describe what result you would expect if one employed a fractional distillation apparatus in this experiment.

The number of isomers of Heptane and sketch/draw all the structures is 9 isomers.

Isomers are molecules or polyatomic ions with identical molecular formulae that are, identical variety of atoms of every detail however awesome preparations of atoms in space. Isomerism is the existence or opportunity of isomers. Isomers no longer always share similar chemical or bodily residences.

One in all two or more compounds that have equal chemical components however extraordinary arrangements of the atoms within the molecules and that can have exclusive physical/chemical homes.

Structural isomers are the one's isomers wherein the atoms are absolutely organized in a distinct order with equal molecular formulation. those are the molecules having the identical form of molecular system with distinct connectivities relying upon the order they may be prepared.

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Answer:

of zinc sulfide:

0.382 moles ZnS * 97.45 g/mol = 37.4 g ZnS

To find the mass of the excess reactant (sulfur) that will remain after the reaction is complete, we need to subtract the mass of the product (zinc sulfide) from the mass of the excess reactant:

30.0 g sulfur - 37.4 g ZnS = -7.4 g excess sulfur

Since the mass of the excess reactant is negative, this means that the reaction will consume all of the sulfur and there will be none left over.

To summarize:

A. Zinc is the limiting reactant.

B. 37.4 g of ZnS will be formed.

C. There will be no excess sulfur left over after the reaction is complete.

Explanation:

The answer is d. 1/250.

How to solve for the fraction of original reactant concentration?

Since the elimination of the pharmaceutical iv antibiotic gentamicin follows first-order kinetics and the half-life of gentamicin is 1.5 hours for an adolescent, we can use the equation given below to solve for the fraction of original reactant concentration that will remain after 8 hours.

C = Coe^(-kt)

Here, Co = initial concentration of the reactant C = concentration of the reactant after t time t = time elapsed

k = rate constant

For half-life, k = 0.693/t1/2

For t1/2 = 1.5 h,

k = 0.693/1.5

h = 0.462/h

Given, C = 8.4 x 10^-5 m t = 8 hours. So, Co = 8.4 x 10^-5 m/e^(0.462 x 8)C0 = 8.4 x 10^-5/e^3.696 = 8.4 x 10^-5/39.3093C0 = 2.137 x 10^-6

The fraction of the original reactant concentration that will remain after 8 hours = C/C0= (8.4 x 10^-5)/(2.137 x 10^-6)= 39.3093≈ 1/250.

Hence, the answer is d. 1/250.

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5+55+5÷2÷4+17 divided the square root of 17+ a square root of 5-5 to the second power +4 to the second power is equal to 63.744

To solve this expression, we need to follow the order of operations: parentheses, exponents, multiplication and division, and finally addition and subtraction.

First, let's simplify the expressions within the parentheses:

17 + √17 + √5 - 5² + 4²

= 17 + √17 + √5 - 25 + 16

= √17 + √5 + 8

Now, substitute this expression into the original equation and simplify:

5 + 55 + 5 ÷ 2 ÷ 4 + 17 ÷ (√17 + √5 + 8)

= 5 + 55 + 2.5 + (17 / (√17 + √5 + 8))

= 62.5 + (17 / (√17 + √5 + 8))

=  63.744

This is the simplified expression.

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Option d.

The conjugate base of the bicarbonate buffer system is \(HCO_3^-\).

A buffer system is a solution that can resist changes in pH. It works by converting a strong acid or a strong base into a weak acid or a weak base. In addition, there are two types of buffer solutions: acidic buffers and basic buffers.

A bicarbonate buffer system is a buffer system that consists of the bicarbonate ion and carbonic acid. Bicarbonate is a base, whereas carbonic acid is an acid. When the solution becomes too acidic, the bicarbonate ions in the solution can react with hydrogen ions to form carbonic acid. When the solution becomes too alkaline, the carbonic acid in the solution can react with hydroxide ions to form bicarbonate ions.

The formula for the bicarbonate buffer system is:

\(CO_2(g) + H_2O(l)\) ⇌ \(H_2CO_3(aq)\) ⇌ \(H^+(aq) + HCO_3^-(aq)\)

It can be seen from the formula that \(HCO_3^-\) is the conjugate base of the bicarbonate buffer system, thus, the answer is d. .\(HCO_3^-\)

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Considering the solutions: 0. 04 m acetone [(ch3)2c=o)], 0. 04 m agno3 and 0. 04 m cacl2,

The osmotic pressure is the least amount of pressure that must be applied to a solution in order to block the passage of the solution's pure solvent through a semipermeable membrane.

Reducing the amount of solvent molecules that escape into the vapour phase also reduces the pressure that the vapour phase exerts. This is referred to as a relative decrease in vapor pressure.

Any material's boiling point is the temperature at which it changes from the liquid phase into the gas phase. For water, this occurs at 100 degrees Celsius.

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Answer:

water

Explanation:

Because it does not have more than one component.

Answer:

B

Explanation:

Sample B takes more drops for both P- and T-alkalinity tests to reach pH 8.3 and 4.5. So it is more acidic to begin with.

pH is equal for all three.

Now look at the drops amount

Higher the drops lower the solubility or its less acidic.

So sample A is most acidic then local then sample B

Answer:

the answer is radiation

1.  Only Acid -> Taste sour

(There is increase in H+ ion concentration, providing more ions to tongue and giving sour taste)

2. Only Base -> Feels slippery

Bases dissolve fatty acids and oil from the skin, as a result of which there is a decrease in friction so feels slippery.

3. Both Acid and Base

Presence of H+ in acids and OH- ions in bases makes it conducting in aqueous solution.

Any hydrogen-containing material that has the ability to give another substance a proton is considered an acid. Any molecule or ion that can accept a hydrogen ion from an acid is known as a base.

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Answer:

ionic bonding

Explanation:

it exist between two opposite charged particles

The segment register that can be used to form the source operand address in the instruction MOV AX, 100[BP][SI] is DS (Data Segment).

Without knowing the base for Y, it is not possible to establish a direct relationship between the three unsigned numbers X=1001001B, Y=120Q, and Z=5EH.

In the instruction MOV AX, 100[BP][SI], the segment register that can be used to form the source operand address is DS (Data Segment). The DS register holds the segment base address, which is added to the effective address to calculate the physical address of the source or destination data.

Regarding the relationship between the three unsigned numbers X=1001001B, Y=120Q, Z=5EH:

X=1001001B: This is a binary number represented in base 2. It has a value of 73 in decimal notation (base 10). The subscript "B" indicates that the number is in binary format.

Y=120Q: This number is represented using an unknown base, denoted by the subscript "Q." Without knowing the base, it's not possible to determine the exact value of Y or establish a relationship with the other numbers.

Z=5EH: This number is represented in hexadecimal notation (base 16). It has a value of 94 in decimal notation (base 10). The subscript "E" indicates that the number is in hexadecimal format.

Without knowing the base for Y, it is not possible to establish a direct relationship between X, Y, and Z.

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Answer:

The two measures required are:

C. The speed of sound waves.

D. The amount of time it takes sound waves to travel to the seafloor and back.

Explanation:

To measure the distance between the seafloor and the ship, it's very important to know:

i. the speed of the waves

ii. the amount of time it takes the sound to travel and back.

When estimating water depth, the speed of sound through the water is used. Then the formula for the simple calculation is given as:

Distance = speed x time.

Where speed is the speed of the sound waves and time is the amount of time it takes the sound to travel and back.

Answer:

D and C

Explanation:

I took the test and got it correct. Hope this helps! ;)

Answer:

if i consider this reaction

Fe2O3+ 3CO---》2Fe+ 3CO2

so let's calculate first moles of Fe2O3 i.e. = 256/159.69= 1.6 moles

So the one moles of Fe2O3 is forming three moles of CO2

hence 1.6 moles will form 4.8 moles of CO2

one mole of CO2 is 44 g so 4.8 moles of Co2 is 44×4.8= 211.2 g

so the conclusion is 211.2 g of CO2 can be produced from 256 g Fe2O3!!

i d k it's right or wrong but i tried my best :)

Answer:What distribution of amino acids would you expect to find in a protein embedded in a lipid bilayer? Amino acids with polar side chains will be found on a soluble protein's surface, while amino acids with nonpolar side chains will be found inside the protein.

Explanation:

This will be the net ionic equation:  \(H^{+} +OH^{-}\)→ \(H_{2} O\)

Only the chemicals, ions, and elements that are already deeply involved in the reaction are shown in the chemical equation, which is also known as the net ionic equation.

When\(HCHO_{2}\)   interacts with NaOH, forming \(NaCHO_{2}\) and\(H_{2} O\) .

\(HCHO_{2}+NaOH\)→ \(NaCHO_{2}+\)\(H_{2} O\)

The entire ionic equation appears as follows:

\(H^{+} + CHO_{2} ^{-}\) \(+Na^{+} + OH^{-}\)→\(Na^{+} +\) \(CHO_{2} ^{-}+H_{2} O\).

\(H^{+} +OH^{-}\) →\(H_{2} O\) .

This will be the net ionic equation:  \(H^{+} +OH^{-}\)→ \(H_{2} O\)

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Answer:

The liquefaction of air is used to obtain nitrogen, oxygen, and argon and other atmospheric noble gases by separating the air components by fractional distillation in a cryogenic air separation unit.

Explanation:

Ca is the correct answer. Maybe

Answer:

This means that the pH values of strong acids are lower than that of weak acids, which explains why the rate of reaction of strong acids with substances (such as metals, metal carbonates etc) is higher than that of weak acids.

Explanation:

welcome

Answer:

space

Explanation:

The limiting factor that the illustration closely relates to in the environment is space.

Limiting factors are environmental factors that hinder the population of living organisms living in that environment from reaching their maximum reproductive capacity, also known as biotic potential. Limiting factor include space, foods and other environmental resources such as sunlight, nutrients, etc.

In the illustration, the cupcake tray can only hold 24 cupcakes while Ethan has batter for 25 cupcake. The tray thus is limited in space and as a result, one cupcake batter is left floating. The has limited the production capacity of the cupcake batter.

Answer:

423.44 moles

Explanation:

We need to find no of moles in \(2.55\times 10^{26}\ \text{atoms}\) of Neon.

We know that,

\(1\ \text{mol of atoms}=6.022\times 10^{23}\ \text{atoms}\)

\(2.55\times 10^{26}\ \text{atoms}=2.55\times 10^{26}\ \text{atoms}\times \dfrac{1\ \text{mol}}{6.022\times 10^{23}\ \text{atoms}}\\\\=423.44\ \text{mol}\)

It means there are 423.44 moles in \(2.55\times 10^{26}\ \text{atoms}\) of Neon.

D. She is not right, because there will be more successful collisions

between reactants in the concentrated solutions.

Enid claims that two concentrated solutions will have a lower reaction rate than two dilute solutions. The statement tells that whether Enid is right given as ". She is not right, because there will be more successful collisions between reactants in the concentrated solutions.

So, option D is correct one.

A solution which has relatively large amount of dissolved solute.

Since, rate of the reaction depends upon collision between reactants molecules. Due to presence of large amount of dissolved solute in concentrated solution, more collision is takes place between solute molecules. So, rate of reaction of concentrated solution is more as compare to dilute solution.

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Answer:

It would not be able to survive

Explanation:

A cell can only survive by exchanging materials with its environment. exchange of materials is necessary for life.

For instance, a cell gives out carbon dioxide and takes in oxygen which is necessary for life.

Most cells depend on exchange of materials with their environment for nutrition.

Answer:

The use of fossil fuels for electricity.

Explanation:

This IS the right answer because this helped tasks get more easy.

Answer:

The temperature is kept constant. What new volume does the gas occupy? Two hundred liters of gas at zero degrees Celsius are kept under a pressure of 150 kPa.

Explanation:

Oxygen gas is at a temperature of 40°C when it occupies a volume of 2.3 liters. 

The correct option is 3. The density of the liquid in the sample is 777.14 g/mL. Density is a physical property that describes how much mass is contained in a given volume of a substance.

The density of the liquid can be calculated using the equation:

density = mass / volume

where mass is the mass of the sample and volume is the volume of the sample. To determine the volume of the sample, we first need to convert the volume to liters. The volume of the sample is given in liters, so no conversion is necessary.

mass = 27.2 g

volume = 0.035 L

density = 27.2 g / 0.035 L = 777.14 g/mL

Therefore, the density of the liquid is 777.14 g/mL, which corresponds to option 3: 777.14 g/mL.

Density is an important property that can be used to identify a substance and to determine its behavior in different environments. In this case, the density of the liquid can be used to determine if the liquid is more dense or less dense than water and to predict how it will behave in different conditions.

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The reaction that corresponds to the formation constant, Kf, of the complex ion:\([Co(CO(OH)_4)2]^- : Co_2+ + 2CO(OH)_4^- + 6H_2O ⇌ [Co(CO(OH)_4)2]^- + 6H_3O+\)

A change in the arrangement of the atoms or molecules of two or more substances when they come into contact, producing the creation of one or more new substances. Electrons from one material interacting with electrons from another causes chemical reactions.  

A balanced chemical reaction equation demonstrates the mole relationships of the reactants and products as well as the reactants and products of a chemical reaction. The energy involved in the reaction is frequently stated.

In this reaction, \(Co_2^{+}\) ion reacts with two \(CO(OH)_4^-\) ions, along with six molecules of water, to form the complex ion, \([Co(CO(OH)_4)2]^-\)and six hydronium ions. The Kf value for this reaction represents the equilibrium constant for the formation of the complex ion, and it is given by the expression:

Kf = \([[Co(CO(OH)_4)2]^-] / ([Co_2+] * [CO(OH)_4^-]^2)\)

where [ ] denotes concentration in moles per liter.

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Answer:

When a low-pressure system moves into an area, it usually leads to cloudiness, wind, and precipitation. High-pressure systems usually lead to fair, calm weather.

Explanation:

Hope this helps :)