Not all of the heat released from the crystals as they freeze is lost to water. Where does the remaining heat go?.

Answer:

john dalton.a

ernest rutherford .b

Neoclassical economics focuses on supply and demand as the driving forces behind the production and consumption of goods and services.

It should be noted that Neoclassical economics emphasizes the choices of consumers. Thus, in neoclassical economics, the value of products and services is above the costs of production.

Hubbert's peak theory states that the rise, peak, and decline of fossil fuel production with revolutions in new technology will be longer than originally predicted before the oil reserves run out

The tragedy of the commons is an economic problem of overconsumptio, and depletion of a common pool resource

One thing that puts tremendous pressure on our biodiversity and natural resources is an ever-growing demand for resources by a growing population.

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Answer:

1. Neoclassical economics focuses on supply and demand as the driving forces behind the production and consumption of goods and services.

2. It should be noted that Neoclassical economics emphasizes the choices of consumers. Thus, in neoclassical economics, the value of products and services is above the costs of production.

3. Hubbert's peak theory states that the rise, peak, and decline of fossil fuel production with revolutions in new technology will be longer than originally predicted before the oil reserves run out

4. The tragedy of the commons is an economic problem of overconsumptio, and depletion of a common pool resource

5. One thing that puts tremendous pressure on our biodiversity and natural resources is an ever-growing demand for resources by a growing population.

Answer:

Absolute zero, technically known as zero kelvins, equals −273.15 degrees Celsius, or -459.67 Fahrenheit, and marks the spot on the thermometer where a system reaches its lowest possible energy, or thermal motion. There's a catch, though: absolute zero is impossible to reach.

Explanation:

Good luck!!

Answer:

λ = 2.8 m

Explanation:

Given data:

Frequency of radio wave = 106.7 ×10⁶ Hz

Wavelength of radio wave = ?

Solution:

Formula:

Speed of wave = frequency  × wavelength

speed of wave = 3×10⁸ m/s

by putting values,

3×10⁸ m/s = 106.7 ×10⁶ Hz × λ

Hz = s⁻¹

λ = 3×10⁸ m/s / 106.7 ×10⁶ Hz

λ =  3×10⁸ m/s / 106.7 ×10⁶ s⁻¹

λ =  0.028×10² m

λ = 2.8 m

Answer:

a chemical reaction

Explanation:

What has happened to the statue of liberty is that a chemical reaction has occurred to the materials making up this edifice.

The statue is made up of copper. On reacting with oxygen, it undergoes an oxidation.

This makes the copper to rust and decolorize.

It implies that copper has reacted with oxygen in air and possibly from water.

This gives a new product.

We know this because for most chemical changes, they give new products and are not easily reversible.

Answer:C. He was convicted of murder and executed.

brianliest?

Explanation:

C. He was convicted of murder and executed.

The second temperature of the sample of gas is 24.3°C

The calculation can be done as follows

T1= 27 °c

T2= ?

V1= 10 dm

V2= 9 dm

V1/T1= V2/T2

10/27= 9/T2

Cross multiply

10 ×T2= 9 × 27

T2= 9 × 27/10

= 243/10

= 24.3 °C

Hence the second temperature is 24.3°C

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Answer:A

Explanation: The answer is A because short-day plants grow in fall and spring because they need less sunlight.

Answer:

7198

Explanation:

this is the answer it is the correct one

To compute the flux of \(F(x, y, z) = x^3 i + y^3 j + z^3 k\) over the surface Σ of the sphere \(x^2 + y^2 + z^2 = 9\) using the Divergence Theorem, set up and evaluate the triple integral in spherical coordinates:Flux = ∫₀²π ∫₀ᴨ ∫₀³ (\(3p^4\) sin(φ)) dρ dθ dφ

To compute the flux of the vector field \(F(x, y, z) = x^3 i + y^3 j + z^3 k\) over the surface Σ, which is the surface of the sphere \(x^2 + y^2 + z^2 = 9\), we can apply the Divergence Theorem.

The Divergence Theorem states that the flux of a vector field across a closed surface is equal to the triple integral of the divergence of the vector field over the volume enclosed by the surface.

First, let's calculate the divergence of F:

div(F) = (∂/∂x)(\(x^3\)) + (∂/∂y)(y^3) + (∂/∂z)(\(z^3\))

= \(3x^2 + 3y^2 + 3z^2\)

Now, we need to set up the triple integral using spherical coordinates.

