The mass of the oxygen used during the reaction is 8.16 g
The reaction is given as ,
4Fe + 3[tex]O_{2}[/tex] → 2[tex]Fe_{2} O_{3}[/tex]
The molar ratio of the above reaction = 4:3
It means four moles of Fe react with 3 moles of oxygen molecule to form Iron Oxide .
mole of iron = given mass / molar mass = 19.43 g / 55.845 g/mole = 0.34 mole
If four moles of Fe react with 3 moles of oxygen molecule to form Iron Oxide .
The number of moles of oxygen = 3 moles × 0.34 mole / 4 moles = 0.22 mole
The number of moles of oxygen = given mass / molar mass = 0.22 mole
The number of moles of oxygen = given mass / 32= 0.22 mole
given mass = 0.22 × 32 = 8.16 g
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Answer: The answer is 1.48
Explanation:
Match the type of mechanical waves to images of particle motion. In each case, the wave moves from left to right.
Image 1 - Surface wave
Image 2 - Longitudinal wave
Image 3 - Transverse wave
What is a wave?The term wave refers to a disturbance along a medium that transfers energy. We know that a transverse wave is one in which the direction of wave motion is perpendicular to that of the disturbance. This occurs in a water wave.
The Longitudinal wave is one in which the direction of the wave motion is parallel that of the disturbance. This is common in a spiral spring. A surface wave could be seen during an earthquake occurrence.
Let us now match the waves;
Image 1 - Surface wave
Image 2 - Longitudinal wave
Image 3 - Transverse wave
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What is the oxidation state on Ec in the formula below? Ec4O2
The oxidation state on Ec in the given chemical compound Ec₄O₂ is determined as +1.
What is oxidation state?
The oxidation number or oxidation state, is the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.
The given compound;
= Ec₄O₂
The oxidation state of Ec is calculated as follows;
let the oxidation state = x
4x + (2 x -2) = 0
4x - 4 = 0
4x = +4
divide both sides of the equation by "4"
4x/4 = +4/4
x = +1
Thus, the oxidation state on Ec in the given chemical compound Ec₄O₂ is determined as +1.
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A sample of metal has a mass of 20.27 g, and a volume of 4.89mL. What is the density of this metal
4145.19 g/L is the density of this metal.
A ratio of an object's mass to volume can be used to determine its density. Mass per unit volume is the measurement unit as a result.
From a physicist's point of view, mass can be described as a measurement of the quantity that is inside a body, omitting elements like the object's volume and any forces that might be exerting pressure on it.
The volume of an object is a measure of how much space it takes up in three dimensions.
ρ = m ÷ V (Density is Mass divided by Volume)
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The mass unit associated with density is usually grams. If the volume (in mL or cm3 ) is multiplied by the density ( g/mL or g/cm3 ) the volume units will cancel out, leaving only the mass units. Keep in mind that the volume and density must use the same volume unit for the cancellation.
If a large marshmallow has a volume of 2.75 in3 and density of 0.242 g/cm3 , how much would it weigh in grams? 1 in3=16.39 cm3 .
The mass of the marshmallow is 10.9 g.
What is the relationship between mass, volume and density of a substance?The mass of a substance is the quantity of matter present in that substance.
The volume of a substance is the amount of space a given mass of that substance occupies.
The density of a substance is the ratio of the mass and a given volume of that substance.
Therefore, the relationship between mass, volume and density is given below as:
Density = mass/ volumeFrom the data provided:
volume of the marshmallow = 2.75 in³
1 inch³ = 16.39 cm³
volume in cm³ = 16.39 * 2.75
volume of the marshmallow = 45.07 cm³
density of the marshmallow = 0.242 g/cm³
Mass of the marshmallow = volume × density
Mass of the marshmallow = 0.242 g/cm³ * 45.07 cm³
Mass of the marshmallow = 10.9 g
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Name two branches of Chemistry and give an example for each of what that branch has offered to society.
biomedical; kidney function testing, blood testing (healthcare)
analytical; water and soil testing (provides well balanced nutrition for us)
a.
Neutrons have a neutral charge, a mass of 1 amu, and are found in an atom's ______
b.
Protons are a little smaller than neutrons, they still have a mass of 1 amu though. They are found inside an atom's nucleus and carry a
_______ charge.
C.
Electrons almost have no mass, it's so small we say it is 0 amu. They sail around the nucleus in the _______ They have a ______
charge.
Neutrons have a neutral charge, a mass of 1 amu, and are found in an atom's Nucleus , Protons are a little smaller than neutrons, they still have a mass of 1 amu though. They are found inside an atom's nucleus and carry a positive charge, Electrons almost have no mass, it's so small we say it is 0 amu. They sail around the nucleus in the orbit, They have a negative charge
Atoms of all elements except for most atoms of hydrogen have neutrons in their nucleus unlike protons and electrons, which are electrically charged, neutrons have no charge they are electrically neutral. that's why the neutrons in the diagram above are labeled n⁰ and the zero stand for zero charge neutron has a neutral charge
Protons are found in the nucleus of the atom and this is a tiny, dense region at the center of the atom protons have a positive electrical charge of one (+1) and a mass of 1 atomic mass unit proton carry positive charge in the nucleus of atom
Electrons are one of three main types of particles that make up atoms and protons and neutrons, which consist of smaller, simpler particles, electrons are fundamental particles that do not consist of smaller particles electron has 0 amu and they have negative charge around the nucleus in the in the orbit called electron
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What type of reaction is shown below?
CaCO3(s)→ Cao(s) + CO₂(g)
O A. Decomposition
OB. Single-displacement
O C. Double-displacement
OD. Combustion
8. A 9.7 ounce milk shake costs $3.45. There are 16 ounces in a pound. Determine the cost of a 5.5kg milkshake.
(454g per pound)
(10^-3 kilo unit = 1 unit)
The cost of a 5.5kg milkshake if 9.7 ounce milk shake costs $3.45 is $68.915.
Cost of 9.7 ounce milk shake = $3.45
Conversion of ounces into poundOne pound is equal to 16 ounces.
1ounces contain 1/16 pound.
9.7 ounces contain (1/16) × 9.7 pound.
9.7 ounces contain 0.606 pounds.
Cost of 0.606 pounds milk shake = $3.45
Conversation of pound into Gram1 pound = 454g.
0.606 pounds = 454 × 0.606g
0.606 pounds = 275.12g
Conversation of gram into kilogram1gram = 10^-3 kilo gram
275.12 gram = 275.12 × 10^-3 kilo gram
So, cost of 0.27512 kg milk shake = $3.45
cost of 1 kg milk shake = $3.45/ 0.27512 = $12.53
cost of 5.5 kg milk shake = $12.53 × 5.5 = $68.915
Thus, we calculated that the cost of a 5.5kg milkshake if 9.7 ounce milk shake costs $3.45 is
$68.915.
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The diagram below shows the different phase transitions that occur in matter.
Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?
A material changes physically when its state changes. They don't involve any alterations to the matter's chemical composition and are reversible. State changes that occur frequently include melting, freezing, sublimation, deposition, condensation, and vaporization.
Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1?
"Arrow 4."
The energy required to go from a liquid to a gas is equivalent to that required to go from a gas to a liquid.
The process by which a substance transforms from the liquid phase to the gaseous state is known as boiling.
Diagram of water in phase:
Water changes from a liquid to a gas through the phase-shifting process of evaporation (water vapor).
Water changes its state from a gas to a liquid during the phase shift process known as condensation, and the resulting vapor turns into a cloud.
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Answer: arrow 4
Explanation: just took the test ;-)
How do you find the volume of an irregularly shaped object?
Fill a beaker with water half full. Take note of the original line. Drop the object in. Note the displacement of the water. Subtract the New water level by the old water level. This is volume.
You have been given a sample of dirt on the a slide. Describe the process of how you are going to find an organisms in that dirt sample.
PLEASE HURRY TYSM
The micromorphology is a process we are going to use to find an organisms in that dirt sample.
What is micromorphology?Micromorphology is defined as the fine level structure or morphology of an organism, mineral, soil and dirt component visible through microscope.
It is the microscopic study of soil, dirt and sediments.
It is a branch of soil science that is concerned with the description, interpretation and to a increasing extant the measurement of components, features and fabrics in soil or dirt at microscopic level.
Thus, the micromorphology is a process we are going to use to find an organisms in that dirt sample.
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Total # of molecules in 2ZnSO4?
