What is the unit of temperature on a solubility graph

Based on observation of polar and non-polar molecules, polar molecules would attract each other more strongly.

Polar molecules are those molecules that can ionize or dissociate into their respective positive and negative ions when in an aqueous solution.

Nonpolar molecules, on the other hand, are not ionic i.e. not dissociating into ions when dissolved in water.

Polar molecules like water (H2O) contains an uneven distribution of cations (+) and anions (-), hence, would be more attracted to one another than nonpolar molecules that have an even distribution of ions.

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The families that have the highest reactivities are the a lkali metals and earth alkali metals . These are located far left on the periodic table. They are highly reactive because they have an shell with only 1 electron and need to complete the shell to become stable. The family that is unreactive is inert elements or noble gases.

The alkali metals (lithium family) are highly reactive while the noble gases (helium family) are highly unreactive.

The alkali metals are the elements of group 1 in the modern periodic table which are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).

All alkali metal has their outermost electron in the s-orbital with the outer configuration ns¹. The alkali metals easily lose the outermost electrons to form cations with charge + 1. Therefore they are highly reactive and are stored under oil to stop the reaction with air.

The noble gases have completely filled electronic configurations. The noble gases have a general outer configuration ns²np⁶ so they have completely filled valence shell therefore, they do not feel any attraction for other atoms. Therefore, noble gases exist in monoatomic form. Therefore, noble gases are highly unreactive and also known as inert gases.

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Answer:

Nitrogen is an inert gas — meaning it doesn't chemically react with other gases — and it isn't toxic. But breathing pure nitrogen is deadly. That's because the gas displaces oxygen in the lungs. Unconsciousness can occur within one or two breaths, according to the U.S. Chemical Safety and Hazard Investigation Board.

Answer:

because it is an insert gas and it is very dangerous for ear and our nose

The formation of a precipitate is possible when the product of the ionic concentrations exceeds the Ksp value. Qis is the reaction quotient, which is the ionic product (IP) in a solution.

To determine whether a precipitate will occur, the reaction quotient (Qis) must be compared to the solubility product constant (Kip). The correct option is (d) Precipitation will not occur because Qis < Kip. The calculations are provided solution below; Qis = [Pb2+] [I–]2Moles of NaI = 0.587 L × 0.00531 mol/L = 0.00313 mol Moles of Pb(NO3)2 = 0.840 L × 0.00536 mol/L = 0.00451 mol[Pb2+] = 0.00451 mol / (0.587 L + 0.840 L) = 0.00327 M[I–] = 0.00313 mol / (0.587 L + 0.840 L) = 0.00226 MQsp = (0.00327 M) × (0.00226 M)2 = 1.72 × 10–8 Kip = 1.4 × 10–8As Qsp is less than Ksp, a precipitate will not form. Therefore, the correct option is (d) Precipitation will not occur because Qis < Ksp.

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Answer: 99.5475

Hope this helps(:

According to the rules of rounding off, if the number that we are rounding off if following by digits 5 below, we round the number up and if it the follow up digit is 5 or above, we round the number up.

Any particular number can be rounded to the nearest ten, to the nearest hundred, to the nearest thousand, and so on.

According to the rules of rounding off, if the number that we are rounding is followed by a digit that is equal to or greater than 5, that is, 5, 6, 7, 8, or 9, we round the number up. For example, 47 rounded off to nearest ten is 50.

And, if the number that we are are rounding is followed by a digit which is lower than 5, that is, 0, 1, 2, 3, or 4, then we round off the number down. For example, 22 rounded off to the nearest ten is 20.

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The diagram that show the correct electron configuration is the second option. ⬆⬇1s,  ⬆⬇2s, ⬆⬆⬆2p.

The electronic configuration is the representation of electron present indifferent energy levels is an atom. The different type of orbitals are s, p, d, and f.

Thus, the correct option is 2, ⬆⬇1s,  ⬆⬇2s, ⬆⬆⬆2p.

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The glutamate side chain's gamma carbon is carboxylated by Q1, a vitamin KH2 dependent enzyme, and Q2. A thioester is created when carboxylic acid and coASH interact.

Thioesters are organosulfur compounds having the functional group RSC(=O)R'. By virtue of the thio- prefix, they are implied to be comparable to carboxylate esters (ROC(=O)R'), with the sulphur in the thioester acting as the linking oxygen in the carboxylate ester. Thioesters play a crucial role in metabolism. A notable illustration of this is the metabolism of fatty acids. The main metabolite, acetyl coa, is an ester that is predominantly generated when pyruvate undergoes oxidative decarboxylation or when B acids are broken down.

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Answer:

Improvised health has been one of the main benefits of development. As humans, we need the primary aspects of life to keep us going. (food, water, oxygen) But scientificly we need health that will improve health. and Improved Health has been one of the main benefits of development. This benefit results partly from an increase in income and partly from scientific progress in the fight against disease and disability.

Answer: DNA sequencing methods employ chain termination nucleotides. Furthermore, if two chain-terminating nucleotides are employed in the same well, determining which strand is ended by which dideoxynucleotide will be impossible.

(its my own words, but i did search it to get this answer, hope it helps!)

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Temperature is 273 Kelvin and pressure is 1 bar.

Given - 10 mol of gas at STP

Temperature = ?

Pressure = ?

STP -  STP or Standard Temperature and Pressure, refers to the nominal atmospheric conditions at sea level. 0 degrees Celsius and 1 atmosphere are the respective temperatures and pressures. The STP value is essential for physicists, chemists, engineers, pilots, and navigators in addition to other specialists.

In order to report on the qualities of matter, standard conditions for temperature (T) and pressure (P) relate to a certain temperature and pressure. STP values are frequently applied in gas experiments.

STP was previously defined as follows by the International Union of Pure and Applied Chemistry (IUPAC):

It is 0 degrees Celsius outside (273.15 degrees Kelvin or 32 degrees Fahrenheit)

One atmosphere (101.325 kilopascal or 760 Torr)

This usage of the term has been dropped. However, the definition of the volume (V) term normal cubic meter continues to be often employed under these circumstances. The IUPAC has used a stricter definition of STP since 1982:

Absolute pressure: 105 Pa or 100,000 pascals (1 bar, 14.5 pounds per square inch, 0.98692 atm).

Hence, Temperature is 273 Kelvin and pressure is 1 bar at STP.

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So, sodium chloride and magnesium sulfate have different van't Hoff factors, and they do not have the same van't Hoff factor at a given temperature.For the given pair of substances, the answer is Option (b) Glucose and sodium bicarbonate.  

The van't Hoff factor (H) is defined as the change in the concentration of a substance that occurs when its temperature is raised by 1°C, at a constant pressure. The units of the van't Hoff factor are reciprocals of the molar concentration, i.e., 1/M.

For a given substance, the van't Hoff factor can vary depending on the temperature and the concentration of the solution. Therefore, we need to know the van't Hoff factors of both substances to determine if they have the same van't Hoff factor at a given temperature.

To find the van't Hoff factors of the given substances, we can use the following formula:

Δ[A] = [A] * H

where Δ[A] is the change in concentration of substance A, [A] is the initial concentration of substance A, and H is the van't Hoff factor.

Using the given information, we can find the van't Hoff factors for sodium chloride and magnesium sulfate as follows:

For sodium chloride, we have:

Δ[NaCl] = [NaCl] * H = 5.85 * 2.3 = 13.07 mol/L

Using the formula for the change in concentration of a solution, we can find the change in molarity (Δ[M]) of the solution as follows:

Δ[M] = Δ[NaCl] / [NaCl] = 13.07 / 58.5 = 0.22 mol/L

For magnesium sulfate, we have:

Δ[MgSO4] = [MgSO4] * H = 2.3 * 2.3 = 5.85 mol/L

Using the formula for the change in concentration of a solution, we can find the change in molarity (Δ[M]) of the solution as follows:

Δ[M] = Δ[MgSO4] / [MgSO4] = 5.85 / 2.3 = 2.62 mol/L

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The compound pairs that have a van't Hoff factor (i) of 2 are:

a. Sodium chloride (NaCl) and magnesium sulfate (MgSO₄).

The van't Hoff factor (i) represents the number of particles into which a compound dissociates in a solution. For compounds that do not dissociate, the van't Hoff factor is 1. In the given options, sodium chloride (NaCl) and magnesium sulfate (MgSO₄) both dissociate into ions when dissolved in water.

When NaCl dissolves in water, it dissociates into Na⁺ and Cl⁻ ions. Similarly, MgSO₄ dissociates into Mg²⁺ and SO₄²⁻ ions. Since both compounds dissociate into two ions, the van't Hoff factor (i) for both NaCl and MgSO₄ is 2.

On the other hand, glucose (C₆H₁₂O₆) does not dissociate into ions when dissolved in water, so its van't Hoff factor is 1.

Therefore, glucose and sodium (Na) do not form a compound pair with a van't Hoff factor of 2.

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Electrons tend to occupy the lowest available energy level.

This is in accordance with the Aufbau principle, which states that electrons fill orbitals in order of increasing energy levels. Electrons prefer to occupy lower energy orbitals because they are more stable, and therefore, require less energy to maintain their current state. The electron configuration of an atom describes the arrangement of its electrons in various orbitals.

The energy levels of electrons in atoms are described using the principal quantum number (n). The first energy level (n = 1) is the lowest energy level, and it is closest to the nucleus. As the value of n increases, so does the energy level of the electron, and the distance from the nucleus increases as well. In summary, electrons tend to occupy the lowest available energy level because they are more stable and require less energy.

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The product so formed for the given chemical reaction is  C₆H₅CH₂COCl.

When phenylacetic acid (C₆H₅CH₂COOH) is treated with SOCl₂, it results into  phenylacetyl chloride.

The chemical reaction is depicted as follows-

C₆H₅CH₂COOH + SOCl₂ → C₆H₅CH₂COCl

An acyl chloride (or acid chloride) is an organic compound with the functional group −C(=O)Cl. Their formula is usually written R−COCl, where R is a side chain. They are reactive derivatives of carboxylic acids (R−C(=O)OH). A specific example of an acyl chloride is acetyl chloride, CH₃COCl. Acyl chlorides are the most important subset of acyl halides.

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1.52 tanks of gas will be used to drive 1600 km.

A certain fuel-efficient hybrid car gets gasoline mileage of 55.0 mpg (miles per gallon).

A gallon is a unit of volume in both the US customary and imperial systems of measurement. The US gallon is defined as 231 cubic inches (3.785 liters).

1 mpg = 0.425143707 km/l; to convert miles per gallon to kilometers per liter .

mileage = 23.38 km/l

volume = 1600 km ÷ 23.38 km/l

volume = 68.43 liters; the amount of gasoline needed the trip

tanks = 68.43 l ÷ 45 l

tanks = 1.52

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A refrigerator delays the spoilage of food by slowing down the rate of chemical reactions within microorganisms. Therefore, option B is correct.

The term chemical reaction is defined as the processes, in which substances undergo a chemical change to formed new substances, with all new properties.

Higher temperatures often result in faster chemical reactions. When food is left on the kitchen counter, it can soon become bad. The process is slowed down by the refrigerator's lower temperature, which allows the same food to stay fresh for longer.

Bacteria, molds, and yeasts are all potential sources of microbial deterioration. Food's water activity plays a significant role in determining the type of food decomposition that results.

Thus, option B is correct.

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The cause of the difference in energy between the two conformations of trans-1,4-dimethylcyclohexane is due to steric strain. Steric strain is the repulsion between atoms or groups of atoms that are in close proximity to one another.

In the case of trans-1,4-dimethylcyclohexane, the two methyl groups are located on opposite sides of the ring and are in close proximity to one another, causing steric strain and a higher energy conformation. This is twice the difference in methylcyclohexane because there are two methyl groups causing steric strain instead of just one.

The lower energy conformation of trans-1,4-dimethylcyclohexane has the two methyl groups further apart from each other, reducing the steric strain and resulting in a lower energy conformation.

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Answer:

go with that persons

Explanation:

Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

Answer:

metal atoms lose electrons to form positive ions (cations ) non-metal atoms gain electrons to form negative ions (anions )

i agree with this answer from the person above me: Augustlonley

Explanation:

*throws leaves in his face* Hey you wake up!!

Answer:

-415.48°F (-248.60°C)

Explanation:

hoped this helped! <3 A brainiest is always appreciated! if this helped give a thanks and rating, i always try to reply to comments! have a nice day :)

Answer:

The 3rd answer or NCI is the correct answer

Explanation:

Hope this helps:)

Answer:

the 1st one

Explanation:

The overall charge of an atom is zero. Atoms are made up of positively charged particles called protons and negatively charged particles called electrons as well as non-charged particles called neutrons

Answer:

D. electron

Explanation:

They change the composition of matter to change the properties of matter.

There is matter all around you. All matter is made up of very small particles, including atoms and molecules. The objects you see and touch on a daily basis were constructed from those atoms. Anything that has mass and occupies space (has volume) is considered matter.

The quantity of matter in an item is its mass. A statue made of lead (Pb) or another little object with a lot of mass may be present. You might have a massive object with a small mass.

Additionally, you ought to be aware of the distinction between matter and weight. Weight is a measure of gravity's pull, whereas mass is a measure of the substance of an object.

Thus, They change the composition of matter to change the properties of matter.

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The max. theoretical Coeff. of Performance of a heat pump operating as a reversed cycle within R-134A saturation phase vapor-liquid dome, with min. pressure of 0.700 MPa and a max. pressure of 1.60 MPa, will be explained.

The Coefficient of Performance (COP) of a heat pump is a measure of its efficiency in transferring heat from a low-temperature reservoir to a high-temperature reservoir. The maximum theoretical COP of a heat pump operating within the given conditions can be determined using the Carnot cycle. The Carnot cycle represents an idealized reversible heat engine and heat pump.

In this case, the heat pump operates within the saturation 2 phase vapor-liquid dome of R-134A, which means that the refrigerant undergoes a phase change from vapor to liquid and vice versa during the cycle. The minimum pressure of 0.700 MPa and the maximum pressure of 1.60 MPa define the operating range of the heat pump.

To calculate the maximum theoretical COP, we need to consider the temperatures of the high-temperature reservoir (TH) and the low-temperature reservoir (TL). The COP is given by the equation\(COP = TH / (TH - TL)\). Since we are only provided with pressure information and not temperature, further data is needed to determine the exact COP value.

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**Check for proof photos at the bottom.**

**Answers are in bold.**

__________________________________________________________

If you decreased the volume of a sample of gas by a factor of three while maintaining a constant pressure, how would the absolute temperature of the gas be affected?  

✔ it would decrease threefold

A gas at 300 K and 4.0 atm is moved to a new location with a temperature of 250 K. The volume changes from 5.5 L to 2.0 L. What is the pressure of the gas at the new location?  

✔ 9.2 atm

What is the partial pressure of 0.50 mol Ne gas combined with 1.20 mol Kr gas at a final pressure of 730 torr?  

✔ 215 torr

__________________________________________________________

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?  

✔ it is decreased to one third of its original volume

Why might a rubber raft burst if it is left in the sun on a summer day?  

✔ temperature increases, causing interior pressure to increase

__________________________________________________________

Complete the table by filling in the missing information.  

✔ pressure, volume    A  

✔ temperature, moles of gas   B  

✔ Charles’s law    C  

✔ V = kT    D  

✔ temperature, pressure   E  

✔ P = kT    F  

✔ number of moles only    G

__________________________________________________________

Match one graph shown at right to each of the gas laws named below.  

Charles’s law  

✔ d

Gay-Lussac’s law  

✔ b

Boyle’s law  

✔ e

__________________________________________________________

Left answers:  

1.31 atm A

0.44  atm B

Right answers:  

✔ decreases it    

✔ decreases it  

0.12  atm C

__________________________________________________________

When decreasing a volume while maintaining the same pressure, the temperature will have to decrease. When volume decreases, particles get squished, increasing pressure. But when temperature decreases, particles move slower, decreasing pressure. The lowered temperature decreases pressure, but the decreased volume increases pressure, so pressure is able to stay constant.

About the 3 main gas laws covered in Edge:

Note that P=pressure, V=volume, and T=temperature. When given a problem, plug in the given values into the correct spots and solve for the unknown value.

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Answer

a c e f

Explanation: