Which of the following substituents has the highest priority according to the Cahn-Ingold-Prelog system used in assigning R and S configurations?
a.−COOH
b.−CHO
c.−CH2OH
d.−CH3

Answer:

a) Melting: An example of melting in everyday life is when an ice cube placed on a warm surface starts to melt and turns into liquid water. Melting is the process in which a solid substance absorbs enough heat energy to transition into a liquid state. The heat energy breaks the bonds holding the particles of the solid together, causing them to gain enough kinetic energy to move more freely and transition to a liquid form.

b) Freezing: Freezing can be observed when water is placed in a freezer and transforms into ice. Freezing is the reverse process of melting. It occurs when a liquid substance loses heat energy and its particles slow down, leading to the formation of a solid structure. The decrease in temperature causes the particles to arrange themselves into an organized pattern, creating a solid state.

c) Condensation: When you see water droplets forming on the surface of a cold beverage on a hot day, that is an example of condensation. Condensation is the process by which a gas or vapor cools down and transforms into a liquid state. It happens when the temperature of the gas or vapor reaches a point where its particles lose enough energy to come together and form liquid droplets.

d) Evaporation: When wet clothes or a puddle of water dries up after exposure to sunlight or air, it is an example of evaporation. Evaporation is the process by which a liquid substance, such as water, turns into a gas or vapor. It occurs when the particles near the surface of the liquid gain enough energy from the surroundings to break free from the liquid phase and enter the gaseous phase.

e) Sublimation: An example of sublimation is the direct conversion of solid dry ice (frozen carbon dioxide) into a gas without passing through a liquid phase. Sublimation is the process in which a solid substance transforms directly into a gas without going through the intermediate liquid phase. It occurs when the substance absorbs enough heat energy to break the bonds between its particles, causing them to transition from a solid state to a gaseous state.

Explanation:

The likely mechanism if the given aromatic molecule is subjected to these reaction conditions is an addition-elimination mechanism using electrophilic aromatic substitution.

Here, correct answer is A. An addition-elimination mechanism using electrophilic aromatic substitution.

Electrophilic aromatic substitution is a type of chemical reaction in which an electron-deficient species, such as a Lewis acid, replaces a hydrogen atom on an aromatic ring. During this process, an electron-rich species, such as a Lewis base, acts as a nucleophile and attacks the electrophile, resulting in an addition-elimination reaction.

This type of mechanism involves the formation of a new bond between the electrophile and the aromatic ring, followed by the removal of a proton from the aromatic ring. This process results in the formation of a new compound with the same aromatic ring structure but with a different substituent attached.

know more about aromatic molecule here

https://brainly.com/question/3614247#

#SPJ11

It should be noted that the element in group 10 and period 5 is Palladium.

The Palladium  which is a chemical element with the symbol Pd and it posses an atomic number 46.

It found in group 10 and period 5 and  a rare and lustrous silvery-white metal discovered by chemist William Hyde Wollaston.

Learn more about Palladium at:

https://brainly.com/question/25605883

Answer:

water

Explanation:

liquid don't have any shear strength and so a shear wave cannot propagate through a liquid.

Answer:

A

Explanation:

the sun gives energy to the grass to grow then the animal eats the grass and gets the energy and then the decomposer or mushroom will break it down for food.

Answer:

no, there was not a chemical reaction

Taking into account the reaction stoichiometry, 2.03 moles of C₂H₆ are required if 7.12 mol of ethane (C2H6) undergoes combustion.

The balanced reaction is:

2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

It is possible to use a simple rule of three as follows: If by reaction stoichiometry 7 moles of O₂ react with 2 moles of C₂H₆, 7.12 moles of O₂ react with how many moles of C₂H₆?

moles of C₂H₆= (7.12 moles of O₂× 2 moles of C₂H₆)÷7 moles of O₂

moles of C₂H₆= 2.03 moles

Finally, 2.03 moles of C₂H₆ are required.

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

#SPJ1

To solve this problem, let's use the definition for molarity:

Replacing the values of the problem:

Now, to find the mass, we multiply by the molecular weight of NaCl. (Which is about 58.44g/mol)

The answer is approximately 22.2g of NaCl

Answer:

In the United States today, no federal law prohibits human cloning, either for purposes of reproduction or for purposes of biomedical research.

Explanation:

Answer:

The Conservation area is the pay way to the special architectural and historic interest  these are special character.

Explanation:

Conservation area is the features of building and use that historical development to contribute to its special character material and style.

Hund's rule: orbitals of identical strength are every occupied via way of means of one electron earlier than any orbital is occupied via way of means of a 2nd electron, and all electrons in singly occupied orbitals ought to have the equal spin. 

Orbitals shaped via way of means of blending of various orbitals are referred to as hybrid orbitals. Orbitals containing valence electrons are referred to as valence or valence shell orbitals.

Redistribution of the strength of orbitals of character atoms to present orbitals of equal strength occurs while  atomic orbitals integrate to shape a hybrid orbital in a molecule. This procedure is referred to as hybridization.

Orbitals which have the equal or same strength tiers are cited as degenerate. Hybrid orbitals are the end result of a version which mixes atomic orbitals on a unmarried atom in methods that result in a brand new set of orbitals which have geometries appropriate to shape bonds withinside the instructions expected via way of means of the VSEPR version

Learn more about Orbitals here https://brainly.com/question/26000020

#SPJ4

Answer:

1-state what the lab is about, that is, what scientific concept (theory, principle, procedure, etc.) you are supposed to be learning about by doing the lab. You should do this briefly, in a sentence or two. If you are having trouble writing the opening sentence of the report, you can try something like: "This laboratory experiment focuses on X…"; "This lab is designed to help students learn about, observe, or investigate, X…." Or begin with a definition of the scientific concept: "X is a theory that…."                        2-give the necessary background for the scientific concept by telling what you know about it (the main references you can use are the lab manual, the textbook, lecture notes, and other sources recommended by the lab manual or lab instructor; in more advanced labs you may also be expected to cite the findings of previous scientific studies related to the lab). In relatively simple labs you can do this in a paragraph following the initial statement of the learning context. But in more complex labs, the background may require more paragraphs.

Explanation:

Answer: the correct answer is A

Explanation:

\(Ba(OH)_2\rightarrow \bold{\green{Barium\: hydroxide}}\)

\( Ca(OH)_2\rightarrow \bold{\red{Calcium\: hydroxide}} \)

\(RbOH \rightarrow \bold{\blue{Rubidium \:hydroxide}}\)

The inorganic substance with the chemical formula BaSO4 is barium sulfate (or sulphate). It is a tasteless, crystalline white substance that is insoluble in water.

A barium cation and a sulfate anion are the two elements that make up barium sulfate. There are four oxygen atoms joined to the sulfur. A sulfate salt of barium, known as BaSO4, is present in the mineral barite. It is a white crystalline substance that is soluble in strong acids but insoluble in water and alcohol.

Elements include both barium and bromine. Barium is a metal belonging to Group 2 of the modern periodic table, and bromine is a non-metal belonging to Group 17 (halogen).

To know more about chemical formula visit:-

https://brainly.com/question/29031056

#SPJ1

A chemist designs a galvanic cell by carefully selecting two compatible half-reactions—one for oxidation and the other for reduction. The half-reactions you provided represent the reduction half-reaction. The chemist would need to select an appropriate oxidation half-reaction to complete the design of the galvanic cell.

The half-reaction you mentioned is as follows:

NO3- + 4H+ + 3e- → NO(g) + 2H2O

In this reaction, nitrate ions (NO3-) and hydrogen ions (H+) combine with three electrons (3e-) to form nitrogen monoxide gas (NO) and water (H2O). This is the reduction half-reaction, as it involves the gain of electrons.

To construct a galvanic cell, two half-reactions are needed—one for the oxidation half-reaction and the other for the reduction half-reaction. The half-reaction you provided is the reduction half-reaction, which means it occurs at the cathode (the electrode where reduction takes place) in the galvanic cell.

For the oxidation half-reaction, the chemist would select a suitable reaction involving another species. The oxidation half-reaction will take place at the anode (the electrode where oxidation occurs). Without the information on the chosen oxidation half-reaction, I cannot provide a specific explanation. However, I can guide you through the general process.

To design the galvanic cell, the chemist must ensure that the reduction half-reaction and oxidation half-reaction are compatible. The oxidation half-reaction should involve a species that can provide the required number of electrons for the reduction half-reaction to occur.

Once both half-reactions are chosen, the next step is to assemble the galvanic cell. The two half-cells are connected by a salt bridge or a porous barrier to allow the flow of ions. The electrodes, where the half-reactions occur, are immersed in their respective electrolyte solutions.

During the operation of the galvanic cell, the oxidation half-reaction takes place at the anode, where oxidation occurs, and electrons are released. These electrons flow through an external circuit to the cathode, where reduction occurs. The reduction half-reaction consumes the electrons and produces the desired products.

As the oxidation and reduction half-reactions occur, ions flow through the salt bridge or porous barrier, maintaining charge balance and allowing the overall reaction to continue.

The galvanic cell produces an electric current that can be harnessed to power electronic devices or perform useful work. The magnitude of the electric current depends on factors such as the concentrations of the reactants, the nature of the electrode materials, and the overall cell potential.

Click the below link, to learn more about galvanic cell:

https://brainly.com/question/29784742

#SPJ11

The average  atomic mass of the element = 14.0135 amu and the element is Nitrogen

14.00 × 98.632 % + 15.00 × 1.3668 %

= 1,401.35 %

average atomic mass = \(\frac{1401.35}{100}\)

             = 14.0135 amu

Isotopes are part  of a family of an element that  have all  the same number of protons but different numbers of neutrons. The number of protons in a nucleus defines the element's atomic number on the Periodic Table.  Taking example, carbon  is having  six protons and it's atomic number 6.

The average atomic mass (generally known as  atomic weight) of an element is the weighted average mass of the atoms in a naturally participating  sample of the element. Average masses are generally determined  in unified atomic mass units (u), where 1 u is equal to one-twelfth of  the mass of a neutral atom of carbon-12.

Learn more about atomic mass :

brainly.com/question/24666479

#SPJ9

If the sample of magnesium used in a lab was contaminated with another metal that doesn't react with hydrochloric acid, then the results obtained in the experiment would be affected.

This is because the data collected during the experiment would reflect the reaction between hydrochloric acid and the contaminated sample instead of pure magnesium. As a result, the following changes in results might have been observed:

1. The mass of the contaminated sample would be higher than the mass of pure magnesium.

2. The rate of reaction between the contaminated sample and hydrochloric acid would be slower than the reaction between pure magnesium and hydrochloric acid.

3. The volume of hydrogen gas collected from the reaction would be lower than the volume of hydrogen gas collected in the reaction between pure magnesium and hydrochloric acid.

learn more about contaminated here

https://brainly.com/question/465199

#SPJ11

Explanation:

7.95x10^7 = [?]x 10^6

[?] = 79.5

hope this helps you.

Answer:

A) \({MnO_4}^- + 3 H^+ + \frac{5}{2} H_2O_2 \rightarrow Mn^{2+} + 4 H_2O + \frac{5}{2} O_2 \)

B) 7.5 molar

Explanation:

A) Reduction

\({MnO_4}^- + 8 H^+ + 5e^- \rightarrow Mn^{2+} + 4 H_2O\)

Oxidation

\(H_2O_2 \rightarrow O_2 + 2 H^+ + 2e^-\)

Multiplying the oxidation reaction by 5/2 and adding it to the reduction equation:

\({MnO_4}^- + 8 H^+ + 5e^- \rightarrow Mn^{2+} + 4 H_2O\)

+

\(\frac{5}{2} H_2O_2 \rightarrow \frac{5}{2} O_2 + 5 H^+ + 5e^-\)

-----------------------------------------------------------------------------------------------------

\({MnO_4}^- + 3 H^+ + \frac{5}{2} H_2O_2 \rightarrow Mn^{2+} + 4 H_2O + \frac{5}{2} O_2 \)

B) 10 ml = 0.01 L

20 ml = 0.02 L

mol of MnO4− = molarity*volume = 1.5*0.02 = 0.03

1 mol of MnO4− reacts with 5/2 mol of H2O2, then:

mol of H2O2 = 0.03*5/2 = 0.075

molarity = mol/volume = 0.075/0.01 = 7.5 molar

Answer:

6,400 km = 6.4 x 10³ km.

Explanation:

Measurements => Scientific Notation.

Scientific notation is a way to express numbers as the product of two numbers: a coefficient and the number 10 raised to a power. The exponent must be a non-zero integer, it can be either positive or negative. The value of the coefficient is greater than or equal to 1 but it should be less than 10.

In this case, we request to write 6,400 kilometers in scientific notation. Based on the concept of scientific notation, our coefficient would be 6.4 because is greater than 1 and less than 10. 6,400 is a positive integer that contains 4 digits, so we have to multiply 6.4 by 1000 to obtain 6,400. 1000 equals 10³, so the 6,400 kilometers in scientific notation would be 6.4 x 10³ kiloem km.

Answer: Scientific Theory is a is a well-substantiated explanation  of something you have repeatedly confirmed through observation and experiment.  

Metals conduct electricity due to the unique properties of their atomic structure and the behavior of electrons within them.

At the atomic level, metals consist of a lattice structure in which positively charged atomic nuclei are surrounded by a "sea" of delocalized electrons. These electrons are not tightly bound to any specific nucleus and are free to move throughout the metal.

When an electric potential difference is applied across a metal, the delocalized electrons can easily drift in response to the electric field. This movement of electrons constitutes an electric current. The delocalized electrons act as charge carriers, effectively transporting electrical charge from one location to another.

The ability of metals to conduct electricity is attributed to the mobility and abundance of these delocalized electrons. Unlike in non-metals, where electrons are tightly bound to specific atoms, metals have a large number of free electrons available for conduction. These electrons can move relatively freely, colliding with lattice imperfections or other electrons, but on average, they maintain a consistent flow.

The metallic bond, which involves the sharing of electrons between atoms in the lattice, allows for the efficient transmission of electrical energy through the metal. This unique electron behavior in metals enables them to be excellent conductors of electricity.

Know more about Metals here:

https://brainly.com/question/4701542

#SPJ8

The following chemical equations have been balanced using the appropriate coefficients.

Mg(OH)2 + NaCl → MgCl2 + 2NaOH

H2SO4 + BaCl2 → BaSO4↓ + 2HCl

AgNO3 + Fe(NO3)2 → AgFeO2↓ + 2NO3

Balancing chemical equations in chemistry involves adjusting the coefficients of the reactants and products in a chemical reaction so that the number of atoms of each element is equal on both sides of the equation.

Note: Never change the subscripts in a chemical formula to balance an equation. Only coefficients can be changed.

Mg(OH)2 + NaCl → MgCl2 + 2NaOH

H2SO4 + BaCl2 → BaSO4↓ + 2HCl

AgNO3 + Fe(NO3)2 → AgFeO2↓ + 2NO3

MgCl2 + 2NaOH → Mg(OH)2↓ + 2NaCl

3NaOH + Fe2(SO4)3 → Fe(OH)3↓ + 3Na2SO4

Pb(NO3)2 + 2KCl → PbCl2↓ + 2KNO3

MgSO4 + BaCl2 → MgCl2 + BaSO4↓

Cu(NO3)2 + 2KOH → Cu(OH)2↓ + 2KNO3

Al(OH)3 + NaOH → NaAlO2 + 2H2O

BaCO3 + H2SO4 → BaSO4↓ + CO2↑ + H2O

ZnCl2 + 2AgNO3 → 2AgCl↓ + Zn(NO3)2

BaSO4 + 2KOH → Ba(OH)2↓ + K2SO4

Fe(NO3)3 + 3KOH → Fe(OH)3↓ + 3KNO3

NaHCO3 + KHCO3 → NaKHCO3 + H2O + CO2↑

Ba(OH)2 + Na2CO3 → BaCO3↓ + 2NaOH

Al + H2SO4 → Al2(SO4)3 + H2↑

Learn more on balancing equation on https://brainly.com/question/11904811

#SPJ1

Answer:

Outside air

Nose

Lungs

Bloodstream

Cell

Explanation:

We breathe in oxygen from the outside air in through our nose and it travels to our lungs. Inside our lungs, we have Avioli's that diffuse oxygen into our bloodstream and the bloodstream helps the oxygen travel into our cells.

Hope this helps :)

Respiration is the process of exchange of gases between the cell and atmosphere. The path of respiration involves Outside Air⇒  Nose⇒ Lungs⇒ Bloodstream⇒ Cell.

Respiration is the movement of oxygen from the outside environment to the cells and the removal of carbon dioxide from the cells into the outside environment.

Respiration is of two types depending upon the presence of oxygen:

1. Aerobic Respiration: This takes place in the presence of oxygen

2. Anaerobic Respiration: This takes place in the absence of oxygen.

The path of respiration includes inspiration of outside air into the nose, through the nostrils this air is passed on to the lungs. The alveoli is the site of gaseous exchange in the lungs. In the lungs, oxygen is inspired and carbon dioxide is expired.

The oxygen gas which is inspired by the lungs is dissolved in the blood. Oxygen forms a complex with the hemoglobin protein present in the blood. This blood is then circulated to all the cells and tissues of body. Thus, the oxygen is supplied to all the cells and tissues. The path includes Outside Air⇒  Nose⇒ Lungs⇒ Bloodstream⇒ Cell.

Learn more about Respiration here:

https://brainly.com/question/12605249

#SPJ5

Answer:

Low melting point

Explanation:

Transition metals have the following properties:

Conductivity (Electrical and Thermal)

Malleability (You can hit it with a hammer to mold it)

High melting point

Answer:

Low melting point

Explanation:

Most transition metals property is high melting point.

According to the graph presented, we can see that NaNO3 has a higher solubility at 30°C, as we can see more than 100 grams of NaNO3 can be dissolved in 100 grams of water, whereas all other solutes will have a way lower value. Letter D

Conclusion call the organized steps taken to answer a scientific problem.

The Scientific Method is defined as a logical and rational order of steps through which scientists come to conclusions related to the world around them. The Scientific Method helps in the organization of thoughts and procedures by which the scientists are in confident in the answers they find.

OBSERVATION is considered as the first step through which they get to know how they want to go about your research.

HYPOTHESIS is the step in which we think hypothetical means about the answer which we have to find.

PREDICTION is our specific belief about our scientific idea:like, If my hypothesis is true, then I predict we will discover this.

EXPERIMENT is defined as the tool that we invent to answer our question.

CONCLUSION is the answer which our experiment gives.

Thus, we concluded that the Conclusion call the organized steps taken to answer a scientific problem.

learn more about scientific method:

https://brainly.com/question/17216882

#SPJ4

a pure substance with one type of atom is called a(n) _____ A. molecule OR B. Element

Answer:-Element

An element is a pure substance and is made of only one type of atom; it cannot be broken down into a simpler substance.

\( \: \)

Answer:

a pure substance with one type of atom is called an element