reaction)

∆H° = +507.1 kJ/mol (reverse the sign of given reaction)

2NaCl(s) + H₂O(l) → Na₂O(s) + 2HCl(g)

∆H° = -507.1 kJ/mol (given reaction)

NO(g) + NO₂(g) + Na₂O(s) → 2NaNO₂(s)

∆H° = -427.0 kJ/mol (given reaction)

2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l)

∆H° = +34.02 kJ/mol (given reaction)

NO(g) + NO₂(g) → N₂O(g) + O₂(g)

∆H° = -43.01 kJ/mol (given reaction)

Now, we can add these equations and their enthalpies to get the overall enthalpy of the given reaction:

HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s)

H₂O(l) + 2NaCl(s) → Na₂O(s) + 2HCl(g) ∆H° = -507.1 kJ/mol

Na₂O(s) + NO(g) + NO₂(g) → 2NaNO₂(s) ∆H° = -427.0 kJ/mol

2HNO₂(l) → N₂O(g) + O₂(g) + H₂O(l) ∆H° = +34.02 kJ/mol

NO(g) + NO₂(g) → N₂O(g) + O₂(g) ∆H° = -43.01 kJ/mol

HCl(g) + NaNO₂(s) → HNO₂(l) + NaCl(s) ∆H° = -39.1 kJ/mol

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Explanation:

Mol = g/MW

Mw of NH3 = 14 + 3(1) = 17

Mol = 34/17

= 2 mol

In order to properly balance an equation, we need to make sure that the same amount of elements on the reactants side matches the number of elements on the products side, we can do that by increasing the number in front of each molecule, the so called stoichiometric coefficient. In the reaction from the question we can properly balance by adding the following stoichiometric coefficients

3. Zn + 2 HCl -> ZnCl2 + H2

This will be a single displacement reaction, since Zn switched places with H2

4. Na2SO4 + SrCl2 -> 2 NaCl + SrSO4

In this case we have a Double displacement reaction, where we have two elements switching places and forming new compounds

5. S8 + 24 F2 -> 8 SF6

This is a Synthesis reaction, where two elements join together and form a new compound

6. 4 Fe + 3 O2 -> 2 Fe2O3

Again we have a Synthesis reaction

7. 2 C4H10 + 13 O2 -> 8 CO2 + 10 H2O

Here we have a Combustion reaction, this reaction mostly occur between hydrocarbons and oxygen gas, forming carbon dioxide and water as products

8. 2 MgO -> 2 Mg + O2

This is a Decomposition reaction, where one compound is decomposed into two or more elements

The temperature at which a solid transforms into a liquid at atmospheric pressure is referred to as the liquid’s melting point.

The fact that water boils at a greater temperature than fluorine makes option C the correct choice. The melting point of water is zero degrees Celsius (32 degrees F). Depending on the atmospheric pressure, different amounts of water will boil at different temperatures. When purified water reaches its boiling point at sea level, it does so at 212 degrees Fahrenheit (100 degrees Celsius).

Compared to fluorine, water has a greater boiling point. Regarding the melting and boiling points of water and fluorine molecules, this statement is accurate.

The temperature at which a substance's solid and liquid phases are in equilibrium is known as its melting point. A temperature at which a substance's vapour pressure reaches its boiling point.

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Statement C; They are 0°F and 100°F, respectively, correctly describes the melting and boiling points of water. But Instead of F it should be degree Celsius.

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Answer:

Difference between Vapor and Gas

Usually, a vapour phase consists of a phase with two different substances at room temperature, whereas a gas phase consists of a single substance at a defined thermodynamic range, at room temperature

Explanation:

Answer:

a. CO2 and H20

Explanation:

Chemically, this combustion process consists of a reaction between methane and oxygen in the air. When this reaction takes place, the result is carbon dioxide (CO2), water (H2O), and a great deal of energy. The following reaction represents the combustion of methane:

CH4[g] + 2 O2[g] -> CO2[g] + 2 H2O[g] + energy

One molecule of methane, (the [g] referred to above means it is gaseous form), combined with two oxygen molecules, react to form a carbon dioxide molecule, and two water molecules usually given off as steam or water vapor during the reaction and energy.

Answer:

D. Electromagnetic waves can travel through empty space.

Explanation:

Answer:

its drum roll please D.) Electromagnetic waves can travel through empty space

Explanation:

please wash your hands and stay safe 2021

The amount of heat transferred to the sample of sodium is 332,699.149.

The amount of heat absorbed or released by a substance can be calculated using the following formula;

Q = mc∆T

Where;

According to this question, 898.3g sample of sodium experiences a temperature change of +301.11 K. The specific heat capacity of sodium is 1.23 J/(g-K).

