Consider the cyclohexane framework in a chair conformation, where carbon 1 has two substituents, X and Y. a. Label each position as axial or equatorial. b. On the same figure, label all positions that are gauche to the Y group on carbon 1. A bin may hold more than one label. Answer Bank x gauche quatorial 6 N 3 gauche

The molar mass of the unknown gas is equal to 11.62 g/mol.

The ideal gas law can be demonstrated as the general equation of the state of a perfect gas.  Ideal gas law gives the product of the volume and pressure of gas equal to the product of the absolute temperature and universal gas constant (R).

The ideal gas equation can be represented in the form equation as follows:

PV = nRT

PV = (m/M) RT

M = mRT/PV

Where m is the mass of the gas, P is the pressure,  V is the volume of the gas,  and R is the gas constant.

Given, the volume of the unknown gas, V = 750 ml = 7.5 L

The temperature of gas, T = 100°C = 100 + 273 = 373 K

The value of the gas constant, R = 0.082atm.L/K mol

The mass of the gas, m = 2.85 g

The pressure of the given gas, P = 760 mmHg = 1 atm

Substituting the values m, V, R, P, and T in the gas equation, we get:

The mass of unknown gas, M = mRT/PV

M = (2.85 ×0.082 × 373)/(1 ×7.5)

M = 11.62 g/mol

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Answer: Chlorine.

Explanation: The correct answer to this equation when fluorine is added to sodium chloride gives sodium fluoride and chlorine.

Fluorine + sodium chloride →sodium fluoride +Chlorine

A chemical reaction states The rearrangement of the molecular or ionic structure of a substance, rather than its physical change or nuclear reaction. A chemical reaction always has reactants and products.

A chemical reaction occurs when compounds or substances undergo a chemical change to form different compounds or substances.

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Consider a supersaturated solid solution consisting of components a and b, so the system's temperature and pressure of supersaturation is in a non equilibrium state. in supersaturation the solution contains more solute than in equilibrium.

The solute concentration in solution surpasses the solubility under specific conditions is called as supersaturation.

Thus, Consider a supersaturated solid solution consisting of components a and b, where the abundant species b precipitates out to form particles of pure b. following nucleation, the particles grow to much larger sizes through diffusion. this coarsening, known as Ostwald ripening so the system's temperature and pressure of supersaturation is in a non equilibrium state. in supersaturation the solution contains more solute than in equilibrium.

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84 mL of 0.060 M NaF is mixed with 28 mL of 0.15 M Sr(NO3)2. the concentration of Sr2+ in the final solution is 0.015 M.

NaF = 84 mL = 0.084 L

Concentration = 0.060 M

Sr(NO₃)₂ = 28 mL = 0.028 L

molarity = 0.15 M.

molarity of NaF = mole / total volume

                          = (0.084 × 0.060) / 0.112

                          = 0.045 M

molarity of  Sr(NO₃)₂  = mole / total volume

                                   = (0.028 × 0.15) / 0.112

                                   = 0.0375 M

the equation is given as :

Sr²⁺   +  2F⁻  ---->  SrF₂

ksp = [Sr²⁺ ] [ F⁻]²

2 × 10⁻¹⁰ = (0.037 + x)(0.045 +2x)²

Sr²⁺ = x + 0.0375 = 0.015 M

The concentration of Sr²⁺ = 0.015 M.

Thus, 84 mL of 0.060 M NaF is mixed with 28 mL of 0.15 M Sr(NO3)2. the concentration of Sr2+ in the final solution is 0.015 M.

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COOH, SOCH, NH are the acids among compounds.

Any substance that, when dissolved in water, imparts an acidic flavor, can change the color of some indicators (such as blue litmus paper turning red), can react with some metals to release hydrogen, can interact with bases to form salts, and can quicken various chemical processes (acid catalysis). Acids are examples of both inorganic compounds known as mineral acids, such as sulfuric, nitric, hydrochloric, and phosphoric acids, as well as organic molecules that belong to the carboxylic acid, sulfonic acid, and phenol families. These substances have one or more hydrogen atoms, which when in solution are released as positively charged hydrogen ions (see Arrhenius theory).

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Answer: I think because their is metals on the left side of the peridoic table

Explanation:

The molarity of the acetic acid solution is 0.7576M

What is molarity?

It is the proportion of an ingredient in a specific volume of solution. The number of moles of a solute in a litre of solution is referred to as molarity. 

What is acetic acid ?

With the chemical formula CH3COOH, acetic acid is also referred to as ethanoic acid, ethylic acid, vinegar acid, and methane carboxylic acid. Vinegar's distinctive smell is caused by acetic acid, a fermentation byproduct. Water-soluble acetic acid makes up 4-6% of vinegar.

molar mass of acetic acid (HC2H3O2 )   = 60g/mole

molarity of acetic acid       = 1M  = 1 mole/L

molarity of acetic acid     = 1 mole/L * 60g/mole

                                       = 60g/L  >>>>>answer

9.  CH3COOH + NaOH ------------> CH3COONa + H2O

   1 mole            1 mole

 CH3COOH                                                                NaOH

M1   =                                                                        M2  = 0.2M

V1   = 25ml                                                                V2   = 94.7ml

n1   = 1                                                                        n2  = 1

                    M1V1/n1    =     M2V2/n2

                      M1            =    M2V2n1/V1n2

                                       =    0.2*94.7*1/25*1    = 0.7576M

molarity of acetic acid     = 0.7576M

Therefore, the molarity of the acetic acid solution is 0.7576M.

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In a chemical reaction, one or more substances—also known as reactants—are changed into one or more additional substances—also known as products.                                                                                                 Chemical elements or chemical compounds make up substances. Color change, gas production, smell change, temperature change are all examples of chemical transition circumstances. Chemical transitions, commonly referred to as chemical reactions, are the conversion of one or more chemicals into one or more brand-new, distinct substances. Atoms are rearrange during chemical reactions, and as new products are produced, the reaction is accompanied by an energy change. The reaction of sodium and water to produce sodium hydroxide and hydrogen is an illustration of a chemical change. A great deal of energy is released, causing the hydrogen gas to burn spontaneously in the atmosphere.

Hence, chemical change are irreversible changes.

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DUMP molecule serve as immediate precursor for synthesising dttp.

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The air compresses as it cools. Additionally, fewer molecules travel around in colder air. Less pressure will be applied to the tire walls by the air molecules. As a result, your tires appear to be flat.

Many drivers will notice a low-pressure warning light on their dashboard as winter approaches, or they may just notice that their tires don't appear to be quite as full as they should. The temperature decline is primarily to blame for this since colder air is denser and requires less tire pressure.

In the winter, your tires lose air for the same physiological reason that medical professionals advise you to apply ice to an injury: cold temperatures promote contraction. Let's examine a closer examination of the science Warmer molecules travel more quickly. These swiftly moving molecules take up more room and disperse farther apart.

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Scientists think the Grand Canyon was formed when the Colorado River began to cut a channel through layers of rock.

The Grand Canyon is a one-kilometer-deep canyon in northern Arizona. Scientists estimate that the canyon may have formed 5 to 6 million years ago when the Colorado River began to channel itself through the rock formations. Humans have lived in the canyon and surrounding areas since the last Ice Age.

Paleozoic strata contain many fossils that help scientists learn more about the geological history of North America. Most of the fossils are sea creatures, which tells us that what is now central Arizona was once a sea. Here are some of the most common fossils found in the Grand Canyon. Canyons are formed by erosion. Over thousands of years, the flow of rivers erodes and erodes soil and rocks forming valleys.

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The values in cells A2 and A20 are added using the Excel notation =SUM(A2:A4).

The values in a range (a group of cells) can be added simply with a formula, however the SUM function is more user-friendly when working with bigger numbers. =SUM(A2:A6) is less likely to contain typographical errors than =A2+A3+A4+A5+A6.

In order to form the equation:

Put =SUM and the opening parenthesis in a cell ().

Enter the first formula range, commonly known as an argument, by typing A2:A4 (a piece of information required for the formula to function).

Type a comma to separate the first and second arguments (,).

The next argument to type is C2:C3.

Type a closing parenthesis, then press Enter.

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The answer is 1.5 ounces.

Although the U.S. government has never declared an official measurement for this most states and bars use this amount for shots. Shots are used as part of happy hour drinks or in popular cocktail recipes. can be provided separately. Pubs and bars typically serve spirits in 25ml increments. This is roughly 1 unit of alcohol per unit.

But with many pubs and bars switching to 35ml or 50ml units these days, you may be drinking a lot of alcohol without realizing it. A portion is a measured amount of food or drink. B. A piece of bread or 1 cup of milk. Many foods presented as single servings actually contain multiple servings.

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Alpha and beta particles originate from the nucleus. protection from radiation is necessary because if radiation passes through the body it can damage cells. exposure to radiation can be limited by increasing the distance from the radioactive source.

The Alpha and  beta particle are the unstable atoms on decay. the radiation is very very harmful to us it can damage the cells or DNA and have impact on mutation. exposure to radiation can be limited by increasing the distance from the radioactive source.

Thus, Alpha and beta particles originate from the nucleus. protection from radiation is necessary because if radiation passes through the body it can damage cells. exposure to radiation can be limited by increasing the distance from the radioactive source.

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The statement 'the first step of a direct-marketing program is to determine which markets to target through the use of a mailing list or a marketing database' is false.

In the field of business, such a strategy by which a company or organization directly reaches out to its customers or potential buyers of products, rather than including any third party is referred to as direct marketing.

The first step in direct marketing is to recognize your target market. The target market is recognized by fully researching about the market and its aspect.  A mailing list or a marketing database is not used for this purpose. Rather fully detailed research analytics into the insight is used. Hence, the statement is false.

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An saturation pressure of each component in a gas mixture is the force that would occur is if gas alone covered the complete volume of the original mixture with the same temperature, partial pressure of 627.0c.

Helium was mostly commonly used to fill balloons for celebrations and parades since it is a secure, non-flammable gas. Helium, however, is an essential element in a variety of industries, including high-tech manufacturing, medical technology, space travel, and national security. Helium, the second most common element in the cosmos, is in little supply on Earth. It is the lightest gas, colorless, odorless, inert, and has a low boiling point. It is a byproduct from nuclear fusion and nuclear decay.

PV = nRT

=41.8*25.0*6.00

=627.0

A volume of 6.00 l at 25.0oc is 627.0c.

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Structure A is the electron rich compound and starting material is electron poor one.

What is electron rich carbon?

The carbon that contain a negative charge or attached with a electropositive atom is known as electron rich carbon.

What is electron poor carbon?

The carbon that contain a positive charge or attached with a electronegative atom is known as electron poor.                                      Read more about electron rich atom:

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NOTE: The given question is incomplete on the portal. Here is the complete question.

Question:

The correct answer is BH₃.

Boron is the fifth element in the periodic table.

Hydrogen is the first element in the periodic table.

A boron-hydrogen compound's empirical formula is BH₃.

It has a 27.7 g/mol molar mass.

As it joins three atoms, the boron-hydrogen-boron bridge link, which has two electrons, is also known as a three-center, two-electron bond.

An enduring attraction between atoms or ions known as a chemical bond is what allows molecules and crystals to form. The bond may be created by the sharing of electrons in covalent bonds or by the electrostatic attraction of two oppositely charged ions, as in ionic bonds.

As it joins three atoms, the boron-hydrogen-boron bridge link, which has two electrons, is also known as a three-center, two-electron bond.

In the earth's subsurface, there is just free hydrogen. The majority of hydrogen is found in stars and gas giant planets. Hydrogen dominates the composition of the Sun. The pressure is so intense in the inside of stars that hydrogen atoms are changed into helium atoms.

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The three negative electrons that surround the lithium atom's nucleus, on the other hand, make it neutral.

The nucleus manages and regulates the operations of the cell, houses the genes and molecules that contain the genetic information (such as growth and metabolism). Inside the nucleus, nucleoli, which are tiny structures, are frequently found. The nuclear components appear to be suspended in a gel-like matrix called the nucleoplasm.

The nucleus is recognized as one of the most important parts of eukaryotic cells because of its function in the storage, recovery, or duplication of genetic information. It is an organelle that has two membranes connected to it and houses chromatin, a type of genetic material.

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True;  A chemist prepares a solution of calcium bromide by measuring out of calcium bromide into a volumetric flask and filling the flask to the mark with water.

Compounds with the chemical formula CaBr2(H2O)x are known as calcium bromide. The rare dihydrate (x = 2), the hexahydrate (x = 6), and the anhydrous substance (x = 0) are examples of individual compounds. Each of the white granules dissolves in water, and the hexahydrate crystallises from these solutions. Most drilling fluids employ the hydrated form. It is created when hydrobromic acid, calcium oxide, calcium carbonate, or calcium metal combine with elemental bromine.

It assumes the rutile structure, with octahedral Ca centres bonded to six bromide anions that also form bridges to other Ca centres.

Strongly heated calcium bromide in air will react with oxygen to form calcium oxide and bromine.

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A buffer solution is used to maintain the pH of a solution. Buffer solution has a constant pH and it does not taking part in any reaction directly. Thus, option C is correct.

pH of a solution is the concentration of H+ ions in the solution. It measures how acidic or basic the solution is. The solution of pH 7 is neutral and solution with pH below 7 is acidic. Basic solutions has the pH above 7.

A buffer solution is used to maintain the pH of a solution in a constant either in acidic or basic range. There are two types of buffer solutions acidic buffer and basic buffers.

An acidic buffer is made by mixing  a weak acid with its salt and a basic buffer is made by mixing a weak base with its salt. A buffered solution will change its pH up on the addition of an acid or base. Hence, option C is correct.

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The equal volumes of 0.0300 m nh3 and 0.0150 m hcl are mixed together the concentrations of nh3 and nh4 in the reaction are  0.0075 M .

Suppose the every identical quantity is V.

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The answer is you will need 300 ml of 65% solution and 150 ml of 20% solution to produce 450 ml of a 50 per cent solution.  

According to the question:

Start by defining variables to represent the amounts of each of the solutions that are going to be mixed.

So let x = the amount of the 65% solution, and y = the amount of the 20% solution.

First of all, you know that x + y = 450, because after they are mixed you want to have 450 ml of the 50% solution.

Second, look at how much acid is in each of the starting solutions and how much is in the ending solution.

The 65% solution is 65% acid, so the amount of acid in it is 65% of x, or .65x. Similarly, the amount of acid in the 20%  

solution is 0.2y

At the end, the amount of acid you want to end up with is 50% of 450ml, so that's 225 ml.

When you mix the two solutions, you're not going to change the total amount of acid you started with. This means that  

0.65x + 0.2y = 225

So, you have two solutions with two unknowns, and that's something you can solve:

x + y = 450

0.65x + 0.2y = 225

Let's use elimination. Multiply the first equation through by 0.65:

0.65x + 0.65y = 0.65*450 = 292.5

Now you have:

0.65x + 0.65y = 292.5

0.65x + 0.2y = 225

Subtract:

0.45y = 67.5

Divide by 0.45

y = 67.5 / 0.45 = 150

Since x + y = 450, that means that x = 300.

So, you will need 300 ml of 65% solution and 150 ml of 20% solution to produce 450 ml of a 50 per cent solution.  

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Intermolecular forces are the forces that exist between molecules. These forces are responsible for the interactions between molecules, and they determine the physical and chemical properties of matter. Without intermolecular forces, matter would not exist as we know it.

Intermolecular forces are classified into four main types: dispersion forces, dipole-dipole forces, hydrogen bonding, and ion-dipole forces. Dispersion forces are the weakest of the four, but they are also the most common. Dispersion forces exist between all molecules, and they are responsible for the forces of attraction between molecules. Dipole-dipole forces are slightly stronger than dispersion forces, and they exist between molecules that have dipoles. Hydrogen bonding is the strongest of the intermolecular forces, and it exists between molecules that have hydrogen atoms bonded to nitrogen or oxygen atoms. Ion-dipole forces are the strongest of the intermolecular forces, and they exist between molecules that have an ionic charge.

Intermolecular forces are important because they determine the physical and chemical properties of matter. Without these forces, matter would not exist as we know it.

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Steps that are required to generate a Wittig reagent are: -reaction of phosphonium salt with a strong base and reaction of alkyl halide with Ph3P.

Wittig reagents are made by deprotonation of alkyl phosphonium salts and then this reaction can be reversed. The methodology is useful in the preparation of unusual Wittig reagents. Alkylation of Ph3P=CH2 with a primary alkyl halide R−CH2−X, gives out substituted phosphonium salts: Ph3P=CH2 + RCH2X → Ph3P+ CH2CH2R X.

Wittig reaction has a low atom economy because triphenylphosphine oxide is formed as a byproduct but this reaction can be improved in the absence of solvent.

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Here using the radius ratio rule

Therefore ,

[tex]\frac{RA+}{RB-}[/tex]  = [tex]\frac{ 0.069 }{0.140 }[/tex]

[tex]\frac{RA+}{RB-}[/tex] = 0.49

Hence coordination number is  0.49.

What is Radius Ratio Rule?

Radius Ratio is the ratio of smaller ionic radius (cation) to bigger ionic radius (cation) (anion). Radius ration = rs/rl.

What is its significance?

Hence  0.49 is a correct answer.

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Reactants are located to the left of the arrow, and coefficients are represented by the full numbers to the left of compounds. The reactants in this reaction have coefficients of 4 and 3.

A component that is available at the outset of a biochemical reaction is known as a reactant. Products are the material(s) to the side of the arrow. A substance that remains after a chemical reaction is complete is known as a product. These are referred to as the reactants in a chemical reaction. The results of a process are called the outputs. These are referred to as the products in a chemical reaction.

The reactants (everything you start with) are transformed into products in a chemical process (what you end with). An arrow separates the reaction mixture, which are displayed on the left side of an equation, from the outputs, which are displayed on the right.

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The complete question is -

A reaction is shown. Using the chemical equation provided, identify which of the following are the coefficients of the reactants.

4Fe+3O2⟶2Fe2O3

Select all that apply:

7

4

3

2

The effect of exposure is the exposure to high level of radiation will b urn the skin.

The effect of the radiation exposure is it will cause a severe damage to your skin and it cause radiation sickness. the light exposure to the retina will cause photoreceptor cell , damage to the condition. the high level of the radiation exposure  will cause the life long health damage like cancer, cardiovascular diseases etc.

The radiation exposure also cause the hair loss. the harmful effect of the radiation exposure on the body is it leads to the thyroid, heart and brain functioning.

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About approximately four billion years ago, the first organic compounds started to form. This could have occurred when chemical processes in the early atmosphere of Earth were triggered by lightning.

In essence, macromolecules are polymers, which are composed of several long chains of monomeric molecules. Proteins, carbohydrates, and nucleic acids all exist as lengthy polymers. They are referred to as macromolecules because of their huge size and polymeric makeup.

They frequently result from the synthesis of smaller molecules like as proteins, lipids, and polysaccharides. A polymer is another term for a macromolecule that comes from the Greek word poly-, which means "many units."

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Dr. Metallica can change the property of an alloy by changing metal or non metal and their respective percentage in alloy.

The meaning of an alloy is a material created by combining two or more metals. Additionally, alloys can be created by combining metals with other elements. Alloys frequently display characteristics that vary greatly from those of their constituent parts. It is usual for alloys to be harder and stronger than pure metals. Copper and zinc are two metals that are mixed to make brass. A metallic element (iron) and a trace amount (up to 2%) of a non-metallic element are alloyed to form steel (carbon). Copper and tin are combined to make bronze. It is frequently used in medals, coins, trophies, heavy tools, electrical components, and gears. Bronze typically contains copper (Cu) in the range of 75% and tin (Sn) up to 12%.

Hence, property of alloy can be changed through constituent element and their percentage.

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