The speed of the sound would increase as the wave speed increase.
What is the effect of the wavelength on the speed of sound?
We have to know that the speed of the sound is dependent on the wavelength and the relationship is a direct relationship if the frequency of the sound has been kept as a constant.
We can now be able to write that;
v = λf
v = wave speed
f = frequency
λ = wavelength
Now we can see that is we increase the wavelength of the sound then the wave speed of the sound would also increase .
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Select all the measurements that could represent volume.
0 10 ft³
85.5 km²
300 cm²
Due to the fact that this is a generally used (unit)3, such as cubic centimeters, cubic inches, cubic feet, cubic meters, etc., volume is computed for three-dimensional objects and is therefore represented in cubic units or another format of writing cubic unit.
What quantities could be used to indicate volume? Due to the fact that this is a generally used (unit)3, such as cubic centimeters, cubic inches, cubic feet, cubic meters, etc., volume is computed for three-dimensional objects and is therefore represented in cubic units or another format of writing cubic unit.If the length or radius is expressed in cm.It is typically measured in terms of the liter (L), or 1.057 qt in conventional measurements, or the milliliter (mL), or 1/1000 of a liter, or roughly 0.0338 of an ounce.In and out of the laboratory, it is frequently measured using cylinders, flasks, pipettes, or syringes.As an illustration of volume, a learner could use a graduated cylinder to calculate the volume of a chemical solution in milliliters.You could purchase a quart of milk.To learn more about volume refer
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Scientific notation 7.77 x 10^4 =
Answer:
7.77×10^4=77,700
Explanation:
10^4 is 10,000, since there are 4 zeros in 10,000, move the decimal in 7.77 4 spaces to the right.
1: 77.7
2: 777.
3: 7,770.
4 77,700.
Side note: This trick ONLY works with +/-10^x value. If the value is positive the decimal moves to the right, and if the value is negative the decimal moves to the left.
Example: 7.77×(-10)^3=.00777
(-10)×(-10)×(-10)=(-10)^3= -1000
1: .777
2: .0777
3: .00777
In the formation of carbon dioxide from carbon monoxide and oxygen, how many grams of carbon dioxide are produced by the reaction of 8 grams of oxygen with an excess of carbon monoxide?
The amount of carbon dioxide produced by the reaction of 8 grams of oxygen with an excess of carbon monoxide is 16 grams.
How many grams of carbon dioxide are produced by the reaction of 8 grams of oxygen with an excess of carbon monoxide?In the reaction of 8 grams of oxygen with an excess of carbon monoxide, 16 grams of carbon dioxide are produced.This is an example of a combustion reaction, whereby oxygen and a fuel, in this case carbon monoxide, combine to produce energy in the form of heat and light, as well as the product carbon dioxide.The reaction can be represented by the equation: 2CO + O2 → 2CO2.This equation indicates that for every 2 moles of carbon monoxide and 1 mole of oxygen, 2 moles of carbon dioxide are produced.Since 8 grams of oxygen is equal to 1 mole, 16 grams of carbon dioxide are produced.The excess of carbon monoxide ensures that all of the oxygen is used up in the reaction, resulting in the maximum amount of carbon dioxide being produced.To learn more about combustion reaction refer to:
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Gold (atomic mass=197) is plated from a solution clauric acid H4UCl4, It deposits on the cathode. Calculate the time to deposit 0.50g of gold passing a current of 0.10 (F=96485C)
Gold (atomic mass=197) is plated from a solution clauric acid H4UCl4, It deposits on the cathode. The time to deposit 0.50g of gold passing a current of 0.10 is 2.4 hour.
What is current ?The movement of electrons through a wire is referred to as electric current. The number of charges that move through the wire per second is measured in amperes (amps).
One mole of gold require 3 mole electron
Mass of gold deposited = 0.50g
Molar mass of gold = 197g
No of mole of gold = 0.50g/197g
= 0.0025
No of electron required = 3 × 0.0025
= 0.0076
1mole of electron having the charge of 96485C
Therefore, Columns for 0.0076 mole of electron = 940.43C
0.1 A current means 0.1 Columbs per second
Therefore, time to deposit 0.50g of gold = 940.44/0.1
= 9404.4second
= 2.4 hour
Thus, the time to deposit 0.50g of gold passing a current of 0.10 is 2.4 hour.
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How many O atoms are in 0.150 mol of aspirin, C9H8O4
Answer: 3.61 × 10²³
Explanation:
The dazzling colors produced by fireworks result from excited gaseous atoms or molecules emitting light. The normal electron configuration of an atom is known as the
"ground state." In ground state all electrons are in the lowest energy levels available. When atoms or ions are heated, some electrons may absorb enough energy to
allow them to "jump" to higher energy levels. The atom or ion is then said to be in the "excited state." The electrons cannot remain in this excited state for long and will
emit energy in the form of light when they return to ground state. It is this light we see when an atom is heated in a flame. The frequency or color of light emitted
depends on the energy difference between the excited state and the ground state.
Chose the correct ground state configuration for Sr
1s22s22p63s23p64s23d104p65s2
1s22s22p63s23p64s23d104p8
1s22s22p63s23p64s23d104p75s1
1s22s22p63s23p64s24p64d105s2
Answer:
The ground state electron configuration of Sr (Strontium) is 1s22s22p63s23p64s23d104p65s2. This means that the electrons in the Sr atom occupy the lowest possible energy levels available to them. The electron configuration is written as a series of numbers and letters that indicate the number of electrons in each orbital. In this case, the first electron goes in the 1s orbital, the next two electrons go in the 2s orbital, the next six electrons go in the 2p orbital, the next six electrons go in the 3s orbital, the next six electrons go in the 3p orbital, the next ten electrons go in the 4s orbital, and the final two electrons go in the 5s orbital. When Sr is heated and its electrons are excited, they absorb enough energy to jump to higher energy levels. When these electrons then return to the ground state, they emit light of a specific frequency or color.
Determine the number of atoms in 29.0
grams of sodium, Na. (The mass of one
mole of sodium is 22.99 g.)
The number of atoms in 29.0grams of sodium, Na is 7.58 × 10²³ atoms.
How to calculate number of atoms?The number of atoms of a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number; 6.02 × 10²³.
no of atoms = no of moles × 6.02 × 10²³
According to this question, there are 29.0 grams of sodium (Na). The number of moles can be calculated as follows:
moles = 29.0g ÷ 22.99g/mol = 1.26mol
No of atoms = 1.26 mol × 6.02 × 10²³
no of atoms = 7.58 × 10²³ atoms
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HELPPP PLSS ILL GIVE U BRAINLIEST
Mountains can evolve in a variety of ways over time. They are susceptible to erosion from rain and wind, as well as landslides caused by flooding. Volcanic activity causes some mountains to change. They may also change as a result of earthquakes and tectonic plate movement.
What is volcanic activity ?A volcanic eruption occurs when lava and gas are expelled from a volcano, sometimes violently. A 'glowing avalanche,' which occurs when freshly erupted magma flows down the sides of a volcano, is the most dangerous type of eruption.
The heat from the mantle plume melts and thins the crust, resulting in surface volcanic activity.
Thus, In figure 3 there are two images one is millions of years ago and another is present day image. In both the images mountains are different because of erosion from rain and wind, as well as landslides caused by flooding.
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Which type of molecule is
shown below?
O A. Alkyne
• B. Alkane
O C. Aromatic
O D. Alkene
When a 0.57-g sample of olive oil is burned in a calorimeter, the heat released increases the temperature of 390 g of water from 22.7∘C to 37.5 ∘C .
The energy value of olive oil is 42.37 kJ/g. The enthalpy from the olive oil is 52.198 kJ/mol.
The question isn't complete. A similar question is in the attachment. A calorimeter is a tool that use to measure heat energy according to the equation
Q = m × c × ΔT
m = mass of water in calorimeter = 390 gramsc = specific heat capacity (J/g °C)The heat energy that release
Q = m × c × ΔT
Q = 390 × 4.184 × 14.8
Q = 24,150.048 J
Q = (24,150.048 ÷ 1,000) kJ
Q = 24.15 kJ
The energy value is the ratio between the heat energy and the mass. For this problem
Mass of olive oil = 0.57 gramsQ = 24.15 kJEnergy values = Q ÷ mass = 24.15 ÷ 0.57 = 42.37 kJ/gThe formula to calculate the enthalpy ΔH = Q ÷ n
n = number of moles Q = heat energy = 24.15 kJΔH = enthalpyOlive oil C₈₈H₁₆O₁₀Learn more about heat energy here: brainly.com/question/28842664
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Atoms disappear during a chemical change true or false
Answer:
False
Explanation:
In a chemical reaction, only the atoms present in the reactants can end up in the products.
No new atoms are created, and no atoms are destroyed.
In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Which of the following is the equation for impulse?
impulse =p
impulse =mv
impulse =FΔt
impulse =ma
The correct equation for impulse is FΔt. The third option.
What is impulse?In mechanics, the impulse is the amount of force applied to an object for a certain amount of time leading to a change in the momentum of the object.
The impulse is mathematically expressed as:
Impulse = FΔt
Where F is the amount of force applied in Newton and Δt is the changes in the time spent applying the force. In other words, impulse is the product of force in Newtons and time in seconds.
Thus:
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I need help answering these
How many significant figures are in each of the following numbers?
a. 225.0
c. 0.0003210
b. 1000.0
d. 0.0067
e. 1,000,000.
f. 2.00001
Round off each of the following numbers to three significant figures.
a. 15.9994
c. 0.6654
e. 87,550
b. 1.0080
d. 4885
f. 0.027225
3. Perform the indicated arithmetic operations, and round the results to the appropriate number of significant figures or decimal places.
a. 77.981 x 2.33
b. 4 x 0.0665 =
c. 17.344.900 + 23.1
d. 9.80 4.762 =
e. 3.9 X 6.05 X 420 =
f. 14.1/5
g. 1001 + 16.23 =
h. 424.5+ 2.8461 =
i. 9.9-9.54
j. 7.3778 0.000265 =
k. (24.358)(6.4)
1. (48.6)(0.6959)
Significant figures are the meaningful digits in a number that convey its precision. In scientific and technical calculations, the number of significant figures is used to express the level of accuracy of a measurement or calculation.
What is the Number of significant figures?a. 225.0 - 4 significant figures
c. 0.0003210 - 5 significant figures
b. 1000.0 - 4 significant figures
d. 0.0067 - 3 significant figures
e. 1,000,000. - 7 significant figures
f. 2.00001 - 5 significant figures
Rounding to three significant figures:
a. 15.9994 -> 16.0
c. 0.6654 -> 0.67
e. 87,550 -> 87,000
b. 1.0080 -> 1.01
d. 4885 -> 4,900
f. 0.027225 -> 0.0272
Arithmetic operations rounded to the appropriate number of significant figures or decimal places:
a. 77.981 x 2.33 = 182.0 (3 significant figures)
b. 4 x 0.0665 = 0.266 (3 significant figures)
c. 17.344.900 + 23.1 = 17.345 million (1 decimal place)
d. 9.80 - 4.762 = 5.038 (3 significant figures)
e. 3.9 x 6.05 x 420 = 9,658 (3 significant figures)
f. 14.1 / 5 = 2.82 (3 significant figures)
g. 1001 + 16.23 = 1017 (3 significant figures)
h. 424.5 + 2.8461 = 427.3 (3 significant figures)
i. 9.9 - 9.54 = 0.36 (2 significant figures)
j. 7.3778 - 0.000265 = 7.378 (4 significant figures)
k. (24.358)(6.4) = 155 (2 significant figures)
l. (48.6)(0.6959) = 33.7 (2 significant figures)
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H₂ (g) + CO₂ (g) = H₂O(g) + CO (g)
K = 0.106 at 700 K. If a mixture of
gases that initially contains 0.0150 M
H₂ and 0.0150 M CO2 is allowed to
equilibrate at 700 K, what are the final
concentrations of all substances
present?
CO2(g) + H2(g) CO(g) + H2O(g) Initial no. of moles: 0.45 0.45 0 0 No. of moles
What are the final concentrations of all substances present?A chemical reaction is said to be in a state of chemical equilibrium when both the reactants and the products have reached a concentration that does not change with time. The rate of forward reaction is the same as the rate of backward reaction in this state.
The ratio of the concentrations of the substances on the right to those on the left equals a constant appropriate for that specific reaction in any equilibrium reaction. It is worth noting that the ratio is always written with the products preceding the reactants.
In chemistry, however, solution concentration is often expressed as a "molarity" (a molar concentration), which is defined as the number of moles of solute divided by the number of litres.
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Consider the endothermic reaction N2(g) + 3H2(g) ⇌ 2NH3(g). How does the following action affect an equilibrium reaction by driving the reaction? Increasing the volume of the system, while decreasing pressure
is this a forward or reverse reaction
For the given reaction, increasing the volume of the reaction system will shift the equilibrium to forward reaction. Decreasing the pressure will shift the equilibrium to the reverse direction.
What is chemical equilibrium ?The state of a reaction at which, the back ward and forward reaction takes place in equal rates is called equilibrium state. According to Le -Chatlier's principal, if any disorder imbalance the system, the system will balance it and shift to a new equilibrium state.
When the volume of reactants is increased, the reaction changes to the forward direction in which the increased volume is decreased. Hence, as the volume increases, forward reaction takes place.
When the pressure is decreased, the reaction will shift to the direction in which the number of moles of gas is increasing to increase the pressure. Here, the reactant side haves the 4 moles of gases and product side have 2 moles of gas.
Hence, decrease in temperature make a shift to the reverse reaction.
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How many faraday is needed for 127g of Cupper in Chlorine cuprous?
Answer:
One Faraday is the charge of one mole of electrons, which is approximately 96,500 coulombs. To calculate the number of Faradays needed to reduce 127 grams of copper to the cuprous form in chlorine, we need to know the balanced chemical equation for the reaction and the equivalent weight of copper.
Explanation:
Insulators ? thermal energy transfer.
Insulation is the process of constructing a barrier between hot and cold objects that prevents heat from transferring between them by either reflecting thermal radiation or reducing conduction and convection.
What reduces thermal energy transfer?
What is an insulator?The prevention of heat transfer between surfaces that are in thermal contact or within a radiative influence zone is known as thermal insulation. In addition to using the right item forms and materials, specially engineered technologies or processes can also be used to provide thermal insulation.
Thermal insulation prevents heat from moving from one substance to another when they are in thermal contact.
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why is baffle used in a Sparger
When baffles are present, the liquid becomes more turbulent and power is used more effectively. A sparger is a tool used to introduce air into the fermentor vessel below the liquid level.
What is the purpose of a sparger?In order to ensure that bubbles are distributed equally throughout the flotation cell or leach tank, industry tools called spargers are used to inject gas into these tanks. Isostatic pressing is used to create sparger elements from sintered metal powder. The material is subsequently compressed in a vessel with a solid steel core that is under pressure and filled with 900°C liquid.
An essential component of the vessel's mixing mechanism, a baffle encourages greater fluid flow for maximum effectiveness. By transforming the swirling into the correct flow pattern.
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NH3
Express your answer using four significant figures. What mass%N?
The percent by mass of the nitrogen is 82.4%.
What is the percent by mass?We have to note that the percent by mass can be obtained when we know the molar mass of the compound and that is the first thing that we would need to find in the problem that we have in the question that have been asked.
The molar mass of the compound is; 14 + 3(1) = 17 g/mol
The percent by mass = Mass of N/ molar mass * 100/1
= 14/17 * 100/1
= 82.4%
The nitrogen would have a percent by mass in the compound of about 82.4%
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Answer the question OR ELSE... you will eat a French Fry with a beatle in it.
N2 + 3H2 --> 2NH3
What volume(L) of NH3 at STP is produced if 25.0g of N2 is reacted with an excess of H2 ?
Question 1 options:
40.0 L
25.0 L
45.0 L
0.89 L
Answer:
40.0L
Explanation:
How many milliliters of 18.2 MH2SO4 are needed to prepare 600.0 mL of 0.10 MH₂SO4?
3.26 mL of a solution of 18.4 M H2 SO4 would be required. Therefore, 3.26 ml of that concentrated stock solution is what we need, and it seems like that is the right answer.
What does "concentrated" in liquid terms mean?Water has been removed from a concentrated liquid to increase its strength. Use honey or concentrated apple or pears juice sparingly to sweeten food. Synonyms: rich, concentrated, undiluted, and reduced More definitions of concentrated.
What do concentration and an example mean?to guide or draw to a common core or goal: focus. one's attention, concentrate. The lenses concentrate light, which means to collect into one entity, mass, or force. Only a select few skilled hands had all the power.
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The rate of reaction is affected by all except........
The rate of a reaction is affected by several factors such as concentration, temperature, etc. except the magnitude of equilibrium constant. It is the Chemical kinetics that deals with the study of rate of reactions.
What is rate of a reaction?The rate of decrease in the amount of the reactants or the rate of increase in the amount of products is generally known as the rate of a reaction. It is usually expressed in the unit mol L⁻¹ s⁻¹.
The rate of a reaction is influenced by many factors like reactant concentration, temperature, presence of catalyst, intensity of radiations, etc.
In general, the increase in the concentration of the reactant, increase in the temperature of the system and the presence of a catalysts increases the rate of the reaction.
There is no relationship between the equilibrium constant and the rate of the reaction. The rate equation is given as:
Rate = k [ Reactant]ⁿ
Here k is the rate constant not the equilibrium constant.
The extent to which the reactants are changed into the products is given by the magnitude of equilibrium constant. It does not affect the rate of a reaction.
Thus the rate of a reaction is affected by all except magnitude of equilibrium constant.
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1.25 moles of gas is held at a temperature of -4.5°C. What is the volume of the gas if the pressure is 1.20 atm?
30 points
Determine the number of moles in 2.07 × 10²³ formula units of CaCl₂.
The number of moles in 2.07 × 10²³ formula units of CaCl₂ is 0.34 moles.
What do you mean by mole ?The term mole is defined as the amount of substance of a system which contains as many elementary entities.
One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.
The mole concept can be used to convert between mass and number of particles.
1 mole of any molecule = 6.023 × 10²³ molecules
1 mole of CaCl2 = 6.023 × 10²³ molecules
Therefore,
2.07 × 10²³ molecules of CaCl2 1 mole / 6.023 × 10²³
= 0.34 moles
Thus, the number of moles in 2.07 × 10²³ formula units of CaCl₂ is 0.34 moles.
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Upon decomposition, one sample of magnesium fluoride produced 1.66 kg
of magnesium and 2.56 kg
of fluorine. A second sample produced 1.34 kg
of magnesium. How much fluorine (in grams) did the second sample produce?
The mass of Fluorine in grams in the second sample is 2066 g. The concept law of definite proportions is used here to obtain the mass of Fluorine in the second sample.
What is law of definite proportions?This law was stated by a French chemist, Louis Proust. It states that 'a chemical compound always contains the same elements combined together in the same proportion by mass'.
The mass of Mg in sample 1 is 1.66 kg and that of F is 2.56 kg. The mass of Mg in sample 2 is 1.34 kg and we have to find out the mass of F in second sample.
The mass of Fluorine in sample 2 can be obtained by using the mass ratio of the elements in sample 1.
In sample 1:
Mass of magnesium ÷ Mass of Fluorine = 1.66 kg ÷ 2.56 kg
In sample 2:
By using dimensional analysis,
Mass of Fluorine = 2.56 kg Fluorine ÷ 1.66 kg Magnesium × 1.34 kg Magnesium
Therefore the mass of Fluorine = 2.066 kg
The mass in kilogram can be converted into grams as:
Mass of Fluorine = 2.066 kg × 1000 g ÷ 1 kg = 2066 g
Thus the mass of Fluorine in the second sample is 2066 g.
