Sulfur dioxide emissions from coal-burning power plants are removed by flue-gas desulfurization. The flue gas passes through a scrubber, and a slurry of wet calcium carbonate reacts with it to form carbon dioxide and calcium sulfite. The calcium sulfite then reacts with oxygen to form calcium sulfate, which is sold as gypsum.
(b) If the mole fraction of oxygen in air is 0.209, what volume (L) of air at 1.00 atm and 25°C is needed to react with all the calcium sulfite?
Answers
So they tell us that we have four giggle years of flue gas and they're wanting us to find out how much calcium Sophia in kilograms we can obtain from this. So we know that one Giga Leader is equal to one time 10 to the nine leaders.
and they inform us that our stress is equal to one surroundings and that our temperature is equal to 25 degrees Celsius. i am just gonna add to seventy three Calvin to this. So our temperature goes to be 98. Calvin. All proper, so we are simply gonna plug the whole thing into our equation. So one atmosphere times our quantity so four times, 10 to the nine leaders. we're gonna divide this through ours. i'm just gonna use artwork zero.8 to 1 leader's atmosphere per mole, Kelvin.
and then we are gonna times that by way of our temperature. so to 98 Calvin. All right, so when we calculate this out, are moles of flue gasoline is gonna identical to one.6 35 instances generally tend to the 8 moles of our flue gasoline. So now that we've got our moles of flue gas, we need to find a connection between the most of flue fuel and the mass of our calcium selfie.
So if we pass up here, we see that one more of our silver dioxide is equal to at least one mole of our calcium sulfate. So we're gonna use that connection to help us discover the big calcium selfie. So we want to locate the moles of our sulfur dioxide and they provide us the mole fraction for silver dioxide. they say it's a thousand times that of clean air, and we recognize that the mole fraction for easy air is two instances 10 to the negative 10.
So our mole fraction to be able to is equal to two instances 10 to the poor, 10 times a thousand. So our new mole fraction for S 02 goes to be instances 10 to the terrible seven. Hurry. And we realize our moles of sulfur dioxide are identical to its mole fraction times the full wide variety of moles. So we do recognise the full variety of moles.
it's what number of moles of our flue gas we have. So our moles of eso to is gonna be too instances 10 to the negative seven instances 1.635 times tend to the 8 moles. So our moles of sulfur dioxide goes to be 32.7 moulds. So now that we've maximum of the sulfur dioxide, we are able to get the moles of our calcium, Sophie, and that's just gonna be the moles of our sulfur dioxide. And we're gonna times that by means of that one toe, one-mole ratio. So one mole, calcium Sophie to at least one-mole sulfur dioxide.
So the moles of our calcium sulphate is the same at 32.7 maximum. So now, to get the mass of our calcium selfie, we simply take our range of maximum of 32.7 moles. I worked inside the times that via its molar mass, that's 136.14 grams in keeping with mole.
So our mass of calcium sulfate is equal to four hundred or 4451.eight g. They need this in kilograms. Sword goes to divide this by way of hundreds. So when we do this, it is gonna equal 4 factors for 518 kilograms of our calcium. So toes and that is Thea amount or the mass of calcium sulphate we will get from four Giga leaders of flue gasoline.
All right, so for the second a part of this question, they're asking us the quantity of air needed to react with all the calcium sulphides. as a way to figure that out, we're gonna need to parent out the moles of 02 They do give us the mole fraction for 02 and it is identical to 0.2 09 after which we're searching out the quantity of air in leaders. All proper, so we recognize that moles of 02 are identical to its small fraction times the full moles of air So maximum of 02 is gonna be 0 factor 209 times all through moles of air.
So allow's simply use that variety for our Mueller ratio to discern out our moles of calcium sulphate. So we are gonna use 32.7 of our calcium, so fight as it's simply gonna be a 1 to one ratio. Oh, we recognize that for each 1.five moles of 02 we've one mole, our calcium sulfate. and then we also know that for each one mole of air, we've got zero.209 moles of 02 So we calculate this out. Are moles of air goes to same 78.2 moles of air?
So then, to get the volume we are simply gonna use PV is same to N. R. T. So we're solving for quantity. So n r t divided through the pressure. They tell us that the pressure is same to 1 environment and we are gonna be using a temperature equal to 2 98 Calvin.
So our extent is gonna identical 78.2 moles of air while times that through our cost of zero.8 to one leaders surroundings in keeping with greater Calvin or in times that fireplace temperature, which is to ninety eight Calvin, I might not divide all of this through one surroundings. So our extent of air is gonna identical to 1913 leaders of air this is had to react absolutely with calcium sulfate. and that's how we noticed the second part of this problem.
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Related Questions
You would like to produce a gray iron casting that freezes with no primary austenite or graphite. If the carbon content in the iron is 3.5%, what percentage of silicon must you add?
Answers
The percentage of silicon to be added to produce a gray iron casting with no primary austenite or graphite, given a carbon content of 3.5%, is 1.25%.
The addition of silicon to iron has a strong influence on the formation of graphite in cast iron. Increasing the silicon content in gray iron results in the formation of flake graphite instead of nodular graphite, which makes it a desirable element to be added in the production of gray iron castings.
The addition of 1.25% silicon to the iron with 3.5% carbon content is the typical amount needed to promote the formation of gray iron with no primary austenite or graphite.
This addition will ensure that the iron solidifies with the formation of graphite and no austenite, resulting in a gray iron casting.
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. The salt that is formed during the reaction between
potassium hydroxide and hydrochloric acid is
a. NaCl.
c. KCI.
b. H.O.
d. K.C.
Answers
Answer:
i think
KCI
is the answer
The presence or absence of a solute in the filtrate depends on _______.
the pore size of the membrane
The molecular weight and size of the solute as well as the MWCO and pore size of the membrane.
the MWCO of the membrane
the size of the solute
the molecular weight of the solute
Answers
The presence or absence of a solute in the filtrate depends on The molecular weight and size of the solute as well as the MWCO and pore size of the membrane.
The presence and the absent of the solute in the filtrate will depends on the molecular weight and the size of the solute as well as the MWCO that molecular weight cut off and pore size of the membrane. The molecular weight cut - off is the lowest molecular weight of the solute from which the 90% of the it is retained by membrane . The MWCO is important in the filtration.
The MWCO describes the pore size. it will describe the rejection capability of the membrane.
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What is the charge that oxygen gets when it becomes an ion?
Answers
Answer:
Explanation: Every electron has a single negative(-) charge, the addition of two electrons results in an oxygen ion with a charge of negative(−)2. This is in fact true of every element located under oxygen in the periodic table.
P.S. hope this helps :)
A solar eclipse is then the moon comes in between the sun and the Earth.
True
False
Answers
I’m guessing true
Because:
A solar eclipse occurs when the Moon moves in front of the Sun, blocking some of the Sun's light on Earth either completely or partially. Because the Moon doesn't orbit on a precise plane with the Sun and Earth, this only occurs on rare occasions
Determine the number of moles of 725.0 g of BaSO4
Answers
Answer:
It would be 3.1063937724731447 moles.
Hope this helps :)
Find the percent by mass of carbon in hexanal C5H11CHO: ________% by mass in C5H11CHO
Answers
The percent by mass of carbon in hexanal (C5H11CHO) is approximately 71.97%.
How to find the percent by mass of a compound?To find the percent by mass of carbon in hexanal (C5H11CHO).
Step 1: Calculate the molar mass of hexanal (C5H11CHO).
The molecular formula for hexanal is C6H12O1. The molar mass of each element is as follows:
- Carbon (C): 12.01 g/mol
- Hydrogen (H): 1.01 g/mol
- Oxygen (O): 16.00 g/mol
Step 2: Determine the total molar mass of hexanal.
Total molar mass = (6 * 12.01) + (12 * 1.01) + (1 * 16.00) = 72.06 + 12.12 + 16.00 = 100.18 g/mol
Step 3: Calculate the mass of carbon in hexanal.
The mass of carbon in hexanal = (6 * 12.01) = 72.06 g
Step 4: Find the percent by mass of carbon in hexanal.
