Molar mass practice (IMAGE) GIVING 80 POINTS!!!!

The most likely reason for colloidal dispersion is electrostatic repulsion. Option [D] is correct.

This sample shows particles invisible to standard microscopy. It will pass through the filter paper, but not through the semi-permeable membrane. Centrifuged particles. spread gradually.

Three types of colloidal dispersion:

Repulsive electrostatic double-layer forces are involved in stabilizing charged colloidal particles in the presence of adsorbed light. Aggregation occurs simply as a result of a decrease in the surface charge of the particles (decreased zeta potential), a decrease in the electrical repulsion between colloidal particles, and the formation of van der Waals forces that promote initial aggregation of the colloidal particles.

To know more about colloidal dispersion, visit:

https://brainly.com/question/11640006

#SPJ1

PV = nRT is the equation for the ideal gas law, which can be changed to take only one of the other variables into consideration if the other variables are known.

complete question:

Complete the following table for an ideal gas.

a. Complete the first row.

b. Complete the second row.

c. Complete the third row.

d. Complete the fourth row.

A number of randomly moving point particles with no interparticle interactions make form an ideal gas, which is a type of theoretical gas. The ideal gas concept is useful since it conforms to the ideal gas law, a condensed equation of state, and is amenable to statistical mechanics analysis.

According to the ideal gas law (PV = nRT), ideal gases' macroscopic properties are connected. The particles of a gas are said to be perfect if they (a) do not interact with one another and (b) take up no space (have no volume).

To know more about Ideal Gas please click here ;

https://brainly.com/question/27870704

#SPJ1

The more stable conformer is the first conformation.

What is conformation?
Conformational isomerism, a type of stereoisomerism in chemistry, allows the isomers to interconvert simply by rotating around formally single bonds. Although any two atomic arrangements in a molecule that vary by rotation about a single bond can be referred to it as conformations, conformations which specifically correspond to local minima just on potential energy surface are referred to as conformational isomers as well as conformers. The transition states between both the local-minimum conformational isoforms are conformations that match local maxima on the energy surface. To interconvert each conformer to another during rotations about single bonds, one must pass a rotational energy barrier.

First Conformation:
H H H
Cl Cl H
Br H Br

Second Conformation:
H H Cl
Cl Br H
Br H H

The more stable conformer is the first conformation.

To learn more about conformation
https://brainly.com/question/28736126
#SPJ4

The compound is polar and the compound is T shaped.

We know that the Lewis structure of a compound tells us the way that electrons are arranged around a central atom in a compound. We can see that the Lewis structure would consist of the central atom and then the atoms that are surrounding the central atom of the molecule.

In any case, the valence electrons that surround each of the atoms in the compound would be shown as dots and they would surround the symbol of the elements to  which the atoms belong. We can now look up at the structure and be able to deduce what the compound can be able to look like.

The compound as shown is polar because of the fact that he compound is non symmetrical.

Learn more about Lewis structure:https://brainly.com/question/20300458

#SPJ1

The empirical formula is [tex]N_{a2C_{r2} } O_{7}[/tex].

Solution:

Mass of Na = 29.84 g

Mass of Cr = 67.49 g

Mass of O = 72.67 g

For Na =  [tex]\frac{1.297}{1.297}[/tex] = 1

For Cr = [tex]\frac{1.297}{1.297}[/tex] = 1

For O =  [tex]\frac{4.542}{1.297}[/tex] = 3.5

The ratio of Na: Cr: O = 1: 1: 3.5

To make the ratio in a whole number we are multiplying the ratio by 2, and we get:

The ratio of Na: Cr: O = 2: 2: 7

Taking the mole ratio as their subscripts.

The empirical formula for the given compound is[tex]N_{a2C_{r2} } O_{7}[/tex].

The empirical formula is the chemical formula of a compound and gives the proportion of elements present in the compound, but not the actual number or arrangement of atoms. This will be the smallest integer ratio of the elements in the compound. Derivation of the number of moles from the mass of each element. Divide the molar amount of each element by the minimum molar amount to get the exponent of the preliminary empirical formula.

Learn more about The empirical formula here:- https://brainly.com/question/1603500

#SPJ4

We can see from the images attached that a precipitate of silver chloride is formed as shown.

We know that a precipitate is a substance that that separates out of the solution as a solid. Thus if we have an aqueous phase reaction in which there is the combination of two of the reactants which are aqueous solutions. However, when the substnaces are mixed, we obtain a product that is solid. This solid product is whet we call the precipitate of the reaction that has just taken place.

As I said the precipitate would tend to separate out of the solution and then when that happens, we can see that the solid would be in a distinct phase from the rest of the solution.

In this case, the mixture of the sliver nitrate and the sodium chloride would produce a silver chloride precipitate that would separate out of the solution.

Learn more about precipitate:https://brainly.com/question/16950193

#SPJ1

Propanoic acid has an infrared spectrum that includes broad peak from 2500- 3300 cm and a sharp strong peak at 1710-1760cm.

The broad peak of carboxylic acid is caused by -OH from 2500 to 3500 cm⁻¹, and the strong peak caused by the carbonyl bond is from 1700 to 1725 cm⁻¹.

So propanoic acid is the answer.

A typical infrared spectrum can be visually separated into two areas at first glance. The left half, above 2000 cm⁻¹, often has few peaks but contains some extremely diagnostic data. The presence of saturated carbons is first shown by alkane C-H stretching absorptions just below 3000 cm⁻¹, and by signals just above 3000 cm⁻¹ showing unsaturation. Exchangeable protons, often from alcohol, amine, amide, or carboxylic acid groups, are indicated by a very broad peak in the range between 3100 and 3600 cm⁻¹. Since there are typically no additional absorptions at the frequencies between 2800 and 2000 cm⁻¹, the presence of alkyne or nitrile groups can be clearly recognized here.

Hence, Propanoic acid has an infrared spectrum that includes broad peak from 2500- 3300 cm and a sharp strong peak at 1710-1760cm.

To learn more about infrared spectrum refer- https://brainly.com/question/5951360

#SPJ4

ethanol acid and methanoic acid were used to prepare the ester compounds.

what are esters ?

Esters are carboxylic acid derivatives in which the hydrogen of the carboxylic acid (-COOH) has been replaced by an alkyl group (-R) such as methyl, ethyl, or a benzene ring such as phenyl. The ester functional group is denoted by the symbol -COOR. Esters are present in flowers and fruits, which give them their aroma. Esters are a particularly significant family of acid derivatives since they are used in a wide range of synthetic items such as fragrances, insecticides, solvents, and so on. An ester's name is made up of two parts. First, the alkyl group R' is directly linked to one of the oxygens in RCOOR'. The second portion is the name of the parent acid, with the '-ic acid' ending converted to '-ate' for ester.

ethanol acid and methanoic acid were used to prepare the ester compounds.

To learn more about esters follow the given link: https://brainly.com/question/15890361

#SPJ4

Thermal expansion caused by a rising temperature of the ocean, and water being added by the melting of land-based ice, are causes of sea-level rise.

Temperature is the unit used to describe heat or cold. It illustrates the natural flow of heat energy from a hotter to a cooler body and can be expressed in terms of a variety of arbitrary scales (one at a lower temperature). An iceberg has a much higher total heat energy than a match, despite the fact that a match burns at a much higher temperature. Temperature and a thermodynamic system's energy are not the same thing. In contrast to extensive features like mass or volume, such as temperature is referred to as an intense property—one that is independent of the amount of material being addressed—along with pressure, density, and other similar qualities.

To know more about  temperatures  visit : https://brainly.com/question/2160033

#SPJ4

The temperature increase of octane if the molar heat capacity of octane is 254.0 J/K•mol is 0.197K.

The temperature of a substance can be calculated using the following expression:

Q = mc∆T

Where;

According to this question, 0.07 moles of a sample of octane absorbed 3.5 kJ of energy. The temperature increase of octane if the molar heat capacity of octane is 254.0 J/K•mol. can be calculated as follows:

3.5 = 0.07 × 254 × ∆T

3.5 = 17.78∆T

∆T = 0.197K

Therefore, 0.197K is the temperature increase.

Learn more about temperature at: https://brainly.com/question/14281142

#SPJ1

False, Protons and neutrons are both present in the nucleus.

What is the nuclear force?

One of the four fundamental forces of nature, along with gravitational and electromagnetic forces, is the nuclear force. In fact, they are also referred to as strong forces since they are 10 million times more powerful than chemical binding forces. A force known as the nuclear force interacts with the protons and neutrons of atoms. The force that holds protons and neutrons in a nucleus together is known as the nuclear force. Protons and protons, neutrons and neutrons, or neutrons and neutrons can all be affected by this force. The nucleus is held together by this force.

The nucleus is at the center of an atom and accounts for the maximum mass of the atoms, a nucleus contains both protons and neutrons giving it an overall positive charge because the neutrons are of neutral or zero charges. As electrons are negatively charged and are very light in comparison to a proton or neutron, it is considered negligible in front of them. Due to the negative charge of the electron, it is under an attractive force known as the nuclear force from the nucleus, as we know opposite charges attract.

To know more about neutrons, click the link given

https://brainly.com/question/15559400

#SPJ4

The theoretical yield is 5.154 g

What is P- aminophenol?

White, reddish-yellow, or light brown crystals or powder make up P-AMINOPHENOL. when exposed to light, becomes violet. (NTP, 1992) One of the three potential isomers of amino phenol is 4-aminophenol, which has a single amino substituent next to the phenolic -OH group. As a metabolite, it serves a purpose.

Given,

P- aminophenol = 6.944 g

M.W OF P- aminophenol = 109.15 g/mol

Acetic anhydride = 3.490 g

M.W of acetic anhydride = 109.09 g/mol

M.W of acetaminophen = 151.16 g/mol

M.W of acetic acid = 60.052 g/mol

STEP 1

Calculate the mole of a given reactant

Mole of p-aminophenol = 0.0636 mol

Mole of acetic anhydride = 0.0341 mol

STEP 2

Write the balanced chemical equation

           H2NC6H4OH + (CH3CO)2O → C8H9NO2 + CH3COOH

at t=o    0.0636 mol       0.0341 mol

at t-=t     0.02965mol      0 mol              0.0341 mol     0.0341 mol

here, we can see that 1 mole of p aminophenol reacts with 1 mole of acetic anhydride and gives 1 mol of acetaminophen and 1 mole of acetic acid.

Therefore acetic anhydride is a limiting reactant because it has less mole than p- aminophenol

So,

0.0341 mole of acetaminophen will form.

Theoretical yield of acetaminophen = mole X M.W = 0.0341 X 151,1 = 5.154g

To know more about theoretical yield, click the link given

https://brainly.com/question/2765357

#SPJ4

Lewis formula for C4H6: Since C4H6 is composed up of covalent bonds, the total number of electrons will equal the sum of the electrons in carbon and hydrogen, providing there is no residual charge.

The hydrogen atom has one electron, while the carbon atom has six.

As a result, there will be a total of = (4 6) + (6 1) = 30 electrons.

Steps to draw lewis structure

Find the polyatomic ion or molecule's total number of valence electrons. Add one electron for each negative charge if the compound is an anion. For each positive charge if the substance is a cation, take one electron away.

The least electronegative element other than hydrogen makes up the centre atom. Single bonds join it to the outside atoms.

Fill the outside atoms' octets.

Fill the centre atom's octet.

Form several bonds until the core atom has an octet if you run out of electrons before it does.

To learn more about lewis structure

https://brainly.com/question/20300458

#SPJ4

The concentration of the NaOH solution is 0.20M.

What is concentration?
If you have strong concentration skills, you can direct all of your attention to the current situation. Concentration can also be used to describe something that is grouped together, as well as the strength or density of a solution. People are said to be concentrated when they are in a specific area in large numbers. There might be a concentration of artists in your city who live in the riverside warehouses. A substance that is present in large quantities relative to the volume is said to have a high concentration in a solution. For example, the Great Salt Lake contains very few fish due to high concentration of salt. You can say that you pay attention well if you possess good concentration skills.

The concentration of the NaOH solution can be determined by finding the point where the titration is complete.
This can be determined by looking for the point on the graph where the volume of HCl added is equal to the volume of the NaOH solution initially in the flask.
In this case, the volume of HCl added is equal to 100.0 mL, which corresponds to a pH of 7.
At this point, the concentration of the NaOH solution can be determined by taking the ratio of the concentrations of the two solutions, which is 0.20M/ NaOH = 100.0mL/ V NaOH.
Therefore, the concentration of the NaOH solution is 0.20M.

To learn more about concentration
https://brainly.com/question/29671988
#SPJ4

The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure.

It is used to demonstrate how the electrons in a molecule are positioned around particular atoms.

Electrons are shown as "dots" or, in the case of a bond, as a line connecting the two atoms. The octet rule and formal charges must be met in order to achieve the "best" electron configuration.

A Lewis structure is a visual representation of the electron distribution around atoms. The reason for learning to draw Lewis structures is to forecast the amount and type of bonds that may be formed around an atom.

Therefore, The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure.

To learn more about Lewis structure, refer to the link:

https://brainly.com/question/20300458

#SPJ1

The chemical progressively cools after heating. Another illustration of a substance is water..

What is specific heat, precisely?

The amount of energy required to elevate the temperature of 1 kilogram of a substance by 1 degree Celsius (°C) is known as specific heat. Since water has a higher specific heat than other substances, it requires more energy to raise its temperature.

In plain English, what's really specific heat capacity?

A pure substance's heating value per unit mass is referred to as its heat capacity, or just specific heat. It is represented in terms of J/kgK or, more accurately, J/kg°C and therefore is described as the amount of warmth required to raise the temperature pf 1 kg of a substance by 1 K.

To know more about specific heat visit:

https://brainly.com/question/11297584

#SPJ4

When solutions of strontium chloride and sodium sulphate react, two of these is a spectator ion.

So, option E is correct.

What do you mean by spectator ion?

Spectator ions may be either cations (positively-charged ions) or anions (negatively-charged ions). The ion is unchanged on both sides of a chemical equation and does not affect equilibrium. When writing a net ionic equation, spectator ions found in the original equation are ignored. Thus, the total ionic reaction is different from the net chemical reaction.

Spectator Ion Examples:

Consider the reaction between sodium chloride (NaCl) and copper sulfate (CuSO4) in aqueous solution.

2 NaCl (aq) + CuSO4 (aq) → 2 Na+ (aq) + SO42- (aq) + CuCl2 (s)

The ionic form of this reaction is:

2 Na+ (aq) + 2 Cl- (aq) + Cu2+ (aq) + SO42- (aq) → 2 Na+ (aq) + SO42- (aq) + CuCl2 (s)

The sodium ions and sulfate ion are the spectator ions in this reaction. They appear unchanged in both the product and reactant side of the equation. These ions just "spectate"  while the other ions form the copper chloride. The spectator ions are canceled out of a reaction when writing the net ionic equation, so the net ionic equation for this example would be:

2 Cl- (aq) + Cu2+ (aq) → CuCl2 (s)

To know more about spectator ions from the given link:

https://brainly.com/question/9512088

#SPJ4

An electrolytic cell is a cell in which an electric current drives a no spontaneous reaction.

What is electrolytic cell?

Any apparatus in which excess electricity is changed into chemical energy or conversely is an electrolytic cell. Such a cell normally includes two electrodes, which can be metal or electrical conductors, kept apart from one another and in interface with an electrolyte (q.v. ), which is commonly an ionic compound that has been dissolved or fused.

For instance, water can be electrolyzed to create gaseous oxygen and gaseous hydrogen with the use of an electrolytic cell.

Electrical energy is transformed into chemical energy in an electrolytic cell. Electricity is generated in this situation as a result of a spontaneous redox reaction. Electricity must be provided to start the redox reaction because it is not spontaneous.

Therefore, Option C is correct.

To learn more about electrolytic cell

Here: https://brainly.com/question/19854746

#SPJ4

Middle-in, first-out is not a common cost flow assumption used in costing inventory.

Explain 3 cost flow assumptions?

Companies utilize the average cost flow assumption to determine the costs associated with terminating inventory, cost of goods sold (COGS), and inventory in storage. Over the course of the accounting period, all items sold from inventory are averaged, and the average cost is then applied to the items.

Know that FIFO, LIFO, and averaging are the three cost flow assumptions that are most common in the US. Recognize the purpose of the LIFO conformity rule and that the existence of this tax rule is a major contributor to the usage of LIFO in the United States.

Therefore, Option B is correct.

To learn more about 3 cost flow assumptions

Here: https://brainly.com/question/26428647

#SPJ4

Answer:

which question do you need assistance with?

Chemists have categorized different sorts of modifications in the same way that they have categorized elements and compounds.

Changes are classified as either physical or chemical changes. Chemists investigate the transformations that matter can go through to learn a lot about the nature of stuff.

Physical changes and chemical changes are the two different types of changes that chemists examine.

A physical change is when a sample of matter experiences a change in some of its qualities but not in its identity. Water vapor is created when liquid water is heated.

Therefore, Chemists have categorized different sorts of modifications in the same way that they have categorized elements and compounds.

To learn more about physical change, refer to the link:

https://brainly.com/question/17931044

#SPJ1

The labels the table to indicate when each statement Is true. Labels can be used once, more than once, or not at all, The orange dye moves independently of the purple dye. 2. Concentration gradients exist that drive diffusion of both dyes. : free water, solute, free water, solute.

In chemistry, attention is the abundance of a constituent divided by way of the total quantity of an aggregate. several types of mathematical descriptions may be prominent: mass concentration, molar concentration, range concentration, and quantity concentration.

it's miles the amount of solute dissolves in one hundred g solvent. If the attention of the answer is 20 %, we understand that there are 20 g solutes in one hundred g solution. instance: 10 g salt and 70 g water are mixed and the solution is ready. find awareness of the answer by means of percentage mass.

Learn more about concentration here:

https://brainly.com/question/26255204

#SPJ4

SF2 is  the formula of the compound that would form between sulfur and fluorine , if the molecule contains only one sulfur atom and only single bonds are formed.

We employ the octet rule, which stipulates that all atoms in a compound are required to comply by, to confirm the correctness of any chemical structure. Every atom in the carbon IV oxide model exactly complies with the octet rule. The valence shell of each atom in the molecule is surrounded by eight electrons.

Its negative charge, which is 1.602176634 coulombs, the basic unit of electric charge, is equivalent to its own negative charge. The rest mass of an electron is 9.1093837015 10-31 kg, or 1/1,836 the mass of a proton. Because of this, an electron is thought to have far less mass than a proton or neutron, and its mass is ignored when calculating an atom's mass.

To know more about   bonds visit : brainly.com/question/13190131

#SPJ4

The  Sodium chloride reacts with fluorine gas to produce solid sodium fluoride and chlorine gas is 2Na+F₂→2NAF.

What is Sodium chloride ?

One of the most prevalent minerals on Earth and a crucial nutrient for many animals and plants is sodium chloride (NaCl), also known as salt. Seawater and underground rock formations are two natural sources of sodium chloride.

What is fluorine?

The most reactive element in all of chemistry is fluorine (F), which is also the first member of the halogen family. Both fluorides and fluorides-containing compounds, both organic and inorganic, are referred to by the terms "fluoride" and its ionic form (F-), respectively.

∴2Na+F₂→2NAF

Therefore, Sodium chloride reacts with fluorine gas to produce solid sodium fluoride and chlorine gas is 2Na+F₂→2NAF.

Learn more about Sodium chloride from the given link.

https://brainly.com/question/28106660

#SPJ4

a)BH3.THF is used to convert 1-pentane to pentanoic acid and b)NaCN is used to convert Bromobutane to pentanoic acid.

a) The conversion of 1-pentane to pentanoic acid using BH3, also known as hydroboration-oxidation, is a two-step reaction involving the reaction of 1-pentane with borane (BH3), followed by oxidation of the resulting 1-pentylborane with hydrogen peroxide or other oxidizing agents.

In the first step, 1-pentane reacts with borane (BH3) to form 1-pentylborane, through a process known as hydroboration. This reaction is catalyzed by a Lewis acid, such as aluminum chloride, and proceeds via a hydride transfer from the borane to the 1-pentane.

