Calculate the percent composition of Carbon in CgH18

The composition of the mixture by volume 62.1% He and 37.9% Ar.

PV = nRT

n = mass / mw

substitute and rearrange...

PV = (mass / mw) RT

mw = (mass / V) RT/P

and since density = mass / V

mw = (0.660g /L) x (0.08206 Latm/moleK) x (298K) / (755mmHg x 1atm/760mmHg)

mw = 17.61 g/mole

mole fraction He x molar mass He + mole fraction Ar x molar mass Ar = 17.61

and if we let χHe = mole fraction He.. then (1-χHe) = mole fraction Ar.. ie.

χHe x 4.003 + (1-χHe) x 39.95 = 17.61

-35.95 χHe = - 22.34

χHe = 0.621

χAr = 1-0.621 = 0.379

now.. what about volume well... if both gases are ideal, then PV= nRT ---> V/n = RT/P.. so at the constant T and P.. V/n = a constant.. ie.. V1/n1 = V2/n2.. ie.. V1/V2 = n1/n2..meaning this...

"volume ratio = mole ratio"

so. VHe / VAr = m0les H2 / m0les Ar.

and since mole fraction He = moles He / moles total and mole fraction Ar = moles Ar / moles total...

therefore..

mole fraction He / mole fraction Ar = [moles He / (moles total)] / [ moles Ar / (moles total)] = nHe / nAr

VHe / VAr = χHe / χAr = 0.621 / 0.379...

or if you prefer...

62.1% He and 37.9% Ar

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Answer:

A.  Sound travels slower in air because of the large distance between air particles

Explanation:

Sound is a mechanical wave that requires a medium for its propagation. Without a medium, sound cannot go through easily or readily. This implies that sound cannot be propagated through a vacuum.

20.7 kJ energy is required to raise the temperature of 2kg of iron from 20 c to 23 c.

Specific heat capacity refers to the amount of heat required to raise the temperature of a substance. Specific heat capacity is denoted by c.

The formula is Q = mcΔT

Given:

Solution:

Put the values in the formula given below

Q = mcΔT

Q = (2.00 kg) (449 J/ kg°C) ( 23°C)

Q = 20654 J or Q = 20.7 KJ

Approximately 20.7 kJ heat is required to raise the temperature of 2kg of iron from 20°C to 23°C.

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According to Charle's law, the volume of the given mass of a gas is directly proportional to its absolute temperature provided that the pressure is constant. Mathemically;

where;

V1 and V2 are the initial and final volume of the gas

T1 and T2 are the initial and final temperatures of the gas (in Kelvin)

Given the following parameters:

Substitute the given parameters into the formula;

Therefore the volume of the gas at 20°C is approximately 97.67cm³

In the given scenario, a piston-cylinder system receives 51 kJ of heat and loses 12 kJ. The system produces work, and To calculate work we can use W = Q - ΔU formula

The first law of thermodynamics states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system. Mathematically, this can be represented as:

ΔU = Q - W

Where ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system.

In this case, the system receives 51 kJ of heat (Q = 51 kJ) and loses 12 kJ (Q = -12 kJ). We need to calculate the work done by the system (W).

Using the first law of thermodynamics equation, we can rearrange it to solve for W:

W = Q - ΔU

Since the change in internal energy (ΔU) is not given, we cannot directly calculate the work done. Additional information about the change in internal energy or any other relevant parameters would be required to determine the amount of work produced by the system.

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the energy emitted by photon was 0.300564×10-18 J

what is photon?

The term photon, which means "light" in Ancient Greek, refers to a basic particle that is a quantum of the electromagnetic field, which includes electromagnetic radiation like light and radio waves. It also serves as the force carrier for the electromagnetic force. Considering that photons have no mass, they always travel at the speed of light in a vacuum, which is 299792458 m/s (or 186,282 mi/s).

formula was

ΔE=R(1n2f−1n2i)

R=the Rydberg constant, 2.178×10-18 J

For a transition from n=3 to n=2, we get

ΔE=2.178×10-18 J(1/22−1/32)

=2.178×10-18 J(1/4−1/9)

=2.178×10-18 J× 9 – 4/9×4

=2.178×10-18 J× 5/36

=0.300564×10-18 J

hence the energy emitted by the photon was 0.00564x10-18J

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Answer:

5 grams of iron react with 5 grams of oxygen to produce iron 3 oxide.