Q = 898.3 × 1.23 × 301.11

Q = 332,699.149 J

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Answer:

Below

Explanation:

125 ml = .125 L

.125 L  *   1.241  g/ L   = . 155 g

The E° for a galvanic cell is 0.000217 volts if  ∆G° = -6.3 kJ/mol and n = 3. (F = 96,500 J/(V･mol).

A galvanic cell or voltaic cell, named after the scientists Luigi Galvani and Alessandro Volta, respectively, is an electrochemical cell in which an electric current is generated from spontaneous Oxidation-Reduction reactions. A common apparatus generally consists of two different metals, each immersed in separate beakers containing their respective metal ions in solution that are connected by a salt bridge or separated by a porous membrane.

E°=ΔG°/-nF= -6.3/-3×96500=0.000217 V.

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Answer:

so the answer is A 5.199mol please. rate. me brainliest. if its. correct

Explanation:

N=nL

\(3.131 \times {10}^{24} = n \times 6.022 \times {10}^{23} \\n = \frac{3.131 \times {10}^{24} }{6.022 \times {10}^{23} } \\ n = 5.199mol\)

The current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.

To calculate the current in amperes, we need to use Faraday's laws of electrolysis and the stoichiometry of the reaction.

Faraday's laws state that the amount of substance produced or consumed during electrolysis is directly proportional to the quantity of electricity passed through the cell. The relationship is given by:

Q = nF

Where Q is the electric charge in coulombs (C), n is the number of moles of substance involved in the reaction, and F is Faraday's constant, which is equal to 96,485 C/mol.

In this case, the substance being produced is Cl2, and we know the mass of Cl2 produced, which is 4.8 x 10^5 g.

First, we need to calculate the number of moles of Cl2 produced:

Molar mass of Cl2 = 35.45 g/mol

Moles of Cl2 = mass / molar mass = (4.8 x 10^5 g) / (35.45 g/mol) ≈ 1.354 x 10^4 mol

Now we can calculate the quantity of electricity passed through the cell using Faraday's laws:

Q = nF

Q = (\(1.354 x 10^4\)mol) * (96,485 C/mol)

Q ≈ 1.308 x 10^9 C

The quantity of electricity is given in coulombs. To find the current, we need to divide this value by the time in seconds.

Given that the time is 18 hours, we convert it to seconds:

Time = 18 hours * 60 minutes/hour * 60 seconds/minute

Time = 6.48 x 10^4 seconds

Finally, we can calculate the current:

Current (I) = Q / Time

I = (1.308 x 10^9 C) / (6.48 x 10^4 s)

I ≈ 2.02 x 10^4 Amperes

Therefore, the current passing through the electrolytic cell is approximately 2.02 x 10^4 Amperes.

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ANSWER : 643.1 mL

STEPS:

V1/T1 = V2/T2

Volume of oxygen gas.

A sample of oxygen gas was initially at a temperature of 323 K.

The sample was heated to a new temperature of 377 K.

The volume of the sample at the new temperature of 377 K is 753.8 mL.

We want to find the volume of the sample at the initial temperature of 323 K.

To solve for the initial volume, we can use the combined gas law:

(V1/T1) = (V2/T2), where:

V1 is the initial volume of the gas

T1 is the initial temperature of the gas

V2 is the final volume of the gas

T2 is the final temperature of the gas

Rearranging the equation to solve for V1, we get: V1 = (V2/T2) x T1

Plugging in the values we know, we get:

V1 = (753.8 mL / 377 K) x 323 K

Solving for V1, we get:

V1 = 643.1 mL

Therefore, the volume of the oxygen gas sample at 323 K is approximately 643.1 mL.

ChatGPT

Answer:

A

Explanation:

Two specialized cells called 'guard cells' make up each stoma (stoma is singular for stomata). Plants have many stomata up to 400 per mm2 on their leaf surfaces and they are usually on the lower surface to minimize water loss.

Answer:

The answer is C (filler)

Answer: b hope im not wrong

Explanation:

The number of moles of acetic acid which has a molar mass of 60.05 g/mol present in 16.84 grams of acetic acid is 3.56.

Given the molar mass of Acetic acid (M) = 60.05 g/mol.

The mass of acetic acid (m) = 16.84g

Let the number of moles = n

A mole is a unit of measurement used in chemistry to measure amount of substance. It is calculated as molar mass by mass of the given substance. The mole is defined as the amount of a substance that contains as many elementary entities (atoms, molecules, ions, etc.) as there are atoms in exactly 12 grams of carbon-12. One mole of a substance contains this number of particles, and can be used to calculate the mass of a given sample of the substance.

n = 60.05/16.84 = 3.56 moles

Hence the required number of moles are 3.56.

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