Which describes a homogeneous mixture?

A solvent dissolves in a solute to make a solution.
A solute dissolves in a solvent to make a solution.
A solution dissolves in a solute to make a solvent.
A solution dissolves in a solvent to make a solute.

Answer:

Nuclear energy powers our businesses, homes and military. America’s 95 operating nuclear reactors generate approximately 20% of our nation’s electricity and provide over half of our carbon-free energy. They also create good-paying jobs at power plants and uranium mines. Wyoming produced 87% of America’s domestic uranium supply in 2018.

Today, nuclear energy faces serious hurdles. Regulatory costs and subsidies for renewable energy technologies are forcing America’s nuclear power plants to close at an alarming rate.

Russia and China are subsidizing their government-owned nuclear companies to assert their energy influence around the world. China is searching the globe for uranium reserves and investing heavily in the countries where it’s found. They want to secure more nuclear fuel for themselves and increase their control of the global supply.

Meanwhile, American nuclear power plants have come to rely on cheap Russian imports of uranium to meet their nuclear fuel needs. Right now, roughly 40% of the uranium coming into the United States originates in Russia or its satellite states of Kazakhstan and Uzbekistan. Russian-backed companies are developing fuel that can be placed directly in American reactors.

Explanation:

Answer: 4

Explanation:

When slip occurs in a material, the critical resolved shear stress (CRSS) is used to determine the minimum shear stress required to start the slip.

Given that a tensile stress is applied on a nickel crystal along a 1011 direction, and slip occurs on a (111) plane and in a (101) direction, the critical resolved shear stress will be computed as follows: Calculation for g[000] Since the tensile stress is applied along the 1011 direction, g[000] = 0.Calculation for g[1012]:The direction of slip (101) lies in the (1012) plane. Therefore, g[1012] = 1.Calculation for .

From the direction of the applied tensile stress and the direction of the slip plane, we can use the expression given as o = cas-1 [g [000) + 1012 (1210²+1²) (12+0 24 1²) 2 to determine o. Substituting the values of g[000], g[1012], and other parameters gives us.

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Answer:

Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell. Metallic character increases as you move down an element group in the periodic table. This is because electrons become easier to lose as the atomic radius increases, where there is less attraction between the nucleus and the valence electrons because of the increased distance between them.

The lines in a line graph aid in the fairly early detection of trends, allowing the viewer to make predictions about the data that has not yet been recorded.These are appropriate for illustrating the data points since, given one variable, the other is simple to ascertain.

A line graph, often known as a line chart, is a visual representation of data that is continuously changing over time.

There are two axes. in a line graph, the occurrences and categories being compared throughout time are shown on the x-axis (abscissa), and the scale, which is a group of integers that reflects the data and is divided into equal intervals, is shown on the y-axis (ordinate).

Depending on the data, the graph's lines may either decline or ascend. It is practical to plot time graphs along the x/y axis since it shows the rise and fall of data points in great detail.

The reader may readily see changes in one group over time by choosing the appropriate scales for each axis (time on the x-axis and change is measured on the y-axis).

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Answer:

Explanation:We first calculate the heat released:

Specific heat = 3.21 kJ/kgK

Heat released = heat absorbed by calorimeter

Heat absorbed = mcΔT

= 1.9 x 3.21 x 4.542

= 27.7 kJ

Now, we calculate the moles of hexane present:

Moles = mass / Mr

moles = 0.58 / (12 x 6 + 14)

= 0.0067

Heat of combustion = 27.7 / 0.0067 kJ/mol

ΔH(combustion) = 4,134.3 kJ / mol

Answer:

Barium get it like "bury him" but since he's a chemist you referred to the element Barium.

suchhh a knee slapper

Rainforests are not generally considered a source of none of the above choices. You can get food from Rainforests, and also spices and medicines. In fact, Rainforests have a variety of plants that have medicinal properties. When you know how to find the right plant in the rainforests, you can access almost everything.

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Answer:

D. None of the above

Explanation:

trusttt

Answer:

We will have zero bonds

Explanation:

In this case, we have to start with the structure of 4,5-diethyloctane. This name ends with the suffix "ane" therefore we have an alkane. All the alkanes are made with single bonds between carbons and single bonds between carbon and hydrogen.

The molecule will have a carbon chain of eight carbons and we will have 2 branches, one ethyl on carbon 4 and another ethyl on carbon 5. (see figure 1)

Answer:

South Africa has problems of xenophobia because there are mor bacteria than a normal country

Explanation:

Hope this helps

The law of conservation of energy states that energy cannot be created or destroyed, but it can be transformed from one form to another.

In the case of a pendulum, mechanical energy is constantly being converted between potential energy (when the pendulum is at its highest point) and kinetic energy (when the pendulum is at its lowest point).

As the pendulum swings back and forth, the mechanical energy is gradually transformed into other forms of energy, such as thermal energy (due to air resistance and friction) and sound energy (due to vibrations of the pendulum and the air around it). This transformation of energy causes the pendulum to gradually slow down and eventually come to a stop.

Therefore, the best explanation for what happens to the motion of the pendulum due to the law of conservation of energy is that the pendulum will slow down and eventually stop moving as the mechanical energy transforms to thermal energy.

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Weathering breaks down rock and other material

The term mole concept is used here to determine the theoretical yield of H₂. The theoretical yield of H₂ is 1.75 g and the moles of Fe is 10.8. The correct options are D and C.

One mole of a substance is defined as that amount of it which contains as many particles or entities as there are atoms in exactly 12 g of Carbon - 12. The equation used to calculate the number of moles is:

Number of moles (n) = Given mass / Molar mass

The theoretical yield of H₂ is:

1. 3.5 × 1/2 = 1.75 g

2. The moles of Fe needed to react with 8.1 mole of O₂ is:

8.1 × 4 / 3 = 10.8 mole

Thus the correct options are D and C.

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Explanation:

a process for separating minerals from gangue by taking advantage of the differences in their hydrophobicity.

I believe that is accurate

hope this helped have a nice day

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A mixture of 10.0 f of Ne and 10.0 g of Ar have a total pressure of 1.60 atm. The partial pressure of Ar is 0.832 atm.

When dealing with mixtures of gases, Dalton's Law of Partial Pressures is frequently used. It states that the total pressure exerted by a mixture of non-reacting gases is the sum of the partial pressures of the component gases.

The mole fraction of Ar in the given mixture can be calculated first.

molAr/mol

Total = 10.0 g/39.95 g mol-1 /

(10.0 g/20.18 g mol-1 + 10.0 g/39.95 g mol-1) = 0.5007.

This indicates that Ar makes up roughly 50% of the mixture's overall number of moles of gas.

Total pressure = pressure of Ne + pressure of Ar,

therefore, pressure of Ar = Total pressure - pressure of Ne.

The pressures of Ne and Ar can be determined using the ideal gas law, PV = nRT.

Assume that the mixture's temperature is kept constant and that the two gases act as ideal gases. It's important to remember that the volume in the equation must be measured in liters (L), the pressure in atmospheres (atm), and the amount in moles (mol).

n = m/M, m is mass and M is molar mass,

m(Ar) = 10.0 g,

M(Ar) = 39.95 g mol-1,

m(Ne) = 10.0 g,

M(Ne) = 20.18 g mol-1n

(Ar) = 10.0 g/39.95 g mol-1

= 0.2503 mol, n

(Ne) = 10.0 g/20.18 g mol-1

= 0.495 mol

The moles of Ar and Ne in the mixture are 0.2503 mol and 0.495 mol, respectively.

P(Ar) = n(Ar)RT/V,

V = nRT/P,

P = nRT/V

Substituting n(Ar) = 0.2503 mol,

R = 0.0821 L atm mol-1 K-1,

T = temperature in K, and V = volume in liters, we have

P(Ar) = 0.2503 × 0.0821 × T / V.

P(Ne) = n(Ne)RT/V

Substituting n(Ne) = 0.495 mol, R = 0.0821 L atm mol-1 K-1, T = temperature in K, and V = volume in liters, we have

P(Ne) = 0.495 × 0.0821 × T / V.1.60 atm

= P(Ne) + P(Ar)

0.2503 × 0.0821 × T / V + 0.495 × 0.0821 × T / V = 1.60 atm

0.0821T / V = 6.18

Therefore, P(Ar) = 1.60 atm - P(Ne) = 1.60 atm - 0.495 × 0.0821 × T / V = 0.832 atm (approximately).

Therefore, the partial pressure of Ar is 0.832 atm.

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Answer:

get a little more than that is a great deal for the company and inventor of a company how can we get u a great job with their best friend in a few months but il will send you i will be the only person I know of fishes and the best I have to ask me to make it to my own home wifi and I am grade up to the same thing and the same way of the American people I have a lot to make a simple one person

The three spheres that interact in the process of melting sea ice due to increased greenhouse gases are the atmosphere, hydrosphere, and cryosphere.

The atmosphere contains the greenhouse gases that trap heat, causing the Earth's surface to warm. The hydrosphere is the sphere that contains the ocean, which absorbs a large amount of the heat caused by the greenhouse gases. The cryosphere is the sphere that contains the ice, which is melting as a result of the warming caused by the greenhouse gases in the atmosphere and the heat absorbed by the ocean in the hydrosphere.

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Answer:

B: It depends on how a substance was formed.

Explanation:

took the test

Intensive property is the same for every sample of a single substance.

INTENSIVE AND EXTENSIVE PROPERTIES:

Hence, intensive property is the same for every sample of a single substance.

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Answer: Its a weak base

Explanation: Clicked on that and got the answer right. :)

The image that has been shown has helped us to know that the particles are weak bases. Option A

A chemical species or substance that has a restricted capacity to receive or interact with protons (H+ ions) in a solution is said to be a weak base. Weak bases only partially ionize or interact with water, in contrast to strong bases, which totally breakdown into ions in water and quickly take protons.

Compared to strong bases, weak bases have a lesser affinity for protons and fewer alkaline characteristics. They are frequently identified by the considerably lower concentration of hydroxide ions (OH-) in a solution and their imperfect dissociation equilibrium.

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Answer:

29 i think

Explanation:

Answer:

Repetition

Explanation:

In the world of science, experiments are regularly conducted to test out hypotheses. These experiments are however, not conducted by scientist once to derive a result. They are rather conducted multiple times (repeated) to ascertain the accuracy i.e not as a result of random occurrence. The experiments that undergo multiple trials are said to undergo REPETITION.

This is the case of the scientist in this question, who is conducting an experiment to test what temperature causes the fastest growth rate in sunflower plants. He conducted the experiment multiple times, making it an example of REPETITION.

N.B: Replication is when the experiment is re-conducted by another scientist to see if same result is derived.

Oil is unable to dissolve well in water because water is polar and oil is nonpolar, which means they have no attraction for each other.

Water molecules are polar, which means they have a slightly positive charge on one end and a slightly negative charge on the other end. Oil molecules, on the other hand, are nonpolar, which means they have no charge separation. As a result, water and oil are not compatible for mixing together.

The cohesive properties of water also make it difficult for polar oil to pull the water molecules apart and dissolve in it. Additionally, oil molecules are too large to fit between the closely spaced water molecules in the liquid state, making it difficult for them to dissolve in water. Due to these reasons, oil and water tend to separate from each other and form distinct layers instead of dissolving into each other.

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a) The Lennard-Jones potential predicts the separation r_eq at the minimum energy U_min.

b) The U_min for this interaction at T=298 K is the value obtained from the Lennard-Jones potential equation when r=r_eq.

c) The ratio of U_min to the purely attractive van der Waals component of the interaction potential at r_eq can be calculated by comparing the attractive part (-A/r^6) to the total potential energy U_min.

d) The ratio of r_eq to r_0, where u(r_0)=0.4, can be determined by finding the value of r_eq where the potential energy is equal to 0.4 times the total potential energy at r=r_0.

e) The ratio of r_s to r_0, where r_s is the separation where the magnitude of the attractive adhesion force is maximum, can be determined by finding the value of r where the derivative of the potential energy with respect to r is equal to zero.

f) The value of F_max between the two atoms can be obtained by taking the negative derivative of the potential energy equation with respect to r and evaluating it at r=r_s.

a) The Lennard-Jones potential provides information about the relationship between energy and separation between two interacting atoms.

At the minimum energy (U_min), the potential predicts the separation r_eq, which corresponds to the equilibrium distance between the atoms. This is the distance at which the energy of the system is at its lowest point.

b) To determine the value of U_min at a given temperature (T=298 K), you can substitute the equilibrium separation r_eq into the Lennard-Jones potential equation and calculate the resulting energy value.

This will give you the U_min for the interaction.

c) The Lennard-Jones potential consists of two components: an attractive component (-A/r^6) and a repulsive component (B/r^12).

