2 MnI2 + 13 F2 - 2 MnF3 + 4 IF5


Write the conversion factor to use when converting moles of MnIz to moles of F2

The coefficients of the balanced chemical reaction of solid magnesium with atmospheric nitrogen to produce solid magnesium nitride are ( 3 , 1 , 1 ) .

The balanced chemical reaction of solid magnesium with atmospheric nitrogen to produce solid magnesium nitride is mentioned below:

3 Mg (s)    +      \(N_{2}\)  (g)    →     \(Mg_{3} N_{2}\) (s)

We were asked to identify the coefficients of the balanced chemical  equation of the reaction of solid magnesium with atmospheric nitrogen to produce solid magnesium nitride.

From the above mentioned equation, we can write

coefficients of Mg = 3

coefficients of  \(N_{2}\)  (g)  = 1

coefficients of    \(Mg_{3} N_{2}\) (s)  = 1

3 , 1 , 1 are the coefficients of balanced chemical equation.

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Answer:

A

Explanation:

An unbalanced force is your answer.

Answer:

Model

Explanation:

A model of anything is something you make to represent it in it's physical world form

The statement that is not expected to be correct regarding properties of solids is b. Solid CaSO4 should sublime readily.

a. Solid potassium should be a good conductor of electricity: This statement is expected to be correct. Metals, including potassium, generally have a high electrical conductivity due to the presence of delocalized electrons.

b. Solid CaSO4 should sublime readily: This statement is not expected to be correct. Sublimation refers to the process where a solid directly converts into a gas without passing through the liquid state. Calcium sulfate (CaSO4) is not known for sublimation. Instead, it undergoes decomposition at high temperatures.

c. Molten LiCl should be a good conductor of electricity: This statement is expected to be correct. In the molten state, ionic compounds such as LiCl dissociate into ions, allowing for the movement of charged particles and enabling electrical conductivity.

d. Graphite should have a high melting point: This statement is expected to be correct. Graphite has a high melting point due to its layered structure held together by strong covalent bonds. These bonds require substantial energy to break, resulting in a high melting point.

e. Solid CO2 should have a low melting point: This statement is expected to be correct. Solid carbon dioxide, also known as dry ice, sublimes at atmospheric pressure at a temperature of -78.5 degrees Celsius. It does not melt into a liquid state under normal conditions.

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Answer:

28.01 percent

Explanation:

Iron (III) sulphate, \(Fe_2(SO_4)_3\), has 2 atoms of Fe.

One atom of Fe has a molar weight of 56. Hence, 2 atoms of Fe would have a total molar weight of 56 x 2 = 112 g/mol

Molar weight of  \(Fe_2(SO_4)_3\) = 399.88 g/mol

Percentage Fe in \(Fe_2(SO_4)_3\) = 112/399.88 x 100%

                       = 28.01%

The percentage of iron is iron (III) sulphate is, therefore, 28.01 percent.

The reaction between AgNO₃ and NaCl forms AgCl and NaNO₃. The balanced chemical equation for the above reaction is given as:

AgNO₃ (aq) + NaCl (aq) → AgCl (s) + NaNO₃ (aq)

The reaction between AgNO₃ and NaCl is both precipitation and double-displacement reaction. The balanced chemical equation is given as:

AgNO₃ (aq) + NaCl (aq) → AgCl (s) + NaNO₃ (aq)

                                          (ppt)

In a double displacement reaction the anions are exchanged and the more reactive element displaces the less reactive element. And in a precipitation reaction, a precipitate is formed in the end of the reaction. In this reaction, AgCl is formed as precipitate.

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To have precisely 0.5 moles of nitrate ions, 329 mL of the Ca(NO3)2 solution at 0.76 M are required.

To determine the volume of a 0.76 M solution of Ca(NO3)2 needed to have exactly 0.5 moles of nitrate ions, we can use the concept of molarity and the stoichiometry of the compound.

Ca(NO3)2 contains two nitrate ions (NO3-) per formula unit. Therefore, we can calculate the moles of Ca(NO3)2 required to obtain 0.5 moles of nitrate ions:

Moles of Ca(NO3)2 = 0.5 moles / 2 = 0.25 moles

Next, we can use the formula for molarity to find the volume of the solution:

Molarity = Moles / Volume

Rearranging the formula:

Volume = Moles / Molarity

Plugging in the values:

Volume = 0.25 moles / 0.76 M ≈ 0.329 liters

Since the volume is given in liters, we can convert it to milliliters by multiplying by 1000:

Volume = 0.329 liters × 1000 mL/liter ≈ 329 mL

Therefore, approximately 329 mL of the 0.76 M solution of Ca(NO3)2 are needed to have exactly 0.5 moles of nitrate ions.

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The statement that would compare the two isotopes of helium is b: they have a different number of neutrons

Isotopes is the word used in chemistry for the atoms of the same element that have different numbers of neutrons but consist of the same number of electrons and protons. The difference in the number of neutrons between the isotopes of an element illustrates that the various isotopes have different masses from each other.

Helium-4 and helium-5 differ in the number of neutrons as helium-4 has 2 neutrons and is the most stable isotope of helium. On the other hand, helium-5 is an unstable isotope consisting of three neutrons.

As isotopes do not differ in the number of protons and electrons; both these isotopes of helium have two protons.

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The cell notation for the electrochemical cell with a Pb(s) anode oxidized to Pb²⁺(aq) and a platinum electrode cathode where Fe³⁺(aq) is reduced to Fe²⁺(aq) is:

Pb(s)|Pb²⁺(aq, 1M)||Fe³⁺(aq, 1M), Fe²⁺(aq, 1M)|Pt(s)

The cell notation for the given electrochemical cell can be represented as follows:

Pb(s)|Pb²⁺(aq, 1M)||Fe³⁺(aq, 1M), Fe²⁺(aq, 1M)|Pt(s)

In this notation, the single vertical line "|" represents a phase boundary, while the double vertical lines "||" represent the salt bridge that connects the two half-cells. The anode (where oxidation occurs) is written on the left, and the cathode (where reduction occurs) is written on the right.

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The compounds are enantiomers.

Enantiomers are pairs of compounds that have exactly the same connectivity but opposite three-dimensional shapes. Enantiomers are not the same. One enantiomer cannot be superimposed on top of the other. Enantiomers are mirror images of each other. The easiest way to distinguish between enantiomers is to recognize that two molecules are mirror images of each other.

Enantiomers must be mirror images. The molecules in the image above are reflected on a thick line representing a specular surface. Examples of enantiomeric pairs of substances are the two optically active forms of tartaric acid called d-tartaric acid and l-tartaric acid. Stereoisomers that are mirror images of each other and are not superimposable are called enantiomers. Molecules whose mirror images are not superimposable and exist as enantiomeric pairs are said to be chiral and exhibit chirality.

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Answer:

Percent Yield = 80%

Explanation:

Percent yield of a reaction is defined as one hundred times the ratio between the actual yield and the theoretical yield. That is:

Percent yield = Actual Yield / Theoretical Yield * 100

Where theoretical yield of CaHPO4 is 10g and actual yield is 8g

Replacing:

Percent yield = 8g / 10g * 100

Answer:

77.6 g of Fe will be produced

Explanation:

The balanced chemical equation is 2Fe2O3 + 3C → 4Fe + 3CO2. We have 25.0 g of carbon present in the reaction. To calculate the mass of Fe produced, we can use stoichiometry.

First, we need to convert the mass of carbon to moles:

25.0 g C × (1 mol C / 12.01 g C) = 2.08 mol C

Next, we can use the mole ratio between carbon and iron to calculate the moles of iron produced:

2Fe2O3 + 3C → 4Fe + 3CO2

(2 mol Fe / 3 mol C) × (2.08 mol C) = 1.39 mol Fe

Finally, we can convert the moles of iron produced to grams:

1.39 mol Fe × (55.85 g Fe / 1 mol Fe) = 77.6 g Fe

Therefore, 77.6 g of Fe will be produced.

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Measurement is the number or quantity that shows the size of the object. The measurements from longest to shortest are yards, km, inch, and nm.

Length is measured by various scales that include the distance and the range that can be stated in a unit. The unit yard is the longest and is followed by kilometers, inches, and the nanometer.

Therefore, the order is yards, km, inch, and nm.

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Answer:

1.1352861919257495 mol

Explanation:

The particle's velocity needs to be increased to 0.56c in order to double its momentum.

To find the speed at which the particle's momentum is doubled, we need to use the momentum equation:

p = mv

where p is the momentum, m is the mass, and v is the velocity.

Since we want to double the momentum, we can set up an equation to solve for the new velocity:

2mv = p

We know the mass of the particle, m0, and we know its initial velocity, 0.28c. We can use these values to find its initial momentum:

p0 = m0v0 = m0 x 0.28c

Now we can plug in these values into the equation for doubled momentum:

2m0v = m0 x 0.28c x 2

Simplifying, we get:

v = 0.56c

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Answer: The answer is A heat and pressure

Explanation:

Answer:

seems like the simp is you tbh

-Sumin <3

First, that’s sus. Second, it sounds even more sus. Third, you should stop being sus. Fourth, stop the sus that I just witnessed right now

Therefore, the internal pressure of the gas in the can when its temperature reaches 433°C is approximately 52.9 atm.

In physics, pressure is defined as the force applied per unit area. It is a scalar quantity and is expressed in units such as pascals (Pa), pounds per square inch (psi), or atmospheres (atm). Pressure can be exerted by a gas or a liquid, and it is related to the density and temperature of the substance. It is an important concept in many areas of science and engineering, including fluid dynamics, thermodynamics, and materials science.

Here,

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

P1V1/T1 = P2V2/T

where P1, V1, and T1 are the initial pressure, volume, and temperature, and P2, V2, and T2 are the final pressure, volume, and temperature.

We can assume that the volume of the can is constant, so V1 = V2. We also need to convert the temperatures to Kelvin by adding 273.15 to them.

