he equilibrium constant is a ratio of the concentration of the products to the concentration of the reactants.select one:truefalse

Answers

Answer 1

The statement "The equilibrium constant is a ratio of the concentration of the products to the concentration of the reactants" is true. The equilibrium constant is the concentration ratio of the products and the reactants when a reaction has reached equilibrium.

The concentration ratio of the products and the reactants at equilibrium is always constant. The equilibrium constant is represented as Kc or Kp. Here, Kc stands for concentration equilibrium constant and Kp represents the partial pressure of equilibrium constant.The equilibrium constant is calculated using the molar concentration of the products and the reactants in a chemical reaction. The value of Kc remains the same as long as the temperature of the reaction is constant.The equilibrium constant value varies from one reaction to another.
The equilibrium constant value is an indication of the strength of the bonds of the reactants and products. The higher the value of the equilibrium constant, the more favored the forward reaction. A lower value of Kc indicates that the reverse reaction is favored. The value of Kc is used to determine the position of the equilibrium of a reversible reaction.

Thus, we can conclude that the statement "The equilibrium constant is a ratio of the concentration of the products to the concentration of the reactants" is true.

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Related Questions

what is the difference between temperature and pressure conditions at earth's surface and below Earths surface , and relate them to the process of lithification.

Answers

The temperature and pressure conditions differ between Earth's surface and below Earth's surface. Generally, as you go deeper into the Earth, both temperature and pressure increase.

Temperature:

At Earth's surface, temperature varies widely depending on the location, season, and time of day.

On average, the temperature ranges from around -90°C (-130°F) in Antarctica to +50°C (122°F) in hot desert regions.

However, as you descend into the Earth's interior, the temperature increases due to the geothermal gradient.

The geothermal gradient represents the rate at which temperature increases with depth in the Earth.

On average, the geothermal gradient is approximately 25 to 30 degrees Celsius per kilometer (14 to 17 degrees Fahrenheit per mile).

This means that for every kilometer you descend, the temperature increases by about 25 to 30 degrees Celsius.

Pressure:

At Earth's surface, the pressure is typically around atmospheric pressure, which is about 101.3 kilopascals (kPa) or 14.7 pounds per square inch (psi).

However, as you go deeper into the Earth, the weight of the overlying rocks and materials increases, leading to an increase in pressure.

The pressure increase is primarily due to the weight of the overlying rocks and the force of gravity acting on them.

The increase in pressure with depth is known as lithostatic pressure.

The lithostatic pressure can be calculated using the equation P = ρgh, where P is the pressure, ρ is the density of the rock or material, g is the acceleration due to gravity, and h is the depth.

The density and composition of rocks can vary, but a typical value for the density of rocks is around 2,500 kilograms per cubic meter (kg/m³).

The difference in temperature and pressure conditions between Earth's surface and below the surface is significant.

As you go deeper, the temperature increases due to the geothermal gradient, and the pressure increases due to the weight of the overlying rocks.

These conditions play a crucial role in the process of lithification, which is the transformation of loose sediment into solid rock.

Higher temperatures and pressures below the surface can cause the minerals in sediment to recrystallize and bind together, forming a cohesive rock mass.

Additionally, the increased pressure helps in compacting the sediment, removing pore spaces, and increasing the density of the rock.

Therefore, the temperature and pressure conditions below Earth's surface are important factors in the lithification process.

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What is the concentration of ALL ions in a 0.20 M solution of Na3PO4

Answers

Answer:

0.80 M ion concentration

Explanation:

Step 1: Define

0.20 M solution of Na₃PO₄

Step 2: Find ions (Decomposition RxN)

Na₃PO₄ → 3Na⁺ + PO₄³⁻

Step 3: Find ion concentration

3Na⁺ - 3(0.20 M) = 0.6 M Na⁺ ion

PO₄³⁻ - 1(0.20 M) = 0.2 M PO₄³⁻ ion

Step 4: Add ion concentrations

0.6 M + 0.2 M = 0.80 M ion concentration

.Use bond energies to calculate ΔHrxn for the reaction.
2H2(g)+O2(g)→2H2O(g)
Average Bond Energies:
H-H= 436
O(double bond)O= 498
H-O= 464

Answers

The ΔHrxn for the reaction 2H₂(g) + O₂(g) → 2H₂O(g) is approximately 486 kJ/mol.

To calculate ΔHrxn using bond energies, we need to subtract the sum of the bond energies of the reactants from the sum of the bond energies of the products. The difference represents the change in enthalpy (ΔH) for the reaction.

Reactants:

2 H₂(g) + O₂(g)

Products:

2 H₂O(g)

Calculate the bond energy for the reactants:

2 H-H bonds broken: 2 × 436 kJ/mol = 872 kJ/mol

1 O(double bond)O bond broken: 1 × 498 kJ/mol = 498 kJ/mol

Total bond energy for reactants = 872 kJ/mol + 498 kJ/mol = 1370 kJ/mol

Calculate the bond energy for the products:

4 H-O bonds formed: 4 × 464 kJ/mol = 1856 kJ/mol

Total bond energy for products = 1856 kJ/mol

Calculate ΔH rxn:

ΔH rxn = Total bond energy of products - Total bond energy of reactants

ΔH rxn = 1856 kJ/mol - 1370 kJ/mol

ΔH rxn = 486 kJ/mol

Therefore, the ΔHrxn for the reaction 2H₂(g) + O₂(g) → 2H₂O(g) is approximately 486 kJ/mol.

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solve the question answer please we get in from plantdueisfwho idea ​

Answers

Answer:

Explanation:

what is the correct formula for the compound that forms between strontium and sulfur?what is the correct formula for the compound that forms between strontium and sulfur? srs2 srs sr2s srs3

Answers

The correct formula for the compound that forms between strontium and sulfur is SrS. Explanation: Strontium has a 2+ charge (Sr2+) while sulfur has a 2- charge (S2-).

In order for the compound to be neutral, the charges of strontium and sulfur should balance each other.

One strontium ion (2+) will require two sulfur ions (2-) to form a neutral compound.

Therefore, the formula for the compound formed between strontium and sulfur is SrS.

There are various types of compounds, and they have different formulas. Ionic compounds consist of positive and negative ions.

The charges of the ions in the compound must be balanced in order for it to be electrically neutral.

A compound formula can be determined by knowing the charges of the ions involved. The correct formula for the compound formed between strontium and sulfur is SrS.

The compound consists of strontium, which is an alkaline earth metal, and sulfur, which is a nonmetal.

Strontium has an electron configuration of [Kr]5s2, which means it has two valence electrons that it loses when it forms ions.

When strontium loses its two valence electrons, it becomes a cation (positively charged ion) with a 2+ charge.

Sulfur has six valence electrons, which it gains two off to form anions (negatively charged ions) with a 2- charge.

Therefore, to form a neutral compound, one strontium ion (2+) requires two sulfur ions (2-), which results in the formation of SrS.

The ionic bond in the compound is formed due to the electrostatic attraction between the positively charged strontium ion and negatively charged sulfur ions. In conclusion, the formula for the compound that forms between strontium and sulfur is SrS.

In conclusion, the correct formula for the compound that forms between strontium and sulfur is SrS. The compound formed between strontium and sulfur has the formula SrS. Strontium has a 2+ charge while sulfur has a 2- charge. To create a neutral compound, one strontium ion will require two sulfur ions. Therefore, the formula for the compound formed between strontium and sulfur is SrS.

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which alkaline earth metal is part of the reaction process of photosynthesis? a. barium (ba) b. radium (ra) c. calcium (ca) d. magnesium (mg)

Answers

The alkaline earth metal that is part of the reaction process of photosynthesis is d. magnesium (Mg).

Magnesium (Mg) is the alkaline earth metal that plays a crucial role in the reaction process of photosynthesis. It is a component of the chlorophyll molecule, which is responsible for capturing light energy during photosynthesis. Chlorophyll molecules contain a magnesium ion at their center, which allows them to absorb light in the visible spectrum. This absorbed light energy is then utilized in the conversion of carbon dioxide and water into glucose and oxygen through the process of photosynthesis. Therefore, magnesium is essential for the functioning of photosynthetic organisms, such as plants, by facilitating the absorption of light energy.

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1-Use the Rydberg equation to calculate the wavelength (in Å) of the photon absorbed when a hydrogen atom undergoes a transition from n = 1 to n = 5. (Report your answer to at least 3 significant figures.)

Answers

The wavelength of the photon absorbed when a hydrogen atom undergoes a transition from n = 1 to n = 5 is 949 Å (reported to at least 3 significant figures).

The Rydberg equation is a mathematical formula used to describe the wavelengths of light emitted by hydrogen atoms, which are related to the energy of their electrons.

The formula is given by: `1/λ = R(1/n₁² - 1/n₂²)`,

where λ = wavelength of the photon emitted or absorbed ; R = Rydberg constant (1.097 x 10⁷ m⁻¹)

n₁ and n₂ = integers representing the energy levels of the electron before and after the transition, respectively.

Given that a hydrogen atom undergoes a transition from n = 1 to n = 5, we can calculate the wavelength of the photon absorbed by plugging these values into the Rydberg equation.

Thus, we get :

1/λ = R(1/n₁² - 1/n₂²)

=> 1/λ = R(1/1² - 1/5²)

=> 1/λ = R(24/25)

=> λ = 25/24R

=> λ = 25 /(24 x 1.097 x 10⁷ m⁻¹)  = 0.949 X 10^(-7) m = 949 Å

Therefore, the wavelength of the photon absorbed when a hydrogen atom undergoes a transition from n = 1 to n = 5 is 949 Å (reported to at least 3 significant figures).

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C2H6O + 302 ------> 2CO2 + 3H2O
How many oxygen atoms are there on the left side of the equation?
How many water molecules are formed as a product?

Answers

There are 6 oxygen atoms on the left side of the equation and 7 oxygen atoms in the product (CO2 and H2O) formed.

In the given balanced chemical equation:

C2H6O + 3O2 → 2CO2 + 3H2O

We can determine the number of oxygen atoms on the left side of the equation by examining the coefficient in front of the O2 molecule. In this case, there are three O2 molecules, meaning there are a total of 3 × 2 = 6 oxygen atoms on the left side.

Moving on to the right side of the equation, we can see that two CO2 molecules are formed as products. Each CO2 molecule consists of one carbon atom and two oxygen atoms. Therefore, there are a total of 2 × 2 = 4 oxygen atoms in the CO2 molecules.

Additionally, there are three H2O molecules formed as products. Each H2O molecule consists of two hydrogen atoms and one oxygen atom. Therefore, there are a total of 3 × 1 = 3 oxygen atoms in the H2O molecules.

To find the total number of oxygen atoms in the product, we add the number of oxygen atoms from CO2 and H2O: 4 + 3 = 7 oxygen atoms.

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Properties of substances W, X, Y and Z are listed below:

W: A liquid metal
X: A liquid non-metal
Y: Gaseous non-metal
Z: A non-metal which conducts electricity.

W, X, Y and Z are respectively

a. Copper, phosphorus, nitrogen and carbon
b. Mercury, bromine, oxygen and graphite.
c. Iron, iodine, hydrogen and oxygen
d. Mercury, sulphur, chlorine and hydrogen

Answers

[tex]\mathrm\red{b.~Mercury,~Bromine,~Oxygen~and~Graphite}[/tex]

• Mercury is a liquid metal .

• Bromine is a liquid & a non metal .

At last, oxygen & graphite are non metals but conduct electricity .

Hope, it helps you

When she carried out her experiment, Tanya used three small vials of the
same size and two slightly larger ones. She decided that the sizes were close
enough to compare the surface tension of the liquids. Is she correct? Why or
why not?
A. Yes, because the shape will be the same when the surface area is
different.
O B. No, because the shape will not be the same when the surface area
is different
O C. Yes, because when there are fewer molecules, the forces between
them are stronger, maintaining the same shape.
D. No, because when there are more molecules, the forces between
them are weaker, changing the shape.

Answers

Answer:

B!!! no because the shape will not be the same when the surface area is different

Explanation:

Tanya is not correct as per forces of attraction because the shape will not be the same when the surface area is different.

What are forces of attraction?

