What is the molarity of a solution made by dissolving 26. 42 g of (nh4) 2 so4 in enough water to make 50 ml of solution?.

Small volumes of solvents are used to rinse the solid product in the recrystallization procedure in order to remove impurities.

In the recrystallization procedure, small volumes of solvents are used to rinse the solid product to remove impurities. This is done to prevent the loss of the desired product, as larger volumes of solvent can cause the product to dissolve and be lost.

The small volume of solvent is also important for effective removal of impurities, as it allows for better control of the washing process and ensures that impurities are washed away without dissolving the product.

Thus, keeping the volume of rinses small is a key step in obtaining a pure, high-quality product in the recrystallization procedure.

More on the recrystallization procedure can be found here: https://brainly.com/question/29222331

#SPJ1

Compound A is antiaromatic, Compound B is aromatic, Compound C is nonaromatic, and Compound D is aromatic.

Aromaticity is a property of certain cyclic, planar molecules that exhibit unusual stability due to their delocalized pi electrons. These molecules must meet certain criteria, such as being cyclic, planar, fully conjugated, and obeying Hückel's rule. If a molecule meets these criteria and has 4n + 2 pi electrons, it is considered aromatic. If it has 4n pi electrons, it is antiaromatic.

In Compound A, the molecule is a planar, fully conjugated ring of six pi electrons, which is not a multiple of 4. This makes it antiaromatic. Compound B, on the other hand, is a planar, fully conjugated ring of six pi electrons, which does meet Hückel's rule and has 4n + 2 pi electrons, making it aromatic. Compound C is a planar molecule that does not meet the criteria for aromaticity, so it is nonaromatic. Compound D is a planar, fully conjugated ring of 10 pi electrons, which meets Hückel's rule and has 4n + 2 pi electrons, making it aromatic.

Learn more about Hückel's rule

brainly.com/question/29497803

#SPJ4

BaCl₂ + Na₂(SO4)→ Ba(SO4) + 2NaCl the type of chemical reaction is taking place in this equation is double replacement reaction. Therefore, option 2 is correct.

The double replacement reaction is also called as double displacement reaction.

A general formula for a double replacement reaction is written as follows: AB + CD ⇒ AD + BC.

Examples of double replacement reactions are sodium hydroxide reacts with ammonium chloride to produced sodium chloride, ammonium hydroxide. NaOH + NH₄Cl ⇒ NaCl + NH₄OH.

When barium chloride solution reacts with sodium sulphate solution, a white precipitate of barium sulphate and sodium chloride are produced. This is double replacement reaction.

Thus, option 2 is correct.

To learn more about the double replacement reaction, follow the link;

https://brainly.com/question/19267538

#SPJ9

To find the molarity of a solution of hydrochloric acid, you need to know the number of moles of solute (HCl) present in a certain volume of solution.

First, we can calculate the molar mass of the HCl solution:

32.0% HCl * (36.46 g/mol HCl + 1.01 g/mol H₂O) = 11.66 g/100 ml

Next, we can use the density of the solution and the molar mass to calculate the moles of HCl present in 1 liter of solution:

1 L = 1000 ml

11.66 g/100 ml x 10 = 116.6 g/L

116.6 g / 36.46 g/mol = 3.20 moles/L

So the molarity of the solution is 3.20 M HCl.

Want to know more about molarity visit the link which is given below;

https://brainly.com/question/8732513

#SPJ4

Answer:

?

Explanation:

Stable Lewis Structure of NO3

True, the kinetic molecular theory of gases describes the behavior of gas particles as having constant random motion and perfectly elastic collisions between particles.

What is Collision?

In the context of physics and chemistry, a collision is an event in which two or more objects come into contact with each other and exchange energy, momentum, or other physical quantities. Collisions can occur between particles of different types, such as between atoms or molecules, or between macroscopic objects, such as between cars in a collision.

In kinetic theory, the concept of collision is central to understanding the behavior of gas particles. Gas particles are in constant motion and collide with each other and with the walls of their container. The frequency and force of these collisions determine the pressure of the gas.

Collisions can be classified as elastic or inelastic, depending on whether the total kinetic energy of the colliding objects is conserved. In an elastic collision, the total kinetic energy of the objects is conserved, while in an inelastic collision, some of the kinetic energy is converted to other forms, such as heat or deformation. Collisions can also be classified as head-on or oblique, depending on the angle of collision between the objects.

The theory also states that gas particles have negligible volume and do not attract or repel one another. These assumptions help to explain many of the macroscopic properties of gases, such as pressure, temperature, and volume.

Learn more about Collision from given link

https://brainly.com/question/24915434

#SPJ4

During the process of glycolysis, the potential chemical energy released by the breakdown of glucose is stored in the form of ATP (adenosine triphosphate).

Glycolysis is a metabolic pathway that takes place in the cytoplasm of cells and involves the breakdown of glucose into two molecules of pyruvate. This process generates a small amount of ATP directly, but its primary function is to generate energy-rich compounds such as NADH and ATP that can be used in other metabolic pathways, such as cellular respiration.

The NADH and ATP generated during glycolysis carry the potential chemical energy released by the breakdown of glucose and can be used by the cell to perform various cellular functions, such as muscle contraction, active transport, and synthesis of biomolecules.

To know more about glycolysis here

https://brainly.com/question/14076989

#SPJ4

Large sand and gravel formations often comprise silicate minerals in the sand.

The loose substance known as gravel, commonly referred to as crushed stone, is mostly composed of rock pieces. Basalt, dolomite, and sandstone are the most frequent forms of bedrock found in gravel.

Gravel that is around this size is good for driveways or walkways. The stones must be smooth and easy to walk across with little effort. Pick gravel that is angular and won't move around much. The best gravel for walkways is 10mm or 14mm.

To know more about Gravel visit:

https://brainly.com/question/20741309

#SPJ4

The complete question is-

Sand found in commercial sand and gravel deposits is typically composed of _______.

The two common methods used to specify experimental uncertainty are Absolute uncertainty, Relative uncertainty.

Absolute uncertainty is the estimated maximum error or deviation from the true value of a measured quantity. The absolute uncertainty is usually expressed as a single value or a range of values and is usually reported as the standard deviation or the standard error of the mean.

Relative uncertainty is the ratio of the absolute uncertainty to the measured value, expressed as a percentage. The relative uncertainty is used to describe the precision of a measurement relative to the size of the measurement.

These methods are used to describe the accuracy and precision of experimental measurements, and they are useful in determining the degree of confidence that can be placed in the results of an experiment.

To learn more about Absolute uncertainty :

https://brainly.com/question/24121107

#SPJ4

A weak acid as well as its corresponding base make up a buffered solution. The ions are represented by violet, grey, and green spheres, respectively.  The first system represents the buffer.

A buffer is indeed a solution that resists pH fluctuations and contains either one weak acid as well as its salt or even a weak base as well as its salt. To put it another way, a buffer is indeed an aqueous solution that includes a weak base as well as its conjugate acid, or a weak acid as well as its conjugate base.

A buffer may also be referred to as a buffer solution, hydrogen ion buffer, and pH buffer. A weak acid as well as its corresponding base make up a buffered solution. The ions are represented by violet, grey, and green spheres, respectively.  The first system represents the buffer.

Therefore, the first system represents the buffer.

To know more about buffer, here:

https://brainly.com/question/29763040

#SPJ1

Hydrogen fluoride (HF) can be described as a very polar molecule

Polar: A polar covalent bond is created when atoms with different electronegativities share electrons to form a covalent bond. Polar bonds have a high melting point, low vapour pressure, high surface tension, and low boiling point. Polar substances interact with one another. On opposite ends of these molecules, there are positive and negative charges. They have electrical charge as a result. Examples include alcohol and sulfur.

Nonpolar: A non-polar covalent bond, a type of chemical bond, is produced when two atoms share electrons equally. Nonpolar bonds have high vapour pressure, low surface tension, low boiling points, and low melting points. Nonpolar molecules have no profusion of charges at their opposite ends and do not interact with other nonpolar molecules. Examples include pentane and carbon dioxide.

know more about polar and non polar click here;

https://brainly.com/question/29206689

#SPJ4

At the end of the experiment the temperature increase due to increase in the average kinetic energy of the pentane molecules.

Pentane is an organic compound with the formula C₅H₁₂ - that is, an alkane with five carbon atoms.

Given is to understand why the temperature increase at the of the experiment.

At the end of the experiment the temperature increase due to increase in the average kinetic energy of the pentane molecules.

Therefore, at the end of the experiment the temperature increase due to increase in the average kinetic energy of the pentane molecules.

To solve more questions on  electrostatic energy scaling,  visit the link-

brainly.com/question/29014197

#SPJ1

Answer:

Ultraviolet is the answer im pretty sure.

Explanation:

ultraviolet light are more energetic than visible light, and infrared, microwaves, and radio waves, are less energetic than the light in the visible spectrum.

The value of the equilibrium constant, Kc, for the reaction H2(g) + I2(g) ⇔ 2HI (g) at 448°C is 50.5.

The equilibrium equation describes the static or dynamic equilibrium of all internal and external forces of the system. In the static case, the equilibrium equation is. [6.23] K · u = F. where K is the stiffness matrix of the system, u is the vector with the nodal displacements and F represents the external forces

A chemical reaction is in equilibrium when there is no tendency for the quantities of reactants and products to change. The direction in which we write a chemical reaction (and thus which components are considered reactants and which are products) is arbitrary.

To know more about equilibrium visit

https://brainly.com/question/30694482

#SPJ1

NaOH contains an electrolyte consisting of a base. All soluble salts, acids, as well as bases dissolved inside a polar solvent.

An electrolyte is a material containing ions that conducts electricity through the motion of those ions but does not conduct electrons. All soluble salts, acids, as well as bases dissolved inside a polar solvent, including such water, fall into this category.

When the material dissolves, it splits into cations and anions which spread evenly throughout the solvent. There are other solid-state electrolytes. The term electrolyte describes the substance that's also dissolved in medicine and occasionally in chemistry. NaOH contains an electrolyte consisting of a base.

Therefore, NaOH contains an electrolyte consisting of a base.

To learn more about electrolyte, here:;

https://brainly.com/question/28699046

#SPJ9

"Lysine and arginine are acidic amino acids" is the right answer.

The building blocks of proteins, known as amino acids, are carbon, hydrogen, oxygen, nitrogen, and, occasionally, sulphur.

A carboxyl group and one amine group are both present in the amino acids. They are a zwitterion and are amphoteric.

based on the family of amino acids, which can be further classified into a number of different categories, such as simple amino acids and amino acids containing sulphur.

The amino acids that have sulphur atoms and side-by-side chains are those that contain sulphur. Basic amino acids like arginine and lysine have a side chain that is an NH2 basic group.

Therefore, the correct answer is option D) Lysine and arginine are acidic amino acids.

To learn more about amino acids refer to;

https://brainly.com/question/28362783

#SPJ4

If  1.85 moles of Br2 are put in a 0.730−L flask, 2.00 percent of the Br2 undergoes dissociation. the equilibrium constant Kc for the reaction is: 9.84 M.

The first step is to determine the initial concentration of Br2:

[Br2] = number of moles / volume in liters = 1.85 mol / 0.730 L = 2.534 M

Next, we need to determine the change in concentration of Br2 due to dissociation:

Δ[Br2] = -2x, where x is the extent of dissociation in moles

Since 2.00% of Br2 dissociates, we know that x = 0.0200(1.85 mol) = 0.0370 mol

Therefore, Δ[Br2] = -2(0.0370 mol) = -0.0740 M

The equilibrium concentration of Br2 is then:

[Br2]eq = [Br2]initial + Δ[Br2] = 2.534 M - 0.0740 M = 2.460 M

The equilibrium concentration of Br is twice the equilibrium concentration of Br2 (based on the balanced chemical equation):

[Br]eq = 2[Br2]eq = 2(2.460 M) = 4.920 M

Finally, we can calculate the equilibrium constant Kc using the equilibrium concentrations:

Kc = [Br]eq^2 / [Br2]eq = (4.920 M)^2 / 2.460 M = 9.84 M

Therefore, the equilibrium constant Kc for the reaction Br2(g) ⇆ 2Br(g) is 9.84 M.

Learn more about  equilibrium constant Kc for the reaction here:https://brainly.com/question/12270624

#SPJ1

This ranking is based on the electromagnetic spectrum, which describes the different types of radiation in order of their wavelength and frequency. As the wavelength decreases, the frequency and energy of the radiation increases. Gamma rays have the highest energy and shortest wavelength, while radio waves have the lowest energy and longest wavelength.

What is Radiation?

Radiation refers to the energy that travels through space or matter in the form of electromagnetic waves or particles. There are several types of radiation, including electromagnetic radiation, such as radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays, as well as particle radiation.

Electromagnetic radiation is characterized by its wavelength and frequency, which determines its energy and the type of radiation.

Here is the correct ranking of the types of radiation in order of their energy, from least to greatest:

Red (FM-Radio-AM): Longest wavelength/lowest energy

Orange (Microwave)

Yellow (Infrared)

Rainbow (Visible light)

Blue/green (Ultraviolet)

Blue (X-rays)

Purple (Gamma rays): Shortest wavelength/greatest energy

Learn more about Radiation from given link

https://brainly.com/question/893656

#SPJ4

Pitt inorganic chemistry refers to the study of inorganic chemistry at the University of Pittsburgh.

Inorganic chemistry is a branch of chemistry that deals with the study of inorganic compounds and their reactions. It is concerned with the properties and behavior of inorganic compounds, which are compounds that do not contain carbon-hydrogen bonds, such as metals, salts, and minerals.

