which of the following is not a characteristic of solution?
A. it is a uniform mixture
B. it will scatter a beam of light
C. it is stable over time
D. the solute and solvent cannot be destinguished by the naked eye

Answer

A

Explanation

The ionization of HCO₃⁻ in H₂O is:

The general ionization constant, Ka is given as:

Hence, the ionization (Ka) of HCO₃⁻ is equal to:

Option A is the correct answer.

Answer:molecular

Explanation: got it right on acellus

The type of solid this particle model represents is a molecular solid.

Molecular solids are a type of solid composed of individual molecules held together by intermolecular forces. Unlike ionic solids or metallic solids, where the bonding is primarily due to strong electrostatic forces or delocalized electrons, respectively, molecular solids are held together by relatively weaker intermolecular forces.

In molecular solids, the individual molecules are discrete entities that retain their molecular structure even in the solid state.

Therefore, the correct option is option C

Learn more about molecular solids here:

https://brainly.com/question/31023413

#SPJ 5

The role of TRPV1, a polymodal receptor ion channel, as a molecular thermometer is well established.

According to recent research, heat and other TRPV1 activation mechanisms, such capsaicin and protons, interact with one another and may generally be selectively separated. When an activating stimulus is applied, the peripheral cavities dehydrate, which is a phenomenon that corresponds with N676's rotation towards the pore. A hydrophilic side chain inside the pore encourages its hydration, which increases its permeability to ions.

Because capsaicin activates the non-selective cation channel TRPV1, sodium and calcium ions flow through it into the cell to depolarize nociceptive neurons, causing action potentials to fire and ultimately producing the sensation of heat.

To know about TRPV1

https://brainly.com/question/30150422

#SPJ4

Answer:

Antigens (more info below)

Explanation:

Antigens determine the blood type and may be either proteins or sugar molecule complexes (polysaccharides). Genes in the blood group antigen group provide instructions for the production of antigen proteins. Blood group antigen proteins serve a variety of functions within the red blood cell membrane.

hope I helped!

NMR may not be an ideal way to determine structures in a mixture due to overlapping signals, signal intensity variations, complexity of the mixture, and magnetic equivalence. Alternative techniques, such as chromatography or mass spectrometry, may be more suitable for analyzing mixtures.

Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful tool for identifying molecular structures, but it may not be ideal for analyzing mixtures due to several reasons:

1. Overlapping signals: In a mixture, the NMR signals of different compounds may overlap, making it difficult to assign specific peaks to individual components. This can lead to challenges in interpreting the spectrum and determining the structures of each component.

2. Signal intensity variation: NMR signals depend on the concentration of the compounds in the mixture. If a component is present at a low concentration, its NMR signals may be weak and difficult to detect, making it challenging to identify the compound's structure.

3. Complex mixtures: When there are a large number of components in a mixture, the NMR spectrum can become very complex, making it difficult to assign peaks to specific compounds and determine their structures.

4. Magnetic equivalence: Some nuclei within a molecule may have identical chemical environments, leading to indistinguishable NMR signals. This can make it challenging to determine the structure of the compounds in the mixture.

To know more about NMR:

https://brainly.com/question/30899058

#SPJ11

Answer:

which parts electrical charges you are asking ??

Answer:

steam and methane

Explanation:

Large particles usually get smaller as a result of surface reactions. Both heating and freezing effects of tiny particles on the climate are seen.

Weathering can be classified as either physical or chemical. There is a wide variety in soil particle size due to variations in weathering processes.The overall surface area increases when the size is reduced more. This is significant since most chemical changes start at an object's surface.

The Earth's materials are the four major elements that make up the earth's crust. The earth is made up of minerals, rocks, soil, and water. Earth materials include the necessary building components for life, agriculture, and industry.

Learn more about earth materials here:

https://brainly.com/question/154923

One of two or more compounds that have the exact same number and type of atoms but have very different geometric arrangements.

In a structural isomer, sometimes referred to as a constitutional isomer, two or more organic molecules have the same molecular formulae but distinct structures. Despite having the identical chemical formula, the two molecules below differ in where the methyl group is located, making them into distinct molecules.

Chemical reactions occur when one or more chemicals, known as reactants, are changed into one or more new compounds, known as products. Chemical components or compounds make up substances. The atoms that make up the reactants are rearranged in a chemical reaction to produce various products.