The ratio of U_min to the purely attractive van der Waals component of the interaction potential at r_eq can be calculated by comparing the magnitude of the attractive component to the total potential energy at the equilibrium separation.

This ratio provides insights into the relative contribution of the attractive force to the overall potential energy at equilibrium.

d) The ratio of r_eq to r_0 can be determined by finding the value of r_eq where the potential energy is equal to 0.4 times the total potential energy at r=r_0.

In other words, you need to solve the Lennard-Jones potential equation for r_eq when the potential energy is equal to 0.4 times the potential energy at r=r_0.

e) The ratio of r_s to r_0 is obtained by finding the value of r where the magnitude of the attractive adhesion force is maximum.

This can be determined by finding the separation r where the derivative of the potential energy equation with respect to r is equal to zero.

The value of r_s represents the separation at which the attractive force between the atoms is strongest.

f) The value of F_max between the two atoms can be obtained by taking the negative derivative of the Lennard-Jones potential energy equation with respect to r and evaluating it at r=r_s.

This will give you the magnitude of the maximum attractive adhesion force between the atoms.

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a) The sphere emits thermal radiation at a rate of 139.75 Watts.

b) The sphere absorbs thermal radiation at a rate of 37.66 Watts.

c) The sphere's net rate of energy exchange is 102.09 Watts.

To calculate the rates of thermal radiation emission and absorption, we can use the Stefan-Boltzmann law, which states that the rate of thermal radiation emitted or absorbed by an object is proportional to its surface area, temperature, and the Stefan-Boltzmann constant.

a) The rate of thermal radiation emitted by the sphere can be calculated using the formula:

Emitting Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(temperature^4 - environment\ temperature^4\))

Plugging in the given values:

Emitting Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((32.2 + 273.15)^4 - (82.9 + 273.15)^4)\)

Emitting Rate ≈ 139.75 Watts

b) The rate of thermal radiation absorbed by the sphere can be calculated in a similar way but using the environment temperature as the object's temperature:

Absorbing Rate = emissivity * surface area * Stefan-Boltzmann constant * (\(environment\ temperature^4 - temperature^4\))

Plugging in the given values:

Absorbing Rate = \(0.924 * (4\pi * (0.457)^2) * 5.67 \times 10^{-8} * ((82.9 + 273.15)^4 - (32.2 + 273.15)^4)\)

Absorbing Rate ≈ 37.66 Watts

c) The net rate of energy exchange is the difference between the emitting rate and the absorbing rate:

Net Rate = Emitting Rate - Absorbing Rate

Net Rate = 139.75 Watts - 37.66 Watts

Net Rate ≈ 102.09 Watts

Therefore, the sphere emits thermal radiation at a rate of 139.75 Watts, absorbs thermal radiation at a rate of 37.66 Watts, and has a net rate of energy exchange of 102.09 Watts.

Note: The units for all the rates are Watts.

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Answer:

Chlorine

Explanation:

The impulse experienced by a body is equivalent to its change in momentum. Therefore, the valid answer for the given question is option C.

The impulse experienced by an object can be defined as the change in momentum of the object that occurs when an unbalanced force acts on it.In an isolated system of particles, the momentum of the system is conserved regardless of the number of collisions that occur within the system. Hence, the valid answer for this question is option A, true.In an elastic collision, the kinetic energy of the collision before and after the collision will not change.

Therefore, the valid answer for this question is option A, true. In an elastic collision, both the momentum and kinetic energy of the colliding particles are conserved. The total kinetic energy of the colliding particles before the collision will be equal to the total kinetic energy of the colliding particles after the collision.

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Based on FMO theory, the reactivity of a nucleophile will be related to the HOMO energy of its molecular orbitals.

Thus, the correct answer is HOMO energy.

Bаsed on frontier moleculаr orbitаl (FMO) theory аnd the Eyring equаtion of the trаnsition stаte theory, showing thаt the nucleophilicity of а molecule is relаted to the energy of this molecule’s highest occupied moleculаr orbitаl (HOMO), while the electrophilicity is relаted to the energy of the lowest unoccupied moleculаr orbitаl (LUMO) of the electrophile.

Аb initio cаlculаtion results support these lineаr relаtionships between LUMO energies аnd the Mаyr electrophilicity (E) аnd the HOMO energies аnd the Mаyr nucleophilicities (N) for sets of electrophiles аnd nucleophiles, respectively.

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Answer: come on man its not that hard

Explanation: