Part B)Determine the number of moles of oleic acid in the monolayer. Assume the nubmer of grams of oleic acid in the monolayer is 7.13×10−6 g Part C)Calculate the surface area of one molecue if we assume the molecule is shaped like a cylinder that the hight is 10x larger than the radiusPart D)Determine the area of the surface covered by the molecues assuming they have a circular surface which at most can cover 90.6%. Part E)Calculate the number of molecules in the surface. Part F)Calculate the number of molecues in 1 mole of calculated oleic acid.
Answers
No. of moles of oleic acid = 2.52 x 10-8 mol .Given mass of oleic acid in the monolayer = 7.13 x 10-6 g
Part B)Oleic acid's mass must first be converted to moles in order to find the amount of the acid present in the monolayer. The molar mass of oleic acid is 282.47 g/mol: n=m/n =7.13 106g/282.47 g/mol=2.52 108molAs a result, the monolayer contains 2.52 x 10-8 moles of oleic acid.Component C)A=2r 2+2rh If we assume that the radius is roughly 1.0 nm and equals the length of the oleic acid's carbon chain (18 carbons), then the height is roughly 10.0 nm. In light of this, A=2(1 nm) 2+2(1 nm)(10 nm)=62.8 nm 2 Hence, one oleic acid molecule has about 62 surface square metres of surface area.A covered (Part D) =0.90662.8 nm 2 =56.9 nm 2. Total = 2 for Part E. (5.0 cm) 2 =78.5 cm 2 =7.85×10 9 nm 2.Taking the entire surface area and dividing it by the area occupied by one molecule results in: N = A total / A covered = 7.85 10 9 nm 2 /56.9 nm 2 =1.38×10 11 The surface therefore contains about 1.38 x 1011 oleic acid molecules.Part F)N Avogadro = 6.022 x 1023 molecules/mol As a result, there are the following molecules in 1 mole of oleic acid:
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Related Questions
help PLZ will give brainliest
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Answer:
6.Crust
7. outer core
8.mantle
A solution containing a buffer has an initial ph of 8.78. If a student adds 5 drops of hcl(aq) to this solution. What would be a reasonable ph for the resulting solution?
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Buffer is a solution that has been known to have an acid and base dissolved with constant hydrogen concentration. If 5 drops of HCl are added to the buffer then the final pH will be 8.64. Thus, option a is correct.
What is pH?pH has been the concentration that is made of hydrogen or proton ions. The ions have been known to be released from the acids while the bases release the hydroxide ions.
The given buffer has a pH of 8.78, and hence, it is a basic buffer. If the solution of HCl (strong acid) is added to this buffer then the pH will decrease definitely. As only 5 drops are added there will be not much decrease in the pH.
Therefore, option a. the pH of the buffer after addition to HCl will be 8.64.
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Your question is incomplete, but most probably your full question was, A solution containing a buffer has an initial pH of 8.78. If a student adds 5 drops of HCl(aq) to this solution. What would be a reasonable pH for the resulting solution?
8.648.787.008.895.22in-lab question 11. the mg2 /mg couple was not tested when measuring half-cell potentials. based on its behavior in part a, where would you place it in the order you developed above?
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The magnesium/magnesium ion couple will be positioned in between the copper/copper ion and the silver/silver ion.
The Mg²⁺/Mg couple should be located in between the Cu²⁺/Cu and Ag+/Ag couples based on the order that was developed above. The half-cell reaction of Mg²⁺goes as:
Mg(s) + 2H⁺(aq) → Mg²⁺(aq) + H₂(g)
The magnesium metal can undergo oxidation in order to convert to magnesium ion and a couple of electrons. This half-cell reaction demonstrates that Mg2+ can be decreased to Mg(s), indicating that it may act as a reduction agent. Because the silver/silver ion has a more positive electrode potential than the magnesium/magnesium ion, it is put over it in the series.
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Suppose that a formic acid (hcooh) solution has a ph of 3. 15. which of these substances would increase the ph of the solution?
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To increase the pH of a formic acid (HCOOH) solution with a pH of 3.15, a substance needs to be added that can accept hydrogen ions (H+) and increase the concentration of hydroxide ions (OH-) in the solution.
One such substance that can increase the pH is a strong base. Strong bases dissociate completely in water, releasing hydroxide ions and increasing the pH of the solution. Examples of strong bases include sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2).
Formic acid (HCOOH) is a weak acid that partially dissociates in water, releasing hydrogen ions (H+). The presence of these hydrogen ions gives the solution an acidic pH. To increase the pH, a substance that can accept hydrogen ions and increase the concentration of hydroxide ions needs to be added.
Strong bases, such as sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2), are highly alkaline substances that dissociate completely in water, releasing hydroxide ions (OH-). The hydroxide ions react with the hydrogen ions in the solution, forming water molecules and increasing the pH. By adding a strong base to the formic acid solution, the concentration of hydroxide ions increases, thereby shifting the pH towards the alkaline side and increasing the pH value.
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The pictures above show a gerbera daisy that has experienced a change called wilting. Which of the statements below best describes what has happened from Picture A to Picture B?
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Answer:
a
i just had this
Answer:
A. water entering the plant. thats the one
Explanation:
Can someone help me with this??
Answers
Answer:
Explanation:
There are many observations, but the three that stand out for me are:
Leafs/plants are the original photocell. Phtocell generally refers to the conversion of sunlight energy into electrical energy. photosynthesis converts sunlight into chemical energy that uis stored in molecules such as carbohydrates.Plants make the oxygen that most life needs to survive. Photosynthesis removes carbon dioxide from the air. As a grennhouse gas, CO2 needs to be in balance with the rest of the planet. More plants are needed to removed CO2 released by buring of fossil fuels. Water is a feedstock in photosynthesis, so drought is a major threat.Is poverty a cycle? And how?
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A discrete cellular structure composed of a neatly packaged dna molecule _________
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A discrete cellular structure composed of a neatly packaged DNA molecule is called a "chromosome."
Chromosomes are structures found within the nucleus of cells and are responsible for carrying the genetic information in the form of DNA. Each chromosome consists of a single, long DNA molecule tightly coiled and organized with proteins.
This packaging allows for the efficient storage, replication, and transmission of genetic material during cell division. Chromosomes are visible under a microscope during specific stages of cell division when they condense and become visible as distinct structures. In humans, each somatic cell typically contains 46 chromosomes, arranged in 23 pairs.
These chromosomes contain the genes that determine an individual's inherited traits and characteristics. Alterations or abnormalities in the structure or number of chromosomes can lead to genetic disorders and diseases. The study of chromosomes is essential in genetics and plays a crucial role in understanding heredity, genetic disorders, and evolutionary relationships between species.
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Harry stores toxic chemical waste in a large steel tank that has only 15% of its volume underground. Jena lives in the wilderness and has her own gas pump connected to a 1,500-gallon tank of gasoline buried ten feet underground near her garage. Lars keeps three large tanks filled with formaldehyde and battery acid in his basement. Which of these people are covered by federal regulations regarding USTs?
Answers
Answer:
Only Harry and Jena
Explanation:
Under federal regulations, an UST is any one or a combination of tanks such that the volume of an accumulation of regulated substances is 10% or more beneath the surface of the ground.
Any UST system holding a mixture of hazardous waste and other regulated substances are also are not covered by federal regulations regarding USTs.
Farm or residential tank of capacity more than 11 gallons used for storing motor fuel is covered by federal regulations regarding USTs.
According to the given question,
Only Harry and Jena are covered by federal regulations regarding USTs.
he long run equilibrium condition for perfect competition is:
a. P=AVC=MR=MC.
b. Q=AVC=MR=MC.
c. Q=ATC=MR=MC.
d. P=ATC=MR=MC.
Answers
Option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.