The actual yield of the reaction is--- 5 grams.

What is the percent yield?

Explanation:

The balanced chemical equation of the reaction is:

\(4Fe(s)+3O_{2} (g)->2Fe_{2} O_3(s)\)

1)Identify the limiting reagent.

2)Using the limiting reagent calculate the amount of theoretical yield formed.

Identification of limiting reagent:

4 mol of Fe reacts with 3mol. of O2

that is:

4mol(55.84g/mol) of Fe reacts with ---- 3mol (32.0g/mol)

=223.36g of Fe reacts with ---- 96g. of O2

then,

5g of Fe requires how many grams of O2?

\(=>5g. of Fe * \frac{96g O2}{223.36g Fe} \\=2.14g. of O_{2} .\\\)

But provided 5g of O2.

So, O2 is present more than required.

Hence, O2 is the excess reagent and the limiting reagent is Fe.

The amount of product formed depends only on the amount of Fe only.

Theoretical yield:

From the balanced chemical equation:

4mol. of Fe forms ----- 2mol. of Fe2O3.

that is

223.36g of Fe forms --- 2(159.68g)of Fe2O3.

=>223.36g of Fe forms --- 319.36g of Fe2O3.

then,

5g of Fe forms ----? grams of Fe2O3

\(=>5g of Fe * \frac{319.36g Fe2O3}{223.36g of Fe} \\=7.14g. of Fe2O3\\\)

\(%Error =\frac{actual yield}{theoretical yield} * 100\\\\ %error=\frac{5g}{7.14g} * 100\\ %error =70.0\)% error=actual yield/ theoretical yield  x 100

%error=5g./7.14g  x100

=>%error=70.0

Hence, the answer is 70.0%.

After 24.3 days, 3 half-lives of iodine-131 have passed. Therefore, the amount remaining can be found by multiplying the original amount of 75.0 mg by \((1/2)^3\), which equals 9.38 mg. Option B is correct.

The decay of radioactive isotopes can be modeled using the concept of half-life. Half-life is the amount of time it takes for half of the original sample of the isotope to decay.

In this problem, we are given that the half-life of iodine-131 is 8.1 days. This means that after 8.1 days, half of the original sample will remain, and after another 8.1 days, half of that remaining sample will decay, and so on.

We can use this information to find how much of a 75.0 mg sample of iodine-131 will remain after 24.3 days.

First, we need to determine the number of half-lives that have elapsed. To do this, we divide the elapsed time by the half-life:

24.3 days / 8.1 days per half-life = 3 half-lives

So, after 3 half-lives, the amount of iodine-131 remaining can be found by multiplying the original amount (75.0 mg) by \((1/2)^3\) (since 3 half-lives have passed):

Amount remaining = 75.0 mg * \((1/2)^3\)

= 75.0 mg * 0.125

= 9.38 mg

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Complete question:

The half-life of iodine-131 is 8.1 days. how much of a 75.0 mg sample will remain after 24.3 days? group of answer choices

A - 75.0 mg

B - 9.38 mg

C - 4.68 mg

D - 18.8 mg

E - 37.5 mg

Answer:

it will decrease because there will not be food for all of them and there is very little space for them now so if there is more they will start to fight

Explanation:

there is very little habitat left for panda bears so if there population increases the food and space with be filed

Hello! jamilialves888

I'm glad you asked my name is ✰Tobie✰

And I will help you understand why the population of ⚝pandas ⚝

is decreasing .

-Your answer :βy Tobie

≛So why are pandas going extinct?

One of the main cause is due to the destruction of their own habitat

Since china is a country that is constantly growing their own homes are slowly   being destroyed Since their habitats are becoming destroyed it forces them to live in small unhabitable area .

≛This leads to another problem.....

If they are forced to live in a small area there will be less food...

Since there is a shortage of food that will leave the panda's to slowly starve to death since pandas only eat bamboo they could never be able to live anywhere else....Another reason panda's are going extinct is because they are being hunted for their fur.

ex·tinct

/ikˈstiNG(k)t/

_____________

It means that the species does not exist anymore and

are no longer in existence

Hope this helps!