The Department of Chemistry at the University of Pittsburgh offers courses and research opportunities in the field of inorganic chemistry, including the synthesis and characterization of inorganic compounds, the study of their properties and reactivity, and the development of new materials and catalysts.

Inorganic chemistry is an important field of study because it helps us to understand the properties and behavior of a wide range of compounds that are essential for many industrial processes, such as the production of metals, ceramics, and semiconductors. It is also important for the development of new materials and technologies, such as batteries, fuel cells, and solar cells.

To know more about chemistry here:

https://brainly.com/question/30329146#

#SPJ11

The gravitational potential energy in a 100-kg diver, at 10-m, is 9800 J.

The gravitational potential energy of an object is calculated by using the formula:
Pe = mgh

Where PE is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object above the ground.

Given that the mass of the diver is 100 kg and the height of the platform is 10 m, we can plug these values into the formula to find the potential energy:
PE = (100 kg)(9.8 m/s²)(10 m)
PE = 9800 J

Therefore, the gravitational potential energy of the 100-kg diver on the 10-m platform is 9800 J.

See more about gravitational potential energy at https://brainly.com/question/15896499.

#SPJ11

A substance which has both polar and non-polar portions of the molecule is likely to have some tendency to dissolve in both polar and non-polar solvents is true statement.

It is true that a substance with polar and non-polar parts of its molecules would probably have some potential to dissolve in both polar and non-polar solvents. Amphiphilic or amphipathic refers to a chemical that has both polar and non-polar parts of the molecule.

Detergents, which can dissolve both polar and non-polar compounds, and phospholipids, which make up a significant portion of cell membranes, are two examples of amphiphilic molecules.

Molecules that possess both polar and non-polar areas are said to be amphiphilic. They are helpful in a range of biological and chemical processes because they can interact with both polar and non-polar molecules.

Learn more about amphipathic here:

brainly.com/question/30431914

#SPJ4

Answer:

The shapes of continents fit together like a puzzle.

Explanation:

Just look at the east coast of South America and the west coast of Africa—it's almost a perfect fit! Identical rocks have been found on different continents. These rocks formed millions of years ago before the continents separated.

Because they include a lot of iron and magnesium, light silicates have a lower specific gravity than dark silicates, which have a greater specific gravity.

This difference is mostly caused by the amounts of iron and magnesium that are present; light silicates have significantly less iron and magnesium and, in comparison to dark silicates, comparatively more potassium, aluminium, and sodium.

Because they include a lot of iron and magnesium, light silicates have a lower specific gravity than dark silicates, which have a greater specific gravity.

To know more about magnesium visit:-

https://brainly.com/question/1533548

#SPJ1

Answer:

G

Explanation:

Oxygen is most likely to be found in the atmosphere because it is the most abundant element in Earth’s atmosphere.

The intermolecular force of attraction between a charge ion (cation or anion) and a molecule is known as an ion-dipole interaction.

It frequently appears in the mixture formed when polar solvents dissolve ionic compounds. As the charge on the ion or the size of the dipole of the polar molecule increases, ion-dipole attractions become stronger.

The partially negative end of a neutral polar molecule can be attracted by cations, which are positively charged species. The partially positive end of a neutral polar molecule can be attracted by anion, a species with a negative charge. You can see how these would bond together because ions have charges on either their positive or negative sides, just like dipole molecules do. It would draw cations to the

know more about ion dipole interactions click here

https://brainly.com/question/7206824

#SPJ4

Sodium nitride (Na₃N) is an ionic compound that is formed when sodium (Na) reacts with nitrogen (N) under appropriate conditions.

Sodium has a valency of +1, meaning it can donate one electron to form a cation with a charge of +1. Nitrogen has a valency of -3, meaning it can accept three electrons to form an anion with a charge of -3.

In order to form a stable compound, three sodium cations are needed to balance the charge of one nitride anion. This results in the chemical formula Na₃N, where the subscript 3 indicates that there are three sodium atoms for every one nitrogen atom in the compound.

The ionic bond between sodium and nitrogen in Na₃N results from the electrostatic attraction between the positively charged sodium ions and the negatively charged nitride ions.

To know more about Sodium nitride here

https://brainly.com/question/2596742

#SPJ4

Answer:

water freezes at 32 degrees Fahrenheit (0 degrees Celsius)

Explanation:

Anticholinesterases will increase the usual time of acetylcholine in the synapse. Rebinding can then connect the transmitter to nicotinic receptors. It allows acetylcholine the stronger advantage over the neuromuscular blocking agent.