The vapor pressure of pure cyclohexane is 32 torr at its freezing point of 6.55 celsius. calculate the vapor pressure of the solution in question 3 at this tempertaure.

Answer:

size and shape because solids nomally have a fixed shape and volume

I think it would be, C. Size and Shape.

Because, when measuring objects in solids u should measure the Size because the color is just paint and the texture is just how it feels. The shape can be measured in solids too.

So, your answer is C.

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With the exclusion of the first four features that are shared by all three classes of large molecules. They can all form strings of hundreds of repeating monomer units". Option C

This is further explained below.

Generally, A monomer is a molecule that, via a process known as polymerization, may interact with other monomer molecules to produce a longer polymer chain or three-dimensional network.

In conclusion, With the first four characteristics, which are shared by all three types of big molecules, are excluded. Each of them has the ability to create long, repeating monomer unit strings. Choice C

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they can all form strings of hundreds of repeating monomer units".

cq

Find the feature not shared by lipids, nucleic acids, and proteins. First exclude the four features that are shared by all three classes of large molecules.

O They are all based on carbon.

O They are all made from a limited variety of different building blocks. They can all form strings of hundreds of repeating monomer units. OTheir building blocks contains H on one end and OH on the other end. They are all broken down by hydrolysis.

40 Ne has 10 electrons which consist of 10 protons and 10 neutrons

Neon is a chemical element which is rare gas or noble gas as it has a stable octet electronic configuration, meaning it has 8 valence electrons in its outermost shell.

Neon belongs to group 0/VIII and period 1 of the periodic table.

An element is a substance which takes part in a chemical reaction. There are different classes of elements which includes the metals, nonmetals and the metalloids.

So therefore, 40 Ne has 10 electrons which consist of 10 protons and 10 neutrons.

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Answer:

I'm not verified but I do know that HNO3 is a base and a potent acid

Explanation:

It is used as a nitrating agent. because its base is more stable its stronger than nitrous acid HNO3 can be made by the formula NO 2 + H 2O → 2 HNO 3 + NO (the reaction of NO2 with water). it can be used to produce ammonium nitrates to make plastic, dye, and fertilizers, make explosives and a oxidizer in liquid-fueled rocket thrusters.

The gravitational force of attraction is 4.2 * 10^23 N.

The gravitational force is a force that acts on objects that are within the earth’s gravitational field. We know that the gravitational force is an attractive force and it acts on the mass as it is in the universe.

The force of gravity has its direction as towards the center of the earth. Knowing that;

F = Gm1m2/r^2

F = gravitational force

G = gravitational constant

M1 and M2 = masses of the objects

Hence;

When one of the masses is multiplied by 2, the magnitude of the gravitational force is doubled.

When the distance of separation is multiplied by 2, the magnitude of the gravitational force decreases by a factor of 4.

Now let us obtain the magnitude of the gravitational force;

F = 6.6743 × 10-11 * 1.90 * 10^27 * 1.99 * 10^30/(7.78 * 10^11)^2

F = 4.2 * 10^23 N

The gravitational force of attraction is 4.2 * 10^23 N.

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Answer:

What is the question?

Explanation:

This is a answer.

The desired output of this system which involves a bicycle for transportation is the bicycle forward motion.

This is defined as the process in which goods and people are moved from one location or place to another through the use of vehicle such as bicycle, motorcycle etc.

When riding a bicycle, the input is the force which is exerted on the pedal with the use of the legs and it then results in the bicycle moving forward (forward motion) and is referred to as the output which is therefore the reason why it was chosen as the most appropriate choice.

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Answer:

an oxygen atom with 8 electrons, 8 protons, and 9 neutrons

an oxygen atom with 8 electrons, 8 protons, and 9 neutrons

Explanation:

In order for atoms to be neutral, it has to have the same amount of electrons and protons

Answer:

bro you can explane why is so hard

Explanation:

The mass of the Copper coin is 44.9g

Given that,

q = 545.8 J ; c = 0.387 J/g°C ; ΔT = 31.4°C

To find the mass of the copper the following formula which is used to find the heat absorbed by a substance is to be used:

q = mcΔT

where
q = quantity of the heat

m = mass of the substance

c = specific heat capacity of the material

ΔT = change in the temperature

Therefore, on rearranging the formula to find the mass of copper coin we get,

m = q/cΔT

On substituting the values of q, c and ΔT we get

m = 545.8 J/(0.387 J/g°C * 31.4 °C)

On solving we get,

m = 44.9g

Therefore the mass of the copper coin is 44.9g.

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According to the research, the correct option is C. Amphibians have a closed circulatory system this means fluids are contained in tubes.

Therefore, we can conclude that according to the research, the correct option is C. Amphibians have a closed circulatory system this means fluids are contained in tubes.

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Pressure only affects the solubility of a substance in the gaseous phase, not the liquid or solid phase.

Solubility may be defined as the maximum amount of any substance that will significantly dissolve in a definite amount of solvent at a specified temperature. It is the property of substances that shows their ability to intermingle with other substances known as solvents.