Plugging in the given values, we get:

(3.2 atm)(V) / (38°C + 273.15) = P2(V) / (433°C + 273.15)

Simplifying and solving for P2, we get:

P2 = (3.2 atm)(433°C + 273.15) / (38°C + 273.15)

= 52.9 atm

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The following chemical equations have been balanced using the appropriate coefficients.

Mg(OH)2 + NaCl → MgCl2 + 2NaOH

H2SO4 + BaCl2 → BaSO4↓ + 2HCl

AgNO3 + Fe(NO3)2 → AgFeO2↓ + 2NO3

Balancing chemical equations in chemistry involves adjusting the coefficients of the reactants and products in a chemical reaction so that the number of atoms of each element is equal on both sides of the equation.

Note: Never change the subscripts in a chemical formula to balance an equation. Only coefficients can be changed.

Mg(OH)2 + NaCl → MgCl2 + 2NaOH

H2SO4 + BaCl2 → BaSO4↓ + 2HCl

AgNO3 + Fe(NO3)2 → AgFeO2↓ + 2NO3

MgCl2 + 2NaOH → Mg(OH)2↓ + 2NaCl

3NaOH + Fe2(SO4)3 → Fe(OH)3↓ + 3Na2SO4

Pb(NO3)2 + 2KCl → PbCl2↓ + 2KNO3

MgSO4 + BaCl2 → MgCl2 + BaSO4↓

Cu(NO3)2 + 2KOH → Cu(OH)2↓ + 2KNO3

Al(OH)3 + NaOH → NaAlO2 + 2H2O

BaCO3 + H2SO4 → BaSO4↓ + CO2↑ + H2O

ZnCl2 + 2AgNO3 → 2AgCl↓ + Zn(NO3)2

BaSO4 + 2KOH → Ba(OH)2↓ + K2SO4

Fe(NO3)3 + 3KOH → Fe(OH)3↓ + 3KNO3

NaHCO3 + KHCO3 → NaKHCO3 + H2O + CO2↑

Ba(OH)2 + Na2CO3 → BaCO3↓ + 2NaOH

Al + H2SO4 → Al2(SO4)3 + H2↑

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Answer:

fermentation of crops that are high in sugar (starch) or fat into ethanol,

Explanation:

we should take out from point

Answer:

The number of protons in the nucleus of an atom is its atomic number, which is unique to each element.

Explanation:

Answer:

It's the same as the atomic number e.g. Oxygen has the atomic number 8 so it has 8 protons in the nucleus.  

Answer:

no it's is false because an electron have negative charges and it is not inside the atom and it is found out side the nucleus

Two mole of ideal gas is compressed isothermal from 10 to 10,000 atmospheric pressure at 500 degree kelvin then the entropy change in the process is  -114.86 J/K

Ideal gas is the hypothetical gas composed of molecule which follow a some rules in that ideal molecule do not attract or repel to each other and here given data is

Ideal gas = 2 mole

Pressure = P₁ = 10

Pressure = P₂ = 10,000

Temprature = 500 degree kelvin

We have to calculate entropy change in the process =?

We know the entropy change

ΔS = cv ln(T₂/T₁) +nR ln (P₂/P₁)

For isothermal compression temprature constant,

ΔS = nR ln (P₂/P₁)

ΔS = 2×8.314×ln(10/10,000)

ΔS = -114.86 J K⁻

ΔS = -114.86 J/K

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The student's claim of 4.64 × 10^24 molecules is incorrect, and the correct number of molecules of ammonium acetate used in the reaction is 6.022 × 10^22 molecules.

The mistake the student made is assuming that the molar mass of ammonium acetate directly corresponds to the number of molecules. However, the molar mass of a substance represents the mass of one mole of that substance, not the number of molecules.

To determine the correct number of molecules of ammonium acetate used in the reaction, we need to use Avogadro's number, which relates the number of particles (atoms, molecules, etc.) in one mole of a substance.

Avogadro's number is approximately 6.022 × 10^23 particles/mol. Given that the student used 0.100 mol of ammonium acetate, we can calculate the correct number of molecules by multiplying the number of moles by Avogadro's number:

Number of molecules = (0.100 mol) × (6.022 × 10^23 molecules/mol)

Performing the calculation, we find that the correct number of molecules of ammonium acetate used in the reaction is 6.022 × 10^22 molecules.

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Minerals with covalent bonding, such as diamond, are typically very hard. Metallic bonding results in minerals that are malleable and ductile, but not necessarily hard.

Van der Waals bonding is weaker and results in minerals that are relatively soft and have a low melting point.

The four types of bonding that are important in minerals are covalent, metallic, Van der Waals. The property of a mineral's resistance to scratching is called hardness.

Hardness is a physical property of minerals that describes their resistance to scratching by other minerals or materials. The Mohs scale is a way of ranking minerals according to their hardness.

The scale runs from 1 (the softest mineral, talc) to 10 (the hardest mineral, diamond). Minerals with covalent bonding, such as diamond, are typically very hard. Metallic bonding results in minerals that are malleable and ductile, but not necessarily hard.

Van der Waals bonding is weaker and results in minerals that are relatively soft and have a low melting point.

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