What are the distinguishing features of each extraction process: pyrometallurgy, electrometallurgy, and hydrometallurgy? Explain briefly how the types of metallurgy are used in the production of(a) Fe;

Answers

Answer 1
1.PyrometallurgyThis techniques involves the high temperature at which the Chemical reactions took place between the gases and solids.Pyrometallurgy involves calcination, Roasting and smelting process.

 

 2.ElectrometallurgyThis technique involves the metallurgy operations that took place in electrolytic cell.Electro- winning and Electro-refining are some of the electrometallurgy process

  3. HydrometallurgyReactions involves aqueous solutions to extract metal, use this technique.Hydrometallurgy involves precipitation , distillation , adsorption and solid extraction operations.

Now,

Type of metallurgy are used in the production of Fe is Roasting and Smelting.

What is Roasting?Ore is heated strongly with other substances, usually with Oxygen.Process temperature is below the melting point.Some of Impurities is removed as volatile substance.

In this reaction,

 FeO changes to Fe₂O₃ to prevent the loss of iron during smelting.

4FeO +O₂→ Fe₂O₃.

Now,

  What is Smelting?The oxides of less electropositive metals like Pb, Zn, Fe, Sn, etc.These are reduced by strongly heating with coal or coke.Reduction of the oxide with Carbon at high temperature is known as Smelting.

Thus from the above conclusion we can say that , metallurgy are used in the production of Fe is Roasting and Smelting.

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Related Questions

Balance the nuclear equation by giving the mass number, atomic number, and element symbol for the missing species.
¹⁰B + ⁴He → ____

Answers

Balanced nuclear equation by giving the mass number, atomic number, and element symbol for the missing species is ¹⁰B + ⁴He → ¹⁴N + 1¹H

The missing species in the given nuclear equation is ¹⁴N and 1¹H.

Let's write the mass number, atomic number, and element symbol for the missing species:

Mass number of ¹⁴N = 14

Atomic number of ¹⁴N = 7

Element symbol of ¹⁴N = N (since the atomic number of nitrogen is 7)

Mass number of 1¹H = 1Atomic number of 1¹H = 1

Element symbol of 1¹H = H (since the atomic number of hydrogen is 1)Therefore, the main answer of the balanced nuclear equation is: ¹⁰B + ⁴He → ¹⁴N + 1¹H.

In order to balance a nuclear equation, it is essential that the total mass number and the total atomic number is conserved.

Balancing nuclear equations requires both the knowledge of atomic structure as well as knowledge of the laws of conservation of mass and charge.

A balanced nuclear equation is essential in understanding nuclear reactions and in predicting the outcomes of nuclear reactions.The balanced nuclear equation for the given nuclear equation is:¹⁰B + ⁴He → ¹⁴N + 1¹H. Conclusion:Thus, the missing species in the given nuclear equation is ¹⁴N and 1¹H.

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How do the strong ionic bonds affect the boiling and melting points of salts

Answers

Answer:

The more energy needed, the higher the melting point or boiling point . Since the electrostatic forces of attraction between oppositely charged ions are strong, their melting and boiling points are high.

Explanation:

hope this helps.

Which of the following is an electrolytic cell?
A. Silver (Ag) oxidized, gold (Au) reduced
B. Lithium (Li) oxidized, zinc (Zn) reduced
C. Aluminum (Al) oxidized, zinc (Zn) reduced
D. Iron(II) (Fe) oxidized, aluminum (AI) reduced

Answers

Iron (II) (Fe) oxidized, aluminium (Al) reduced. Hence, option D is correct.

What is an electrolytic cell?

An electrolytic cell converts electrical energy into chemical energy or vice versa.

Oxidation-reduction reactions are balanced by two half overall chemical equations into an oxidation equation and a reduction equation.

Iron (II) (Fe) oxidized, aluminium (Al) reduced of the following is an electrolytic cell.

Hence, option D is correct.

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how should spill cleaning materials be discarded

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Spill cleaning materials should be disposed of properly to ensure the safety of the environment and public health. It’s important to note that different types of spill cleaning materials require different disposal methods.

Here, correct answer will be

For example, absorbent materials like kitty litter, sand, and clay should be collected and placed in a sealable container for safe disposal.

Hazardous materials such as solvents and chemicals must be disposed of in accordance with local and regional environmental regulations. In some cases, these materials may need to be taken to a hazardous waste facility.

Additionally, any contaminated clothing or other materials should be disposed of in accordance with local laws. In general, proper disposal of spill cleaning materials is essential to ensure the safety of the environment and public health.

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Transition metal elements have atoms or ions with partially filled ________.
s subshells
p subshells
d subshells
f subshells
g subshells

Answers

Elements with partially filled outer electrons are referred to as allotropes (also called as transition metals). According to IUPAC, a transition element is an element with a partially filled d subshell.

Which is the voltage of an electron?

Electron charge. A negative charge particle is an electron. The magnitude of the electrostatic repulsion is 1.602 10-19 coulomb. An electron has 1/1837 the weight of a proton. Electron mass. An electron weighs 9.10938356 kilograms, or 10-31 pounds. As comparison to the weight of the proton, the mass of a e is extremely small.

Are electrons devoid of mass?

As a result, compared to a proton or neutron, an electron is thought to be almost massless, and its matter is not taken into account when determining an atom's mass number. The electron possesses a negative electric charge, which has been understood by scientists that since late 19th century. The cost of this fee was first calculated...

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Which is the most likely mode of radioactive decay for the radioactive nuclide carbon-14?

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The most likely mode of radioactive decay for the radioactive nuclide carbon-14 is beta decay.

During beta decay, a neutron in the carbon-14 nucleus is converted into a proton, releasing a high-energy electron called a beta particle. This transformation occurs because the neutron is unstable and wants to become more stable by converting into a proton.
The decay process can be represented by the equation:
^14_6C -> ^14_7N + ^0_-1e

In this equation, the carbon-14 nucleus (^14_6C) decays into a nitrogen-14 nucleus (^14_7N) by emitting a beta particle (^0_-1e).
Beta decay is a common mode of radioactive decay for isotopes with too many neutrons relative to protons. Carbon-14 is an example of such an isotope.
Carbon-14 is used in radiocarbon dating to determine the age of organic materials. By measuring the amount of carbon-14 remaining in a sample, scientists can estimate how long it has been since the organism died.

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Imagine you are looking at a bottle of salad dressing containing oil, vinegar, and water. Why are there two layers in the salad dressing? Water and vinegar are both hydrophobic and mix, whereas the oil is hydrophilic. Vinegar and oil are both hydrophobic and mix, whereas the water is hydrophilic. Water and vinegar are both hydrophilic and mix, whereas the oil is hydrophobic. Vinegar dissolves into both the oil and the water in this container.

Answers

Answer:

Oil and vinegar separate because it is a suspension

Explanation:

When you let suspensions sit the particles begin to layer out, in the salad dressing the oil layers out on top of the vinegar. The two layers of oil and vinegar don't actually dissolve in each other. The layer with the lower density (oil) floats on top of the layer with a higher density (vinegar)

Water and vinegar are both hydrophilic and mix, whereas the oil is hydrophobic. Oil and vinegar separate because it is a suspension

What is the difference between hydrophilic and  hydrophobic molecules ?

Hydrophilic molecule are water-loving polar molecule.

They interact with water or they are dissolved in water or water like polar solvent.

For instance, the phospholipid molecules of the plasma membrane has a hydrophilic phosphate group.

Hydrophobic is a water hating  substance which can not dissolve in water, but other non-polar solvent.

Thus hydrophobic substances are lipophilic in nature  and the hydrophobic solvents are used to  separate water-immiscible substances from water.

The layers of oil and vinegar can not  dissolve with each other. The oil layer has the  lower density floats on top of the layer with a higher density product called vinegar.

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7) Methyl alcohol (methanol) liquid is stored in a vessel. Its vapor is inerted with nitrogen to a total pressure of 2-inch of water gauge. (Assume a temperature of 25°C; 1 atm = 406.8 inches of water = 760 mmHg; LOLMeOH = 7.3% and UOLMeOH = 81%) a. Determine the saturated vapor pressure of methanol in the vessel in mmHg.(3 Marks ans: 125.9 mmHg) b. Determine the volume percent concentration of methanol in the vapor. (3 Marks ans: 16.5% MetOH) Hint: use Dalton law: Meto psat/Pabs =

Answers

The saturated vapor pressure of methanol in the vessel is 125.9 mmHg (rounded off to 3 significant figures). The volume percent concentration of methanol in the vapor is 73.2% (rounded off to 3 significant figures).

a. Saturated vapor pressure of methanol in the vessel in mmHg: The vapor pressure of methanol (MeOH) in the vessel can be determined using Dalton's law of partial pressures. MetOH psat = MetOH Pabs

Here, MetOH Pabs is the pressure exerted by the vapor of methanol in the vessel. It is equal to the total pressure in the vessel minus the partial pressure of the inert gas (nitrogen). Pabs = 2 inch of water gauge = 2 x 25.4 mm of water gauge / 1 inch of water gauge = 50.8 mm of water gauge

Total pressure in mmHg = Pabs x 760 mmHg / 406.8 inch of water gauge = 94.8 mmHg

Partial pressure of nitrogen = 2 inch of water gauge = 50.8 mm of water gauge

Partial pressure of methanol = MetOH Pabs MetOH psat = 126 mmHg (at 25°C)

Therefore, the saturated vapor pressure of methanol in the vessel is 125.9 mmHg (rounded off to 3 significant figures).

b. Volume percent concentration of methanol in the vapor: The volume percent concentration of methanol in the vapor can be determined using the ideal gas law and the Dalton's law of partial pressures. V = nRT / PV = volume of the vapor (L)n = number of moles of methanol gas R = gas constant T = temperature (K)P = pressure (atm)

Let's assume that the total volume of the vapor in the vessel is 1 L and the temperature is 25°C (298 K).

The number of moles of nitrogen gas (N2) in the vapor can be determined using the Dalton's law of partial pressures. N2 Pabs = Pabs - MetOH PabsN2 Pabs = 50.8 mm of water gaugeN2 Pabs = 50.8 mm of water gauge x 1 atm / 760 mmHg = 0.067 atmN2 V = nRT / PN2N2 V = (0.067 atm x 1 L) / (0.082 L atm/K mol x 298 K)N2 V = 0.0022 mol

The number of moles of methanol gas (MeOH) in the vapor can be determined using the ideal gas law. MetOH Pabs = MetOH psatMetOH Pabs = 125.9 mm Hg MetOH Pabs = 125.9 mmHg x 1 atm / 760 mmHg = 0.165 atmMetOH V = nRT / PMetOH V = (0.165 atm x 1 L) / (0.082 L atm/K mol x 298 K)MetOH V = 0.006 mol

The volume percent concentration of methanol in the vapor can be determined using the following equation.

Volume percent concentration of MeOH = MetOH V / (N2 V + MetOH V) x 100%

Volume percent concentration of MeOH = 0.006 mol / (0.0022 mol + 0.006 mol) x 100%

Therefore, the volume percent concentration of methanol in the vapor is 73.2% (rounded off to 3 significant figures).

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Hydrogen gas caught fire quickly in the Hindenberg accident. In comparison, neon gas and helium gas are nonreactive. This is why helium is safe for aircraft and neon is safe for electrical signs. Which statement best explains why helium and neon have similar chemical properties?

Answers

Answer:

Helium and Neon have similar chemical properties because both of them completely fill the outer shell of their atoms' electrons, so there is nothing to share with other atoms, neither with the same element nor with any other element.

Explanation:  

Helium and Neon are both  noble gases . As elements react, their atoms, by losing, acquiring, or sharing electrons, complete their outer shells. Noble gas atoms already have full outer shells, so there is no tendency for them to lose, gain, or share electrons. There are incomplete outer shells of atoms of group 1 and 7 elements (so they are reactive)

Chemical properties of HELIUM and NEON -:

In group 8(or 0) of the periodic table, on the far right side, the Noble Gases are contained. Helium, neon, argon, krypton, xenon and radon are their names. They are extremely colourless and unreactive. They do not form bonds, so they still remain as single (monatomic) atoms. There is very little chemical reactivity in them.

Hence, helium and neon have similar chemical properties as they are the most stable due to having the maximum number of valence electrons their outer shell can hold.

How do intermolecular forces affect the shape of a drop?

Answers

The intermolecular forces affect the shape of a drop because a sphere has the smallest feasible surface vicinity for a given volume.

The intermolecular appealing interactions among water molecules reason the droplet to undertake a round shape. This maximizes the wide variety of appealing interactions and minimizes the wide variety of water molecules on the floor. Surface tension: Liquids with more potent intermolecular forces generally tend to have better surface anxiety than people with susceptible intermolecular forces. For example, in case you pour a totally small quantity of water on a table, it's going to generally tend to acquire collectively in a single huge drop.

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Hello! I have a green pigment called the chlorophyll. I also absorb solar
energy to do the process of photosynthesis. What am I?

Answers

Answer:

flower

Explanation:

A reaction of 41.9 g of Na and 30.3 g of Br2 yields 36.4 g of NaBr . What is the percent yield?

2Na(s)+Br2(g)⟶2NaBr(s)

Answers

Answer: The percent yield is, 93.4%

Explanation:

First we have to calculate the moles of Na.

\(\text{Moles of Na}=\frac{\text{Mass of Na}}{\text{Molar mass of Na}}=\frac{41.9g}{23g/mole}=1.82moles\)

Now we have to calculate the moles of \(Br_2\)

\({\text{Moles of}Br_2} = \frac{\text{Mass of }Br_2 }{\text{Molar mass of} Br_2} =\frac{30.3g}{160g/mole}=0.189moles\)

\({\text{Moles of } NaBr} = \frac{\text{Mass of } NaBr }{\text{Molar mass of } NaBr} =\frac{36.4g}{103g/mole}=0.353moles\)

The balanced chemical reaction is,

\(2Na(s)+Br_2(g)\rightarrow 2NaBr\)

As, 1 mole of bromine react with = 2 moles of Sodium

So, 0.189 moles of bromine react with = \(\frac{2}{1}\times 0.189=0.378\) moles of Sodium

Thus bromine is the limiting reagent as it limits the formation of product and Na is the excess reagent.

As, 1 mole of bromine give = 2 moles of Sodium bromide

So, 0.189 moles of bromine give = \(\frac{2}{1}\times 0.189=0.378\) moles of Sodium bromide

Now we have to calculate the percent yield of reaction

\(\%\text{ yield}=\frac{\text{Actual yield}}{\text{Theoretical yield}}\times 100=\frac{0.353 mol}{0.378}\times 100=93.4\%\)

Therefore, the percent yield is, 93.4%

Calculate the volume of 0.500 M C2H3OH and 0.500 M CH3O-Na required to prepare 0.100 L of pH = 5.00 buffer with a buffer strength of 0.100 M. The pKa of C2H302H is 4.75. C2H302H: Number C2H3O2Na: Number

Answers

Volume of 0.500 M C2H3OH and 0.500 M CH3O-Na that is required to prepare 0.100 L of pH = 5.00 buffer with a buffer strength reaction of 0.100 M = 31.6 mL of 0.500 M C2H3OH and 17.4 mL of 0.500 M CH3O-Na

To calculate the volume of 0.500 M C2H3OH and 0.500 M CH3O-Na required to prepare 0.100 L of pH = 5.00 buffer with a buffer strength of 0.100 M, we need to make use of the Henderson-Hasselbalch equation.Henderson-Hasselbalch equation is given as:  pH = pKa + log ([A-] / [HA])Where, pH is the pH of the buffer solution.

Pka is the negative logarithm of the acid dissociation constant ([H+][A-] / [HA]).[A-] is the concentration of the conjugate base.[HA] is the concentration of the weak acid.Let us calculate the concentration of the weak acid.  From the pH value, we can calculate the [H+].5.00 = 4.75 + log ([A-] / [HA])[A-] / [HA] = antilog (5.00 - 4.75) = antilog (0.25) = 1.78[Molar]Now, the buffer strength is 0.100 M.

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Shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting. Select one: D O True O False

Answers

The given statement “Shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting” is true because shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting. It is becoming more difficult to predict demand, and there is a higher probability of product failure than there was in the past.

There are several factors responsible for this increased demand uncertainty and difficulty in forecasting. One of the most significant factors is the decrease in product life cycle length. Shorter product life cycles imply that new items and designs are being introduced on a more frequent basis.Product life cycles are the stages that a product passes through from conception to eventual obsolescence. It starts with the development of the product and continues until the product is no longer in use. It includes the introduction stage, growth stage, maturity stage, and decline stage.A product's life cycle has an impact on supply chain management since it has a significant impact on demand forecasting. As a result, any adjustments in demand forecasts must be accompanied by adjustments in supply chains. In a nutshell, shorter product life cycles have resulted in increased demand uncertainty and difficulty in forecasting, making it more challenging to manage supply chains effectively.

So, shorter product life cycles have led to increased demand uncertainty and difficulty in forecasting is true.

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Which of the following changes would result in an increase of nitrogen dioxide, NO2?
N204() <---> 2NO2(g)
AH° = 58 kJ

Answers

This can be solved according to Le C ha.tellors principle

Any change in concentration, temperature, pressure can shift the equilibrium

So

Here to increase NO_2

We need to increase the temperature or increase the concentrations of reactants

The addition of N₂O₄(g) to the system would result in an increase of nitrogen dioxide, NO₂.

The balanced equation provided shows the equilibrium between nitrogen dioxide (NO₂) and dinitrogen tetroxide (N₂O₄). According to Le Chatelier's principle, a change in conditions will cause the system to shift in a way that opposes the change. In this case, if N₂O₄ is added to the system, the equilibrium will shift to the right to consume the added N₂O₄ and produce more NO₂.

Based on the given information, the enthalpy change (AH°) for the reaction is 58 kJ. This indicates that the forward reaction (from N₂O₄ to 2NO₂) is endothermic, meaning it requires heat to proceed. Adding N₂O₄ to the system will provide more reactant molecules, increasing the concentration of N₂O₄ and causing the equilibrium to shift towards the products (more NO₂) to minimize the effect of the added N₂O₄.

Therefore, the addition of N₂O₄ to the system will result in an increase in nitrogen dioxide, NO₂, as the equilibrium shifts to the right to restore equilibrium.

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29. A static member function may be called __________ any instances of its class are defined.

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A static member function may be called without creating an instance of its class.

A static member function may be called even before any instances of its class are defined. This is because static members are associated with the class itself, rather than individual instances, allowing the function to be accessed without creating an instance of the class.When a data member is declared as static , only one copy of the data is maintained for all objects of the class. Static data members are not part of objects of a given class type.

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A static member function may be called without creating an instance of its class.

A static member function is a member function of a class that is associated with the class rather than an instance of the class. This means that a static member function can be called without creating any instances of the class.

It is defined using the static keyword in the class declaration and can access only static data members of the class. Since it is not tied to any particular instance of the class, it can be called using the class name, rather than an object of the class.

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Which statement gives two characteristics of all liquids?

They spread out to fill space and have atoms that vibrate in place.
They have atoms that vibrate in place and have a definite shape.
They will change shape to fit a container and have definite volume.
They have definite volume and have atoms that move freely in all directions.

Answers

The third one is the answer

Answer:

C

Explanation:

What does a Primary Consumer eat?

Answers

Plants or algae, they are herbivores

in a laboratory experiment, a student found that a 195-ml aqueous solution containing 2.494 g of a compound had an osmotic pressure of 12.2 mmhg at 298 k. the compound was also found to be nonvolatile and a nonelectrolyte. what is the molar mass of this compound?

Answers

The compound's mole ratio in a laboratory setup is 3125.12 g/mol, according to the statement.

Water: an electrolyte or not?

Water that is completely free of ions is said to be pure. This could conduct electricity as a result. The inclusion of ions in the mixture allows the solution to carry an electric current when other substances, such as ionic compounds, are dissolved in water.

Briefing:

Osmotic pressure is given by;

π = C * R * T

∵ 760 mmHg = 1 atm

10.3 mmHg = 1 * 12.2/760 atm

= 0.016 atm

π = no. of moles * R * T/volume (L)

π = Weight (g) * R * T / Molar mass * V (L)

0.016 atm = 2.494 * 0.082 L atm K⁻¹ mol⁻¹ * 298 K/ M.W * 195 * 10⁻³

M.W = 3125.12 g/mol

Consequently, the compound's molar mass is 3125.12 g/mol.

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How many atoms would be in 4.5 moles of Oxygen gas?


7.47 x 10-24 atoms O2​


2.71 x 1024 atoms O2


4.5 x 1023 atoms O2

Answers

Answer:

2.70..would be number of moles..2.71×1024 atoms

A molecule is

A a group of atoms bonded by ionic bonds.
B a group of atoms bonded by covalent bonds.
C a group of ions bonded by covalent bonds.
D a group of atoms bonded by metallic bonds.

Answers

Answer:

B.

Explanation:

Atoms make up molecules and ionic bonds cannot make up a molecule because they do not share electrons like in a covalent bond.

22) We breathe more heavily during exercise because our cells

Answers

During exercise, our body needs more energy to fuel our muscles, and this energy is produced by a process called cellular respiration. Cellular respiration requires oxygen to break down glucose and produce ATP, the main source of energy for our cells.

To meet the increased demand for oxygen, our body increases our breathing rate and depth. This allows more oxygen to enter our lungs, and more carbon dioxide, a byproduct of cellular respiration, to be removed from our body. The oxygen-rich air then travels to our cells, where it can be used to produce ATP more efficiently.

In addition, our heart rate also increases during exercise to deliver oxygenated blood to our muscles more quickly. This enables our muscles to work harder and for longer periods of time, leading to improved endurance and overall fitness.

Overall, the increase in breathing during exercise is a vital adaptation that allows our body to meet the demands of physical activity and sustain energy production in our cells.

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Which of the following is a result of the specific heat differences between land and ocean?

A. Ocean tides are created.
B. Volcanoes are created.
C. Saltwater is created.
D. Breezes are created.

Answers

THE ANSWER IS A. OCEAN TIDES ARE CREATED

How many more valence electrons does this atom need to fulfill the Octet
Rule? (Urgent need help)

How many more valence electrons does this atom need to fulfill the OctetRule? (Urgent need help)

Answers

Answer: The octet rule is a bonding theory used to predict the molecular structure of covalently bonded molecules. According to the rule, atoms seek to have eight electrons in their outer—or valence—electron shells. Each atom will share, gain, or lose electrons to fill these outer electron shells with exactly eight electrons.

Explanation:

What is the oxidation number of sulfur in na2s2o3 ?.

Answers

Answer:

Therefore, the oxidation state of sulphur atoms in Na2S2O3 is −2 and +6.

what is 10x412x3021x13123

Answers

163 335 681 960 is the answer

Somebody pls help me with this question thx

Somebody pls help me with this question thx

Answers

Answer:

cell wall > skeletal system (maybe)

cell membrane > skin (maybe)

nucleus > brain

mitochondria > digestive system

Explanation:

There are four types of charges present in Oxide. Draw a graph
and describe how each feature appears in C-V.

Answers

Oxides contain four types of charges: fixed charges (Qf), trapped charges (Qt), interface charges (Qit), and mobile ions (Qm).C-V graphs are used to assess the electrical characteristics of a dielectric interface. C is the capacitance of the oxide layer, and V is the applied voltage on the metal electrode that forms the oxide layer.

As the capacitance of the oxide layer changes with the applied voltage, the C-V graph shows the capacitance change. The graph below shows how each feature appears in a C-V graph.
[Blank]Fixed charge (Qf)Fixed charges are immobile, so they can only interact with the applied voltage via their electrostatic effect. As a result, when the applied voltage is greater than a specific threshold voltage (VT), the fixed charges create a dip in the C-V graph.

[Blank]Mobile ions (Qm)Mobile ions are also present in the oxide layer, and they can move in response to an electrical field. The mobile ions influence the electrostatic potential in the oxide layer, which alters the capacitance. Because of this influence, the C-V graph has a tiny dip before the hump known as the tail.

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The hydrogen gas foed in a chemical reaction is collected over water at 30 ∘C-at a total pressure of 742 mmHg. The vapor pressure of water at 30 C is 31.8 mmHg Part A What is the partial pressure of the hydrogen gas collected in this way? Express your answer in millimeters of mercury to three significant figures.

Answers

The partial pressure of the hydrogen gas collected in this way is 710 mmHg. When collecting a gas over water, the total pressure of the system includes the vapor pressure of water at that temperature

When collecting a gas over water, the total pressure of the system is the sum of the partial pressure of the gas and the vapor pressure of water at that temperature. In this case, the total pressure is given as 742 mmHg, and the vapor pressure of water at 30°C is 31.8 mmHg.

To find the partial pressure of the hydrogen gas, we need to subtract the vapor pressure of water from the total pressure. Therefore, the partial pressure of the hydrogen gas can be calculated as:

Partial pressure of hydrogen gas = Total pressure - Vapor pressure of water

Partial pressure of hydrogen gas = 742 mmHg - 31.8 mmHg

Partial pressure of hydrogen gas = 710 mmHg

In this chemical reaction, the collected hydrogen gas exerts a partial pressure of 710 mmHg.

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Which of the following statements concerning mixtures is correct?
a. The composition of a homogeneous mixture cannot vary.
b. A homogeneous mixture can have components present in two physical states.
c. A heterogeneous mixture containing only one phase is an impossibility
d. More than one correct response..

Answers

The correct option from the given statements concerning mixtures is (d) more than one correct response.

The statement (a) "The composition of a homogeneous mixture cannot vary" is incorrect as the composition of a homogeneous mixture can vary. For example, a mixture of salt and water is homogeneous and its composition can vary depending on the amount of salt and water mixed in it.

The statement (b) "A homogeneous mixture can have components present in two physical states" is correct. Homogeneous mixtures are mixtures that are uniform throughout their composition, meaning that there is no visible difference between the components of the mixture. For example, a mixture of ethanol and water is homogeneous and its components are present in two physical states (liquid and liquid).

The statement (c) "A heterogeneous mixture containing only one phase is an impossibility" is incorrect. A heterogeneous mixture is a mixture where the components are not evenly distributed and the mixture has different visible regions or phases. However, it is possible for a heterogeneous mixture to contain only one phase. For example, a mixture of oil and water is heterogeneous but can have only one phase.

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Find the missing probability. P(B)=1/2,P(AB)=7/40,P(A|B)=? A. 2/5 B. 7/20 C. 1/2 D. 7/40 what is the maximum number of carbon positions that can be labeled with 14c in any one glucose molecule? Which is the largest of the followin fractions? 7/12, 2/3,5/6,3/4, 5/8, (a) 2/3 (b) 3/4 (c) 5/ 5 The medical term meaning instrument used to record electrical activity of the brain is? Explain how Mixed-Integer Linear programming (MILP) works and how it can help answer/resolve demand forecast issue in Supply chain criticize the following ""proof"" of the fact that if n and m are even then n m is even. ""we know that n {NEEDED A.S.A.P.} What is the surface area of the square pyramid represented by the net?Enter your answer in the box.[25 Point Reward.] By wisely using your knowledge of how centripetal and centrifugal forces affect your driving, you can become a better and safer driver. What wartime strategies used in the pacific theater by all parties should be considered war crimes? i need the answer please.... PLEASE HELP ME WITH THIS!!! Aldo Redondo drives his own car on company business. His employer reimburses him for such travel at the rate of 45 cents per mile. Aldo estimates that his fixed costs per yearsuch as taxes, insurance, and depreciationare $2,200. The direct or variable costssuch as gas, oil, and maintenanceaverage about 18.5 cents per mile.How many miles must he drive to break even? In how many types can the traditional painting style in nepal be divided and studied? Give a brief introduction of each. A ball is thrown vertically in the air with a velocity of 95 ft/s. The ball is at a height of 120 ft. An app that can share speaking assignments with your students? What can you do if your passions are not your strengths? (b) What will be the change in pH of the buffer of 7 if 5 mL of 5 N NaOH is addedto 1000 mL of the buffer? I HAVE 5 MINS TO TURN DIS IN TOO CAN YALL HELP !! 30 points !! I NEED DESPERATE HELP. The questions are in the pictures, and i need help with ALL of it. THANK YOU Identify the House leadership's main goals.