According to the context of this question, liquids and solids exhibit practically no alteration in solubility with respect to changes in pressure. But when you enhance the pressure of a gas phase, the collision frequency between its particles increases, and thus the solubility goes up, as you reduce the pressure, the solubility goes down.

Therefore, the pressure only affects the solubility of a substance in the gaseous phase, not the liquid or solid phase.

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1. A proper progression utilizing conversion factors would be km to feet to inches.

2. Conversion factors allow you to effectively cross out the appropriate units along each step of the problem.

3. 246,000 mm is how many Km is 0246.

4. There are 2 electrons in the s orbital, and 3 in the p orbital.

A conversion factor is a number used to convert one set of units to another set by multiplication or division. If the conversion is required, the values ​​should be equal using the appropriate conversion factor. To find the electron configuration of an atom, we first need to know how many electrons the atom has. Aluminum has an atomic number of 13, so it has 13 electrons.

The last shell after the electron configuration is called the valence shell. The total number of electrons in the valence shell is called valence electrons. The electron configuration of the aluminum shows that there are three electrons in the last shell of aluminum. Therefore the valence electron of aluminum is 3 The outermost valence shell of aluminum has three electrons. Al now has an electronic configuration similar to the noble gas neon so it can donate three electrons to form a cation.

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The area of the telescope lens in square feet (ft²) is 7.429×10⁻² square foot)

92903 square millimeter = 1 square foot

From the question given above, the following data were obtained:

We can obtain the area in square feet as illustrated below:

92903 square millimeter = 1 square foot

Therefore,

6.902×10³ square millimeter = (6.902×10³ square millimeter × 1 square foot) / 92903 square millimeter

6.902×10³ square millimeter = 7.429×10⁻² square foot)

Thus, the area of the lens in square foot is 7.429×10⁻² square foot)

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Answer:

the answer Is d

Explanation:

Answer:

that would be D

Explanation:

hope this helps

~RayneIsLost~

The property that causes the zinc shavings to react faster than the chunk of zinc is called the surface area.

When performing any type of chemical reaction, the surface area is an important aspect to take into account because it significantly affects the reaction's rate. The rate of reaction increases with decreasing surface area.

When compared to zinc shavings, which have been broken down into zinc particles with smaller surface areas, a chunk of zinc is similar to a body of stone held together by strong bonding.

In comparison to the huge chunk of zinc, the reactive surface area of the zinc shavings is smaller. Reactants' lower surface areas make it necessary for them to be in close contact with the acid solution for the reaction to occur.

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Answer:

Energy conversion is the process of changing one form of energy into another.

If 1.50 g of H₂C₂O₄.2H₂O were heated to drive off the water of hydration, 1.071 g of anhydrous H₂C₂O₄ would remain.

The balanced chemical equation of reaction is :

           H₂C₂O₄.2H₂O  →  H₂C₂O₄ + 2H₂O

First calculate the molecular weight of hydrated H₂C₂O₄ -

Using the molecular masses of -

O = 16 g/mol, C = 12 g/mol, and H = 1 g/mol

Total mass of compound = 126 g/mol

Molecular mass of H₂C₂O₄ = 90 g/mol

and, molecular mass of water of hydration = 36 g/mol

The percentage of H₂C₂O₄ in H₂C₂O₄.2H₂O is -

% H₂C₂O₄ = 90 g/mol = 0.714 %

                    126 g/mol

To calculate remainingIf 1.50 g of H₂C₂O₄.2H₂O were heated to drive off the water of hydration, 1.071 g of anhydrous H₂C₂O₄ would remain.

The balanced chemical equation of reaction is :

           H₂C₂O₄.2H₂O  →  H₂C₂O₄ + 2H₂O

First calculate the molecular weight of hydrated H₂C₂O₄ -

Using the molecular masses of -

O = 16 g/mol, C = 12 g/mol, and H = 1 g/mol

Total mass of compound = 166 g/mol

Molecular mass of H₂C₂O₄ = 126 g/mol

and, molecular mass of water of hydration = 36 g/mol

% H₂C₂O₄ = 126 g/mol = 0.7590

                    166 g/mol

75.90 % of 1.50 g = 0.714

To calculate remaining amount of anhydrous H₂C₂O₄,

we take percentage of anhydrous H₂C₂O₄ with the mass of hydrous compound which is heated.

71.4% of 1.50 g = 1.071 g

Therefore,

The anhydrous H₂C₂O₄ remaining is 1.071 g.

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H - Hydrogen

He - Helium

Li - Lithium

Be - Beryllium

B - Boron

C - Carbon

N - Nitrogen

O - Oxygen

F - Fluorine

Ne - Neon

Na - Sodium

Mg - Magnesium

Al - Aluminum

Si - Silicon

P - Phosphorus

S - Sulfur

Cl - Chlorine

Ar - Argon

K - Potassium

Ca - Calcium

The bohr model describes that the electron is possible outside the nucleus of an atom. Electrons are negatively charged exist in orbits around the nucleus.