Percent by mass = (mass of carbon / total molar mass) * 100
Percent by mass = (72.06 / 100.18) * 100 = 71.97 %
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56ude67fv67gbubvtyfg help PLS
Answers
Answer:
p=5.0g/cm³
Explanation:
density formula
p=m/v
And if im not mistaken the stone weighs 200grams
The Volume of the tube increases by 40
So
p=200/40
p=5.0g/cm³
what are the two ways in which the physical state of matter can be changed
Answers
The two ways in which the physical state of matter can be changed are melting and freezing.
Melting is the process by which a solid substance transitions to a liquid state. As a result, the energy added to the solid substance causes the molecules to vibrate at a higher rate. As a result, the heat breaks the bonds between the molecules, allowing them to flow freely.Freezing is the process by which a liquid substance transitions to a solid state. As a result, energy is removed from the liquid substance. The molecules in the substance are moving quickly, but when energy is removed, they slow down.Because of the decrease in energy, the molecules can no longer slide past one another and form a rigid structure, resulting in a solid state of matter.For such more questions on physical state
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if you were given an unknown sample, how would you determine if it was a suspension, colloid or homogeneous solution?
Answers
The Tyndall effect can be used to detect whether an unknown sample is a suspension, colloid, or homogeneous solution.
Light can always travel through a solution, and there is never any general light scattering. Between solutions and suspensions, a colloid exists. By diffusing the incoming light, it produces the Tyndall effect. A suspension is hazy and contains visible suspended particles. The suspensions obstruct the passage of light.
A combination that is heterogeneous and has some of its particles settle out as it stands is called a suspension. Therefore, if a beam of light is passed through your sample and it scatters, it is either a suspension or a colloid. It is a solution if it doesn't scatter.
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how do endotherms and ectotherms derive most of their body heat? multiple choice ectotherms derive most of their body heat through their environment, while endotherms derive most of their body heat through metabolic processes. both ectotherms and endotherms derive most of their body heat through their environment. ectotherms derive most of their body heat through their fur, while endotherms derive most of their body heat through insulating scales. ectotherms derive most of their body heat through metabolic processes, while endotherms derive most of their body heat through their environment both ectotherms and endotherms derive most of their body heat through metabolic processes.
Answers
Ectotherms derive most of their body heat through the environment,
while endotherms derive most of their body heat through metabolic
processes.
What are Metabolic processes?
Metabolic processes are the chemical and energy-requiring processes that occur within a living organism and are necessary for the maintenance of life. These processes include the breakdown of food molecules to obtain energy, the synthesis of new molecules and the transport of molecules around the body. Examples of metabolic processes include respiration, digestion, fermentation, and cellular respiration.
Explain the terms Endotherms and Ectotherms?
Endotherms are organisms that generate their own body heat, such as mammals and birds. They can regulate their internal temperatures and are not reliant on external sources of heat for their body temperature.
Ectotherms are organisms that rely on external sources of heat to regulate their body temperature, such as reptiles and amphibians. They are unable to generate their own body heat and instead rely on external sources such as the sun, warm rocks or warm water.
Therefore, the correct option would be Option A.
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Hello! can someone explain to me how to solve this?How many moles of tungsten atoms are in 4.8 * 10^25 atoms of tungsten?
Answers
How many moles of tungsten atoms are in 4.8 * 10^25 atoms of tungsten?
Avogadro's number is the number of particles that we have in one mol of particles. It is 6.022 *10^23. For example: in 1 mol of atoms there are 6.022*10^23 atoms.
It's like a dozen. When we say a dozen atoms, we mean 12 atoms. So, when we say a mol of tungsten atoms, we mean 6.022 *10^23 atoms of tungsten.
1 mol of atoms of tungsten = 6.022 *10^23 atoms of tungsten
We will use that relationship to find the number of moles of tungsten atoms that we have in 4.8 *10^25 atoms of tungsten.
number of moles of tungsten atoms = 4.8 *10^25 atoms * 1 mol of atoms/(6.022 *10^23 atoms)
number of moles of tungsten atoms = 79.7 moles = 8 *10^1 moles
number of moles of tunsten atoms = 8.10^1 moles
Answer: b) 8*10¹ moles
A student is conducting a laboratory experiment with sulfur hexafluoride (SF6) with a molar mass of 146.07 g/mol. However; the student did not complete the required pre-laboratory notes_ Compound SFs Mass Moles Particles 235.7 g
Which selection complete the chart correctly?
a. 1.6 moles, 9.72 x1023 particles
b. 0.62 moles; 9.72 x1023 particles
c. 1.6 moles, 2.65 x1022 particles
d. 0.62 moles, 2.65 x1022 particles'
Answers
Any chemical containing 1 mole contains 6.022x1023 molecules. Similar to how 1 molecule of SF6 contains 0.00425 moles of sulphur hexafluoride.
An inorganic substance having the chemical formula SF6 is sulphur hexafluoride. It is a gas that is harmless, colourless, odourless, and non-combustible. Six fluorine atoms are bonded to the central sulphur atom of the molecule SF 6, which has an octahedral structure. This chemical has a high valentine. In the energy sector, SF6, a synthetic, odourless gas, is used to preserve the security and dependability of networks. It won't interact with other substances in a way that would change its behaviour or lessen its effectiveness due to its high degree of stability, lack of toxicity, lack of flammability, and electronegative character. Molecular weight / molecular mass equals the number of moles. Given that SF6 has a molecular weight of 4g, the calculation is SF6 = 4/146 = 0.027.
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When a substance an electron it energy which is an reaction. a)Absorbs; creates; chemical b)Gains: gains; oxidation c)Looses; looses; oxidation d)Looses; looses; reduction
Answers
When a substance gains an electron, it undergoes a reduction reaction. In a reduction reaction, a substance gains electrons, which results in a decrease in its oxidation state or an increase in its negative charge.
This process is often associated with the transfer of energy to the substance, as the gained electron brings additional negative charge and potential energy.
Reduction reactions are essential in various chemical and biological processes. For example, in cellular respiration, glucose is oxidized (loses electrons) while oxygen is reduced (gains electrons), leading to the release of energy for cellular activities. Similarly, reduction reactions play a crucial role in many other chemical reactions, such as the reduction of metal ions, the formation of covalent bonds, and the production of certain fuels.
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Which set of laboratory equipment would most likely be used with a crucible
Answers
Answer:
That should be crucible tong
Write 1-2 paragraphs explain the following concept: convection currents in fluids, wind,global winds , local winds, sea breeze, land breeze, jet streams, trade winds,
Answers
Convection is air moevemt
the first law of thermodynamics is a restatement of the conservation of
Answers
the first law of thermodynamics is a restatement of the conservation of energy
Washing machines, refrigerators, and air conditioners are a few examples of thermodynamic systems. The refrigerant in an air conditioner circulates inside a closed system, changing its pressure at various places to facilitate the transmission of heat. Energy cannot be generated or destroyed but can only be transformed from one form to another, according to the first law of thermodynamics, commonly known as the law of conservation of energy.The amount of thermal energy per unit of temperature in a system that cannot be used to carry out beneficial work is known as entropy. Since work is produced by ordered molecular motion, entropy also serves as a proxy for a system's molecular disorder or unpredictability.
the first law of thermodynamics is a restatement of the conservation of?
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Which of the following elements is not a diatomic molecule?
O carbon
O nitrogen
O chlorine
O hydrogen
Answers
Diatomic elements are pure elements that form molecules consisting of two atoms bonded together.
Diatomic elements: hydrogen, nitrogen, oxygen, fluorine, chlorine, iodine, bromine.
So “Carbon” is not a diatomic molecule!!
Hope this helps you!!:))
the molecule below contains both an aldehyde and a ketone functional group. select only the carbonyl carbon atom of the aldehyde functional group. highlight the appropriate atom by clicking on it.
Answers
The molecule below contains both an aldehyde and a ketone functional group the carbonyl carbon atom of the aldehyde functional group is Carbonyl compounds are the ones compounds wherein carbon atom is doubly bonded to oxygen atom.