The long-run equilibrium condition for perfect competition is that price (P) is equal to average total cost (ATC), which is also equal to marginal cost (MC), and marginal revenue (MR).
Option (d), P=ATC=MR=MC, best represents the long-run equilibrium condition for perfect competition. In perfect competition, firms operate at the minimum point of their average total cost curve, where price equals both average total cost and marginal cost. This condition ensures that firms are earning zero economic profit and are producing at an efficient level.
In the long run, if firms are earning economic profit, new firms will enter the market, increasing competition and driving prices down. Conversely, if firms are experiencing losses, some firms may exit the market, reducing competition and causing prices to rise. This process continues until firms reach a state where price equals average total cost, marginal cost, and marginal revenue, ensuring a long-run equilibrium.
Therefore, option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.
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isotopes with an even number of both protons and neutrons are generally stable. true or false
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The statement "Isotopes with an even number of both protons and neutrons are generally stable" is TRUE.
Isotopes with an even number of protons and neutrons are known as isotopes. A single element can have a different number of neutrons; such elements are known as isotopes. A nucleus containing a different number of neutrons will have a different mass number than the element's standard atomic number since the mass number is equal to the number of neutrons plus the number of protons in the nucleus.
There are 275 isotopes recognized for 81 stable elements, while there are 50 isotopes for elements that are radioactive and occur naturally.
Isotopes with an even number of both protons and neutrons tend to be more stable, as the strong nuclear force and the electromagnetic force in a nucleus cancel out, causing a more stable nucleus. The vast majority of stable elements have a nearly equal number of neutrons and protons, though there are some exceptions, such as beryllium-8 and helium-3.
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2. C) Br2 and Cl2 can react to form the compound BrCl. The boiling point of Br2 is 332 K, whereas the boiling point of BrCl is 278 K. Explain this difference in boiling point in terms of all the intermolecular forces present between molecules of each substance.
Answers
It can be explained by the presence of stronger intermolecular forces in BrCl, such as dipole-dipole interactions, compared to the weaker dispersion forces in \(Br_{2}\) .
The difference in boiling points between \(Br_{2}\) and BrCl can be explained by the intermolecular forces present between their molecules. \(Br_{2}\) consists of nonpolar molecules held together by weak London dispersion forces, which are the result of temporary fluctuations in electron density.
In contrast, BrCl molecules have a polar covalent bond, creating permanent dipole-dipole interactions in addition to London dispersion forces. The presence of stronger dipole-dipole interactions in BrCl leads to increased intermolecular forces, requiring more energy to overcome and hence resulting in a lower boiling point compared to \(Br_{2}\).
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For the reaction H2 + O2→ H2O, how many grams of water are produced from 6.00 mol of hydrogen?
Answers
Answer:
108 g
Explanation:
2H₂ + O₂ ⇒ 2H₂O
1) n(H₂) : n(H₂O) = 2 : 2
Hence, n(H₂O) = n(H₂) = 6,00 mol
2) m(H₂O) = n × M = 6,00 mol × (2 + 16) g/mol = 6,00 × 18 mol = 108 g
PLEASE ANSWER QUICK 55 POINTS RIGHT ANSWERS ONLY :)
Answers
Explanation:
To solve the problem, we can use the freezing point depression equation:
ΔT = Kf · molality
where ΔT is the change in freezing point, Kf is the freezing point depression constant, and molality is the concentration of the solution in moles of solute per kilogram of solvent.
In this case, we're looking for the freezing point of a solution of C5H4 in benzene, given that the freezing point of pure benzene is 5.50 °C, and the freezing point depression constant is 5.12 °C/m.