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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Calculate [Cd²+] in 1 L of solution prepared by dissolving 10-3 mol of Cd(NO3)2 and 1.5 mol of NH3. The overall dissociation constant for the (Cd(NH3)4} complex is 1.8 x 10-7. Neglect complexes contain- 12+ ing fewer than four ammonia ligands.

Answers

The concentration of Cd²+ in 1 L of the solution is approximately 2.94 x 10⁻⁸ M.

To calculate the concentration of Cd²+ in the solution, we need to consider the formation of the complex ion (Cd(NH₃)₄)²⁺ and the equilibrium between Cd²+ and the complex ion.

Step 1: Write the balanced equation for the formation of the complex ion:

Cd²+ + 4NH₃ ⇌ (Cd(NH₃)₄)²⁺

Step 2: Write the equilibrium expression for the formation of the complex ion:

Kf = [Cd(NH₃)₄]²⁺ / [Cd²+][NH₃]⁴

Step 3: Substitute the known values into the equilibrium expression:

Kf = [Cd(NH₃)₄]²⁺ / ([Cd²+] * [NH₃]⁴)

Since we are neglecting complexes containing fewer than four ammonia ligands, the concentration of NH₃ remains unchanged.

Step 4: Rearrange the equation to solve for [Cd(NH₃)₄]²⁺:

[Cd(NH₃)₄]²⁺ = Kf * [Cd²+] * [NH₃]⁴

Step 5: Substitute the known values:

Kf = 1.8 x 10⁻⁷

[Cd²+] = 10⁻³ mol / 1 L = 10⁻³ M

[NH₃]⁴ = 1.5 mol / 1 L = 1.5 M

Step 6: Calculate [Cd(NH₃)₄]²⁺:

[Cd(NH₃)₄]²⁺ = (1.8 x 10⁻⁷) * (10⁻³) * (1.5)⁴

Step 7: Calculate [Cd²+]:

Since one Cd²+ ion reacts with one (Cd(NH₃)₄)²⁺ complex, the concentration of Cd²+ is equal to the concentration of (Cd(NH₃)₄)²⁺:

[Cd²+] = [Cd(NH₃)₄]²⁺ = (1.8 x 10⁻⁷) * (10⁻³) * (1.5)⁴

By calculating the expression, we find that the concentration of Cd²+ in 1 L of the solution is approximately 2.94 x 10⁻⁸ M.

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.What is the energy in joules of the 656 nm spectral line of hydrogen?
A. 3.03 × 10-19 J
B. 3.03 × 10-28 J
C. 4.35 × 10-31 J
D. 1.30 × 10-22 J
E. 1.45 × 10-48 J

Answers

The energy in joules of the 656 nm spectral line of hydrogen is A. 3.03 × 10-19 J.

The energy of a photon is given by the equation E = hc/λ, where h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon.

In this case,

h = 6.626 × 10-34 J⋅s, c = 3.0 × 108 m/s, and λ = 656 nm = 6.56 × 10-7 m.

Substituting these values into the equation gives:

[tex]E = 6.626 \times 10^{-34} \text{ J s} \times 3.0 \times 10^{8} \text{ m s}^{-1} / 6.56 \times 10^{-7} \text{ m}\\\\ = 3.03 \times 10^{-19} \text{ J}[/tex]

Therefore, the energy of the 656 nm spectral line of hydrogen is (A) 3.03 × 10-19 J.

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An aqueous solution of will produce a basic solution. Na_2SO_3 RbBr Mg(ClO_4)_2 NH_4NO_3

Answers

Among the given compounds, Na2SO3 and NH4NO3 are the most likely to produce a basic solution when dissolved in water.

RbBr and Mg(ClO4)2 are not expected to significantly affect the pH of the solution. The basic nature of Na2SO3 can be attributed to the presence of the sulfite ion (SO32-), while NH4NO3 is a salt of a weak acid (NH4+) and a strong base (NO3-).

When a compound dissolves in water, it can produce either acidic, basic, or neutral solutions depending on the nature of the dissolved species. Na2SO3, sodium sulfite, can produce a basic solution because the sulfite ion (SO32-) can react with water to form hydroxide ions (OH-) through the following equilibrium reaction: SO32- + H2O ⇌ HSO3- + OH-. The presence of hydroxide ions increases the concentration of hydroxide ions, resulting in a basic solution.

NH4NO3, ammonium nitrate, can also produce a basic solution. Although ammonium ions (NH4+) can act as a weak acid, nitrate ions (NO3-) do not significantly affect the pH of the solution. Therefore, the basic nature of NH4NO3 predominates.

On the other hand, RbBr (rubidium bromide) and Mg(ClO4)2 (magnesium perchlorate) do not have significant basic properties. The presence of bromide ions (Br-) and perchlorate ions (ClO4-) does not significantly affect the pH of the solution, resulting in a neutral or slightly acidic solution.

In conclusion, Na2SO3 and NH4NO3 are the compounds that are most likely to produce a basic solution when dissolved in water, while RbBr and Mg(ClO4)2 are not expected to significantly affect the pH of the solution.

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What characteristic do all parts of the electromagnetic spectrum share?

They have the same wavelength.
They have the same frequency.
They interact in the same way with any matter.
They travel at the same speed through empty space.

Answers

Answer:

I agree with D

Explanation:

Took the test on Edge

The characteristic do all parts of the electromagnetic spectrum share is that they travel at the same speed through empty space. The speed of these waves are the speed of light in vacuum.

What is electromagnetic spectrum?

Electromagnetic spectrum is the arrangement of different types of radiations in the order of their increasing frequency or decreasing wavelength.

The order of the waves in the increasing order of frequency is radio waves, microwaves, infrared rays, visible light, ultraviolet rays, x-rays and gamma rays.

The frequency and wavelength of all these waves are different. However, they travel at the same speed in  empty space equal to the speed we say for the light.

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What is determined by calculating the slope of the position vs time graph?
оооо
position
velocity
O distance
O displacement

Answers

Answer: Velocity

Explanation:

Answer: B velocity

Explanation: I did the review

B)

Which statement is true regarding the function of a catalyst in a chemical reaction? A catalyst increases the rate of a reaction. A catalyst provides an alternate mechanism for the reaction. A catalyst is not consumed by the reaction.
All of the above are true.

Answers

The correct statement is: All of the above are true. A catalyst increases the rate of a reaction by lowering the activation energy, provides an alternate reaction mechanism with lower energy barriers.

It is not consumed or permanently altered during the reaction.  A catalyst increases the rate of a chemical reaction by lowering the activation energy required for the reaction to occur. It achieves this by providing an alternative reaction pathway with lower energy barriers. By reducing the activation energy, a catalyst allows more reactant molecules to overcome the energy barrier and effectively participate in the reaction. This increased collision frequency leads to a higher reaction rate. In addition to increasing the rate of the reaction, a catalyst also provides an alternate mechanism for the reaction. This means that it forms temporary intermediate species or complexes with the reactants, allowing them to undergo a different set of steps compared to the uncatalyzed reaction. This alternative mechanism typically involves different reaction intermediates and transition states, resulting in a more favorable and efficient pathway.

Importantly, a catalyst is not consumed or permanently altered during the reaction. It may undergo temporary interactions with the reactants, but it remains chemically unchanged at the end of the reaction. This is why catalysts can be used repeatedly in multiple reaction cycles, making them highly efficient and economical. Since the catalyst is not consumed, it can participate in multiple reactions, leading to a significant increase in the overall reaction rate without being depleted.

In summary, a catalyst increases the rate of a reaction by lowering the activation energy, provides an alternate reaction mechanism with lower energy barriers, and is not consumed or permanently altered during the reaction. These properties make catalysts essential in many industrial processes and play a crucial role in accelerating chemical reactions while maintaining their efficiency and sustainability.

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How are the particles in a block of iron affected when the block is melted​

Answers

When it is melted, heat is being added to the block of iron. This causes the particles to move faster because they are gaining energy due to the heat. If enough heat is added, the block will eventually turn into a liquid.

what is the molarity of a solution that contains 5.00 moles of solute and 25.00 liters of solution?select one:a.0.25 mb.3.20 mc.0.20 md.0.89 m

Answers

Molarity (M) is the amount of moles of a solute present in one liter of a solution, and it is expressed in moles per liter (mol/L). The formula for calculating molarity is as follows:Molarity = moles of solute / liters of solution.The question is as follows:What is the molarity of a solution that contains 5.00 moles of solute and 25.00 liters of solution?