                                                                                             -Tobie <3

ʕ •ᴥ•ʔ

Answer:

- 0.57138096 M

- 0.571mol

- 0.571 M NaHCO3

- 0.571 mol/NaHCO3

(these are just different ways to identify the units but they all work and mean the same thing)

Explanation:

- molarity is measured by the ratio of the moles of a solute per liters of a solution

- the formula for molarity is: \(M = \frac{mol (s) solute}{L solution}\)__________________________________________________________

- first, you need to convert 250mL to L so, \(250/1000=0.25\)

- when it comes to converting g to mol you can do it in a separate equation but i prefer to do it all in one equation

__________________________________________________________

- so the equation for this specific problem would be set up like this:\(\frac{12.0g}{.25L} x \frac{1mol}{84.007 g} = x\)

__________________________________________________________

- now to actually solve it:

\(\frac{12.0g}{.25L} x \frac{1mol}{84.007 g} = \frac{12.0}{21.00175} = 0.57138096(or)/0.571mol/0.571 M NaHCO3/(0.571 mol/NaHCO3)\)

hope this helps :)

Answer:

A. They both arranged the elements in order of increasing atomic mass.

Explanation:

Hope this helps! :)

The work of Newlands similar to that of Mendeleev on the periodic table was that they both arranged the elements in order of increasing atomic mass.

Hence, Option (A) is correct answer.

Newland's Law of Octaves states that if the chemical elements are arranged in increasing order of atomic mass, every eighth element's properties are similar to that of the first element.  

Mendeleev's Periodic Law states that the chemical and physical properties of elements are a periodic function of their atomic masses.

Now, lets check all options one by one

Option (A): They both arranged the elements in order of increasing atomic mass.

Mendeleev arranged the elements in rows and column of a table in order of their increasing atomic mass. Newland arranged the elements in order of their increasing atomic mass that every eighth element's properties are similar to that of the first element.  

So, it is correct option.

Option (B): They both arranged elements that had similar properties into groups.

Newlands arranged the elements that every eighth element's properties are similar to that of the first element. Mendeleev arranged the elements with similar properties in vertical column (group).

So, it is incorrect option.

Option (C): They both predicted the positions of undiscovered elements on the table.  

Only Mendeleev predicted the position of undiscovered elements that is  Gallium (eka-Aluminium) and Scandium (eka-Boron).

So, it is incorrect option.

Option (D): They both placed the relative atomic mass of each element on the table.

Only Mendeleev placed the relative atomic mass of each element on the table.

So, it is incorrect option.

Thus, we can say that The work of Newlands similar to that of Mendeleev on the periodic table was that they both arranged the elements in order of increasing atomic mass.

Hence, Option (A) is correct answer.

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You can solve this problem using stoichiometry:

The tables is already set for you, so let's solve this using it:

Starting at the 75.0 g, divide it by 44.96:

you are left with 1.668 mol because the g cancel each other out.

Now multiply 1.668 mol with 6.02 × 10²³ atom to be left with

1.0041 mol · atom Sc

1 mol Sc

The mol cancel each other out, so your final rounded answer will be

Answer: 1 × 10²³ atoms Sc

Transparency - the degree to which light can pass through a mineral. Examples: quartz, calcite.

Luster - the appearance or quality of light reflected from the surface of a mineral. Examples: metallic (galena, pyrite), non-metallic (quartz, calcite).

Color - the color of a mineral when viewed in reflected light. Examples: emerald (green), ruby (red).

Luminescence - the ability of a mineral to emit visible light when stimulated by energy. Examples: fluorite, calcite.

Fluorescence - the ability of a mineral to emit visible light when exposed to ultraviolet light. Examples: fluorite, calcite.

Phosphorescence - the ability of a mineral to emit visible light for a period of time after exposure to energy. Examples: willemite, calcite.

Specific Gravity - the ratio of the weight of a mineral to the weight of an equal volume of water. Examples: galena, hematite.

Hardness - the resistance of a mineral to scratching or abrasion. Examples: quartz (hardness of 7), talc (hardness of 1).

Tenacity - the resistance of a mineral to breaking or deformation. Examples: malleable (gold), sectile (gypsum).

Cleavage - the tendency of a mineral to break along planes of weakness. Examples: mica (perfect cleavage), calcite (good cleavage).

Fracture - the way in which a mineral breaks that is not related to planes of weakness. Examples: conchoidal (obsidian), uneven (halite).

Magnetic Property - the ability of a mineral to attract or repel other magnetic materials. Examples: magnetite, pyrrhotite.

Diamagnetic - minerals that are not attracted to a magnetic field. Examples: quartz, calcite.