In spherical coordinates, the volume element is given by \(dV = P^2\) sin(φ) dρ dθ dφ, where ρ is the radial distance, θ is the azimuthal angle, and φ is the polar angle.

The surface Σ represents the boundary of the volume enclosed by the sphere. In spherical coordinates, the equation of the sphere \(x^2 + y^2 + z^2 = 9\)becomes \(p^2 = 9\).

The unit outward normal vector on the surface of the sphere can be expressed as n = (ρ/3)p, where p is the unit vector in the radial direction.

Using the Divergence Theorem, the flux (F · n) over the surface Σ is equal to the triple integral of the divergence of F over the volume enclosed by Σ:

Flux = ∭V (div(F)) dV

= ∭V (\(3p^2\)) dV

= ∫₀²π ∫₀ᴨ ∫₀³ (3\(p^2\)) \(p^2\) sin(φ) dρ dθ dφ

Here, the limits of integration are as follows:

ρ: 0 to 3

θ: 0 to 2π

φ: 0 to π

Now, we can calculate the flux by evaluating the triple integral:

Flux = ∫₀²π ∫₀ᴨ ∫₀³ (\(3p^4\) sin(φ)) dρ dθ dφ

Evaluating this triple integral will give us the flux of the vector field F over the surface Σ.

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The general form of a chemical equation is indeed "reactants = products." In a chemical equation, the reactants are the substances that undergo a chemical change or reaction, and the products are the substances that are formed as a result of the reaction.

The equals sign "=" separates the reactants from the products, indicating the transformation that occurs.

The reactants are typically written on the left side of the equation, while the products are written on the right side. The equation represents the conservation of matter, stating that the total number of atoms of each element is the same on both sides of the equation.

For example, a simple chemical equation for the combustion of methane (CH4) can be written as:

CH4 + 2O2 = CO2 + 2H2O

In this equation, methane and oxygen are the reactants, while carbon dioxide and water are the products. The equation shows that one methane molecule reacts with two oxygen molecules to form one molecule of carbon dioxide and two molecules of water. The numbers in front of the molecules (coefficients) indicate the stoichiometric ratios between the reactants and products.

The general form of "reactants = products" provides a concise representation of chemical reactions and allows us to understand the transformation of substances in a balanced and consistent manner.

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Answer:

The cell theory claims these three components:

1. cell is the smallest functional unit of life: It can be observed under the microscope that cells have various type of molecules and organelles present and have adifferent functional role in the cell which explains that the cell is the smallest unit of life as its molecules or organelles can not carry the life process on their own.

2. All organisms are made up of cells: From bacteria and archaea to human and other life forms are made up of a single cell or organization of cells in a specific pattern it also can be observed by the microscopic of blood or other tissue or cell of an organism.

3. Arise from pre-existing cell: The cells are can be studied under a microscope during cell division where we can observe that new cells come from the pre existing cell by the cell division.

The molar concentration of a 12% sodium chloride solution is approximately 2.05 M.

To determine the molar concentration of a 12% sodium chloride solution, we need to convert the given percentage concentration into molarity.

First, we need to understand that the percentage concentration refers to the mass of the solute (sodium chloride) relative to the total mass of the solution.

In this case, a 12% sodium chloride solution means that there are 12 grams of sodium chloride in 100 grams of the solution.

To convert this into molar concentration, we need to consider the molar mass of sodium chloride, which is 58.5 g/mol.

We can start by calculating the number of moles of sodium chloride in 12 grams:

Moles of sodium chloride = mass of sodium chloride / molar mass of sodium chloride

Moles of sodium chloride = 12 g / 58.5 g/mol = 0.205 moles

Next, we calculate the volume of the solution in liters using the density of the solution. Since the density is not provided, we assume a density of 1 g/mL for simplicity:

Volume of solution = mass of solution / density

Volume of solution = 100 g / 1 g/mL = 100 mL = 0.1 L

Finally, we calculate the molar concentration (Molarity) by dividing the number of moles by the volume in liters:

Molar concentration = moles of solute / volume of solution

Molar concentration = 0.205 moles / 0.1 L = 2.05 M

Therefore, the molar concentration of a 12% sodium chloride solution is approximately 2.05 M.