First, let's calculate the molality of the solution:
molality = moles of solute / kilograms of solvent
To find the moles of solute, we need to know the molar mass of C5H4. By looking it up in a periodic table, we find:
Molar mass of C5H4 = 64.09 g/mol
The problem doesn't tell us how much solute was added, but it does give us the concentration of the solution as 0.41 m (which means 0.41 moles of C5H4 per kilogram of benzene). Therefore:
molality = 0.41 moles / 0.998 kg ≈ 0.411 mol/kg
Now we can calculate the freezing point depression:
ΔT = Kf · molality
ΔT = 5.12 °C/m · 0.411 mol/kg ≈ 2.10 °C
The freezing point depression tells us how much the freezing point of the solution is lowered compared to the freezing point of pure benzene. Therefore, the freezing point of the solution is:
Freezing point = 5.50 °C - 2.10 °C = 3.40 °C
Therefore, the freezing point of the 0.41 m solution of C5H4 in benzene is 3.40 °C.
When a ball is rolling down a hill, what forces are acting on the ball? Why does it speed up?
Include friction and gravity in your answer.
Answers
Answer:gravity
Explanation:
Answer:
the gravity speed up because the friction didn't speed up
When 1-bromopropane is exposed to magnesium, followed by ethanal (a 2-carbon aldehyde) and then aqueous acid, what is the resulting product
Answers
The resulting product obtained when 1-bromopropane is exposed to magnesium, followed by ethanal (a 2-carbon aldehyde), and then aqueous acid is propan-1-ol. Below is an explanation of the reaction steps and mechanism that leads to the formation of propan-1-ol:
Step 1: Magnesium Reduction Magnesium reduces 1-bromopropane to a magnesium-alkoxide complex, forming magnesium bromide (MgBr2) as a by- product: Mg + C3H7Br → MgBr-C3H7 + Br-MgBr2
Step 2: Aldehyde Addition The magnesium-alkoxide complex reacts with ethanal (a 2-carbon aldehyde) in an addition reaction to form a compound with a hydroxyl (-OH) group on the carbon adjacent to the carbonyl group (i.e. a beta-hydroxy aldehyde).
This reaction is called Grignard reaction, which is known as an addition reaction that forms carbon-carbon bonds.C3H7OMgBr + CH3CHO → C3H7O-CH(OH)CH3 + Mg B r O H .
Step 3: Acid Hydrolysis The reaction mixture is then treated with aqueous acid (e.g. HCl) to hydrolyze the magnesium alkoxide into propan-1-ol: C3H7O-CH(OH)CH3 + H+ → C3H7OH + CH3CHOHThe overall reaction is: Mg + C3H7Br + CH3CHO + H+ → C3H7OH + CH3CHOH + MgBr2 . In conclusion, the Grignard reaction is an essential reaction in organic chemistry for the formation of carbon-carbon bonds.
The reaction mechanism involves the formation of a Grignard reagent (e.g. magnesium alkoxide) followed by an addition reaction with an electrophilic carbonyl compound (e.g. an aldehyde or ketone).
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According to Newton's Second Law of Motion, why would you not want to drive a regular car during a race on a racetrack?
Answers
Answer:
According to Newton's first law of motion, it is the natural tendency of all moving objects to continue in motion in the same direction that they are moving ... unless some form of unbalanced force acts upon the object to deviate its motion from its straight-line path. Moving objects will tend to naturally travel in straight lines; an unbalanced force is only required to cause it to turn. Thus, the presence of an unbalanced force is required for objects to move in circles.
Explanation:
Select the correct answer. Light ray A moves from air to water. Part of ray A is reflected at the air-water boundary. Which arrow in the image is the reflected ray? A picture shows a light ray A moving from air to water. Ray B moves from water to air. The rays C and D move down inside the water and the ray E moves along the surface of the water. A. B B. C C. D D. E
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Answer:
The correct answer is A. B. The arrow in the image that represents the reflected ray is the one labeled "B," which shows the direction of the ray after it has bounced off the air-water boundary.
What would be the value for the ideal gas constant (R) if pressure (P) is in kilopascals, temperature (T)
is in kelvins, volume (V) is in liters, and amount of gas (n) is in moles?
Answers
Answer:
R = 8.314 pKa*L/mol*K
The value for the ideal gas constant (R) is approximately 8.314 kPa·L/(mol·K).
To determine the value for the ideal gas constant (R) when pressure (P) is in kilopascals (kPa), temperature (T) is in kelvins (K), volume (V) is in liters (L), and amount of gas (n) is in moles, we need to use the appropriate units for R based on these measurements.
The ideal gas constant, R, can be expressed in various units. The most common units for R are:
R = 0.0821 L·atm/(mol·K) (atmospheres, liters, moles, and kelvins)
However, since you provided the measurements in kilopascals, liters, moles, and kelvins, we need to use a different value for R that is consistent with these units:
R = 8.314 kPa·L/(mol·K)
Therefore, when pressure is in kilopascals, volume is in liters, amount of gas is in moles, and temperature is in kelvins, the value for the ideal gas constant (R) is approximately 8.314 kPa·L/(mol·K).
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is Sulfuric Acid soluble if placed in water
Answers
Answer: Yes, sulfuric acid is highly soluble in water.
Explanation:
NEED THIS NEED TO GET OFF ITS MY BRO BDAY NEED IT FOR A BIG GRADE NEed it SO BAD
Answers
Answer:
he is right, top right
Explanation:
Can someone help me?
Answers
Answer: 0.160 M
Explanation:
if you help me i'll help you
Answers
An organism with 44XY chromosome
Answers
Answer:
Rabbit,Dolphin
Explanation:
There are more organism of 44 cromosomes.
A piece of metal with a volume of 2.45 mL has a density of 4.255g/mL. What is the mass of the metal?
Answers
Answer:
The answer is 10.42 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume = 2.45 mL
density = 4.255g/mL
We have
mass = 2.45 × 4.255 = 10.42475
We have the final answer as
10.42 gHope this helps you
I need a description for the rocks mass-spectrum
Table C. Arrangement of Layers with Rock Intrusion and Description of Rocks
PLEASE I NEED THIS ALL DONE QUICKLY AS POSSIBLE
(no cheap answers either)
Answers
Shale is a type of sedimentary rock that is formed from the accumulation of clay and silt-sized particles.
Description for the rocks mass-spectrumA rock's mass-spectrum is a graph that shows the relative abundance of each element present in a rock sample. The graph is created by using a mass spectrometer, an instrument that separates the different elements in a sample by their atomic mass. The resulting graph shows the relative abundance of each element as a peak, with the height of the peak representing the concentration of that element.
From the first attachment
The Cambrian period, which occurred around 540 million years ago, is known for the development and diversification of various forms of life, The rocks from this period are typically composed of shallow marine sandstones and shales, with some limestone formations. The mass-spectrum of these rocks would likely show a high concentration of calcium and carbon, as well as traces of other elements such as silicon and oxygen.
The Ordovician period, which occurred around 490-443 million years ago, is characterized by the diversification of marine life, including the first appearance of fish and the diversification of brachiopods, bryozoa, and corals. The rocks from this period are typically composed of shallow marine sandstones and shales. The mass-spectrum of these rocks would show a high concentration of calcium and carbon,
The Silurian period, which occurred around 443-416 million years ago, is characterized by the diversification of marine life, including the first appearance of jawed fish and the diversification of coral reef communities. The mass-spectrum of these rocks would likely show a high concentration of calcium and carbon, as well as traces of other elements such as silicon and oxygen.
The Devonian period, whicoccurred around 416-359 million years ago, is characterized by the diversification of land plants and the first appearance of amphibians. The rocks from this period are typically composed of a mix of marine and terrestrial sediments, including sandstones, shales, and limestones. The mass-spectrum of these rocks would likely show a high concentration of calcium and carbon, as well as traces of other elements such as silicon and oxygen.
The Carboniferous period, which occurred around 359-299 million years ago, is characterized by the diversification of land plants, including the first appearance of trees, and the first appearance of reptiles. The rocks from this period are typically composed of a mix of marine and terrestrial sediments, including sandstones, shales, and coal deposits. The mass-spectrum of these rocks would likely show a high concentration of carbon, as well as traces of other elements such as silicon and oxygen.
The Permian period, which occurred around 299-252 million years ago, is characterized by the diversification of reptiles, including the first appearance of dinosaurs. The rocks from this period are typically composed of a mix of marine and terrestrial sediments, including sandstones, shales, and limestones. The mass-spectrum of these rocks would likely show a high concentration of calcium and carbon, as well as traces of other elements such as silicon and oxygen.
Table C description
Shale is a type of sedimentary rock that is formed from the accumulation of clay and silt-sized particles. It is typically composed of clay minerals such as illite and kaolinite, as well as other minerals like quartz and feldspar. Shale can be found in a wide variety of environments, including marine, terrestrial, and lacustrine (lake) settings. Shale that contains fossilized remains of ancient sea creatures, such as ammonites, is called Ammonite shale.Limestone is a type of sedimentary rock that is composed primarily of calcium carbonate (CaCO3). It is formed from the accumulation of shells, coral, and other marine organisms, or through the precipitation of calcium carbonate from mineral-rich water. Limestone can be found in a wide variety of environments, including marine, terrestrial, and lacustrine settings. Limestone is a major rock type used in construction and industry.Basalt is a type of igneous rock that is formed from the cooling and solidification of molten magma. It is typically composed of plagioclase feldspar and pyroxene, as well as other minerals like olivine and amphibole. Basalt is commonly found in volcanic environments, and is the most common type of rock in the Earth's oceanic crust.Trilobite is a type of fossil, rather than a rock. Trilobites are extinct arthropods, which are thought to have first appeared around 540 million years ago during the Cambrian period, and went extinct around 252 million years ago during the Permian period. They were a diverse group of animals that lived in both marine and freshwater environments, and their fossils are commonly found in shale and limestone rocks from the Paleozoic era.Learn more here on Mass spectrum of rocs https://brainly.com/question/30349684
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What general term is used to describe the pure liquid (such as a pure water) obtained in such a process
Answers
In the chemical reaction, calcium carbonate (CaCO3) was heated to form two new
substances: calcium oxide (Cao) and carbon dioxide (CO2).
CaCO3 + CaO + CO2
A student heated 24.8 g of CaCO3. After the reaction, they measured 13.9 g of Cao.
What was the mass of the CO2 gas that escaped during the reaction?
38.79
O 1.78 g
0 24.8 g
10.99
Answers
Answer: 10.99
Explanation: because you take the Cao 13.9 and take CO2 which is 10.99 and it makes 24.8 . Which is CaCO3.
Decomposition reactions are the breakdown of chemical species into simpler parts. Decomposition reactions typically require energy input.
The mass of the CO2 gas that escaped = 10.99 g.
What is a decomposition reaction ?Decomposition reactions are the breakdown of chemical species into simpler parts. Decomposition reactions typically require energy input.When one reactant breaks down into two or more products, this is referred to as a decomposition reaction. This is represented by the following general equation: AB A + B. The breakdown of hydrogen peroxide to water and oxygen is an example of a decomposition reaction, as is the breakdown of water to hydrogen and oxygen.When one reactant breaks down into two or more products, this is referred to as a decomposition reaction. It is denoted by the general equation: AB A + B. In this equation, AB represents the reactant that initiates the reaction, and A and B are the reaction products.Molecular mass of CaO = 56.07 g
CO\(_2\) = 44.01 g
the mass of the CO2 gas that escaped = 13.9 x 44.01/ 56.07
= 10.99 g.
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Which subatomic particle(s) is found in the electron cloud of a carbon atom?
Answers
Similar to pretty much all atoms, the subatomic particles found in the electron clouds are known as electrons, so the answer to your question is electrons!
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What are the Oxidation numbers for H2AsO4-
Answers
i cant understand your question define briefly