Do electromagnetic waves transfer energy without yes?.

Lewis symbols, also known as Lewis symbols, are used to represent the electrons as dots. Two electrons from the Mg atom are given up to create the magnesium ion or Mg2+.

Mg's electronic configuration can be described as 1s2 2s2 2p6 3s2, while Mg2+'s is discovered to be 1s2 2s2 2p6.

Element number twelve is magnesium. To create the Lewis electron dot diagram, visualize the symbol for magnesium in a box with all of its core electrons. Then, we arrange the valence electrons so that each side of the box corresponds to an orbital in the highest energy level.

Learn more about magnesium here;

https://brainly.com/question/9139258

#SPJ4

The following statements is incorrect :  If, at a given temperature, the solubility of a certain compound is 56 grams per 100 milliliters of water, a solution having a concentration of 46 grams per 100 milliliters at the same temperature is supersaturated.

The supersaturated solution is the solution that contain more solute than required for the saturated solution. so, the third option is incorrect.

Thus, The following statements is incorrect :  If, at a given temperature, the solubility of a certain compound is 56 grams per 100 milliliters of water, a solution having a concentration of 46 grams per 100 milliliters at the same temperature is supersaturated.

To learn  more about supersaturated here

https://brainly.com/question/16817894

#SPJ4

The pH of the mixture is 5.29. Determine the pKa of the weak acid is 5.58

A weak acid is an acid that partially dissociates into its ions in an aqueous solution or water. In assessment, a robust acid absolutely dissociates into its ions in water. The conjugate base of a weak acid is a vulnerable base, at the same time as the conjugate acid of a weak base is a susceptible acid.

47.51 ml of 0.0903 M KOH = 0.04751 L × 0.0903 mol/L

                                            = 4.290 × 10 ⁻³ mole

∴ A number of the of weak acids = 4.29  × 10 ⁻³ mole

as one mole of KOH neutralizes the one-mole weak acid

∴ The molar mass of weak acid = mass/mole

                                             = 0.100 g / 4.29 × 10⁻³

                                             = 23.31 g/mol

15.99 ml of 0.0903 M KOH = 0.01599L × 0.0903 mol/L

                                            = 1.44 × 10⁻³

Thus after addition of KOH

mole of salt = 1.44 × 10⁻³

A mole of acid = 4.29  × 10⁻³ -  1.44 × 10⁻³

mole of acid = 2.85 × 10⁻³

Henderson equation

pH = PKa + log(salt)/(acid)

5.29 = PKa + log (1.44 × 10⁻³)/(2.85 × 10⁻³)

5.29 = PKa + (-0.296)

PKa = 5.58

Learn more about weak acid here:-https://brainly.com/question/24018697

#SPJ4

Oxygen Hydrofluoric Acid Nitric Oxide All of these compounds are polyatomic.

Three or more atoms form stable structures to form polyatomic molecules (bound state). The molecular formula, which reveals the precise number of constituent atoms, serves as a means of distinguishing different compounds.

Only a few of the periodic table's elements have a second letter that is lowercase after their capital initial. As a result, you will recognize a polyatomic ion if it contains two capital letters together. Two diatomic gases, nitrogen and oxygen, make up its major constituents.

To know more about polyatomic visit:-

https://brainly.com/question/25055220

#SPJ4

The supreme court decision is: Tinker v. Des Moines Independent Community School District (1969).

The landmark Supreme Court case of Tinker v. Des Moines Independent Community School District (1969) was monumental in its decision to protect freedom of expression. This case involved several Iowa high school students, who were suspended from school for wearing armbands as a form of protest against the Vietnam War. The students took their case to court, arguing that their right to free expression was violated by the school district. The court ultimately sided with the students, ruling that “students do not shed their constitutional rights to freedom of speech or expression at the schoolhouse gate”.

This ruling was the first time that the Supreme Court had addressed the issue of student expression in public schools. The ruling established the precedent that students are protected by the First Amendment in public schools, and that school administrators must have a valid reason to restrict student speech. This ruling was also important in protecting the rights of students to express their opinions in a peaceful manner. In addition, the case highlighted the importance of individual expression and the power of students to challenge the status quo.

Which of the following supreme court decisions allows public school students to wear t-shirts protesting a school board decision that eliminates funding for high school arts programs?

Learn more about the supreme court decisions:

https://brainly.com/question/25903338

#SPJ4

Fe2O3 must be added to the equation in front of Fe to make it balanced. 4 Fe + 3 O₂ → 2 Fe₂O₃

In order to make a chemical equation equal in both reactants and products, add coefficients where necessary in front of the symbols or formulations.

Multiply coefficients (the numbers in front of the formulas) by the formulas themselves to equalize the amount of atoms of each element on both sides of the equation. The atoms that are easiest to balance are those of oxygen and hydrogen. After designating the states of matter for the reactants and products, review your work.

4 Fe + 3 O₂ → 2 Fe₂O₃

On the left side, there are 4 Fe atoms and 6 O atoms.

On the right side, there are 4 Fe atoms and 6 O atoms.

To know more about chemical equation visit:-

https://brainly.com/question/28294176

#SPJ4

The volume of ideal gas will be decreased if the pressure increase while the temperature remain constant

To determine the effect of increasing pressure of ideal gas, we can use the equation available for ideal gas.

Ideal gas equation state as below:

PV=nRT ⇒ V = nRT/P
Where,
P = Pressure
V = Volume
n = mole
R = Ideal gas constant

T = Temperature

Based on above equation, we can conclude if the pressure increase and the temperature remain constant, the volume of the system will be decreased. Therefore, if the pressure decrease while the temperature remain constant, the volume will be increasing.

Learn more about ideal gas here: https://brainly.com/question/28257995

#SPJ4

According to the given statement that is binding A price ceiling above equilibrium.

When a response and its opposite reaction move forward at the same pace, chemical equilibrium is reached. Both the advance and the reverse reactions take place as a system gets closer to equilibrium. The forward and backward reverse reactions are moving at the same speed when the system is in equilibrium.

In the study of chemical reactions, equilibrium is crucial because it provides information about the reaction's direction. Equilibrium enables us to regulate the parameters of the reaction to favor the production of desired products. Calculating the composition of the final reaction mixture also makes use of it.

To know more about Equilibrium visit:

https://brainly.com/question/7151349

#SPJ4

Explanation:

0.5×0.8=(3.0×4.0) × 160

The relative atomic mass of lithium can be calculated by the average weighted of masses of the Isotopes of lithium relative to the mass of lithium.

Relative atomic mass of an element is given in the periodic table. It is also called relative atomic weight. The relative atomic mass of an element is the weighted average of the masses of the isotopes in the naturally occurring element relative to the mass of an atom.

We can estimate the the relative atomic mass or the atomic weight of an element E with the naturally occurring isotopes and with the respective abundances of A%, B%, C% and like that.

relative atomic mass =( A /100× a)+ ( B / 100× b) + ( C/100 × c).... and so on

lithium has two isotopes. one is lithium-6 and other is lithium-7 . so we can calculate the relative atomic mass by using Isotopes of lithium.

To know more about the Relative Atomic mass please visit:

https://brainly.com/question/5661976

#SPJ4

The reaction rate would be approximately 8.3 times faster than at 323K

By the Arrhenius Equation

Ea/R (1/T1 -1/T2) = ln(k1/k2) The equation can also be expressed in numerous ways, and they are all valid.

NOTE: R = 8.314 J/K-mol, thus we'll convert Ea to joules as well (42,200 J/mol) as it contains joules (J) as a unit.

Even if we don't know k1 or k2, all we need to do is calculate the ratio, which should reveal the speed of the reaction at the two different temperatures. Setting k1 = 1 at random, we can solve for k2 by setting T2 = 343K and T1 = 323K.

ln(1/k2) = -42,200/8.314 (1/323 - 1/343)

ln 1 - ln k2 = -5076 (0.003096 - 0.002915)

-ln k2 = -5076 (0.0001810) = -0.9188

k2 = 8.29

Therefore, at 343K, the reaction rate would be approximately 8.3 times faster than at 323K.

Know more about  Arrhenius equation at:

https://brainly.com/question/13467424

#SPJ4

Yes chemical Sanitizers can usually function properly in temperatures between 75°F and 120°F. Some metal objects may corrode when exposed to chlorine compounds at higher temperatures.

The temperature of chemical Sanitizers solutions should be at least 75°F. At lower temperatures, they are less effective. Chlorine can evaporate from a solution and cause some metals to corrode at temperatures above 120°F. Generally, temperatures between 75° and 120°F are ideal for all sanitizers. In environments with high temperatures and low humidity, products that require prolonged contact times may evaporate before disinfection is achieved. Because of this, disinfection cannot be accomplished with a single application. The water needs to be warm enough to increase the activity of the solution but not so warm that it speeds up sanitizer evaporation. Sanitizers can usually function properly in temperatures between 75°F and 120°F. Some metal objects may corrode when exposed to chlorine compounds at higher temperatures.

Learn more about chemical Sanitizers here:

https://brainly.com/question/10984330

#SPJ4

sodium is combined with sulfur to produce sodium sulfide, the charge of a sodium atom after it bonds with a sulfur atom is +1

Electric charge, a conserved feature of some subatomic particles that govern their electromagnetic interaction, is the type of charge that is often discussed. The charge is a physical attribute that causes matter in an electromagnetic field to experience a force. Protons and electrons are two charged particles, protons carry a positive charge and electrons carry a negative charge.

In Sodium sulfide (Na₂S) two Na atom are present and one sulfur atom is present, here each sodium atom (Na) carry +1 charge and one sulfur atom (S) carry (-2) charge. So, the charge of a sodium atom after it bonds with a sulfur atom is +1

To know more about charge refer to:

https://brainly.com/question/18102056

#SPJ1

The Ka value of an equilibrium established between the ammonium ion and ammonia is 1.73 * 10⁻⁵.

The equilibrium equation of the reaction between hydrogen ions and ammonia to give ammonium ions is as follows:

NH₃ (g) + H⁺ (aq) ⇄ NH₄⁺ (aq)

The base dissociation dissociation constant, Kb of the reaction is given below:

At equilibrium;

[H⁺] = [NH₃]

[H⁺] = 1.7 * 10⁻⁵ M

[NH₃] = 1.7 * 10⁻⁵ M

[NH₄⁺] = 0.50 M

Kb = 0.50 / (1.7 * 10⁻⁵ * 1.7 * 10⁻⁵)

Kb = 1.73 * 10⁹

pKb = - log Kb

pKb = -log (1.73 * 10⁹)

pKb = 9.24

Also;

The acid dissociation constant, Ka, is elated to the Kb as follows:

pKa + pKb = 14

Hence;

pKa = 14 - pKb

pKa = 14 - 9.24

pKa = 4.76

[tex]Ka = 10^{-4.76}[/tex]

Ka = 1.73 * 10⁻⁵

Learn more about Ka and Kb at: https://brainly.com/question/3638630

#SPJ1

The two starting materials to obtain the given target molecule are NaOH and the method of oxymercuration-demercuration.

Retrosynthesis

The process of “deconstructing” a target is known as Retrosynthesis. A molecule into readily available starting materials by means of. - imaginary breaking of bonds (disconnections) and by the conversion of one functional group into another (functional group interconversions).

The reaction are given in the image.

Learn more about retrosynthesis from the link given below.

https://brainly.com/question/26388782

#SPJ4

It is a single value calculated from a sample to estimate a population when determining a sample size for a study.

the number N divided by the total number of observations in the sample. The sample mean, ("mu") one of the two factors defining the normal distribution, is an estimation of the population mean (the other is , see below)

The mean or average of all values within a population is known as the population mean. It is determined using the population's total values, represented by the sum of X divided by the total number of population values, represented by N.

This method of estimation is called the Lincoln Index.

P = (N1 x N2)/ R.

P = total size of population.

N1 = size of first sample (all marked)

N2 = size of second sample (recapture: some will be marked, some won't)

R = number of marked individuals recaptured in second sample

To know more about Population visit:

https://brainly.com/question/13428382

#SPJ4

The different types of reduction are : chemical reduction , Auto reduction, Electrolytic reduction.

The different types of reductions are :

Chemical reduction : it involves the transfer of the electrons between the species in the chemical reaction.

auto reduction : the method of the metal extraction is called as the auto reduction.

electrolytic reduction : it occurs when the electric current passes through the ionic solution causing the electrode to react the chemically. The substance is in a molten state or in the dissolved state. The material then decomposes and the reduction is called as the electrolytic reduction.

To learn more about reduction here

https://brainly.com/question/28813812

#SPJ4

Protein-protein interactions and effector molecule binding at steroid receptors; covalent modification and protein-protein interactions at CREB protein.

A molecule is the term used to describe the aggregate of atoms that results from the formation of covalent bonds. Therefore, we might claim that a monomer is the most basic component of a covalent composite. In nature, oxygen exists as a molecule. Dioxygen is created when two oxygen atoms make a covalent triple bond with one another.

Molecules are created when atoms come together. 2 hydrogen (H) atoms one and oxygen (O) atom make up the three atoms that make up a water molecule. Because of this, water is occasionally abbreviated as H2O. There are billions of hydrogen atoms in an one drop of liquid.

To know more about Molecule visit:

https://brainly.com/question/28238455

#SPJ4

The ideal gas law (PV = nRT), from which both of the gas equilibrium constants are derived, relates them to the equilibrium (K). As we've seen above, Kp = Kc (RT)n is a formula that can be derived from the Ideal Gas Law.

Gas equilibrium constants are typically expressed as follows:

aA + bB ⇌ cC + dD

Kc=[C]c[D]d/[A]a[B]b

Kp=(C)c(D)d/(A)a(B)b

Thermochemical Decomposition of NH4SH, as an example

Think about how NH4SH(s) thermally breaks down:

NH4SH(s)⇌NH3(g)+H2S(g)

Associated with Ksp is also this

Kc=[NH3][H2S]/[NH4SH]

NH4SH is a solid, however, so we obtain:

Kc=[NH3][H2S]/[1]

Kc=[NH3][H2S]

Similar to Kc, Kp uses parentheses () rather than brackets (), as follows:

Kp=(NH3)(H2S)/(NH4SH)

Kp=(NH3)(H2S)/(1)

Kp=(NH3)(H2S).

To Learn more About gas equilibrium refer to:

https://brainly.com/question/25736513

#SPJ4

The many moles of bromide ions are in 0.500 L of a 0.300 M solution of AlBr3  There is 0.45  mol of Br− withinside the solution.

Two measurements are required to decide the molarity of a solution, the mass of the solute, and the quantity of the solution. Mass isn't always within side the molarity equation, though. Moles of solute is split via way of means of the quantity of the solution.

The number moles of bromide ions are in 0.500 L of a 0.300 M solution of AlBr3 0.45 mol. The molarity depends upon concentration and the outer characters.

Read more about bromide :

https://brainly.com/question/3665055

#SPJ4

Oparin suggests that the first phase in the evolution of life was self-copying molecules in the primordial soup.

Oparin thought that coacervates, which are microscopic, spontaneously produced circular aggregates involving lipid molecules held together by electrical charges and which may have been the earliest forms of cells, were the source of life.

Oparin continued by elaborating on the method by which biomolecules will self-assemble into enormous liquid-like structures he referred to as "complex coacervates"—what we now refer to as hydrodynamic assemblies. He proposed that the development of these protocells was a crucial step in the emergence of life.

To know more about Oparin visit:

https://brainly.com/question/14763174

#SPJ4

The complete question is-

Which is the first step in the emergence of life propose by Oparin?

A. Self-copying molecules ate the primordial soup.

B. Lighting sparked chemical reactions among simple organic compounds in the primordial soup.

C. Molecules began copying themselves, using other molecules in the primordial soup as building blocks.

D. Photosynthesis supplied the oxygen necessary for self-copying molecules to thrive and form membranes.

The product formed are ammonia and 2,2-dimethylbutanoic acid. HCl is used in protonation of 2,2-dimethyl butane nitrile in the initial step.

It is the process by which nitrile combines with an acid, water, and to produce carboxylic acid. Protonation, nucleophilic addition, and proton transfer are all components of the chemical process. In this reaction, water serves as a nucleophile.

2,2-dimethyl butane nitrile can be protonated by HCl in the first step. The protonated aminoketone will result from the water's nucleophilic attack on protonated nitrile. The nucleophilic attack on carbonyl carbon in the following step will result in a proton yield with a protonated diol intermediate. In subsequent steps, this will eliminate ammonia and proton. Ammonia and 2,2-dimethylbutanoic acid is the end product.

To know more about carboxylic acid please click here https://brainly.com/question/26855500

#SPJ4

It is inappropriate that Ingestion of a toxic substance is the only way a poisoning can occur.

A poison can be any substance that is harmful to the body. It can be swallowed, inhaled, injected or absorbed through the skin. Poisoning is the harmful effect that occurs when too much of that substance has been taken. Poisoning is not to be confused with envenomation.

Acute poisoning is exposure to a poison on one occasion or during a short period of time. Symptoms develop in close relation to the degree of exposure. Absorption of a poison is necessary for systemic poisoning (that is, in the blood throughout the body)

To know more about Toxicity.

https://brainly.com/question/19603594

#SPJ4

The height of the mercury column increases if we increase the atmospheric pressure.

Well, we know that 1 atmosphere pressure will support a column of mercury that is 760mmhg .

There will only be 50 tons of air above your head if you ascend to, say, half the height of the atmosphere. As a result, the pressure has increased to 50000 pascal while the force has decreased to 50000 N.

As you can see, pressure has dropped as you've climbed higher. Now the mercury in the barometer experiences the same thing. On the ground, it is pushed with a force of, let's say, x, but halfway through the atmosphere, it will be pushed with a force of, let's say, x/2, and as a result, the barometer will rise less.

And thus the  mercury column, the mercury barometer, is an excellent means to monitor atmospheric pressure, or pressures lower than that of atmospheric pressure.

To know more about mercury column, please refer:

https://brainly.com/question/24068374

#SPJ4

The central atom in the icl4- ion has nonbonded electron pair(s) and bonded electron pair(s) in its valence shell is 2 and 4 respectively.

The central atom is generally the atom with the lowest subscript within the molecular system and the atom that may shape the maximum bonds. If all the atoms commonly shape an equally wide variety of bonds, the least electronegative atom is usually the critical atom.

A bonding electron is an electron concerned with chemical bonding. this could confer with: Chemical bond, a lasting appeal between atoms, ions, or molecules. A covalent bond or molecular bond is a sharing of electron pairs between atoms. A bonding molecular orbital is an attraction among the atomic orbitals of atoms in a molecule.

Learn more about electrons here; https://brainly.com/question/1287606

#SPJ4

2 grams of sodium hydroxide they should add to a 100ml volumetric flask to make the solution.

what is molecular mass?

The molar mass of a chemical compound is defined in chemistry as the mass of a sample of that compound divided by the quantity, or number of moles in that sample, measured in moles.

number of moles =mass/ molar  mass

molarity= 0.5

so, the number of moles= 0.5*100/1000=0.05

No of moles × molar mass= mass of NAOH

mass of NaOH= 0.05 ×40=2grams

To learn more about molecular mass https://brainly.com/question/837939

#SPJ4

Water is the best nucleophile.

To learn more about nucleophile refer,

https://brainly.com/question/14052597

#SPJ4

Rigor mortis occurs as the sarcoplasmic reticulum deteriorates, releasing calcium ions.

Rigor mortis is the phenomenon of stiffening of the body after death. It is one of the most important signs of death, caused by a change in the chemical balance(Ca+) of the muscles after death. This is the reason where the muscles become hard, making them difficult or impossible to move.

The blochemical cause of rigor mortis starts with the cessation of the pumping of calcium ions into the sarcoplasmic reticulum due to the absence of adenosine triphosphate (ATP) therefore the cytosolic concentration of this lon gradually increases.

Therefore, rigor mortis occurs as the sarcoplasmic reticulum deteriorates, releasing calcium ions.

It also contributes to the degradation of the reticulum terminal cistems and increase in the cytosolic calcium ion concentration Blood circulation ceases, and the oxygen transport and withdrawal of metabolism products. Enzyme systems continue to function after short duration only of the death. Thus, glycolysis continues in an anaerobic reaction and generates lactic acid, which is responsible for lowering the pH.

To learn more about rigor mortis visit the link- https://brainly.com/question/13554527

#SPJ4

Creation of a carboxyl group is essential for a rearrange to take place.

One or even more chemicals, also referred to as reactants, are transformed all into or so other substances, often referred to as product, in a chemical reaction. Materials are composed of chemical compounds or elements.

A chemical reaction occurs when one or more components change into one or more other substances. An illustration of this happens when steel and oxygen combine to make rust. When vino and fizzy coke are combined, sodium chloride, oxide, and liquid are created. burning or exploding objects

To know more about reaction visit:

https://brainly.com/question/28984750

#SPJ4

0.012 moles of Nickel sulfate (niso4) in 4 ml of a 3 m solution of Nickel sulfate.

Molarity= moles/volume

M=n/V

Remember the units of molarity are mol/L.

We rearrange for n=M*V

= 3 mol/L*(4*10^-3L)

Liters cancel out and we are left with 4*10^-3 mol of NiSO4

= 4*10^-3 mol

= 0.012 moles

0.012 moles of niso4 are in 4 ml of a 3 m solution of niso4

To learn more about Nickel sulfate refer :

https://brainly.com/question/18800910

#SPJ4