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Red gold is a gold-copper alloy that is commonly used to make jewelry. To calculate the percentage by mass of each metal in the jewelry, you need to determine the mass of gold and copper in the jewelry. The mass of gold can be calculated using the density of gold and the volume of gold in the jewelry:

mass of gold = density of gold * volume of gold

mass of gold = 19.3 g/cm³ * 0.559 cm³

mass of gold = 10.8 g

The mass of copper can be calculated using the density of copper and the volume of copper in the jewelry:

mass of copper = density of copper * volume of copper

mass of copper = 8.96 g/cm³ * (0.559 cm³ - 0.559 cm³)

mass of copper = 0 g

The total mass of the jewelry is 10.8 g + 0 g = 10.8 g.

Therefore, the percentage by mass of gold in the jewelry is 10.8 g/10.8 g = 100%. The percentage by mass of copper in the jewelry is 0 g/10.8 g = 0%.

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Based on the given statements, Student 1 employs correct scientific reasoning.

Based on the given statements, Student 1 employs correct scientific reasoning by explaining a possible source of error in terms of the physical properties of the system. They suggest that if the spot was placed below the solvent level, the sample would be dissolved into the solvent pool before it could travel up the plate, leading to inaccurate results. This is a valid explanation based on the principles of chromatography and the physical behavior of the sample and solvent.

Student 2 also provides a valid explanation based on the principle of polarity, but they do not specify how this might lead to unequal movement of the sample on the TLC plate.

Student 3's statement, on the other hand, does not provide a clear explanation of how closing the developing chamber too quickly might affect the outcome of the lab, and it does not demonstrate a clear understanding of the scientific principles involved.

Therefore, based on the given statements, Student 1 employs correct scientific reasoning.

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Answer:Hi! I hope this will help you with your question, whether this is an assignment or not. The answer that I get is 0.033 concentration.

If 0.0025 mol NaNo3 forms during the reaction, the concentration of NaNO3 in the final solution should be 0.033.

Explanation:

Answer:

48.03grams

Explanation:

Density of a substance is calculated as follows:

Density (g/cm³) = mass (g) / volume (cm³)

Based on the information given in this particular question:

Density of lead (Pb) = 11.3 g/cm³

Volume of lead (Pb) = 4.25 cm³

Density = m/V

11.3 = mass/4.25

Mass = 48.025

= 48.03grams.

Answer:

B. a military unit

Explanation:

Hello there :) here are the answers and hope you a GREAT Thanksgiving :)

0.043 grams

Answer: C. A substance that results when two or more substances combine physically but not chemically

Answer:

6.14x10^24

Explanation:

convert the given 47.0g to mols then to molecules.

\(\frac{47.0g}{} x\frac{1mol}{46.07g}x\frac{6.022x10^{23} }{1 mol}\)

46.07 is the molar mass of ethanol

6.022x10^23 is avogadros number

The Wittig reaction offers several advantages over many elimination reactions, including high selectivity and yields, mild reaction conditions, and versatility. These factors make it a popular choice for synthesizing alkenes in a wide range of applications.

The Wittig reaction is a useful method for synthesizing alkenes from aldehydes or ketones and phosphonium ylides. It is advantageous over many elimination reactions because it provides high selectivity and yields, and it avoids the formation of by-products. Unlike elimination reactions, which can lead to a mixture of products, the Wittig reaction provides a single product with a defined stereochemistry.
Another advantage of the Wittig reaction is that it is a milder process than many elimination reactions. It typically requires less harsh reaction conditions, such as high temperatures or strong acids or bases. This means that the reaction can be performed on a wider range of substrates, including those that are sensitive to harsh conditions.
Furthermore, the Wittig reaction is a highly versatile reaction that can be used to synthesize a wide range of alkenes, including complex and highly substituted compounds. It can also be used in combination with other reactions to create more complex molecules.
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The valence states provided are general representations and may vary depending on specific conditions and coordination environments.

a. Uvarovite: The mineral formula for uvarovite is Ca3Cr2(SiO4)3. In this formula, the valence state of calcium (Ca) is +2, the valence state of chromium (Cr) is +3, and the valence state of silicon (Si) is +4. Oxygen (O) is usually assigned a valence state of -2.

b. Azurite: The mineral formula for azurite is Cu3(CO3)2(OH)2. In this formula, the valence state of copper (Cu) is +2, carbonate (CO3) has a valence state of -2, and hydroxide (OH) has a valence state of -1.

c. Cuprite: The mineral formula for cuprite is Cu2O. In this formula, the valence state of copper (Cu) is +1, and oxygen (O) is usually assigned a valence state of -2.

d. Gypsum: The mineral formula for gypsum is CaSO4·2H2O. In this formula, the valence state of calcium (Ca) is +2, sulfur (S) has a valence state of +6, and oxygen (O) is usually assigned a valence state of -2. The water molecules (H2O) do not have a net charge.

e. Galena: The mineral formula for galena is PbS. In this formula, the valence state of lead (Pb) is +2, and sulfur (S) has a valence state of -2.

It's important to note that the valence states provided are general representations and may vary depending on specific conditions and coordination environments.

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The hydronium ion concentration of a solution formed from 15.00 ml of 0.250 m ammonia, \(NH_3\), and 100.0 ml of 0.200 m hydrochloric acid, HCl is 0.536 M.

In order to calculate the hydronium ion concentration of a solution, we can use the equation provided below:

\(C_1V_1 = C_2V_2\)

Where, \(C_1\) is the initial concentration of the first solution

\(V_1\) is the initial volume of the first solution

\(C_2\) is the final concentration of the final solution

\(V_2\) is the final volume of the final solution

Given: Initial concentration of ammonia (\(NH_3\)) = 0.250 m

Initial volume of ammonia (\(NH_3\)) = 15.00 ml

Final concentration of the solution = \(C_2\)

Initial volume of the final solution = 15.00 ml + 100.0 ml = 115.00 ml

Molarity of hydrochloric acid (HCl) = 0.200 m

Now, let's use the equation provided above,

\(C_1V_1 = C_2V_2\)

\(C_2 = (C_1V_1) / V_2C_2\)

        = (0.250 mol/L) (0.0150 L) / 0.1150 L

\(C_2\) = 0.0329 mol/L

Concentration of hydronium ion (\(H_3O^+\)) = 2 x 0.0329 M

                                                                 = 0.536 M

Therefore, the hydronium ion concentration of a solution formed is 0.536 M.

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Answer:

COOH is the carboxylic acid.

Answer:

hi again

I : Television. Satellites send television signals directly to homes

II : gravity

Answer:

1) I would say television and streaming channels. 2) gravity

Explanation:

The chocolate chips that are in one mole of chocolate chips is 6.02214 × 10²³ chips.

The mole of a substance is defined as the amount of substance that is my are up of 6.02214 × 10²³ particles and this number is called the Avogadro's number.

This means that 1 mole of substance= 6.02214 × 10²³ of particles that makes up the substance.

The Avogadro's number is a constant used for all substances such as the chocolate chips.

That is to say, one mole of the chocolate chips has a mass of 0.324 g but contains 6.02214 × 10²³ particles of chocolate chips.

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The number of chocolate chips that are included inside one mole of chocolate chips is equal to 6.02214 ×10^23 chips.

The quantity of a material that may be made up of 6.02214 ×10^23 particles is referred to as a mole, and this number is known as Avogadro's number. The mole is the unit of measure used to describe this quantity.

This indicates that there are 6,02214×10^23 particles in one mole of the material, which implies that one mole of the substance is equal to one mole.

Avogadro's number is a constant that is applied to many different kinds of things, including chocolate chips.

In other words, one mole of chocolate chips has a mass of 0.324 g, yet it includes 6.02214 ×10^23 individual chocolate chip particles.

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Answer:

The new pressure of the gas is 395.5mmHg

Explanation:

The pressure of a gas is inversely proportional to its concentration (Boyle's law). The equation that explain this law is:

P₁V₁ = P₂V₂

Where P is pressure

And V is volume of 1, initial state and 2, final state of the gas

Initial state:

791mmHg; 0.500L.

Final state:

1.00L

Replacing:

791mmHg* 0.500L = P₂*1.00L

P₂ = 395.5mmHg

Answer:

Nonmetals have more valence electrons and increase their stability by gaining electrons to become anions.

Answer: Because they are on the father side of the periodic table

Explanation: Electronegativity increases as you move from left to right on the periodic table