The total pressure exerted by the gas mixture is 74 kPa.
What is hydrogen?Hydrogen is an odorless, colorless, and tasteless gas that is the most abundant element in the universe. It is the lightest of all elements and is a component of many compounds, such as water and hydrocarbons. Hydrogen has the highest energy content of any common fuel, making it an attractive energy source. Additionally, it is utilised in the manufacture of fertiliser, polymers, and pharmaceuticals as well as a propellant.
This is calculated by adding up the partial pressures of each individual gas in the mixture, which in this case is 20 kPa for oxygen, 40 kPa for nitrogen, and 14 kPa for hydrogen. 20 + 40 + 14 = 74
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6.0 mol Al reacts with 4.0 mol O2 to form Al2O3.
4A1+30₂ → 2Al₂O3
How many moles of Al2O3 form when 4.0 mol Al reacts?
2 moles of Al₂O₃ will be produced when 4 moles of Al reacts in accordance with the above equation.
How to calculate moles using stoichiometry?Stoichiometry refers to the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
According to this question, 6.0 moles of Al reacts with 4.0 mol of oxygen gas to form Al₂O₃ as follows:
4Al + 30₂ → 2Al₂O₃
Based on the above equation, 4 moles of Al reacts to form 2 moles of aluminium oxide.
This means that 4 moles of aluminium will produce 4 × ²/4 = 2 moles of aluminium oxide.
Therefore, 2 moles of Al₂O₃ will be produced by 4 moles of aluminium.
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Why don't we draw a double bond between the Be and Cl atoms in the Lewis structure for BeCl2? a. That would give each Cl a positive formal charge and the Be a negative formal charge b. There aren't enough electrons in the molecule to do so. c. That would result in an expanded octet for beryllium.
d. That would result in an expanded octet for chlorine.
Lone electron pairs are absent from the Be atom. A negative formal charge would be placed on the Be atom as a result of the double bonds existing between it and the Cl atom.
Why is it necessary to go over the formal charges that each atom has in the Lewis diagram?When compared to an isolated neutral atom, the number of electrons that are attached to an atom in a molecule determines its formal charge.
Why is the octet rule broken by becl2?The octet rule is broken by B e C l 2, as the boron should be in a valence state that enables it to attach to three chlorines. However, in this molecule, the boron is joined by six electrons.
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The following reaction shows the products when sulfuric acid and aluminum hydroxide react.
2Al(OH)3 + 3H2SO4 → Al2(SO4)3 + 6H2O
The table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory.
What is the approximate amount of the leftover reactant?
11. 73 g of sulfuric acid
10. 33 g of sulfuric acid
11. 12 g of aluminum hydroxide
13. 67 g of aluminum hydroxide
The remaining reactant (Aluminum Hydroxide) weighs approximately 11.73 g.
Hence, Option A is correct.
Al(OH)3 has a molar mass of 78 g.H2SO4 has a molar mass of 98 g.Given:Al(OH)3 mass = 30gH2SO4 mass = 35gAl number of moles (OH)3 = 30/78 =0.385H2SO4 mole number = 35/98 = 0.357The provided reaction states that 2Al(OH)3 + 3H2SO4 Al2 (SO4)3 + 6H2OAl, 2 moles (OH)H2SO4 is equal to 3 moles.Al 1 moles (OH)H2SO4 is equal to 3/2 moles.Al 0.385 moles (OH)0.578 moles of H2SO4 are equal to 3 = (3/2) x 0.385 moles of H2SO4.But the amount of H2SO4 is only 0.357 moles.H2SO4 is the limiting reagent as a result.Al(OH)3 is produced when 0.357 moles of H2SO4 react with = 2/3 x 0.357 moles of Al(OH)3.Al(OH)3 leftovers are therefore 0.147 moles (0.385 - 0.238 moles).Al(OH)3 has a molecular weight of 78 g, hence 78 x 0.147 g is one mole.= 11.43 g11.73 g of Al(OH)3 will be left behind as a result.To know more about limiting reagent here
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The pressure of hydrogen sulfide gas in a container is 35,650Pa. What is this pressure in torr (1 atm = 101,325 Pa = 760torr)?A. 46. 91 torrB. 267. 4 torrC. 351. 8 torrD. 3612torrE. 27,090 torr
In a container, the pressure of hydrogen sulfide gas is 267.4 torr.
What is pressure?The force of all gas particle/wall collisions divided by the area of the wall is defined as pressure (P): Pressure is one of the primary observable quantities of this phase of matter; it is exerted by all gases. The amount of force exerted per area is described as pressure. Pressure is defined as force divided by area. The pressure from snow on a roof, for example, would equal the weight of the snow divided by the area of the roof. In chemistry, pressure is often generated by gases. When you blow up a balloon, you fill it with gas.
Here,
pressure of hydrogen sulfide gas= 35650 Pa
1 torr=133.33 Pa
=35650/133.33
=267.38 torr
The pressure of hydrogen sulfide gas in a container is 267.4 torr.
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The half-life of cobalt-60 is 5.20 yr. How many milligrams of a 1.000-mg sample remain after 7.55 years
Cobalt-60 has a half-life of 5.20 years, which means that half the sample will be present after that time.
What is cobalt?The chemical element cobalt has the atomic number 27 and the symbol Co. It is a naturally occurring hard, glossy, silver-gray metal that is found in rocks and soils. Cobalt is magnetic when it is pure, and it can be used to make alloys, magnets, and colours. Additionally, it is employed in the manufacture of batteries, catalysis, and pharmaceuticals. The production of vitamins and proteins depends on cobalt, a trace mineral that is crucial for maintaining human health.
After 7.55 years, about 0.78 of the original 1.000 mg sample will remain.
Therefore, 0.78 x 1.000 mg = 0.780 mg will remain after 7.55 years.
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Suppose that a chemist combines 231 mL of methane and 907 mL of chlorine at STP in a 2.00 L flask. The flask is then allowed to stand at 298 K. If the reaction reaches 75.9% completion, what is the total pressure in the flask
The total pressure in the flask is 1.320 times the total pressure.
What is pressure?Pressure is an important concept in chemistry, as it affects the physical behavior of gases and solids, and the rates at which reactions occur. Pressure is a measure of the force applied to an area, typically expressed in units of atmospheres (atm), or kilopascals (kPa).
Methane :
Mole fraction of methane = (231 mL / 2.00 L) = 0.1155
Partial pressure of methane = 0.1155 * Ptotal
Chlorine:
Mole fraction of chlorine = (907 mL / 2.00 L) = 0.4535
Partial pressure of chlorine = 0.4535 * Ptotal
Products:
Mole fraction of products = (75.9% com) = 0.759
Partial pressure of products = 0.759 * Ptotal
Total pressure = 0.1155*Ptotal + 0.4535*Ptotal + 0.759*Ptotal = 1.320*Ptotal
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how many liters of water can be made from 55 grams of oxygen gas and an excess of hydrogen at a pressure of 12.4 atm
At a pressure of 12.4 atm and a temperature of 850 c, 8.2 liters of water can be created from 55 grams of oxygen gas and an excess of hydrogen.
first, we need the no.of moles of O2 = mass/molar mass of O2
= 55 g / 32 g/mol
= 1.72 mol
from the balanced equation of the reaction:
2H2 (g) + O2(g) → 2H2O(g)
we can see that the molar ratio between O2: H2O = 1: 2
So we can get the no.of moles of H2O = 2 * moles of O2
= 2 * 1.72 mol
= 3.44 mol
So by substitution by this value in the ideal gas formula:
PV = nRT
when P = 12.4 atm & n H2O = 3.44 mol & R= 0.0821 & T = 85 + 273=358K
12.4 atm *V = 3.44 * 0.0821 * 358 = 8.15 L
∴ V ≈ 8.2 L
In the physical sciences, pressure is defined as the perpendicular force per unit area or stress at a point within a confined fluid. The pressure exerted on a floor by a 42-pound box with a bottom area of 84 square inches is equal to the force divided by the area over which it is exerted, or one-half pound per square inch.
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A 50.0 mLmL sample of 0.200 MM sodium hydroxide is titrated with 0.200 MM nitric acid. Calculate the pHpH in the titration after the addition of 60.0 mLmL of 0.200 MHNO3MHNO3 .
A rough estimate of the excess pH of the solution is 1.74.
The answer to the question is that the concentration of NaOH is 0.2 M.
The question also states that the concentration of HNO3 is equal to that of NaOH, which is 0.2 M.
The volumes of sodium hydroxide and nitric acid that are provided to us are 50 mL and 60 mL, respectively. This implies that adding the two will result in the final volume.
= 50 plus 60 equals 110, or 0.11 liters
We know that there is a neutralizing reaction between NaOH and HNO3 based on theory. Then, as a means of answering the question, we record the aforementioned equation.
OH⁻ + H⁺ ---> H₂O
Finally, we apply logarithm to get our final answer
pH = - log [ H⁺ ]
pH = - log [0.01818]
pH = 1.74
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Would greatly appreciate the help
9.0 mol Na2S reacts with 8.0 mol
CuSO4 according to the equation below:
Na2S + CuSO4
→
Na2SO4 + CuS
Considering only the 8.0 mol CuSO4,
how many moles of CuS form?
? mol CuS
Round your answer to the tenths place.
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 8.0 mol of CuS form when 8.0 mol CuSO[tex]_4[/tex] reacts.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. The stoichiometry represents the number of moles.
Na[tex]_2[/tex]S + CuSO[tex]_4[/tex]→ Na[tex]_2[/tex]SO[tex]4[/tex] + CuS
moles of Na[tex]_2[/tex]S =9.0 mol
moles of CuSO[tex]_4[/tex]=8.0 mol
Since CuSO[tex]_4[/tex] is limiting reagent
moles of CuS=8.0 mol
Therefore, 8.0 mol of CuS form when 8.0 mol CuSO[tex]_4[/tex] reacts.
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Tooth enamel, or hydroxyapatite, is an essential part of the tooth structure. Its composition is 39. 8% calcium,
18. 5% phosphorous, 41. 43% oxygen, and 2% hydrogen. What is the empirical formula? It has a molar mass of
1004 g/mol. What is the molecular formula of this compound?
The empirical formula of this compound is Ca3(PO4)2.
What is an Empirical formula?
An empirical formula is a type of chemical formula that shows the simplest ratio of atoms in a molecule, rather than the total number of atoms. It is the simplest possible chemical formula that shows the relative numbers of each type of atom in a molecule.
The molecular formula is Ca3(PO4)2•H2O, which indicates that the compound is composed of three calcium atoms, two phosphate atoms, and two water molecules. The molar mass of this compound is 1004 g/mol, which is two times the molar mass of the empirical formula (502 g/mol). Therefore, the molecular formula of this compound is Ca3(PO4)2•H2O.
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The movement of the liquid in a thermometer shows changes in temperature. An increase in temperature indicates the molecules in the liquid (A) moved slower and closer together (B) contracted in size when heated (C) moved faster and spread farther apart (D) expanded in size when heated
(C) moved faster and spread farther apart
An increase in temperature indicates the molecules in the liquid move faster and spread farther apart. The mercury thermometer was named after physicist Daniel Gabriel Fahrenheit in Amsterdam. Mercury thermometers are useful in many ways such as measuring body, liquid, and vapor temperature. The movement of the liquid in a thermometer shows changes in temperature. With an increase in temperature shows the molecules in the liquid are moving faster and the temperature is rising in the thermometer. The mercury expands to indicate a higher temperature up the tube which is marked in order to recognize a measurement of temperature. Mercury thermometers are rare today as most of them are toxic nowadays. A Mercury thermometer consists of a bulb containing mercury attached to a glass tube; the volume of mercury in the tube is much less than the volume in the bulb.
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Classify: Drag out different combinations of molecules in the Gizmo and categorize them. Give at least three examples of molecule combinations for each intermolecular force.
Dipole-dipole forces
Dipole-induced dipole forces
London dispersion forces
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What are the 3 types of elements?
The three types of elements are metals, non-metals as well as metalloids, there are placed in a periodic table.
In a periodic table, metals are placed in s-block and d-block. While non-metals as well as metalloids are placed in p-block. Metals are generally lustrous, malleable as well ductile in nature and are usually hard in nature while non-metals lack these properties. Metalloids are the elements whose chemical as well as physical properties lies between both metals and non-metals. Examples of metals are sodium and potassium. Examples of non-metals are carbon and phosphorus while examples of metalloids are silicon and germanium.
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what will be the hexadecimal value of al after these instructions execute? mov al,0cfh and al,2bh
0Bh will be the hexadecimal value of AL (Aluminium)after these instructions execute
#D9DAD9 is the hex code for aluminum. (217, 218, 217) are the corresponding RGB values, indicating that it is made up of 33% red, 33% green, and 33% blue. Printers employ the CMYK color coding, which are C:1 M:0 Y:1 K:15. Aluminum has a brightness value of 85%, a saturation value of 0%, and a hue value of 120° on the HSV/HSB scale.Hexadecimal is the most practical number system to work with when dealing with long strings of numbers due to its compactness, aligned correspondence of 4 bits to 1 symbol, and freedom from the need to perform multiplication and addition when switching between bases (compare switching from binary to decimal and back).
complete question:What will be the hexadecimal value of AL after these instructions execute?
mov al, 0CFh
and al, 2Bh
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Iron has a BCC crystal structure, an atomic radius of 0. 124 nm, and an atomic weight of 55. 85 g/mol. Compute its theoretical density
Iron has a BCC crystal structure, an atomic radius of 0. 124 nm, and an atomic weight of 55. 85 g/mol. its theoretical density is 7.9 g /cm³.
The molar mass of the iron = 55.85 g/mol
The atomic radius = 0.124 nm
the edge length is given as :
a = (4r) / √3
a = ( 4 × 0.124 × 10⁻⁷ cm ) / √3
a = 2.86 × 10⁻⁸ cm
The density is given below :
density = ( Z × M ) / Na × a³
density = ( 2 × 55.85 ) / (6.023 ×10²³) × ( 2.86 × 10⁻⁸ )
density = 7.9 g/cm³
Thus the theoretical density is 7.9 g/cm³.
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A certain solution contains 4.34.34, point, 3 grams of salt per liter. How much salt is there in 111111 liters of the solution
A certain solution contains 4.3 grams of salt per liter. the salt is there in 11 liters of the solution is 47.3 grams.
The solution contains = 4.3 grams salt per liters
in one liters the solution contains = 4.3 grams of the salt.
the salt in the 11 liters = ?
so, in one liter in contains = 4.3 grams
in 11 liters it will contains = 4.3 × 11
= 47.3 g
the round off answer to the solution is 47.3 g.
Thus the amount of the salt in the 11 Liters of the solution is the 47.3 g.
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Why were the authors interested in determining the strength of the hydrogen bond in solution as opposed to in a vacuum
This is because intermolecular forces have a greater effect in a solution when bonding is present than in a vacuum when bonding is not present.
The attracting and repellent forces that develop between the molecules of a substance are known as intermolecular forces or IMF for short. Individual molecules of a substance interact with one another through the mediation of these forces.
Most of the physical and chemical features of matter are caused by intermolecular forces.
An intermolecular force is an attractive force that develops between the protons or positive parts of one molecule and the electrons or negative parts of another molecule. This force affects a substance's many physical and chemical properties. The strength of a material's intermolecular forces directly relates to the boiling point of that substance; the stronger the intermolecular forces, the higher the boiling point.
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diatomic elements are important. what makes them different from other elemental substances?
Atoms follow the octet rule, which makes them more stable in pairs.
The diatomic elements oxygen and nitrogen have a slightly more complex structure. There is a double bond between the two O atoms in the O₂ dot structure. And there is a triple bond between the two N atoms in the N₂ dot structure. Diatomic elements are elements that are never found alone in nature. It is always bound to another atom. The diatomic state of this atom is much more stable than its unbonded state.
Everything around us contains energy, even if it doesn't move. All molecules and atoms have spins and vibrations, but these are all internal forces.
All atoms try to reach the lowest potential. Atom has a state of lower energy, implying maximum stability under certain external conditions.
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Calculate the mass of metal oxide produced during the decomposition of 1280 g of 77.5% pure magnesium carbonate!
Decomposition of one mole of magnesium carbonate (84 g) produces one mole of magnesium oxide (40 g). Thus, 1280 g of magnesium carbonate will produce 609 g of MgO.
What is magnesium carbonate?Magnesium carbonate is an ionic compound formed by donation of two electrons from magnesium metal to the carbonate group.
The decomposition reaction of magnesium carbonate is written below:
[tex]\rm MgCO_{3} \rightarrow MgO + CO_{2}[/tex]
As per this reaction, one mole of magnesium carbonate produces one mole of MgO.
molar mass of MgCO₃ = 84 g/mol
molar mass of MgO = 40 g/mol
84 g of MgCO₃ gives 40 g of MgO. Then the mass of MgO produced by 1280 g of MgCO₃ is:
mass of MgO = (1280 × 40)/84 = 609 g.
Therefore, the mass of MgO produced is 609 g.
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Explain the similarities and differences between putting a beaker of ethanoic acid in the refrigerator and mixing it with sodium carbonate. Use these words: chemical,physical, reversible, irreversible.
When a beaker of ethanoic acid is placed in the refrigerator and mix it with sodium carbonate, its temperature drops down and endothermic reaction take place.
[tex]2CH_{3} COOH + NaCO_{3}[/tex] ⇒ [tex]CH_{3}COONa + NaHCO_{3}[/tex]
This chemical reaction is a reversible reaction.
Similarities:Ethanoic acid and sodium carbonate combine to form an endothermic reaction that results in fizzing as carbon dioxide is released and heat is lost to the environment, making the reaction vessel feel chilly to the touch.
Differences:The difference between adding sodium carbonate to the solution and refrigerating ethanoic acid is that no new substance is created in the former. When the substance is taken out of the refrigerator, it is still ethanoic acid. New chemicals are created in the latter scenario. Because of a chemical process, the material is no longer ethanoic acid.
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if you start with 5 grams of carbon on the reactant side how many grams of carbon should you start with
Based on the provided information, the number of grams of carbon should you end with is 5g.
If you start with 5 grams of carbon on the reactant side, the grams of carbon you should end with 5g based on the law of conservation of mass. The law of conservation of mass, also known as principle of mass conservation postulate that for any system closed to all transfers of matter and energy, the system mass must remain constant over time, as the mass of system cannot change, so quantity can neither be added nor be removed. Hence, the law states that mass is neither created nor destroyed in a chemical reaction. Hence, the grams of reactants that one starts with, one will end with the same amount. Chemicals recombine to give a different compound in the product, the mass is still always conserved.
Note: The question is incomplete. The complete question probably is: If you start with 5 grams of carbon on the reactant side, how many grams of carbon should you end with?
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An 80.0-gram sample of water at 10.00C absorbs 1680 Joules of heat energy. What is the final temperature of the water
108°C is the final temperature of the water after absorption of 1680 Joules of heat energy.
What is temperature?Temperature is a physical quantity used to measure the average kinetic energy of molecules in matter. This is measured with a thermometer or other device that measures the average kinetic energy of the molecules within the substance. The terms Celsius (°C), Fahrenheit (°F), or Kelvin are commonly used to describe temperature (K). Temperature can affect the physical state of matter.
By rearranging the equation gives:
ΔT = q/mc
Plugging in the given values,
ΔT = 1680/ (80.0 g × 4.184 J/g·C)
= 98°C.
Since the initial temperature was 10°C, the final temperature is:
ΔT = T₂ - T₁
98°C = T₂ - 10
T₂ = 108°C
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Please help me thank u sm
The amount of suplher in grams to rpoduce 25.9 kJ energy= 10.95g
Here the reaction is,
S(s) + 2CO(g)
Hrxn=-75.8 kJ energy.
Answer,
The amount of Sulpher in grams to produce 25.9 kJ energy= xg=?
We know that 1mole Sulpher results in the production of \ bigtri angle up Hrxn=75.8 kJ/mol energy.
25.9 kJ of energy produced from how many grams of sulpher= 25.9 kJ / 75.8 kJ/mol = 25.9g/75.8g/mol
=0.34 mol of sulpher
The amount of 0.34 moles of sulpher in grams= Number of moles * Molar mass
( Molar mss of Sulpher= 32.06g'/mol)
= 0.34mols * 32.06g /mol
=10.95 g
The amount of suplher in grams to rpoduce 25.9 kJ energy= 10.95g
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A student has a 5. 00 gram sample of calcium chloride (CaCl2) solid. How many miles of calcium chloride are contained in this sample
0.0450 moles of calcium chloride are contained in this sample
A mole of every substance weighs the same as its molecular mass and contains the same number of particles, according to Avogadro's law.
Utilizing the equation, we can determine the moles.
Number of moles= Given Mass/ Molar Mass
Number of Moles = [tex]5.00 mg / 110.98 g/mol = 0.0450 moles[/tex]
Thus there are 0.0450 moles of [tex]Cacl2[/tex]
The mole is the volume of a substance that contains exactly as many molecules, atoms, radicals, ions, or electrons as there are in 12 grams of 12C.
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What is the most common irony?
In literary classes, the three most popular types are verbal irony, dramatic irony, and situational irony. When a speaker or narrator says something that contradicts what they mean, what they intend, or what the context necessitates, this is called verbal irony.
What is irony?One thing is expressed while another is meant in an ironic statement. For example, on a chilly, wet gray day, you would exclaim, "What a gorgeous day!" Alternatively, if you were suffering from a severe case of food sickness, you may respond, "Wow, I feel terrific today." "ffers points of view and ideas that are, at most, intriguing... However, it does not reach the truth." Ronagh and Souder are particularly concerned with scientific assertions that are not meant to be taken seriously.
Here,
The three most common varieties in literary studies are verbal irony, dramatic irony, and situational irony. Verbal irony occurs when a speaker or narrator says something that contradicts what they mean, what they intend, or what the context requires.
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15.0 L of an ideal gas at 298 K and 3.36 bar are heated to 350 K with a new pressure of 4.90 atm. What is the new volume in litres
The new volume in litres is 13.29 L.
Given,
Temperature 1 (T₁) = 298 K
Volume 1 (V₁) = 15 L
Temperature 2 (T₂) = 383 K
Pressure 1 (P₁) = 3.36 atm
Pressure 2 (P₂) = 4. atm
By Ideal Gas Equation,
P₁V₁/T₁ = P₂V₂/T₂
⇒ (3.36*15)/298 = (4.90*V₂)/383
⇒50.4/298 = 4.90V₂/383
⇒ (50.4*383) / (298*4.90) = V₂
⇒ 19303.2/1460.2 = V₂
⇒13.29 L = V₂
New Volume will be 13.29 L.
Ideal gas law is a precise approximation of the behavioral of several gases under various situations in thermodynamics. The Ideal Gas Equation is a mathematical formula that combines empirical laws such as Charle's law, Boyle's law, Gay-law, Lussac's and Avogadro's law.
The equation characterizing the states of hypothetical gases stated mathematically by combinations of empirical or physical constants is known as the Ideal Gas Equation. It's also known as the universal gas equation. It is defined as follows:
"The ideal gas law seems to be the equation of state for a fictitious perfect gas. It is a decent approximation of the behavioral of various gases under numerous situations, while it has significant limitations".
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Which of the following geometries for the complex ion [Co(en)(H2O)4]2+ are possible?
Check all that apply
O trigonal bipyramidal or square pyramidal
O octahedral
O linear
O tetrahedral or square planar
O trigonal planar
Geometry for the complex ion [Co(en)(H2O)4]2+ that are possible is : Octahedral.
What is octahedral molecular geometry?A compound with six atoms or groups of atoms or ligands grouped symmetrically around a central atom and defining the vertices of the octahedron represents the shape of an octahedron in chemistry and is known as an octahedral molecular geometry (also known as a square bipyramid).
The prefix is octa because the octahedron has eight faces. Octahedral bond angle values between 90° and 180° are what determine the octahedral shape. The angles between each of the four atoms that make up the square bases of the two pyramids of the octahedral structure and one of the apex atoms are both 90 degrees.
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Choose correct reagent(s) for the conversion below q2 A. a) propyl bromide / AlCl3 b) NBS B. a) propyl bromide / AlCl3 b) Br2 / heat or light C. a) propanoyl chloride with (1) AlCl3 and (2) H2O b) NBS D. a) propanoyl chloride with (1) AlCl3 and (2) H2O b) Br2 / heat or light E. a) Br2 / FeBr3 b) (propyl)2CuLi c) Br2 / light or heat
D. a) propanoyl chloride with (1) AlCl3 and (2) H2O b) Br2 / heat or light.
What is a reagent?
A reagent is a substance that is used in a chemical reaction to detect, measure, examine, or produce other substances. Reagents are used in many different industries, including pharmaceuticals, environmental testing, and materials science. Reagents can be in the form of a solid, liquid, or gas, and are generally made from a combination of elements, compounds, or mixtures.
a) The reaction of propanoyl chloride with AlCl3 and H2O can be represented as follows:
AlCl3 + H2O + Propanoyl Chloride → Al(OH)3 + HCl + Propanoic Acid
This reaction involves substitution of the chlorine atom in the propanoyl chloride molecule with a hydroxide ion from the AlCl3/H2O mixture.
b) Br2 / heat or light cannot be used to react with propanoyl chloride, as this reaction would require the breaking of the carbon-chlorine bond. This is not possible using Br2 / heat or light.
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Using the thermodynamic data provided below, calculate the standard change in entropy when one mole of sodium nitrate is dissolved in water?
S° (J/K•mol)
NaNO3(s) 116.3
Na+(aq) 60.25
NO3–(aq) 146.4
Will the solubility of sodium nitrate increase or decrease if the temperature of the system is increased?
Thermodynamic data is data that relates to the physical properties of a system related to temperature, pressure, and energy.
What is Thermodynamic data?
Thermodynamic data is data that describes the physical properties of a material system in terms of temperature, pressure, and other thermodynamic variables. It is used to predict the behavior of materials in different conditions and to analyze processes such as heat transfer or chemical reactions. It is also used to design and optimize energy systems, such as engines and power plants.
The standard change in entropy when one mole of sodium nitrate is dissolved in water is:
ΔS° = S° (products) - S° (reactants)
ΔS° = (60.25 + 146.4) - 116.3 = 90.3 J/K•mol
The solubility of sodium nitrate will increase if the temperature of the system is increased.
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Find Delta S for the formation of 1 mole of PCl5(g) from its elements.
____ J/K
Answer:
I don't know I am sorry