In the second step, the 1-pentylborane is oxidized to pentanoic acid using hydrogen peroxide (H₂O₂) or other suitable oxidizing agents. The oxidation is catalyzed by an acid, such as hydrochloric acid (HCl), and proceeds via a proton transfer from the 1-pentylborane to the hydrogen peroxide. The end result is the conversion of 1-pentane to pentanoic acid.

The overall chemical reaction for the conversion of 1-pentane to pentanoic acid using borane (BH₃) and hydrogen peroxide (H₂O₂) is as follows:

1-pentane + BH₃ + H₂O₂ → pentanoic acid + H₂O + BH₂

b)The conversion of 1-Bromo butane to pentanoic acid using sodium cyanide (NaCN) proceeds via a nucleophilic substitution reaction. The reaction mechanism involves the following steps:

1. Attack of the nucleophile, NaCN, on the carbon atom of 1-Bromo butane to form a tetrahedral intermediate.

2. Loss of a proton from the tetrahedral intermediate to form a carbanion.

3. Protonation of the carbanion by water (or another proton source) to form pentanoic acid.

The overall reaction can be represented as follows:

1-Bromo butane + NaCN → Pentanoic Acid + NaBr

To know more about reagents, click below:

https://brainly.com/question/26283409

#SPJ4

The separation compound using diffrence in boiling point melting point like physical properties.

What is physical properties.

A physical property is the any  measurable property that  whose value describes the state of a physical in  system. Changes in the  system's physical properties of  can be used to describe its transitions between the  momentary of state.

A physical property is a characteristic of the  matter that is not associated with in a  change in its chemicals composition. Familiar to the  examples of physical  properties that is include density, color, hardness, melting and boiling points, and the  electrical conductivity.

There are mainly two types of physical properties extensive and intensive.

Sol-The separation scheme to  used to separate the mixture of   based on differences in this  physical properties- such as boiling point melting point, solubility in a given solvent these are the three components.

To know more about physical properties click-

https://brainly.com/question/26549181

#SPJ4

9.1 x 10-4 M is the equilibrium concentration of Zn²⁺ in the given question.

What is the dissociation constant?

A dissociation constant is a particular kind of equilibrium constant used in chemistry, biochemistry, and pharmacology to measure an object's propensity to break down into its component parts, such as when a complex disintegrates into its component molecules or a salt disintegrates into its component ions.

Zn(OH)₄²⁻⇔  Zn²⁺  +  4(OH)⁻

0.0465         0             0

0.0465-x      +x         +4x

Kd=[Zn2+][(OH)-]^4/Zn(OH)42-

Hence the answer is 9.1 x 10-4 M.

To learn more about dissociation constant follow the link:

https://brainly.com/question/29588332

#SPJ4

The analysis of the IR Spectrum for Camphor depicts that there are peaks around 1780 cm-1 that show C=O stretching, 3000 cm-1 that shows C-H stretching, 1450 cm-1 and 1375 cm-1 that show CH2 and CH3 stretching, and 1050 cm-1 that shows C-O stretching.

A popular absorption technique for both qualitative and quantitative evaluations is infrared (IR) spectroscopy. Electromagnetic radiation that can change the rotational and vibrational states of covalent bonds in organic molecules is found in the infrared portion of the spectrum.

The "Tongues" and "Swords" Are The Main Things To Look For In An IR Spectrum.

Is there a broad, rounded peak in the 3400-3200 cm-1 range? There are hydroxyl groups (OH) present.

Is there a strong, abrupt peak in the area between 1850 and 1630 cm-1? That is where carbonyl groups (C=O) appear.

Camphor is a waxy, colorless substance with a potent scent. It is categorized as a cyclic ketone and terpenoid.

To know more about cyclic ketone please click here https://brainly.com/question/15878690

#SPJ1

Deadweight loss is potential gain that did not go to producer or the Consumer.

As a result of deadweight losscombined surplus (wealth) of the monopoly and the Consumer is less than that obtained by consumer in a competitive market.

In the given figure deadweight loss is shown by area of FHE. That is the option A is correct.

learn more about deadweight loss at

https://brainly.com/question/28044373

#SPJ1

note- complete question is attached below

Refer to the diagram to the right. The deadweight loss due to a monopoly is represented by the area

A) FHE

B) FQ1Q2E

C) FGE

D) GEH