Because we assume that the only source of centripetal force is the nucleus's electrostatic force of attraction when we calculate the formula for a radius, energy levels, etc. Therefore, this only applies to atoms with a single electron. Repulsion caused by other electrons will also exist in multi-electron atoms.

Hydrogen atoms contain one electron, which is located outside the nucleus. With two protons, helium will also have two electrons.

The limitation with Bohr's model is that it performs admirably for atoms with just one electron, such as H or He+, but appallingly poorly for atoms with multiple electrons.

The atom of hydrogen possesses only one electron which are present outside the nucleus.

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Answer:

1.314E21 atoms

Explanation:

.310 / 142 = .002183

.002183 x 6.02E23 = 1.314E21

Controllable and scalable synthesis of hollow - structured porous aromatic polymer for selective adsorption and separation of hmf from reaction mixture of fructose dehydration is H-PAP show exclusive adsorption , without adsorption of fructose and HMF with high purity  from reaction mixture of fructose dehydration is recovered.

Hollow structure porous aromatic compound H-PAP with cavity were controllably prepared through surface coating and etching method under scalable synthesis. It is found that the fill factor (f) of a reactor is an important parameter for finding scalability of synthesis. the well developed H-PAP as adsorbent was investigate in adsorption of HMF (5-hydroxymethylfurfural) under static mode from single component to multi component aqueous solution. in the case of HMF adsorption from real reaction mixture of acid catalyzed fructose dehydration with high purity (94.4%) recovered.

thus,in controllable and scalable synthesis,HMF with high purity  from reaction mixture of fructose dehydration is recovered.

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The structure that will be formed is: 2-methyl, hexan-2-ol.

According to the query, the main chain has one distinct methyl group coming off of it. As a result, if we take away one carbon from the formula, we are left with six carbons, indicating that our structure has a six-carbon main chain.

CH₃ CH₂ CH₂ CH₂ CH₃

Additionally, it is said that we possess two tertiary alcohols. However, as the formula is C₇H₁₆O, only one more alcohol group can be added. When the functional group -OH is joined to a tertiary carbon, which is carbon with only one bond, the result is a tertiary alcohol. Since adding methyl groups and alcohol to the same carbon is the only way to convert our 6-carbon chain into tertiary alcohol, we are unable to add the -OH to either end of the chain. Therefore, in our 6-carbon chain, the 2-, 3-, 4-, or 5-carbon must receive the -OH:

CH₃-CH-CH₂-CH₂-CH₂-CH₃

         |

        OH

Our structure now comprises 6 carbons, a 6-carbon chain, and tertiary alcohol. We will extend our 6-carbon chain by one methyl group. We require a distinct methyl group that extends from the initial 6-carbon chain. We are limited to placing this methyl group on the 2-carbon. As a result, the structure we seek is:

   CH₃

        |

CH₃-C—CH₂- CH₂- CH₂-CH₃

        |

      OH

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Some examples of Desublimation include

Desublimation is a reverse process of sublimation in which the phase transition of a substance from gas to solid takes place directly without going through the liquid phase.

Desublimation is an example of exothermic phase change that occurs at temperatures and pressures below a substance’s triple point in its phase diagram.

Desublimation is also called as deposition. It occurs mainly by a drastic loss in thermal energy from the surrounding gas due to the presence of a much cooler surface.

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Answer:

Meter.

Explanation:

A foot is a American standard. Inch is also. A Mile is for a American. Kilometers are the metric. That leaves only the Meter.

A compound has 58. 29 g of oxygen, 4. 20 g of h, and 37. 51 g of carbon. The empirical formula is C6H8O7.

Empirical formulas are those that provide proportions of the constituent elements of a compound but not the precise number or arrangement of atoms.

This can be done by calculating molar ratio of elements using masses and molar masses of the element.

Mass of the Carbon (C) in given compound is= 37.51g

Mass of the Hydrogen (H) in given compound is= 4.20g

Mass of the Oxygen (O) in given compound is= 58.29g

Molar mass of C = 12.0107g

Molar mass of H = 1.00784g

Molar mass of O = 15.999g

by diving the mass of the elements with their respective molar masses we get number of moles of elements:

no. of moles of C= 37.51/12= 3.123moles

no. of moles of H= 4.20/1.00784 =4.167moles

no. of moles of O = 58.29/15.999 = 3.643moles

Molar ratio of elements/atoms can be obtained by diving the above number of moles with the lesser number of moles in the above three,

C= 3.123/3.123

H= 4.167/3.123

O= 3.653/3.123

Each ratio is multiplied by "6" to produce a complete number:

C= 1*6

H= 1.334*6

O= 1.166*6

The empirical formula is= C6H8O7.

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Benzene is a Solvent

Toluene is a Solute

Octylphenol ethoxylate is a Solute

Is benzene considered a solute?

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Answer:

Benzene is a solvent.

Toluene is a solute.

Octylphenol ethoxylate is a solute.

Explanation: