The ability of a substance to dissolve in another is called

Explanation:

2 V2O5 --> 4 V + 5 O2

from the formula, you know that

2 mol V2O5 give 5 mol O2

then 5.50 mol V2O5 will give

(2 mol V2O5)/(5 mol O2)=(5.50 mol V2O5)/(x mol O2)

(x mol O2)=(5.50 mol V2O5)×(5 mol O2)/(2 mol V2O5)

x mol O2 = 13.75

(16×2)g o2 / 1 mol o2 = x g o2 / 13.75 mol o2

32g o2 × 13.75 mol o2 / 1 mol o2 = x g o2 = 440g o2

hope it was helpful!

Answer:

expected configuration for Cr is

1s2 2s2 2p6 3s2 3p6 4s2 3d4

but in real, it is

1s2 2s2 2p6 3s2 3p6 4s1 3d5

electron from 4s orbital jumps to 3d orbital to get stable configuration.

so the last electron comes in 3d orbital as filling of 3d takes place after filling of 4s orbital.

Hence,quantum numbers for last electron in Cr is :-

n = 3

l = 2

m = +2

s = +1/2

Explanation:

Answer:

But its only 5 points, not 10

Explanation:

A. Chloroplasts

B. The cell wall and the vacuole

C. Vacuoles

D. The mitochondrion

The given blanks are filled with chlorophyll, cell wall and vacuole, chloroplasts, and mitochondria.  

• By the process of photosynthesis, the organisms, which comprises the pigment chlorophyll, this pigment convert the energy from the light into the chemical energy that can be stored in the form of sugars.  

• The cell wall and the vacuoles present in the cells of plants helps it to maintain shape and integrity.  

• The organelle within the plant, that is, chloroplasts works to store pigments and food. It stores pigment, that is, chlorophyll that converts light energy into the usable chemical energy.  

• The mitochondria by the process of cellular respiration converts the food into the usable form of energy. The mitochondria are found in all the plants and animals and are considered as converters.  

Thus, the correct answer of A is chlorophyll, B is cell wall and vacuole, C is chloroplasts, and D is mitochondria.  

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Answer: Filled and half filled orbitals are stable

Answer:

liquid

Explanation:

because when you see the particles inside of it, there are going to be less particles than a solid because there are more compact particles together

Answer:

1.37 × 10²³ atoms CO₂

Explanation:

Step 1: Define

Avagadro's Number: 6.02 × 10²³ atoms, molecules, formula units

Molar Mass C - 12.01 g/mol

Molar Mass O - 16.00 g/mol

Molar Mass CO₂ - 44.01 g/mol

Step 2: Use Dimensional Analysis

[tex]10.0 \hspace{3} g \hspace{3} CO_2(\frac{1 \hspace{3} mol \hspace{3} CO_2}{44.01 \hspace{3} g \hspace{3} CO_2} )(\frac{6.02(10)^{23} \hspace{3} atoms \hspace{3} CO_2}{1 \hspace{3} mol \hspace{3} CO_2} )[/tex] = 1.36787 × 10²³ atoms CO₂

Step 3: Simplify

We have 3 sig figs.

1.36787 × 10²³ atoms CO₂ ≈ 1.37 × 10²³ atoms CO₂

Thomas Edison is the answer...no a

Answer:

These discs absorb the stress and shock the body incurs during movement and prevents the vertebrae from grinding against one another. We can also compare it to glue because basically holds your vertebrates together

Answer:

3 × 10²⁰ molecules C₉H₃O₄

Explanation:

Step 1: Define

Avagadro's Number: 6.02 × 10²³ atoms, molecules, formula units, etc.

Molar Mass C - 12.01 g/mol

Molar Mass H - 1.01 g/mol

Molar Mass O - 16.00 g/mol

Molar Mass C₉H₃O₄ - 175.12 g/mol

Step 2: Use Dimensional Analysis

[tex]0.1 \hspace{3} g \hspace{3} C_9H_3O_4(\frac{1 \hspace{3} mol \hspace{3} C_9H_3O_4}{175.12 \hspace{3} g \hspace{3} C_9H_3O_4} )(\frac{6.02(10)^{23} \hspace{3} molecules \hspace{3} C_9H_3O_4}{1 \hspace{3} mol \hspace{3} C_9H_3O_4} )[/tex] = 3.43764 × 10²⁰ molecules C₉H₃O₄

Step 3: Simplify

We are give 1 sig fig.

3.43764 × 10²⁰ molecules C₉H₃O₄ ≈ 3 × 10²⁰ molecules C₉H₃O₄

Answer:

Name!!!!!

Explanation:

Answer:

it is the name

it doesnt have anynumbers or symbols

Answer:

D

Explanation:

Protons have pretty much nothing to do with reactions, but electrons affect reactions because that is how elements bond. A neutral sodium atom has 11 electrons while a neutral neon atom has 10 electrons, meaning D is correct.

Sodium is more likely to react with another element than an element such as neon because sodium has one more electron than neon. Thus, option D is correct.

Silver is a shiny metal that conducts electricity very well. It can be molded into thin sheets it means it can spread into a like a sheet and these type of properties is known as malleability.

Potassium is dull and brittle it means that it can't be change into sheet when you try to change in sheet it will break and these properties are called as brittlness and when it is has been dissolved into water, which it does quite easily. Physical properties of matter include color, hardness, malleability, solubility, electrical conductivity, density, melting points and boiling points.

Carbon is an element which is a chemical by nature and it is represented by C and the atomic number of carbon is 6. The atomic mass of carbon is 12.011 u and the carbon contain 2, 4 electrons per shell with the electronegativity of 2.55 .

Therefore,Sodium is more likely to react with another element than an element such as neon because sodium has one more electron than neon. Thus, option D is correct.

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The concentration of chloride ions when 2.5 g of FeCl is dissolved in 150 mL of water is approximately 0.54 M.

To determine the concentration of chloride ions when 2.5 g of FeCl is dissolved in 150 mL of water, we need to consider the molar mass of FeCl and perform some calculations.

The molar mass of FeCl is 55.85 g/mol (for iron) + 35.45 g/mol (for chlorine), which gives a total molar mass of 91.3 g/mol for FeCl.

First, we need to calculate the number of moles of FeCl present in 2.5 g of the compound. This can be done using the formula:

moles = mass / molar mass

moles of FeCl = 2.5 g / 91.3 g/mol = 0.027 moles

Next, we convert the volume of water from milliliters (mL) to liters (L):

volume of water = 150 mL = 150/1000 L = 0.15 L

Now, we can calculate the concentration of chloride ions (Cl-) using the formula:

concentration (Cl-) = moles of Cl- / volume of water

Since FeCl dissociates into one Fe3+ ion and three Cl- ions, the number of moles of Cl- is three times the moles of FeCl:

moles of Cl- = 3 * moles of FeCl = 3 * 0.027 moles = 0.081 moles

concentration (Cl-) = 0.081 moles / 0.15 L = 0.54 M.

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Answer:

just read the explanation.

Explanation:

1.Maintaining a healthy, perennial plant cover.

2.Mulching.

3.Planting a cover crop – such as winter rye in vegetable gardens.

4.Placing crushed stone, wood chips, and other similar materials in heavily used areas where vegetation is hard to establish and maintain.

Hope this helps. :)

Answer:

a strong attractive force between nucleons in the atomic nucleus that holds the nucleus together.

Explanation:

Nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. They bind protons and neutrons (“nucleons”) into atomic nuclei. The nuclear force is about 10 millions times stronger than the chemical binding that holds atoms together in molecules.Sep 14, 2014

Answer:

I could help but I don't understand the question

Explanation:

Answer:

58.44 g of NaCl are needed.

Explanation:

Given data:

Mass of NaCl needed = ?

Volume of solution = 200 mL (200/1000 =0.2 L)

Molarity of solution = 5 M

Solution:

We will solve this problem through molarity formula.

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Now we will put the values.

5 M = moles of solute / 0.2 L

Moles of solute = 5 mol/L × 0.2 L

Moles of solute = 1 mol

Mass of sodium chloride:

Mass = number of moles × molar mass

Mass = 1 mol × 58.44 g/mol

Mass = 58.44 g

Thus, 58.44 g of NaCl needed.

Answer:

It is required answer.

Explanation:

Given that :

1. using balanced chemical equation:

ammonium acetate:

The balanced equation is:

NH₃ + H₂O ===> NH₄OH

when ammonia gas dissolves in water then we get the base in form of ammonium hydroxide.

When  NH₄OH reacts with CH₃COOH then we get ammonium acetate and water

NH₄OH + CH₃COOH ===> [CH₃COO]- & NH₄+ & H₂O

So, we can say that,

when we are adding an acid and a base together then we get the product of H₂O and given elements.

2. addition of barium hydroxide to sulfuric acid:

the balanced equation is

H₂SO4+ Ba(OH)₂--> BaSO₄+ 2H₂O

when acid and base reacts together than we get barium sulphate and water

when sulfuric acid and barium hydroxide.

Hence, it is required answer.

Explanation:

Actual yeild is equal 75.1% of the theoretical yeild

(75.1/100)×3.12

= 2.34312

approximately = 2.34 g.

Answer:

The wavelength of these photons will become longer. The energy of each of these photons will become lower.

Explanation:

Light can be considered as electromagnetic waves. The wavelength of a wave is equal to the minimum distance between two troughs (lowest points) in this wave. On the other hand, the frequency of a wave is equal to the number of wavelengths that this wave travels in unit time.

Assume that the speed of light stays the same. The distance that this beam of light travels in unit time will be the same. However, with a lower frequency, there would be fewer wavelengths in that same distance. Therefore, the size of each wavelength will become longer.

If [tex]c[/tex] represent the speed of light and [tex]f[/tex] represents the frequency, then the wavelength would be:

[tex]\displaystyle \lambda = \frac{c}{f}[/tex].

The energy [tex]E[/tex] of each proton of a beam of light is proportional to the frequency [tex]f[/tex] of the light. Let [tex]h[/tex] denote Planck's Constant. The numerical relation between [tex]E\![/tex] and [tex]f\![/tex] would be:

[tex]E = h\, f[/tex].

Therefore, if the frequency [tex]f[/tex] of this light becomes smaller, the energy [tex]E[/tex] of each of its proton will also become proportionally lower.

Answer:

2Sb^(+3) (aq) + 3S^(-2) (aq) = Sb_2•S_3

Explanation:

First of all, let us balance the equation to give;

2Sb(OH)3 (s) + 3Na2S (aq) = Sb2S3 + 3NaOH

Now, we can observe the presence of positive Sodium ions (Na+) and negative hydroxyl ions (OH-) on both left and right sides of the equation.

Now, the two ions will cancel out. These ions are not really involved in the overall reaction and thus do not require being written in the overall equation. Hence, the overall net ionic reaction can now be written as:

2Sb^(+3) (aq) + 3S^(-2) (aq) = Sb_2•S_3

Answer:

i think its a mixture because it has different things mixed with it like chocolate, marshmallows and other stuff

Explanation:

The partial pressure of [tex]N_2[/tex]is 165.6 kPa and the partial pressure of [tex]H_2[/tex]is 434.4 kPa.

To calculate the partial pressures of [tex]H_2[/tex]and [tex]N_2[/tex]in the 10dmcube container, we need to use the ideal gas law equation, which states that the pressure of a gas is directly proportional to its number of moles and temperature, and inversely proportional to its volume.

First, we need to calculate the number of moles for each gas. Since we are given the volume of each gas and the volume of the container, we can use the formula:

Number of moles = Volume / Molar volume

The molar volume is the volume occupied by one mole of a gas at a given temperature and pressure. At standard temperature and pressure (STP), the molar volume is 22.4 L/mol.

For [tex]N_2[/tex], the number of moles is 2 dmcube / 22.4 L/mol = 0.089 mol
For [tex]H_2[/tex], the number of moles is 5 dmcube / 22.4 L/mol = 0.223 mol

Next, we can calculate the partial pressures of each gas using the formula:

Partial pressure = (Number of moles / Total number of moles) * Total pressure

The total pressure is the sum of the pressures of each gas:

Total pressure = Pressure of N2 + Pressure of [tex]H_2[/tex]

Given that the pressure of N2 is 100 kPa and the pressure of [tex]H_2[/tex]is 500 kPa, we have:

Total pressure = 100 kPa + 500 kPa = 600 kPa

Now we can calculate the partial pressure of [tex]N_2[/tex]:

Partial pressure of [tex]N_2[/tex]= (0.089 mol / (0.089 mol + 0.223 mol)) * 600 kPa = 165.6 kPa

Similarly, we can calculate the partial pressure of [tex]H_2[/tex]:

Partial pressure of H2 = (0.223 mol / (0.089 mol + 0.223 mol)) * 600 kPa = 434.4 kPa

Therefore, the partial pressure of [tex]N_2[/tex]is 165.6 kPa and the partial pressure of [tex]H_2[/tex]is 434.4 kPa.

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Answer:

Explanation:

The density of a substance can be found by using the formula

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

From the question

mass = 100 g

volume = 20 mL

So we have

[tex]density = \frac{100}{20} \\ [/tex]

We have the final answer as

Hope this helps you

The correct answer is B: Temperature and activation energy are the factors that affect the rate constant according to the Arrhenius equation.

According to the Arrhenius equation, which describes the relationship between the rate constant (k) of a chemical reaction and temperature, changing the factors of temperature and activation energy will affect the rate constant.

The Arrhenius equation is given by:

k = A * e^(-Ea/RT),

where k is the rate constant, A is the pre-exponential factor or the frequency factor, Ea is the activation energy, R is the ideal gas constant, T is the temperature in Kelvin, and e is the base of the natural logarithm.

From the equation, it is evident that the rate constant is directly influenced by temperature and activation energy. Increasing the temperature results in a higher rate constant, as the exponential term in the equation becomes larger. This is because higher temperatures provide more kinetic energy to the reacting molecules, leading to more frequent successful collisions and increased reaction rates.

Similarly, the activation energy affects the rate constant. A higher activation energy results in a lower rate constant, as the exponential term becomes smaller. Activation energy represents the energy barrier that reactant molecules must overcome to form products. A higher activation energy implies a slower reaction rate. option(B)

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