To learn more about chemical reaction visit:

brainly.com/question/22817140

#SPJ4

Answer:

Sulfuric acid

Explanation:

Sulfuric acid is stronger than ethanoic acid because  H+ ions or proton totally ionise in sulfuric acid (H2SO4) whereas in ethanoic acid (CH3COOH)  H+ ion partially ionises. The resultant anion of sulfuric acid (HSO4-) is more stable  than anion of ethanoic acid (CH3COO-).

So, ethanoic acid is a weak electrolyte and is less stronger than sulfuric acid.

Hence, the correct answer is sulfuric acid.

Extensive property is dependent on mass. Intensive property is property that depends only on the type of matter rather than the amount. Hense, Volume is an example of Extensive property and Density is an example of Intensive property.

Hope this helps :)

The incompressible assumption is valid for a flow when the Reynolds number is low (Re < 2300) for air and other gases. It is valid for water and other liquids when the Reynolds number is low (Re < 2000).

It is valid for glycerin and other oils when the Reynolds number is low (Re < 100).

Incompressible assumption

For a fluid flow to be considered incompressible, the change in density due to changes in pressure or temperature must be negligible. The fluid is considered to be incompressible if the density changes by less than 5% when the pressure or temperature is varied.

For air, the incompressible assumption is valid for flow velocities less than 2000 feet per minute (fpm) at 20 degrees Celsius. For other gases, the incompressible assumption is valid for velocities less than 100 fpm at the same temperature.

For water, the incompressible assumption is valid for flow velocities less than 3 feet per second (fps) at 20 degrees Celsius. For other liquids, the incompressible assumption is valid for velocities less than 1 fps at the same temperature.

For glycerin and other oils, the incompressible assumption is valid for flow velocities less than 0.2 fps at 20 degrees Celsius.

Learn more about flow velocities: https://brainly.com/question/13385439

#SPJ11

Answer: \(Pb(NO_3)_2(aq)+2NH_4Cl(aq)\rightarrow PbCl_2(s)+2NH_4NO_3(aq)\) .

The insoluble product is lead (II) chloride.

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.  

A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.  

The balanced chemical equation is:

\(Pb(NO_3)_2(aq)+2NH_4Cl(aq)\rightarrow PbCl_2(s)+2NH_4NO_3(aq)\)

The insoluble product is lead (II) chloride.

Answer:

Saturated solution = 180 gram

Explanation:

Given:

Solubility of Z = 60 g / 100 g water

Given temperature =  20°C

Amount of water = 300 grams

Find:

Saturated solution

Computation:

Saturated solution = [Solubility of Z] × Amount of water

Saturated solution = [60 g / 100 g] × 300 grams

Saturated solution = [0.6] × 300 grams

Saturated solution = 180 gram

Chlorine has a lower electron affinity than bromine because it has a smaller nuclear charge and a larger atomic radius. This makes it less able to attract electrons to itself, whereas bromine has a larger nuclear charge and a smaller atomic radius, making it more effective at attracting electrons towards itself. Hence, the electron affinity of bromine is more negative than that of chlorine.

The electron affinity is defined as the energy required for an isolated gaseous atom to gain an electron to form a negative ion. Both chlorine and bromine are halogens, and they are located in the same group of the periodic table, meaning they have the same number of valence electrons. Nonetheless, bromine has a more negative electron affinity than chlorine, implying that it is more effective at attracting electrons towards itself than chlorine.Let's look at the explanations of why chlorine or bromine has a more negative electron affinity:The electron affinity of an atom increases as it becomes more difficult to add an electron to it, i.e., when the atom's atomic radius decreases. Bromine's atomic radius is greater than chlorine's, making it more difficult for bromine to attract electrons to itself. Despite this, bromine has a more negative electron affinity than chlorine, indicating that its nucleus has a greater hold over the added electrons.Chlorine has a lower electron affinity than bromine because it has a smaller nuclear charge and a larger atomic radius. This makes it less able to attract electrons to itself, whereas bromine has a larger nuclear charge and a smaller atomic radius, making it more effective at attracting electrons towards itself. Hence, the electron affinity of bromine is more negative than that of chlorine.

To know more about Chlorine visit:

https://brainly.com/question/19460448

#SPJ11

The correct option from the given statements concerning mixtures is (d) more than one correct response.

The statement (a) "The composition of a homogeneous mixture cannot vary" is incorrect as the composition of a homogeneous mixture can vary. For example, a mixture of salt and water is homogeneous and its composition can vary depending on the amount of salt and water mixed in it.

The statement (b) "A homogeneous mixture can have components present in two physical states" is correct. Homogeneous mixtures are mixtures that are uniform throughout their composition, meaning that there is no visible difference between the components of the mixture. For example, a mixture of ethanol and water is homogeneous and its components are present in two physical states (liquid and liquid).

The statement (c) "A heterogeneous mixture containing only one phase is an impossibility" is incorrect. A heterogeneous mixture is a mixture where the components are not evenly distributed and the mixture has different visible regions or phases. However, it is possible for a heterogeneous mixture to contain only one phase. For example, a mixture of oil and water is heterogeneous but can have only one phase.

To know more about homogeneous visit:

https://brainly.com/question/30587533

#SPJ11

In this case, the solute is C6H4Cl2 (dichlorobenzene) and the solvent is ethanol. The molality of C6H4Cl2 in the solution is approximately 0.0210 mol/kg.

The molality of a solute in a solution is calculated by dividing the moles of the solute by the mass of the solvent in kilograms. In this case, the solute is C6H4Cl2 (dichlorobenzene) and the solvent is ethanol.
To find the moles of C6H4Cl2, we need to convert the given mass of C6H4Cl2 (2.97 g) into moles.

We can use the molar mass of C6H4Cl2, which is approximately 147.01 g/mol.
2.97 g of C6H4Cl2 / 147.01 g/mol ≈ 0.0202 mol of C6H4Cl2
Next, we need to convert the mass of the solvent (966 g of ethanol) into kilograms.
966 g of ethanol / 1000 = 0.966 kg of ethanol
Finally, we can calculate the molality:
Molality = moles of solute / mass of solvent in kg
Molality = 0.0202 mol / 0.966 kg ≈ 0.0210 mol/kg

(rounded to four significant figures)
Therefore, the molality of C6H4Cl2 in the solution is approximately 0.0210 mol/kg.
To know more about molality visit:

https://brainly.com/question/29808886

#SPJ11

In the heliocentric model, the object at the center of the solar system is the Sun. Therefore, the answer is B.

What is the heliocentric model?

The heliocentric model is a theory that places the Sun at the center of the solar system, with all the planets orbiting around it. This model was first proposed by the ancient Greek astronomer Aristarchus of Samos in the 3rd century BCE, but it was not widely accepted until the 16th century when the Polish astronomer Nicolaus Copernicus presented a detailed mathematical description of the heliocentric model.

The heliocentric model provided a more accurate description of the solar system, and it was later confirmed by the observations and calculations of other astronomers such as Johannes Kepler and Galileo Galilei. The heliocentric model is now widely accepted, and it forms the basis of modern astronomy.

To know more about the solar system, visit:

https://brainly.com/question/29608606

#SPJ1

The complete question is: The Sun is at the center of the solar system in the heliocentric model.

The statement that best describes the use of a chemical indicator in a titration is it must change color near the equivalence point.

Indicators are those compounds which are used in the titration process to estimate the presence of chemical entities in it.

In the titration process, indicator is added in the titration solution which changes its color when the reaction mixture goes towards the equivalence point and becomes disappear at that point.

Hence option (4) is correct.

To know more about indicators, visit the below link:
https://brainly.com/question/15817923

Lead nitrate is a white crystalline solid. The material is soluble in water. It is noncombustible but it will accelerate the burning of combustible materials.

If large quantities of the lead nitrate material are involved in the fire an explosion may result. Prolonged exposure of the material to fire or heat may result in an explosion. Toxic oxides of nitrogen are produced in fires involving this material. Because there is a Roman number IV in the name of the compound next to the word "lead nitrate," we can infer from the name of the compound that lead (Pb) in this case has a 4+ charge. This ionic compound's formula is Pb(NO 3 _3 3 ) 4 _4 4 because there must be four nitrate anions because they always have one charge. White or colorless lead nitrate is a material that resembles sand. It is employed in the production of specific explosives, photography, the dye industry, and process engraving.

N2O6Pb or Pb(NO3)2

Thus, we obtain the formula as Pb(NO3)4 P b ( N O 3 ) 4 . Hence, formula of compound formed by the combination of Pb4+ P b 4 + and NO−3 N O 3 − is Pb(NO3)4 P b ( N O 3 ) 4

Learn more about lead (IV) nitrate here:

brainly.com/question/11438084

#SPJ4

The heat transferred when 4.5 grams of Carbon reacts with H2O is approximately 42.38 kJ. Therefore, the correct option is 42 kJ absorbed.

Option B.

Given reaction is as follows: C(s) + H2O(g) + 113 kJ → CO(g) + H2(g)To find the amount of heat transferred when 4.5 grams of Carbon reacts with H2O, we have to first find the amount of moles of Carbon present. The molar mass of Carbon is 12 g/mol. Therefore, the amount of moles of Carbon can be calculated as follows:mass of carbon/molar mass of carbon=4.5 g/12 g/mol=0.375 molNow, to find the amount of heat transferred, we use the equation, q = n∆Hwhere q is the heat transferred, n is the amount of moles of Carbon present, and ∆H is the enthalpy change for the given reaction. ∆H is given in the equation as 113 kJ.To find the sign of ∆H, we look at the reactants and products. In the given reaction, Carbon reacts with H2O to form CO and H2. Since Carbon and H2O are reactants and CO and H2 are products, this reaction is an endothermic reaction. Hence, the value of ∆H is positive.∆H = 113 kJ/molNow, substituting the values in the equation, q = n∆Hq = 0.375 mol × 113 kJ/molq = 42.38 kJ (approx)

Option B.

For more questions on heat

https://brainly.com/question/30738335

#SPJ8

According to Charle's law, the volume of the given mass of a gas is directly proportional to its absolute temperature provided that the pressure is constant. Mathemically;

where;

V1 and V2 are the initial and final volume of the gas

T1 and T2 are the initial and final temperatures of the gas (in Kelvin)

Given the following parameters:

Substitute the given parameters into the formula;

Therefore the volume of the gas at 20°C is approximately 97.67cm³

Answer:

A) Boron

Explanation:

I put oxygen and it was wrong lol. So, it said it was Boron

In chemistry, pressure refers to the force per unit area exerted by gas molecules on the walls of the container in which they are enclosed. It is often measured in units of pascals, atmospheres, millimeters of mercury, or pounds per square inch. Pressure is an important variable used to describe the behavior of gases and is related to other gas variables, such as volume and temperature, through the ideal gas law.

To solve this problem, we can use the combined gas law equation:

(P1V1)/T1 = (P2V2)/T2

where:

P1 = original pressure = 624.0 mmHg

V1 = original volume = 225.0 L

T1 = original temperature = 18.0°C + 273.15 = 291.15 K

P2 = new pressure (what we want to find)

V2 = new volume = 175.0 L

T2 = new temperature = -6.50°C + 273.15 = 266.65 K

Substituting the values into the equation, we get:

(624.0 mmHg x 225.0 L)/291.15 K = (P2 x 175.0 L)/266.65 K

Simplifying and solving for P2, we get:

P2 = (624.0 mmHg x 225.0 L x 266.65 K)/(291.15 K x 175.0 L)

P2 = 536.8 mmHg

Therefore, the new pressure of the gas is 536.8 mmHg.

To know more about Combined Gas Law Equation,

Answer:

Biology

Explanation:

Biology is the study of all living beings. From the smallest algae or micro organism to the biggest living being is all covered under biology. How micro organisms live, how do they function and how they affect other living beings is studied in biology.

Answer:

Micro bioligist

Explanation: hope this helps

Converting ounces to grams

16 oz (In a pound) * 28.35= 453.6

The pound is the official currency of the United Kingdom and related territories. [4] The pound (symbol: £) is the principal unit of sterling and can be referred to by the compound noun [b] pound sterling or the term British pound, neither of which is the official name of the currency itself. One pound is divided into 100 pence (singular: "penny", abbreviation: "p").

The pound is the unit of currency used in Great Britain. This is represented by the £ symbol. The British pound is divided into 100 pence. Other countries, such as Egypt, also have a currency unit called the pound. A cup of coffee costs £2. A pound is defined as the base unit of weight in the foot-pound-second (F.P.S) system and is equivalent to 16 ounces. An example of pounds is a man who weighs 186 pounds. An example of 1 lb is to buy 3 lbs of lemons. noun. Pound means to strike with force.

Learn more about pound here

https://brainly.com/question/26923735

#SPJ4