The hybridization of carbon and oxygen in carbonyl compounds is Sp². Folowing are examples of carbonyl compounds,
1. Ketones
2. Aldehydes
3. Carboxylic
4. Acyl Halides
5. Amides
Acids
6. Esters
7. Anhydride
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How many total electrons must be transferred to form one formula unit of Al2O3?
Answers
To form one formula unit of Al2O3, a total of 12 electrons (6 from aluminum and 6 from oxygen) must be transferred.
The compound Al2O3, commonly known as aluminum oxide, is formed when two aluminum atoms and three oxygen atoms bond. To determine the number of total electrons that must be transferred to form one formula unit of Al2O3, we first need to find the number of electrons that are present in one formula unit of Al2O3.
Aluminum has an atomic number of 13, which means it has 13 protons and 13 electrons in a neutral atom. Each aluminum atom in Al2O3 contributes 3 electrons, and since there are two aluminum atoms in one formula unit of Al2O3, the total number of electrons contributed by aluminum atoms is 6.
Oxygen has an atomic number of 8, which means it has 8 protons and 8 electrons in a neutral atom. Each oxygen atom in Al2O3 contributes 2 electrons, and since there are three oxygen atoms in one formula unit of Al2O3, the total number of electrons contributed by oxygen atoms is 6.
Therefore, to form one formula unit of Al2O3, a total of 12 electrons (6 from aluminum and 6 from oxygen) must be transferred.
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10. How many moles of CuCl, are in 150 L of a 2.33 M Cuci, solution?
Answers
Answer:
349.5 moles
Explanation:
(I am assuming that there is a typo at the end, where Cuci solution = CuCl solution)
The formula for molarity is:
Molarity = moles in solution / volume of solution
Here, we are given both the Molarity and the volume. So we can plug it into the equation above and get:
2.33 = moles / 150
Now we solve for the moles by doing:
moles = 2.33 * 150
This gives us the answer of 349.5 moles.
Acid rain forms from sulfur combining with water in the atmosphere to form
sulfuric acid. What are the reactants of this reaction?
A. Sulfuric acid and water
B. Sulfuric acid and sulfur
C. Water and sulfur
D. Water, sulfur, and sulfuric acid
Answers
Answer:
sulfur and water
Explanation:
sulfur + water --> sulfuric acid
^ reactants. ^ product
On Greg's last visit to his doctor, he complained of feeling tired. Sandra, the registered nurse, withdrew 6.5 mL of blood, which was sent to the lab and tested for iron. The normal range for serum iron in men is 80 to 160 mcg/dL. Greg's iron test showed a blood serum iron level of 39 mcg/dL, How many micrograms of iron were in the 6.5-mL sample of Greg's blood?
Answers
Answer:
2.5 mcg of iron
Explanation:
Density is given as;
D= m/v
Where;
m= mass
v= volume
mass= ?
volume= 6.5 ml or 0.065 dl
d= 39 mcg/dL
m= density × volume
m= 39 mcg/dL × 0.065 dl
m= 2.5 mcg of iron
Everyone i have added mean something special to me
Answers
Answer:
on what
Explanation:
the mass number of an atom is 15, and its atomic number is 7. the atom probably has... the mass number of an atom is 15, and its atomic number is 7. the atom probably has... at least 15 electrons. 7 electrons in the nucleus. 7 units of negative charge in the nucleus. 8 neutrons in the nucleus. about as much mass in electrons as in protons.
Answers
The atom probably has 8 neutrons in the nucleus.
Atomic number (Z) is total number of protons and mass number (A) is total number of protons and neutrons in a nucleus.
N(p⁺) = Z = 7; number of protons in the atom
A = N(p⁺) + N(n°)
N(n°) = A - N(p⁺)
N(n°) = 15 - 7
N(n°) = 8; number of neutrons in the atom
N(e-) = N(p⁺) = 7; number of electrons in the atom
Neutron (symbol: n°) is a subatomic particle with no net electric charge.
Protons and neutrons are found in nucleus of an atom (atomic nuclei).
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The general shape that an electron is located within an energy level_____
Answers
Answer:
Concentric circles
Explanation:
The energy levels are shown as concentric circles around the central nucleus, and the electrons are placed from the inside out. The first two electrons are found in the first energy level, and the third electron is found in the second energy level.
Calculate the value of ΔG∘rxnΔGrxn∘ for hypochlorous acid at 296 K. Ka = 2.9 × 10–8 and assume Ka does not change significantly with temperature. $$HClO(aq)+H2O(l) HClO−(aq)+H3O+(aq)
Answers
The standard Gibbs free energy change (ΔG∘rxn) for the reaction involving hypochlorous acid (HClO) at 296K is determined using ΔG∘rxn =-RTln(K), where R is the gas constant, T is the temperature in K.
To calculate ΔG∘rxn, we use the equation ΔG∘rxn = -RTln(K), where R is the gas constant (8.314 J/(mol·K)) and T is the temperature in Kelvin. In this case, the equilibrium constant (K) is determined by the acid dissociation constant (Ka) for HClO. The equilibrium constant expression for the reaction is K = [HClO−][H3O+]/[HClO].
Given that Ka = 2.9 × 10^–8, we substitute this value into the K expression. Next, we calculate ΔG∘rxn using the given temperature of 296 K. By plugging in the values into the equation ΔG∘rxn = -(8.314 J/(mol·K))(296 K)ln(2.9 × 10^–8) and evaluating the expression, we can determine the value of ΔG∘rxn for the reaction involving HClO at 296 K.
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Which of the following best describes what would happenif mitosis did not take place?
A.Cells would get smaller and smaller over time.
B.Body tissues would not be able to repair themselves
c.The production of gametes (reproductive cells) wouldnot occur.
D.Organisms would all be multicellular.
Answers
Answer: B
Explanation:
A solution is prepared by dissolving 0. 23 mol of nitrous acid and 0. 27 mol of sodium nitrite in water sufficient to yield 1. 00 L of solution. The addition of 0. 05 mol of HCl to this buffer solution causes the pH to drop slightly. The pH does not decrease drastically because the HCl reacts with the __________ present in the buffer solution. The Ka of nitrous acid is 1. 36 × 10-3. A) H2OB) H3O+C) nitrite ionD) nitrous acidE) This is a buffer solution: the pH does not change upon addition of acid or base
Answers
The pH does not decrease drastically because the HCl reacts with the nitrite ion present in the buffer solution is: C) nitrite ion.
What is nitrous acid (HNO2) used for?In this case, nitrous acid (HNO2) and sodium nitrite (NaNO2) are used to prepare the buffer solution. The nitrous acid is a weak acid, and the nitrite ion (NO2-) is its conjugate base. The presence of both the weak acid and its conjugate base makes this solution a buffer solution.
When a small amount of HCl is added to the buffer solution, it reacts with the nitrite ion present in the solution according to the following equation:
HCl + NO2- -> HNO2 + Cl-
The HCl donates a proton to the nitrite ion, forming nitrous acid and chloride ion. This reaction consumes some of the added HCl, which prevents the pH from decreasing drastically.
Therefore, the correct answer is option C) nitrite ion.
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in experiment 1, what volume did the propane gas occupy in the erlenmeyer flask before the addition of any water? 314.0 ml 20.0 ml 0.0 ml 250.0 ml
Answers
The volume of propane gas occupied in the Erlenmeyer flask before the addition of any water was 314.0 ml.
A laboratory flask with a flat bottom, a conical body, and a cylindrical neck is known as an Erlenmeyer flask, sometimes known as a conical flask or a titration flask. It was developed in 1860 by German scientist Emil Erlenmeyer (1825–1909), for whom it is called.
Erlenmeyer flasks feature broad bases and narrow, vertical necks at their uppermost points.
They might be graduated, and places, where they can be marked with a pencil, are frequently covered in patches of ground glass or enamel. Its short neck and tapering body set it apart from the beaker. They come in a variety of volumes and can be made out of glass or plastic, depending on the application.
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