Paramagnetic - minerals that are weakly attracted to a magnetic field. Examples: garnet, biotite.

Ferromagnetic - minerals that are strongly attracted to a magnetic field. Examples: magnetite, pyrrhotite.

Electrical Property - the ability of a mineral to conduct electricity. Examples: copper, graphite.

Radioactive Property - the ability of a mineral to emit radiation. Examples: uranium, thorium.

Optical Property - the way in which light interacts with a mineral. Examples: double refraction (calcite), isotropic (garnet).

Friction - the resistance of a mineral to sliding along a surface. Examples: talc (low friction), garnet (high friction).

Mineral Aggregation - the way in which mineral crystals are arranged in a rock. Examples: granular (granite), fibrous (asbestos).

Surface Properties - the way in which the surface of a mineral feels or looks. Examples: smooth (quartz), rough (pyrite).

Physical properties of minerals, transparency: It refers to the ability of a mineral to transmit light through it, luster: It is the appearance of the mineral's surface when light reflects off it.

I can define the following physical properties of minerals and provide examples for each:

Transparency: It refers to the ability of a mineral to transmit light through it. Some minerals are completely transparent, while others may be translucent or opaque. Examples of transparent minerals are diamond, quartz, and calcite.

Luster: It is the appearance of the mineral's surface when light reflects off it. Minerals can have a metallic or non-metallic luster. Metallic luster minerals include pyrite and galena, while non-metallic luster minerals include calcite and feldspar.

Color: It is one of the most noticeable physical properties of minerals, but not always a reliable indicator of a mineral's identity. For example, quartz can come in a variety of colors, including clear, white, purple, pink, and yellow.

Luminescence: It is the ability of a mineral to emit light when exposed to certain types of radiation. Some minerals exhibit fluorescence, which is the emission of light when exposed to ultraviolet radiation. Examples of fluorescent minerals are fluorite and scheelite.

Specific Gravity: It is the ratio of the weight of a mineral to the weight of an equal volume of water. This property helps to identify minerals that have similar appearances but different densities. For example, gold has a high specific gravity of 19.3, while pyrite has a specific gravity of 5.

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Answer: As ice melts into water, kinetic energy is being added to the particles. This causes them to be 'excited' and they break the bonds that hold them together as a solid, resulting in a change of state: solid -> liquid.

Explanation:

Answer:

El reactivo en exceso es hidrógeno

97.12g NH₃ son formados

Explanation:

Basados en la reacción:

N₂(g) + 3 H₂(g) → 2 NH₃(g)

El hidrógeno pasa de estado de oxidación 0 a estado de oxidación +1. Al perder un electrón se oxida y es el agente reductor.

El nitrógeno pasa de estado 0 estado -3. Al ganar 3 electrones se reduce y es el agente oxidante.

100g de N₂ son (Peso molecular: 28g/mol):

100g × (1mol / 28g) = 3.57 moles de N₂

Y 25g de H₂ son (Peso molecular: 2g/mol):

25g × (1mol / 2g) = 12.5 moles de H₂

Como 3 moles de hidrógeno reaccionan por mol de nitrógeno, las moles de nitrógeno que se necesitan para hacer reaccionar completamente 12.5 moles de hidrógeno son:

12.5 moles H₂× (1 mol N₂ / 3 moles H₂) = 4.17 moles de nitrógeno.

Como hay 3.57 moles de nitrógeno, el reactivo en exceso es hidrógeno.

Como el reactivo limitante es el nitrógeno y 1 mol de nitrógeno produce 2 moles de amoniaco, las moles de amoniaco son:

3.57 moles de N₂ × (2 moles NH₃ / 1 mol N₂) = 7.14 moles de NH₃

La masa producida idealmente es:

7.14 mol NH₃ ₓ (17g/mol) = 121.4 g de NH₃. Como la eficiencia del proceso es del 80%:

121.4 g NH₃ × 80% = 97.12g NH₃ son formados

Answer:

Excess reactant: H₂

Mass of produced ammonia,  97.1 g

Explanation:

Identify the reaction:

N₂ + 3H₂  → 2NH₃

We identify the reducing agent and the  oxidizing agent:

N₂ changed the oxidation state from 0 to -3. This is the reduction, so it is the  oxidizing agent. By the way the H₂ is the reducing agent.

We convert the mass to moles:

100 g / 28 g/mol = 3.57 moles of N₂

25 g / 2 g/mol = 12.5 moles of H₂

Ratio is 1:3. For 1 mol of nitrogen, we need 3 moles of hydrogen

Then, 3.57 moles of N₂ would need (3.57 . 3) / 1 = 10.7 moles

We have 12.5 moles of H₂, so the hydrogen is the excess reactant and the nitrogen is the limiting.

To produce ammonia, the reaction needs 1 mol of N₂, that can produce 2 moles of product

3.57 moles of N₂ will produce (3.57 . 2) / 1 = 7.14 moles of NH₃

As yield reaction is 80%, we will produce 7.14 mol . 0.80 = 5.71 moles

We convert the moles to mass: 5.71 mol . 17 g / 1mol = 97.1 g

Answer:

Hi, there the answer is

A)extrusion

Explanation:

The feature that causes a gap in the geologic record is called extrusion.

Sometimes magma can force itself through a crack or fault in the rock at the Earth's surface. It pours out over the Earth's surface in a volcanic eruption. This process is called extrusion. The rocks that form from extruded magma are called extrusive igneous rocks.

Direct Extrusion, Indirect Extrusion, Hydrostatic Extrusion and Lateral or Vertical Extrusion are some types of extrusion.

Lava that hardens on the surface is called an extrusion. The rock layers below an extrusion are always older than the extrusion. Beneath the surface, magma may push into bodies of rock. There, the magma cools and hardens into a mass of igneous rock called an intrusion.

Therefore, The feature that causes a gap in the geologic record is called extrusion.

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Answer:

integral of 17 tan*(x) x dx = uv - integral of v du

= (17 tan*(x))(1/2)x^2 - integral of (1/2)x^2 (17 sec^2(x) dx)

= (17/2) tan*(x) x^2 - (17/4) integral of sec^2(x) dx

= (17/2) tan*(x) x^2 - (17/4) tan(x) + C

where C is the constant of integration.

For the second integral, the integral of (64 + e^x)dx, we can integrate each term separately. The integral of 64 dx is simply 64x, and the integral of e^x dx is e^x. Therefore,

integral of (64 + e^x) dx = 64x

Explanation:

Answer has the explaination.

To evaluate the integral of 17 tan(x) x dx, we can use integration by substitution.

Let u = tan(x), then du/dx = sec^2(x) and dx = du/sec^2(x). Substituting these into the integral gives 17∫u du. Integrating u with respect to itself gives (17/2)u^2 + C. Substituting u = tan(x) back in gives the final answer of (17/2)tan^2(x) + C. Don't forget to include the absolute value of tan(x) when necessary. To evaluate the integral, first note the given function: 17tan(x) x^2 dx. We can apply integration by parts, using the formula ∫u dv = uv - ∫v du. Let u = x^2, so du = 2x dx, and let dv = 17tan(x) dx, so v = 17∫tan(x) dx = -17ln|cos(x)|.
Now, uv - ∫v du = -17x^2ln|cos(x)| - ∫(-17ln|cos(x)|)(2x dx). Next, apply integration by parts again on ∫(-17ln|cos(x)|)(2x dx), with u = 2x and dv = -17ln|cos(x)| dx.
Simplify and combine terms, then add C for the constant of integration to obtain the final answer.

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Explanation:

[Ne] 3s² 3p⁵

Image result for What is the electron configuration of chlorine?

Atomic number: 17

Symbol: Cl

People also search for

Argon

Answer:

The term "phenotype" refers to the observable physical properties of an organism; these include the organism's appearance, development, and behavior

An organism's phenotype describe appearance, development, behavior, maybe even levels of hormones or blood cells.

Answer:

the second one I think...

Answer:

The answer is the first one.

Acceleration is the change of velocity

Velocity is another term for speed with direction.

The strategy for balancing the equations is by looking at the number of atoms on each side of the equation and adding coefficients to the molecules.

A balanced equation is an equation for a chemical reaction where the number of atoms for each element in the reaction and the total charge is the same for the reactants and the products,

A strategy that will help balance equations more quickly is balancing by inspection. Here, you look at how many atoms you have on each side of the equation and add coefficients to the molecules to balance out the number of atoms.

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Answer:

161.69×10²³ molecules

Explanation:

Given data:

Volume of water = 499.8 mL

Density of water = 0.967 g/mL

Number of molecules of water = ?

Solution:

First of all we will calculate the mass of water.

Density = mass/volume

0.967 g/mL = mass/499.8 mL

Mass = 0.967 g/mL × 499.8 mL

Mass = 483.3 g

Number of moles of water:

Number of moles = mass/molar mass

Number of moles =  483.30 g / 18 g/mol

Number of moles = 26.85 mol

1 mole contain 6.022×10²³ molecules

26.85 mol ×6.022×10²³ molecules / 1mol

161.69×10²³ molecules

Answer:

density of water at 4.00c  is 0.967 g/mL. Volume of water=499.8mL

Mass of water=density x volume= 0.967 x 499.8=483.3066g

Number of moles of water molecules in given of water = givenmass/molarmass=483.3066/18=26.85

we know that 1 mole has 6.022 x 1023  molecules of water  

so  the number of water=6.022 x 1023  x 26.85=161.69 x 1023 =1.62 x 1025  molecules of water is its upto 3 significant figure.

Explanation:

First reaction: Bi-211 (f) → Tl-207 (a) + α (i), where α is an alpha particle. Second reaction: Tl-207 (w) → Pb-207 (stable isotope) + β (z), where β is a beta particle.


In the first reaction, bismuth-211 (Bi-211) decays through alpha emission, producing thallium-207 (Tl-207) and an alpha particle (α). The equation is:
Bi-211 (f) → Tl-207 (a) + α (i)

In the second reaction, thallium-207 (Tl-207), which was produced in the first reaction, decays through beta emission to form a stable isotope, lead-207 (Pb-207), and a beta particle (β). The equation is:
Tl-207 (w) → Pb-207 (stable isotope) + β (z)
These two equations represent the nuclear reactions that occur as bismuth-211 decays to a stable isotope through both alpha and beta emissions.

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20 one-dollar dollars were randomly distributed among 20 people, or 20 one-dollar bills were randomly divided among 10 entropy .

Compared to solids or liquids, gases possess higher entropies because of their chaotic mobility.This implies that entropy will alter during a process in which the quantity of gas molecules present changes.

Entropy increases as a substance transitions from a solid to a liquid to a gas, and by observing the phases of a reactants and products, you can determine if an entropy change was positive or negative.Entropy rises whenever the number of gas moles rises.

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Answer:

If a fluorine atom gains an electron, it becomes a fluoride ion with an electric charge of -1.

Explanation:

hope this helps

pls mark brainliest

Answer:

ive learned about the chart , ive learned about the coolest chemicle reactions and how. the can change colors , ive also learned that chenistrey is all around us since the beginning of life ,and how liquid can turn solid

Explanation:

The wavelength of an electron can be calculated using the formula: wavelength = h / (mass of electron * velocity). Since kinetic energy is equal to the mass of the electron multiplied by the velocity squared, we can also calculate wavelength by using the formula: wavelength = h / sqrt(2mass of electron kinetic energy).

To convert the kinetic energies given in electron volts (eV) to Joules (J), you can use the formula: 1 eV = 1.6 x 10^-19 J

(a) 20.0 eV = 3.2 x 10^-18 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-18 J) = 2.4 x 10^-12 m or 2.4 pm (picometers)

(b) 200 eV = 3.2 x 10^-17 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-17 J) = 2.4 x 10^-11 m or 24 pm

(c) 2.00 keV = 3.2 x 10^-14 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-14 J) = 2.4 x 10^-8 m or 2.4 nm

(d) 20.0 keV = 3.2 x 10^-13 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-13 J) = 2.4 x 10^-7 m or 24 nm

(e) 0.200 MeV = 3.2 x 10^-11 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-11 J) = 2.4 x 10^-5 m or 0.24 nm

(f) 2.00 MeV = 3.2 x 10^-10 J, wavelength = h / sqrt(2mass of electron3.2 x 10^-10 J) = 2.4 x 10^-4 m or 2.4 nm

A lower energy electron will have a longer wavelength, while a higher energy electron will have a shorter wavelength. To study the crystal structure of NaCl, you would need to use a technique such as X-ray diffraction, which typically uses X-rays with energies in the range of a few keV to a few tens of keV. Based on this, 2.00 keV and 20.0 keV energies are most suited for study of the NaCl crystal structure.

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Answer:

Mayonnaise and blood

Explanation:

Mayonnaise and blood are both examples of colloids.