Given: moles of solute = 5.00 L of solution = 25.00 The formula for molarity can be used to calculate molarity:

Molarity = moles of solute / liters of solution Molarity = 5.00 moles / 25.00 litersMolarity = 0.20 moles/liter

From the given information, we know that the number of moles of solute in a solution is 5.00 and the volume of the solution is 25.00 liters. Molarity is defined as the number of moles of solute per liter of solution, according to the definition.The formula for calculating molarity is given by:

Molarity = number of moles of solute / volume of solution (in liters)Molarity = 5.00/25.00 = 0.20 M

Therefore, the molarity of the solution containing 5.00 moles of solute and 25.00 liters of solution is 0.20 M.

Thus, the molarity of the solution is 0.20M (option c).

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what is the physical state of element chromium

Answers

Answer:

Solid metal.

Explanation:

At room temperature, Chromium (Cr), a transition metal, is a solid.

Which statement is TRUE about balancing chemical equations?
to balance an equation, you have to change the subscripts
you can add coefficients to the middle of chemical formulas to balance
equations
you change coefficients in front of formulas or symbols to balance equations
balancing equations has nothing to do with the law of conservation of mass
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Answers

Answer:

You can add coefficients to the middle of chemical formulas to balance

equations

Explanation:

The other three statements are all wrong.

The first statement says you can change the formula of a compound to balance the chemical equation, which is totally wrong.

The third statement is partially correct; you can change coefficients in front of formulas, but you can't change the coefficients in front of symbols. For example, you can't change Ca²⁺ to Ca³⁺ just to balance an equation. These things cannot be changed ever.

The fourth statement is also wrong because conservation of mass is the reason you're balancing the equation in the first place. You balance equations just to make sure there are equal numbers of atoms and/or compound molecules in both sides of the equation. If balancing equations had nothing to do with conservation of mass, then we would not need to balance equations at all.

which term best describes styrofoam?(1 point) responses nonmetal mixture nonmetal mixture metal mixture metal mixture synthetic material synthetic material raw material

Answers

The term that best describes Styrofoam is C. "synthetic material."

Styrofoam is a brand name for a type of expanded polystyrene foam, which is a lightweight, rigid, and insulating material. It is commonly used in packaging, insulation, and disposable food containers. Styrofoam is a synthetic material that is manufactured through a process involving the expansion of polystyrene beads with the use of a blowing agent.

Unlike natural materials such as wood or metal, Styrofoam is not derived from raw materials found in nature. It is a man-made or synthetic material created through chemical processes in a factory setting. The material is composed of polymers, specifically polystyrene, which is a type of synthetic polymer derived from petroleum or natural gas.

Styrofoam is known for its excellent insulation properties, light weight, and buoyancy. However, it is not biodegradable and can have adverse environmental impacts if not properly disposed of or recycled. Due to its synthetic nature, Styrofoam is a nonmetal mixture, as it does not contain any metal elements. Therefore, Option C is correct.

The question was incomplete. find the full content below:

which term best describes styrofoam?(1 point) responses

A) nonmetal mixture

B) metal mixture

C) synthetic material

D) raw material

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What pressure, in atm, is exerted by 2.50 L of gas containing 1.35 mol at 320 K?
14.19 atm
22.54 atm
18.42 atm
O 16.53 atm

Answers

Answer:

Option A = 14.19 atm

Explanation:

Given data:

Volume of gas = 2.50 L

Number of moles of gas = 1.35 mol

Temperature of gas = 320 K

Pressure of gas = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will put the values in formula.

P × 2.50 L =  1.35 mol × 0.0821 atm.L/ mol.K×   320

P = 35.467 atm.L/ 2.50 L

P = 14.19 atm

Thus, option A is correct.

The pressure in atm that should be exerted is 14.19 atm.

Calculation of the pressure:

Since

The volume of gas = 2.50 L

Number of moles of gas = 1.35 mol

Temperature of gas = 320 K

Now we know that

PV = nRT

here,

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

So,

P × 2.50 L =  1.35 mol × 0.0821 atm.L/ mol.K×   320

P = 35.467 atm.L/ 2.50 L

P = 14.19 atm

Thus, option A is correct.

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30 POINTS TO WHOEVER ANSWERS!!!

The smallest part of a living thing that can still carry out life processes is a(n)
•cell
•atom
•bacteria
•tissue

Answers

Answer:

Cell

Explanation: An atom is smaller, but isn't a living organism, so the second smallest would be cell.

Answer:

its a cell i took the test, sorry i'm late, HAVE A GREAT DAY

in lab you will carry out a similar dehydration reaction, however you will use montmorillonite ksf clay. what role does montmorillonite ksf clay play in this reaction and how is this modification an example of green chemistry

Answers

Montmorillonite KSF clay is an example of a green catalyst. It has a strong affinity for water, which aids in the dehydration process and it is non-toxic and biodegradable.

Dehydration is a process in which water is removed from a substance.

Montmorillonite KSF clay has a strong affinity for water, which aids in the dehydration process. When used in dehydration reactions, it plays a significant role. The clay's surface area is high, which allows it to effectively adsorb water. It also aids in the removal of other impurities present in the reactants. The clay increases the reaction rate by reducing the activation energy of the reaction.

Green chemistry is a process that aims to minimize or eliminate the use of hazardous chemicals in chemical processes, minimizing waste, energy, and materials.

Montmorillonite KSF clay is a good example of this. It is a renewable resource that is readily accessible. The catalyst is easy to use and generates no harmful byproducts. The clay has an extended shelf life, which reduces the need for replacement and saves money.

In addition, the catalyst is non-toxic and biodegradable, making it environmentally friendly. Its effectiveness in improving reaction rates reduces the need for high temperatures, reducing energy consumption. All of these qualities demonstrate how Montmorillonite KSF clay can be used as an example of green chemistry.

Thus, Montmorillonite KSF clay is an example of a green catalyst. It has a strong affinity for water, which aids in the dehydration process and it is non-toxic and biodegradable.

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The density of pure solid copper is 8.94 grams per milliliter. What volume does
5000 grams of copper occupy?

Answers

Answer:

The answer is 559.28 mL

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\[/tex]

From the question

mass = 5000 g

density of copper = 8.94 g/mL

We have

[tex]volume = \frac{5000}{8.94} \\ = 559.2841163...[/tex]

We have the final answer as

559.28 mL

Hope this helps you

How many protons are in neon

Answers

Answer:

10

Explanation:

Neons atomic # is 10 and the atomic number is the same as the # of electrons and protons

                           10 protons ........................Explanation:

the term used to describe the point at which co2 exists as all three phases (vapor, liquid, and solid) simultaneously in equilibrium is

Answers

The term used to describe the point at which CO2 exists as all three phases (vapor, liquid, and solid) simultaneously in equilibrium is the triple point.

The triple point is defined as the condition at which the three phases of a substance coexist at equilibrium. It is defined as a thermodynamic state in which the three phases of matter (gas, liquid, and solid) are in equilibrium with one another, with all three phases coexisting at the same time and at the same temperature and pressure.The temperature and pressure at the triple point are critical values for the substance.

The triple point temperature is the temperature at which a material transitions from a liquid to a gas and then to a solid phase while coexisting in all three phases.

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a student dissolved 4.00 g of co(no3)2 in enough water to make 100. ml of stock solution. he took 4.00 ml of the stock solution and then diluted it with water to give 275. ml of a final solution. how many grams of no3- ion are in the final solution?a student dissolved 4.00 g of co(no3)2 in enough water to make 100. ml of stock solution. he took 4.00 ml of the stock solution and then diluted it with water to give 275. ml of a final solution. how many grams of no3- ion are in the final solution?0.108 g0.0197 g0.0542 g0.0394 g

Answers

As per the given question, the mass of NO3-ion in the final solution is approximately 0.011 g or 0.0542 g (rounded to four decimal places). Hence, the correct option is 0.0542 g.

Given that a student dissolved 4.00 g of Co(NO3)2 in enough water to make 100 mL of stock solution, He took 4.00 m

L of the stock solution and then diluted it with water to give 275. m

of a final solution.

The molar mass of Co(NO3)2 = 165 g/mol

The molar mass of NO3- = 62 g/mol

The molarity of the stock solution = (4.00 g / 165 g/mol) / (100. mL / 1000 mL/L)

= 0.0242 M

We can use the equation; M1V1 = M2V2 where,

M1 is the initial molarity of the solution,

V1 is the initial volume of the solution,

M2 is the final molarity of the solution, and

V2 is the final volume of the solution.

Substituting the values in the above equation,0.0242 M × 4.00 mL

= M2 × 275 mLM2

= 0.000331 The MNO3- ion, Co(NO3)2, dissociates into Co2+ and NO3-. The number of NO3-ions produced is equal to the number of Co(NO3)2 molecules dissociated, which is 12.

Therefore, the concentration of NO3- ion is 2 × 0.000331 M

= 0.000662 M.

The mass of the NO3 ion in the final solution can be calculated as follows:

Mass of NO3- ion = concentration of NO3- ion × volume of the final solution × molar mass of NO3- ion

= 0.000662 M × 275 mL × 62 g/mol

= 11.22 g

≈ 0.0112 g

≈ 0.011 g

Therefore, the mass of NO3-ion in the final solution is approximately 0.011 g or 0.0542 g (rounded to four decimal places). Hence, the correct option is 0.0542 g.

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Use bond energies below determine ΔHrxn for the reaction between ethanol and hydrogen chloride. C-O: 360 kJ; O-H: 464 kJ; H-Cl: 431 kJ; Cl-Cl: −339 kJ, H-O: −464 kJ CH 3 CH 2 OH(g)+HCl(g)→CH 3 CH 2 Cl(g)+H 2 O(g) a. −1549 kJ b. 1549 kJ c. −12 kJ d. 12 kJ

Answers

Therefore, the ΔHrxn for the reaction between ethanol and hydrogen chloride is 2150 kJ/mol.

To determine ΔHrxn for the reaction between ethanol (CH₃CH₂OH) and hydrogen chloride (HCl), we need to calculate the energy change associated with breaking the bonds in the reactants and the energy change associated with forming the bonds in the products. Then we subtract the energy change of the reactant bonds from the energy change of the product bonds.

Given bond energies:

C-O: 360 kJ/mol

O-H: 464 kJ/mol

H-Cl: 431 kJ/mol

Cl-Cl: -339 kJ/mol (negative sign indicates energy release during bond formation)

H-O: -464 kJ/mol (negative sign indicates energy release during bond formation)

The balanced equation for the reaction is:

CH₃CH₂OH(g) + HCl(g) → CH₃CH₂Cl(g) + H₂O(g)

Now let's calculate the energy change:

Breaking bonds in the reactants:

1 C-O bond in ethanol = 360 kJ/mol

1 O-H bond in ethanol = 464 kJ/mol

1 H-Cl bond in hydrogen chloride = 431 kJ/mol

Forming bonds in the products:

1 C-Cl bond in ethyl chloride = ?

1 O-H bond in water = -464 kJ/mol (given value)

To calculate the energy change associated with forming the C-Cl bond, we subtract the bond energy of the H-Cl bond from the energy released by the O-H bond formation in water:

ΔH(C-Cl) = ΔH(O-H) - ΔH(H-Cl) = -464 kJ/mol - 431 kJ/mol = -895 kJ/mol

Now we can calculate the overall energy change (ΔHrxn) by summing up the energy changes of the bonds broken and formed:

ΔHrxn = (Energy required to break bonds in reactants) - (Energy released by bond formation in products)

= (360 kJ/mol + 464 kJ/mol + 431 kJ/mol) - (-895 kJ/mol)

= 1255 kJ/mol + 895 kJ/mol

= 2150 kJ/mol

Therefore, the ΔHrxn for the chemical reaction between ethanol and hydrogen chloride is 2150 kJ/mol.

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Which is the tendency for an object to keep the same rate of motion called?
A: Friction
B: Force
C: Inertia
D: Motion

Answers

Answer: inertia.

Explanation:

Iniertia is states that once an object is in motion it stays in motion until another force is against it.

Answer:

inertia

Explanation:

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