12.044x10^23 molecules in 2ZnSO4
as it is seen there are 2 moles in zinc sulphate
To find no of molecules in 2 moles of zinc sulphate
=no of moles × no of avogadro number
= 2×6.02214x10^23
= 12.044x10^23 molecules
A "mole" is the quantity of a material that is precisely 6.02214076 X 1023 particles in the International System of Units. The particles might be molecules, ions, or atoms.The term "mole," which can alternatively be spelt "mol," refers to a typical scientific unit of measurement in chemistry used to calculate large quantities of extremely small things like electrons, molecules, or other specified items. The Avogadro's Number (6.02214076 X 1023), which is constant for any element or set of particles, defines the mole as an extraordinarily enormous number of units. The International System of Units chose this value as the mole definition (SI)To know more about mole
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ANSWER ASAP FORF BRAINLIEST!!!!!
For this and the following two questions, determine the density of a substance (in g/dL) of a sample with a mass of 8.3 x 10-1 dag and a volume of 4.10 mL. What is the right-most significant figure after performing the calculation in scientific notation?
The density of a substance (in g/dL) of a sample with a mass of 8.3 x 10-¹ dag and a volume of 4.10 mL is 202.44g/dL.
How to calculate density?The density of a substance is the measure of the mass of matter contained by a unit volume.
The density of a substance can be calculated by dividing the mass of the substance by its volume.
According to this question, a substance with a mass of 8.3 x 10-¹ dag has a volume of 4.10 mL. The density can be calculated as follows:
1 dag = 10g0.83 dag = 8.3g 1 millilitre = 0.01 decilitre4.10millitre = 0.041 deciliterDensity = 8.3g ÷ 0.041dL
Density = 202.44g/dL
Therefore, the density of a substance (in g/dL) of a sample with a mass of 8.3 x 10-¹ dag and a volume of 4.10 mL is 202.44g/dL.
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Insulin is biological molecule that regulates glucose levels in the human body.
Its chemical formula is C256H387N65079S6
Determine the percent composition of one of the elements of insulin. (25 points)
Show your work. (25 points)
Reveal the element chosen in the subject line. (25 points)
Share your % composition with a classmate that determined the % composition of a different element (25 points)
Insulin is a protein composed of chains, an a series with 21 amino acids and a B chain with 30 amino acids which are related together by using sulfur atoms. Insulin is derived from a seventy four-amino-acid prohormone molecule referred to as proinsulin.
The primary reason of insulin is to regulate the body's power deliver via balancing micronutrient stages throughout food intake 30. Insulin is crucial for transporting intracellular glucose to insulin-based mobile tissues together with the liver, muscle, and adipose tissue.
Insulin facilitates preserve blood sugar levels inside regular limits. It does this by means of taking glucose from the bloodstream and transporting it to the body's cells. Cells use glucose for strength and shop excess inside the liver, muscle, and adipose tissue.
Insulin offers cells with glucose for strength via reducing the frame's blood sugar levels and helping cells take in glucose. whilst blood sugar is too low, the pancreas releases glucagon.
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A light green powder is
heated in a test tube. A gas is given off while
the solid becomes black. What type of change is
occurring? Explain your reasoning.
The sample is undergoing chemical change.
When one chemical material changes into one or more others, as when iron rusts, this is referred to as a chemical change.
There are five signs that shows us that the object is undergoing chemical change-
1. Change of colour
2. Change of temperature
3. Gas evolution
4. Precipitate formation
5. Production of smell
Therefore According to the given question the sample is giving off a solid precipitate of black colour. Also, there is evolution of gas so the given sample is undergoing a chemical change.
Additionally, this is a type of Decomposition reaction where in the gas evolved is a Carbon dioxide. Also the given sample is a Compound because two products are formed.
Hence, it is a chemical change.
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Iron, carbon, and phosphorus are elements found in the periodic table. Tests involving these three elements would show that at normal room temperature
Which statement about exoplanets is true?(1 point)
Responses
They only appear once before they disappear in space.
They only appear once before they disappear in space.
They are discovered when they dim a star they pass by.
They are discovered when they dim a star they pass by.
They are objects that are no longer considered planets.
They are objects that are no longer considered planets.
They can be detected by ordinary telescop
They are discovered when they dim a star they pass by ' is true statement about exoplanets among all .
So , B is correct option .
In our solar system, every planet revolves around the Sun. Exoplanets are planets that revolve around other stars . Exoplanets are extremely difficult to directly observe using telescopes. The intense light from the stars they orbit obscures them .
Therefore, astronomers employ various techniques to find and research these far-off planets. By observing the impacts that these planets have on the stars they circle, astronomers look for exoplanets.
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Hydrologists are closely monitoring the health of a reservoir to determine if it will remain a suitable habitat for a rare species of fish. Which species would make the BEST bioindicator?
Responses
A Species C, a microbacterium that records show has lived in the reservoir for at least 70 years and can tolerate only slight variations in pH and dissolved oxygen levels.Species C, a microbacterium that records show has lived in the reservoir for at least 70 years and can tolerate only slight variations in pH and dissolved oxygen levels.
B Species A, a migratory bird which stops in the reservoir zone twice a year in great numbers.Species A, a migratory bird which stops in the reservoir zone twice a year in great numbers.
C Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures.Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures.
D Species D, a local hawk that lives in the reservoir zone year-round and preys upon some aquatic wildlife from the reservoir as well as many species from areas outside the reservoir zone.
The species that would make the BEST bioindicator is option C: Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures. Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures.
What are reservoir?Humans, animals, and the environment are known to be the constituent of reservoirs. The source from which an agent is moved to a host may or may not be is known to be the reservoir.
For instance, since the soil serves as the reservoir for Clostridium botulinum, such that canned food harboring C. botulinum spores is the main reason of botulism diseases.
Therefore, The species that would make the BEST bioindicator is option C: Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures. Species B, a hardy bacterium that lives in the reservoir and is able to tolerate a wide range of pH’s and water temperatures.
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Which of the following is an example of how financial goals change due to a value shift?
O buying a new wallet due to wear and tear to your current wallet
O moving from the city to suburbs after having children
O replacing a new phone after losing your old phone
O selling your old computer online to have funds for a new computers
Buying a new wallet due to wear and tear to your current wallet is referred to an example of how financial goals change due to a value shift and is denoted as option A.
What is Value shift?This is defined as the movement between the positive and negative values along a global spectrum of value and is usually dependent on different types of factors.
In this scenario, a torn wallet as a result of wear and tear means it has a negative value and having financial goals to buy a new one is referred to as the most appropriate choice.
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Answer: Moving from the city to suburbs after having children.
Explanation:
1) Once you start saving money, what can be your next step toward financial stability?
Investing it in a wise manner
2) Why is it important to track your income and your expenses?
Because knowing whether you can afford your lifestyle or not is the 1st goal of financial literacy
3) As you grow older, which of these might make you change your personal finance decisions more?
Your family priorities
4) Which showed you finance 1st?
Your needs
5) Which of the following is an example of how financial goals change due to value shift?
Moving from the city to suburbs after having children
6) Which expense is a spending want?
Movie tickets
7) Which options show a financial goal? Select the 2 correct answers
Paying off a credit card & saving for college
8) Which is a common way to spend money from your bank to a bank in a different country?
Wire transfer
9) How can you deposit a paper check?
A & C
10) What is typically included in COGS?
All of the answers are correct
11) What is typically considered part of SG&? Slect the 2 correct answers
Billing cost & commissions
12) What is another term for income statement?
profit and loss (P&L) statement
13) What is another name for an emergency fund?
A rainy day fund
14) What is defined as a budget surplus?
Take-home pay exceeds spending
15) Is using 401(K) money in an emergency the best idea?
No, early withdrawal of 401(K) money will incur a penalty
just took the Earning and Spending Unit Test.
A hamster in a ball begins its journey 5 feet to the left of a refrigerator, travels 20 feet to the right of the refrigerator, and
ends its journey directly in front of the refrigerator.
If negative values are assigned to positions to the left of its starting position and positive values are assigned to positions
to the right of its starting position, what is the displacement of the hamster?
(1 point)
O 5 feet
O-5 feet
O 0 feet
O 20 feet
The displacement of the hamster ball is equal to -5 feet. Therefore, option (B) is correct.
What is displacement?The displacement of an object can be demonstrated as the change in the position of an object. The displacement can be defined as the minimum length between the initial and the final point of an object.
The displacement can be defined as a vector quantity posses both direction of displacement and magnitude. Therefore, the measurement of the displacement of an object includes direction.
The S.I. unit of the displacement meters and the C.G.S. unit are centimeters the same as the distance.
A hamster in a ball starts its journey 5 feet to the left of a refrigerator, travels 20 feet to the right of the refrigerator, and ends its journey in front of the refrigerator.
Therefore, the displacement of the hamster ball is equal to -5 feet.
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If you take a 13.0- mL portion of the stock solution and dilute it to a total volume of 0.650 L , what will be the concentration of the final solution?
To make a stock solution, weigh out the proper amount of a pure solid or measure out the proper amount of a pure liquid, put it in the right flask, and then dilute it to the desired volume. Depending on the intended concentration unit, many methods can be used to measure the reagent.
If you take a 13.0- mL portion of the stock solution and dilute it to a total volume of 0.650 L , what will be the concentration of the final solution?
"The final solution's concentration would be 0.26M."
By adding extra solvent, you are lowering the concentration of the stock solution in the issue (This process is known as dilution).
Since you increased the volume of the fluid from 13 to 650 milliliters, it was diluted:
50 times = 650 mL / 13 mL
We must now take the concentration of the stock solution in order to determine the concentration of a final solution.
If the standard solution is 13M, then
The final solution's concentration would be 13M / 50 = 0.26M.
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Gold has an atomic mass of 197.0 grams per mole. How many moles of gold is 10 grams? How many gold atoms are found in 10 grams of gold?
. 2.514g Ca, 1.004g O empirical formula
The empirical formula of the given compound is [tex]CaO[/tex].
A chemical compound's empirical formula in chemistry is the simplest whole number ratio of atoms within a molecule.
Given:
Mass of Ca = 2.514g
Mass of O = 1.004g
Molar mass of Ca = 40.078g/mol
Molar mass of O = 15.999g/mol
To find:
Empirical formula = ?
Formula:
Empirical formula = Moles of Ca : Moles of O
Calculations:
No. of moles of Ca = 2.514 / 40.078
n of Ca = 0.06273 moles
No. of moles of O = 1.004 / 15.999
n of O = 0.06275 moles
Divide both by the lowest no. of moles
n of Ca : n of O = 1 : 1
Empirical formula = [tex]CaO[/tex]
Result:
[tex]CaO[/tex] is the empirical formula of the compound.
The complete question is:
In an experiment, a 2.514 g sample of calcium was heated in a pure stream of oxygen, and was found to increase in mass by 1.004 g. Calculate the empirical formula for the given compound.
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What is the mass in grams of 0.05 moles of gold?
The mass of 0.05 mole of gold is 9.85 grams.
Equation :The following equation relates the mass and molar mass of a substance to its mole:
Mole = mass /molar mass
We can determine the mass of gold using the formula above. This is attainable as follows:
0.05 mole = gold in one mole.
Molar mass of gold = 196.97 g/mol
Mole = mass / molar mass
0.05 = mass / 196.97
Mass = 0.05 × 196.97
Mass of gold = 9.85 g
Hence, the mass of the gold is 9.85 g.
Definition of mass :A physical body's mass is its total amount of matter. Additionally, it is a gauge of the body's inertia, or resistance to acceleration in the face of a net force The gravitational pull an object has on other bodies is also influenced by its mass. The kilogram is the fundamental unit of mass in the SI.
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pOH of a solution that contains 3.5 g of sulfuric acid dissolved in 1.75 liters of
solution.
The pOH of a solution that contains the given volume and mass is 1.690.
Equation :To calculate pOH of sulfuric acid we must know the moles and concentration.
So, to calculate moles using formula,
moles = mass / molecular mass
Given,
mass = 3.5 g
volume = 1.75 lit
So,
moles of sulfuric acid = mass / molecular mass
Putting values,
moles of sulfuric acid = 3.5g / 98.079 g/mol
moles of sulfuric acid = 0.0357mol
Now to know the concentration we are using the formula,
Concentration of sulfuric acid = moles / volume
Putting values,
Concentration of sulfuric acid = 0.0357mol / 1.75l
Concentration of sulfuric acid = 0.0204 mol/l
pOH + pH = 14
pOH = -log(0.0204)
pOH = 1.690
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15 POINTS!!!!! NEED ASAP!!!
1. Describe the differences between scale and proportion in relation to a scientific model.
2. In your own words, describe why scientific models are useful, even though much of the time their scale or proportions are not accurate when compared to the real thing.
3. Describe how atoms can be mostly empty space, even though they are the building blocks of everything in the universe. (i.e. how can your desk be made of atoms which are mostly empty space if it is solid?)
4. We learned about three different types of graphs. Describe each type of graph briefly, including what data goes where, then input a picture example of each type of graph.
Line Graph
Bar Graph
Circle Graph
Scale is the 'size of one object and proportion refers to the size of the parts of an object, scientific models help you visualize, atoms do not contain any empty space, they are filled completely with spread-out electrons, circle graph shows percentages and line graphs show data over time'
1. Scale and proportion are both design elements that have to do with size scale is the size of one object in relation to the other objects in a design or artwork and proportion refers to the size of the parts of an object in relationship to other parts of the same object.
2. Scientific models are useful models can help you visualize, or picture in your mind, something that is difficult to see or understand and models can help scientists communicate their ideas and also understand processes and make predictions that's why time their scale or proportions are not accurate when compared to the real thing.
3. Atoms do not contain any empty space and they are filled completely with spread-out electrons, making the shrinking of atoms impossible that's why it is said that the building blocks of everything in the universe.
4.Circle graph shows percentages and line graphs show data over time and bar graphs are for comparing data collected by counting and line graph is graph that uses lines to connect individual data point this three are graph are important
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Select the statement that accurately summarizes how heat energy spreads throughout a substance. A) As a particle is heated, it absorbs energy. As it bumps into a nearby particle, it transfers all of the heat energy to the second particle. This leaves the first particle with no energy, so its movement slows.B) Heated particles absorb the energy and begin to move more and faster. As they move around, they bump into nearby particles and transfer some of their energy to those particles. This continues until all of the particles in the substance have the same amount of energy. C)Particles are heated and move around. They transfer thermal energy to the other particles as they bump into each other. This continues until all the particles lose all of their energy and motion stops. D)When particles are heated, they become sluggish and slow down. They transfer energy to nearby particles causing them to slow down, too.
The statement " Heated particles absorb the energy and begin to move more and faster. As they move around, they bump into nearby particles and transfer some of their energy to those particles. This continues until all of the particles in the substance have the same amount of energy " summarises the heat transfer throughout the substance.
Heat is the thermal energy that is transferred from a system to its environment or from one thing to another. The object with the higher temperature is transferring energy to the thing with the lower temperature.In order to move thermal energy from one thing or thing to another, or from a system to its surroundings, there are three possible methods:ConductionConvectionRadiation The energy of the particles increases when energy is transmitted to an object. This indicates that the particles have higher kinetic energy, which causes them to move and vibrate more fastly. As the particles move more fastly, they "bump" into nearby particles and transfer some of their energy with them. In this manner, the substance at the other end receives the energy.This is how energy is transferred in a substance.
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Question 4.1Write the equilibrium constant expression,Kc , for the following reaction:
(If either the numerator or denominator is 1, please enter 1.)
See attachment for question
equilibrium constant expression, Kc ,for the following reaction: Kc for the Reaction is: 1 / [Fe⁺³]² [S⁻²]³
What is Equilibrium Constant of a Reaction ?The equilibrium constant is a type of chemical reaction (usually denoted as the symbol K) use to give the relationship between the products and reactants when a chemical reaction reaches to it's equilibrium. Such as the equilibrium constant of concentration (marked as Kc) of a chemical reaction at equilibrium is defined as the ratio of the concentration of products to that of the concentration of the reactants.It is important for us to note that there are various different types of equilibrium constants which provides relationship between products and the reactants of equilibrium reactions in variety of units.For a chemical reaction, the equilibrium constant is defined as the ratio between the part of reactant and that of product which is generally used in order to determine the chemical behavior.Given Reaction and it's equilibrium constant is:
2Fe⁺³(aq) + 3S⁻²(aq) ⇄ Fe₂S₃ (s)
Now Equilibrium Constant of the reaction is: [Fe₂S₃] / [Fe⁺³]² [S⁻²]³
We know that concentration of solid compound is 1.
Hence, Kc for the Reaction is: 1 / [Fe⁺³]² [S⁻²]³
Thus, from the above conclusion we can say that, Kc for the Reaction is: 1 / [Fe⁺³]² [S⁻²]³ .
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A baseball is pitched to the batter,
What is the motion of the reference
For a radioactive isotope with a half life of 2 seconds, how much of a 50 Ci sample of the isotope will
remain after 6 seconds?
0.125
a radioactive isotope with a half life of 2 seconds, how much of a 50 Ci sample of the isotope will remain after 6 seconds
as per the statement, we have got
The half life period is 2 second
6 second =2 sec / 6 sec = 3 half life periods.
The fraction of the material would remain after 6 second is
[tex]\frac{1}{2^3}[/tex] = 1 / 8 = 0.125
half-life is the amt of time it took for half of the atoms in a gien sample of radioactive substance to decay. radiocarbon dating or carbon-14 is a method for dating ancient materials that were once living.
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