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Consider the reaction.
MnS(s)+2HCl(aq)⟶MnCl2(aq)+H2S(g)
If the small amount of MnS is combined with the large amount of HCl, what is the mass of the products? The mass of any excess reactants will also be included in this total.
Mass of Empty flask - 400g
Mass Empty beaker- 250g
Mass of small amount flask- 404.35g
Mass of large amount flask - 408.70g
Mass of small amount beaker- 300g
Mass of large amount beaker -350
Mass of Small amount flask and large amount beaker = 504.35g
Mass of Large amount flask and small amount beaker = 458.70g
If the small amount of MnS is combined with the large amount of HCl, The mass of any excess reactants will also be included in this total is the mass of the beaker with the small amount of MnS(s) and HCl(aq) after reaction is 504.35g.
What is balance chemical equation ?A balanced chemical equation is one that has the same number of atoms of each type in the reaction on both the reactant and product sides. In a balanced chemical equation, both the mass and the change are equal.
The balance chemical equation is as follows:
MnS(s) + 2HCl(aq) ⟶ MnCl₂(aq) + H₂S(g)
Thus, The mass of any excess reactants will also be included in this total the mass of the beaker with the small amount of MnS(s) and HCl(aq) after reaction is 504.35g.
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Suppose a different fatty acid molecule were used, with a molecular volume of 4.48 x 10-22 mL/molecule, and a molar mass of 235 g/mol. Use these data and the expected value for Avogadro's number to calculate its density (g/mL) by dimensional analysis. Hint: try starting with 235 g over 1 mole.
9. Using the van der Waals equation, calculate the pressure exerted by 15.0 mol of carbon dioxide confined to a 3.00 L vessel at 56.0 C. Note: Values for a and b in the van der Waal equation: a = 3.59 L2.atm/mol, and b = 0.0427 L/mol.
Using the van der Waal equation, the pressure exerted by 15.0 mol of carbon dioxide confined to a 3.00 L vessel at 56.0 C is 81.95 atm.
What is the van der Waals equation?The van der Waals equation is given below as follows:
(P + a * n²/V²) (V - nb) = nRT
where:
P is pressure = ?
a = 3.59 L².atm/mol
b = 0.0427 L/mol.
V is volume = 3.00 L
n is the number of moles = 15.00 moles
R is molar gas constant = 0.0821 Latm/mol/K
T is the temperature in kelvin = (273 + 56) or 329 K
Substituting the values:
(P + 3.59 * 15²/3²) (3 - 15 * 0.0427) = 15 * 0.0821 * 329
(P + 89.75) = 171.7
P = 81.95 atm
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What is the volume in liters of 3.17 kg of ethylene glycol?
The volume in liters of 3.14 kg of ethylene glycol is 2.8288 L
What is Volume?A measurement of three-dimensional space is volume. It is frequently quantified numerically by various imperial or US customary units, SI-derived units, or both.
To find the volume:
Ethylene glycol density is: 1.11 g/cm³
m= 3.14 kg = 3140 g
v= ? L
v= m/d
= 3140g/1.11 g/cm³
=2828.8 cm³
= 2.8288 L
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Total anions =
Total cations =
The total number of cation is 1 and the total number of anion is 1.
What is cation and anion ?The positively charged particles are called as cation and the negatively charged particles are called as anions.
The number of atoms present in unit cell at corner are 4 red ( B cation ) 4 Blue (A cations)
Total number of cations at the corner = 8
1 atom at corner have 1/8th of its portion
8 atom have 1/8th × 8 atom = 1 atom
Number of cation = 1
Atoms at the edge contributes ¼ th portion
There are 4 anions at edges
Contribution from 4 anions
= 1 / 4 × 4
= 1
Total anions = 1
Total cations = 1
Thus, the total number of cation is 1 and the total number of anion is 1.
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