what is the total pressure exerted by a mixture containing two gases if the partial pressure of one gas is 70 torr and the partial pressure of the other gas is 30 torr?

The point that marks the highest temperature and pressure at which it's possible to determine whether a sample of pure x is a liquid or a gas is called the critical point.

At the critical point, the substance can no longer be compressed into a liquid and expanding it does not result in vaporization. At this point, the temperature and pressure are at their highest and are called the critical temperature and critical pressure, respectively.

The critical point marks the boundary between the liquid and gas phases, and any further increase in pressure or temperature will result in a single homogeneous phase. The critical temperature and pressure are unique properties of each substance and can be used to identify and differentiate between different materials.

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According to Gay-Lussac's law,  the temperature of the fire at 39.3 atmospheres is 1350.82 Kelvin.

It is defined as a gas law which states that the pressure which is exerted by the gas directly varies with its temperature and at a constant volume.The law was proposed by Joseph Gay-Lussac in the year 1808.

The pressure of the gas at constant volume reduces constantly as it is cooled till it undergoes condensation .It is given as, P₁/T₁=P₂/T₂, thus T₂= 295.6×39.3/8.6=1350.82 kelvin

Thus, the temperature of the fire at 39.3 atmospheres is 1350.82 Kelvin.

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Gases are most ideal at high temperature and low pressure. We can infer that intermolecular forces are to blame for the real gas's lower pressure than the ideal gas's pressure.

Helium is the actual gas that behaves the most like an ideal gas. This is due to the fact that helium, unlike the majority of gases, only consists of a single atom, which minimizes the van der Waals dispersion forces.

Helium

The real gas that acts most like an ideal gas is helium. This is because helium has the lowest possible van der Waals dispersion forces because, unlike most gases, it only contains one atom. Another feature is that, like other noble gases, helium has an entirely full outer electron shell.

An ideal gas is one whose molecular volume and molecular force ratios are both so minimal that they have no impact on the behavior of the gas.

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Following are the answers:

1. 10.0 grams NaH dissolved in 2.000 kg of water:

  10.0 / (23.0 + 1.0) = 0.400 moles

   m = 0.400 moles / 2.000 kg = 0.200 m

2. 40.0 grams NaOH dissolved in 1500 grams of water:

    1500 grams = 1.500 kg

     40.0 / 40.0 = 1.000 moles

     m = 1.000 moles / 1.500 kg = 0.667 m

3.  80.0 grams NaOH dissolved in 1.000 kg of water:

    80.0 / 40.0 = 2.000 moles

    m = 2.000 moles / 1.000 kg = 2.000 m

4. 20.0 grams of NaOH dissolved in 2.000 kg of water:

   20.0 / 40.0 = 0.500 moles

    m = 0.500 moles / 2.000 kg = 0.250 m  

Molality is a measure of the concentration of a solution that expresses the number of moles of solute present in a specified mass of solvent, typically per kilogram of solvent. It is represented by the symbol "m" and is calculated by dividing the number of moles of solute by the mass of the solvent in kilograms.

Molality is commonly used in chemical and biological applications, as it provides a more accurate measure of solution concentration than other measures such as molarity, which is based on the volume of the solvent. Molality is particularly useful in situations where temperature changes could cause significant changes in the volume of the solvent, as it is independent of temperature.

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The molality is an important method to calculate the concentration of a solution. The molality of the given solutions are  0.209 mol kg⁻¹, 0.66 mol kg⁻¹, 2 mol kg⁻¹ and  0.25 mol kg⁻¹.

The molality of a solution is defined as the number of moles of the solute dissolved in 1 kg of the solvent. It is usually denoted by the symbol 'm'. The equation used to calculate the molality is:

m = Number of moles of the solute / Mass in kg of the solvent

n = Given mass / Molar mass

1. 10.0 / 23.9 = 0.41 moles

m = 0.41 / 2.0 = 0.209 mol kg⁻¹

2. 40.0 / 39.99 = 1. 0 moles

m = 1.0 / 1.5 = 0.66 mol kg⁻¹

3. 80.0 / 39.99 = 2.0 moles

m = 2.0 / 1.0 = 2 mol kg⁻¹

4. 20. 0 / 39.99 = 0.50

m = 0.50 / 2.0 = 0.25 mol kg⁻¹

Thus the molality of the given solutions calculated.

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Scenario A represents the experimental portion of the scientific method.

In scientific research, the experimental portion of the scientific method involves collecting data through observation and experimentation. In scenario A, the student is observing and testing a chemical compound in the lab. By noticing its physical properties, such as its appearance as a powder and smell like rotten eggs, the student is gathering data. This information will then be used to make conclusions and develop hypotheses. In this scenario, the student is gathering data and making observations that will ultimately be used to test and support or refute scientific theories. The experimental portion of the scientific method is a crucial step in the scientific process and helps to increase understanding and generate new knowledge.

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The mass of calcium chloride and water used are 166.426 g and 283.374 g respectively.

A solution containing two or more different components is termed as a solution mixture.

The percentage of calcium chloride in the mixture is 37.0% by mass.

This means that in each 100g of the mixture,  the mass of calcium chloride = 37.0 g

if the total mass of the mixture = 449.8g

the mass of calcium chloride and water used is calculated as:

mass of calcium chloride

= 37/100 × 449.8g

=166.426 g

And, the mass of water

=( 449.8- 166.426)g

= 283.374 g

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Boyles's law is one of the gas laws that describe the relationship between the pressure and volume of a given mass of gas at a constant temperature.

According to Boyle's law, a gas's pressure is inversely proportional to its volume when the gas is of a certain mass and maintained at a constant temperature. In other words, as long as the temperature and volume of the gas remain constant, the relationship between a gas's pressure and volume is inverse.

The equation of Boyle's law is given below:

P₁V₁ = P₂V₂

where;

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Titration is a method of chemical analysis where the quantity of a sample's constituents is determined. Therefore, the concentration of the original acid is 0.0021M.

Titration is a method of chemical analysis where the quantity of a sample's constituents is determined by adding a precisely measured amount of a different substance to which the desired ingredient will react in a specific, known proportion.

A burette, which is simply a long, graduated measurement tube with a stopcock as well as a delivery tube at its bottom end, is used to gradually administer a standard solution of titrating reagents, or titrant, to a specified concentration.

HBr+ KOH→ KBr + H[tex]_2[/tex]O

moles of KOH = 0.5 ×  150/100=1.50× 0.5 =0.75moles

at equivalence,

moles of HBr = moles of KOH

moles of HBr = 0.75moles

concentration of  HBr=  0.75/ 350= 0.0021M

Therefore, the concentration of the original acid is 0.0021M.

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A tank of compressed helium contains 50.0 g helium. 12.49 moles of helium are in the tank.

The term mole is defined as the amount of substance of a system which contains as many elementary entities.

One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.

The mole concept can be used to convert between mass and number of particles.

Number of moles = Mass / molar mass

= 50.0 / 4.003

= 12.49 moles

Thus, A tank of compressed helium contains 50.0 g helium. 12.49 moles of helium are in the tank.

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The  milligrams of vitamin c is contained in the aliquot is 74.45mg

The following equation may be used to determine the amount of vitamin C in the aliquot:

Concentration (mg/L) is calculated as follows:

[tex]\frac{(Titrant Volume (mL) x Normality x Vitamin C Molecular Weight (mg/mol)) }{Aliquot Volume (mL)}[/tex]

As a result, the amount of vitamin C in the aliquot is as follows:

[tex]\frac{5.00 mL }{ (5.50 mL x 0.1 x 176.12 mg/mol) }\\\\= 14.89 mg/L[/tex]

The aliquot's vitamin C content is therefore:

[tex]14.89 mg/L x 5.00 mL\\ \\= 74.45 mg[/tex]

74.45mg of  vitamin c is contained in the aliquot

A precise part of a sample or the whole amount of a liquid, as used in chemistry or other sciences (e.g. exactly 25 mL of water taken from 250 ml)

In pharmaceutics, an aliquot is a proportionate dilution of known inactive compounds that is used to measure chemicals below the sensitivity of a scale.

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complete question:An iodometric titration is performed on a 5.00 ml aliquot from a 100.0 ml volumetric flask containing a solution of vitamin c. the titrant volume is 5.50 ml when the solution turns a dark blue color. how many milligrams of vitamin c is contained in the aliquot

To calculate the milliliters of atropine needed, divide the dose ordered by the concentration of the solution. So, you would need to give 1.67 ml of the 0.30 mg/ml atropine solution intramuscularly.

When a physician orders a specific dose of atropine, such as 0.50 mg intramuscularly, it is necessary to determine the volume of the solution that should be administered. This calculation can be done by dividing the dose ordered by the concentration of the solution. In this case, if the atropine is available as 0.30 mg/ml, the calculation would be 0.50 mg ÷ 0.30 mg/ml = 1.67 ml. This means that 1.67 ml of the 0.30 mg/ml atropine solution would need to be given intramuscularly to meet the 0.50 mg dose ordered by the physician. This calculation is important to ensure that the correct dose of medication is given to the patient for optimal therapeutic effect

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The best way to conceptualize the HNO3 Lewis structure is as the NO3 with a H linked to one of the oxygen atoms.

This pattern is typical of several acids. Calculate the total number of valence electrons in the HNO3 molecule using its Lewis structure.

The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure. It is used to demonstrate how the electrons in a molecule are positioned around particular atoms. When two atoms are bonded together, electrons are depicted as "dots" or as a line.

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The vapor pressure of a non-volatile solute at 338 K

is 0.176 atm.

Calculate The value of the elevation in boiling point :

∆Tb= 384.6 K – 373.15 K = 11.45 K

Then calculate molality :

molality =∆ТЬ /Kb =11.45/ 0.51 = 22.45 m

A solution of 22.45 molal thus includes 22.45 moles of the solute in 1000 g of the solvent (water). The following step is to determine how many moles of water are present using the molar mass of water and the previously mentioned figure of 1000 g water:

Moles= 1000g /18g/mol=

The mole fraction of water solution :

mole of H20 solution= 55.6 : (55.6+22.45) =0.71

Then calculate The vapor pressure of a non-volatile solute at 338 K :

vapor pressure (at 384.6K) =0.2467 atm

vapor pressure (at 338K) = vapor pressure of pure water (at 384.6K) x Mole fraction of water

vapor pressure (at 338K) 0.2467 atm x 0.7123 = 0.176 atm

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The aqueous solution with the lowest freezing point and highest boiling point is 0.100 M sucrose.

Freezing point depression and boiling point elevation are directly proportional to the molality (moles of solute per kilogram of solvent) of a solution. Since 0.100 M sucrose has the highest concentration of solute, it will also have the greatest effect on both freezing point depression and boiling point elevation. NaCl, CaCl2, and Na3PO4 have similar molalities, so they will have similar effects on freezing point depression and boiling point elevation.A colligative property is a physical characteristic that depends on the quantity of solute supplied rather than the type of solute; for example, the freezing point will be lowered by the same amount of degrees Celsius whether we add 1000 sugar or salt particles to water.

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According to the law of definite proportions, the ratio of the masses of elements present in a chemical compound is always constant and does not vary with the amount of the compound.

Given that 18.02 g of water is decomposed by electrolysis to form 16.00 g of oxygen and 2.02 g of hydrogen, we can calculate the ratio of the masses of oxygen and hydrogen in water.

(a) The mass of hydrogen in water can be expressed as 2.02 g.

(b) The mass of oxygen in water can be expressed as 16.00 g.

Therefore, the masses, in grams, of (a) hydrogen and (b) oxygen in water are 2.02 g and 16.00 g, respectively.

In the case of water, the law of definite proportions states that the ratio of the masses of hydrogen and oxygen in water is always 1:8. This means that, for every 1 gram of hydrogen, there are 8 grams of oxygen in water. This ratio can be determined through experiments such as electrolysis, as described in the previous answer.

The law of definite proportions has important implications for our understanding of chemical compounds and their behavior. It helps us to identify and characterize different compounds and to predict their properties based on the elements they contain. It also forms the basis for the development of the atomic theory and the periodic table of elements.

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A responder can protect himself/herself from radiation by using shielding as a response action. Lighter elements (e.g., acrylic, plastic, and aluminum) are best for protecting against beta particles. Therefore, option c is the right choice.

Aluminum with a thickness of just a few millimeters provides the best protection against beta particles. However, low-atomic-mass materials such as plastic, wood, water, and acrylic glass are suitable for shielding high-energy beta-particle radiation.

The use of these materials in personal protective equipment, which includes all of the clothes that can be worn to avoid any injury or disease that may be caused by exposure to radiation, is another possible application of these materials.

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The correct option is A. If we triple the temperature and double the volume, what would the new pressure of the system be 20 atm.

Stress is pressure according to the unit region of the surface; the SI unit for strain is the pascal (Pa), described as 1 newton consistent with a square meter (N/m2). The pressure exerted by using an object is proportional to the force it exerts and inversely proportional to the vicinity on which the pressure is exerted.

The pressure applied is perpendicular to the floor of items per unit location. The simple system for pressure is F/A (force in step with the unit region). The unit of pressure is Pascals (Pa).  whilst sipping liquids from a straw, have you ever noticed that you honestly suck the air out of the straw at the same time as you sip the beverage, you’re honestly making use of ‘stress’. the quantity of force exerted (thrust) on a surface in step with the unit region is defined as ‘strain’. it may additionally be described as the ratio of the force to the region (over which the pressure is acting).

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Answer:

Explanation:

A steel plaque is attached to a block of wood. The steel and the wood have the same mass. After the steel plaque and the wooden block were left outside in the sun for a period of time, both the steel and the wood had increased in temperature, but the steel had a higher temperature than the wood.It’s possible that the steel plaque had a higher temperature than the wooden block because it__absorbed more heat from______ its surroundings.

If the steel and the wood received the same amount of energy from the Sun, then the specific heat capacity of the steel must be_less than

______ the specific heat capacity of the wood.

The steel plaque had a higher temperature than the wooden block because it has a lower specific heat capacity than wood.

Specific heat capacity is the amount of energy required to raise the temperature of one unit of mass of a substance by one degree Celsius. Substances with a lower specific heat capacity require less energy to raise their temperature than substances with a higher specific heat capacity.

Therefore, even if both the steel plaque and the wooden block received the same amount of energy from the sun, the steel plaque would still have a higher temperature because it required less energy to raise its temperature than the wood did.

In summary, the steel plaque had a higher temperature than the wooden block because it absorbed heat more efficiently from its surroundings, and the specific heat capacity of steel is lower than the specific heat capacity of wood.

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The use of another person's information without properly citing and recognizing it within your own work is known as plagiarism.

In technology, the term "data" refers to information that has been formatted in a way that makes it effective for transmission / processing. Data is information that has been binary-digitally changed for usage with modern computers and transmission technologies. The topic data may be expressed in both the plural and singular forms.

Information that has been transformed it into format that can be transmitted or processing is referred to as data in computing. Data is information that has been binary-digitally changed for usage with modern computers and transmission technologies.

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The vinegar is a solution of the acetic acid with the molar mass of 60.05 g/mol . The mass percent of the acetic acid in the vinegar is 3.33 %.

The chemical equation is :

2CH₃COOH  +  Ca(OH)₂   ---->   Ca(CH₃COO)₂   +   2H₂O

The molarity of  Ca(OH)₂   = 0.100 M

The volume of  Ca(OH)₂   = 0.03110 L

The number of moles = molarity × volume

                                    = 0.100 × 0.03110

                                    = 0.00311 mol

The moles of acetic acid = 2 × 0.00311

                                          = 0.0062 mol

The mass of the acetic acid = moles × molar mass

                                              = 0.0062 × 60.05

                                             = 0.37 g

The mass of the vinegar = 11.1 g

The mass percent of acetic acid = (0.37 / 11.1 ) × 100 %

                                                      = 3.33 %

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In a chemical equation, reactants are substances before the reaction, subscripts are numbers added in front of chemical formula, chemical formula is representation of elements in compound,products are substances present after chemical reaction, coefficients are numbers showing the amount of individual atoms.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

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A mixture has a mas of 450 grams. Of that mixture,35 grams is sulfur . Therefore, 11% is the percentage of sulfur in the mixture.

The mass percent equation is defined as the mass of each element in one mole of the compound, as well as the molar mass. With these masses, you can calculate each element's mass proportion.

In order to represent the mass percent of a solution, the kilograms of solute are divided by the kilograms of solution, and the result is multiplied by 100.

percentage of sulfur = mass of sulfur/ mass of mixture×100

mass of sulfur= 5 grams

mass of mixture =450 grams

substituting all the given values in the above equation, we get

percentage of sulfur = 5 / 450=0.011×100= 11%

Therefore,  11% is the percentage of sulfur in the mixture.

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2 moles  of carbon dioxide would be contained in 6.0 L at 132.0 kPa and 47°C. This law is a generalization that includes both Boyle's and Charles' laws.

The ideal gas, sometimes known as the perfect gas, is a gas that, in physical behavior, corresponds to a certain idealized connection between pressure, volume, speed temperature known as the perfect, or general, gas law.

This law is a generalization that includes both Boyle's and Charles' laws as special instances, and it asserts that for a given quantity of gas, the product of volume V and pressure P is proportional to absolute temperature T; that is, PV = kT, where k is a constant. This type of relationship for a material is known as its equation of state, and it is adequate to define its gross behavior.

P×V= n×R×T

substituting all the given values in the above equation, we get

132.0×6.0 = n×8.314×47

n = 2 moles

Therefore,  2 moles of carbon dioxide would be contained in 6.0 L at 132.0 kPa and 47°C.

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The correct answer is

The 8.48 X 10^-24 atoms/cm^3 of Fe particles are present.

A solid will have a certain density at ambient temperature and atmospheric pressure. The material's mass per unit volume is used to determine density. You may calculate it by dividing the object's total mass, M, by its total volume, V: =M/V. Simply said, solid masses have a high density due to the close proximity of their particles, liquid masses have a little lower density, and gas masses have a very low density due to the distance between their particles.

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The atomic symbol format "xza" consists of three components:

X: The element's chemical symbol, which is typically a one- or two-letter abbreviation of the element's name.

Z: The atomic number of the element, which is the number of protons in its nucleus.

A: The atomic mass of the element, which is the total number of protons and neutrons in its nucleus.

Of these three components, only the atomic number (Z) can be used alone to determine the identity of an element, as it uniquely defines the element and its place in the periodic table. The chemical symbol (X) can also be used to identify an element, but only in conjunction with a periodic table, as some elements have similar symbols. The atomic mass (A) provides information about the mass of the element's nucleus, but does not allow for a unique determination of the element's identity.

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Complete question:

Which of the components of the atomic symbol format xza can be used alone to determine the identity of an element? select all that apply

A. The letter "x"

B. The letter "z"

C. The letter "a"

D. None of the above

The reaction between 38.7 g of CH4(g) and O2(g) to form CH3OH(g) releases 890 kJ of heat at constant pressure.

When 38.7 g of CH4(g) reacts completely with O2(g) to form CH3OH(g), the reaction releases a certain amount of heat. This amount of heat can be calculated by using the balanced chemical equation for the reaction and the heat of the reaction (ΔH). The balanced equation for the reaction is CH4(g) + 2O2(g) -> CH3OH(g) + heat. The heat of reaction, which represents the amount of heat released or absorbed in a chemical reaction, can be found in a thermochemistry table or calculated using other thermochemical relationships. In this case, the heat of the reaction is 890 kJ. This means that when 38.7 g of CH4(g) reacts completely with O2(g) to form CH3OH(g), 890 kJ of heat is released at constant pressure.

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About equal amounts are contributed by each encounter. The hydrophobic effect, or the of unsaturated R groups inside the protein core and away from the solvent water, is a crucial factor in protein stability.

Water is a material that exists in gaseous, liquid, and solid phases and is made up of the essential elements hydrogen and oxygen. One of the prevalent and necessary substances is it. It is a colorless, odorless liquid at room temperatures with the crucial property of dissolving several other compounds.

Due to its low viscosity, which is caused by the relatively weak connections between its molecules, water is moist in the sense that it flows readily.

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The molecular formula for a polymer made by linking three fructose molecules [tex]C_6H_{12} O_6[/tex] together by a dehydration synthesis reaction is n[tex]C_6H_{12} O_6[/tex], where n represents the number of fructose units in the polymer.

The dehydration synthesis reaction between three fructose molecules forms a glycosidic bond, which eliminates a molecule of water and results in the formation of a single molecule with three fructose units. The molecular formula for the polymer will depend on the number of fructose units linked together, but in general, the molecular formula for a polymer made by linking multiple fructose molecules together will be n [tex]C_6H_{12} O_6[/tex], where n represents the number of fructose units in the polymer.

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c. 3 moles. The three moles of KBr we can expect when You mix 2 moles of HBr with 3 moles of KOH in enough water to make 1 L of solution.

The pH of a solution will range from 0 to 14. Solutions having a pH of 7 are referred to as neutral. If the pH is lower than 7, the solution is acidic. When the pH level is higher than 7, the solution is basic.

When a weak base and its salt are combined with a strong acid, basic buffer—which has a basic pH—is created. The pH of an equal mixture of ammonium hydroxide and ammonium chloride in water is 9.25. They contain the weak base and the weak base salt.

During prolonged, high-intensity exercise, lactate acts as a temporary "neutralizer" or "buffer" to the cell's increased proton accumulation. Since increased lactate synthesis and acidity go hand in hand, lactate testing is a great "indirect" indicator of the cell's metabolic state.

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To find the number of moles of gas in the new volume of 650.0 ml, we need to use the Ideal Gas Law equation. Therefore, the number of moles in the new volume of 650.0 ml is 0.200 moles.

The Ideal Gas Law states that the pressure, volume, and temperature of a gas are directly proportional to the number of moles of gas present, as long as the temperature is kept constant. Mathematically, this can be represented as PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin. Since the temperature and pressure are constant in this problem, we can use the Ideal Gas Law to calculate the number of moles of gas present in the new volume.

By substituting the known values into the equation, we can solve for the new number of moles:

PV = nRT

(P)(650.0 ml) = (0.200 moles)(R)(T)

Dividing both sides by RT gives:

V = (n/P)RT

V = (0.200 moles/P)RT

V = (0.200 moles/P)(650.0 ml)

Hence, the number of moles in the new volume of 650.0 ml is 0.200 moles.

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