In which order would these rocks and minerals be found in the layers of Earth from the crust to the lower mantle?

eclogite, perovskite, rhyolite, stishovite
stishovite, rhyolite, perovskite, eclogite
stishovite, perovskite, eclogite, rhyolite
rhyolite, eclogite, perovskite, stishovite

Answer:

The second student with mass 70kg has more momentum

Explanation:

Using the formula:

p = m × v

Where;

p = momentum (kgm/s)

m = mass (kg)

v = velocity (m/s)

According to this question, two students are running in a cross country race.

Student 1 has the following; m = 60kg, v = 7m/s

Student 2 has the following; m = 70kg, v = 7m/s

Using p = mv

Student 1, p = 60 × 7 = 420 kgm/s

Student 2, p = 70 × 7 = 490 kgm/s

From the result of the above calculations, student 2 with mass 70kg has more momentum.

Explanation:

An extensive property is a property that depends on the amount of matter in a sample. Mass and volume are examples of extensive properties. An intensive property is a property of matter that depends only on the type of matter in a sample and not on the amount.

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The main difference between reactions with aldehydes and acyl chlorides is the reactivity and range of nucleophiles that can be used.

The reactions between aldehydes and nucleophiles are fundamentally different than reactions between acyl chlorides and nucleophiles in several ways. Aldehydes are less reactive than acyl chlorides due to the absence of the electron-withdrawing effect of the chlorine atom in acyl chlorides. Therefore, reactions with aldehydes are typically slower and require more reactive nucleophiles or higher temperatures. Additionally, aldehydes can undergo reduction reactions to form primary alcohols, whereas acyl chlorides cannot. In contrast, reactions with acyl chlorides are much more reactive due to the electron-withdrawing effect of the chlorine atom, resulting in faster reactions and a wider range of nucleophiles that can be used. Additionally, acyl chlorides cannot undergo reduction reactions to form primary alcohols.

Depending on how the atoms are arranged in their chemical structure, aldehydes and ketones can exist in both cyclic and linear forms. Cyclic aldehydes and cyclic ketones are both feasible; cyclic aldehydes like cyclohexanol and cyclic ketones like cyclohexanone are examples of such molecules. Aldehydes and ketones are two types of organic compounds that belong to the class of compounds known as carbonyl compounds.

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Answer:

The answer is B

Explanation:

Answer:

Hello!

Your answer is B) Ca(HCO3)2!!

Explanation:

Hope this helps you!!

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The difference in synthesis reaction and decomposition reactions is that a synthesis reaction occurs when two or more simple chemicals combine to create a more complex result. One reactant produces two or more products in a decomposition reaction , is a another type of chemical reaction.

The comparison of synthesis reaction and decomposition reactions is explained as ,

As two of the most significant categories of chemical reactions to take place in nature is synthesis and decomposition reaction have significant scientific importance. The breaking of chemical bonds between atoms to form new atomic arrangements is referred to as a chemical reaction. Reactants are the atoms or combinations of atoms that participate in a chemical reaction, while products are the newly produced compounds. All chemical processes that take place in biological systems can be divided into four groups: synthesis processes, breakdown processes, exchange processes, and reversible processes.

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According to mole concept, mass of 5.2 moles of calcium nitrate is 853.216 g.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

Number of mole= mass / molar mass, thus, mass =5.2×164.08=853.216 g.

Thus, the mass of 5.2 moles of calcium nitrate is 853.216 g.

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The heat absorbed by the water sample for vaporization has been 6,105 kJ. Thus, option D is correct.

The heat of vaporization has been the amount of heat required to vaporize 1 gram of liquid.

The heat required for the vaporization has been given as:

\(Q=m\Delta H_{vap}\)

The heat of vaporization of water has been given as, \(\Delta H_{vap}=40.7\;\rm kJ/mol\)

The mass of water sample has been, \(m=150\;\rm g\)

Substituting the values for the heat energy absorbed, Q:

\(Q=150\;\times\;40.7\;\rm kJ\\ \textit Q=6,105\;kJ\)

The heat absorbed by the water sample for vaporization has been 6,105 kJ. Thus, option D is correct.

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Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$

Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$

The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.

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Scientists generally assume that a thick tree ring indicates that the temperature was warm and the precipitation was plentiful during the growing season. Option 2 is the answer.

Precipitation refers to any form of water that falls from the atmosphere and reaches the ground, such as rain, snow, sleet, or hail. It is a crucial part of the water cycle and is essential for the growth of plants and animals, as well as for human activities such as agriculture and hydroelectric power generation.

Temperature has a significant impact on precipitation patterns. Warm temperatures tend to increase the rate of evaporation, which can lead to more water vapor in the air and potentially more precipitation. In some cases, higher temperatures can also lead to more intense storms and rainfall events, such as during tropical cyclones or thunderstorms.

Scientists generally assume that a thick tree ring indicates that the temperature was warm and the precipitation was plentiful during the growing season. This is because warm temperatures and abundant moisture tend to promote more robust growth in trees, resulting in wider rings. Conversely, cold temperatures and a lack of precipitation can lead to stunted growth and thinner rings. Therefore, a thick ring is often seen as a positive indication of favorable growing conditions.

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Answer: YEAH ITS the third one

Explanation: duhh

The effects of volcanic eruption include acid rain and destruction of lives and property.

The term abiotic factors refers to those factors that are non living such as rainfall, topography, etc. The adaptation of organisms in avoiding unfavorable condition due to a change in abiotic factor is hibernation of a snake from September to December.

A volcanic eruption is a sudden outburst of molten magma from the earth's crust. The effects of volcanic eruption include acid rain and destruction of lives and property.

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In a chemical reaction at constant temperature, the addition of a catalyst provides an alternative reaction pathway with a different activation energy.

A catalyst is a substance that increases the rate of a chemical reaction by providing an alternative reaction pathway with a lower activation energy. The activation energy is the minimum energy required for a reaction to occur. By lowering the activation energy, a catalyst facilitates the formation of the transition state and increases the rate at which reactant molecules can convert into products.

A catalyst itself remains unchanged in the reaction, meaning it is neither consumed nor permanently altered. It works by providing an alternative pathway that involves different intermediate steps and lower activation energies. This allows the reaction to proceed more readily and at a faster rate.

The addition of a catalyst does not affect the equilibrium constant (choice b) or the energy released in the chemical reaction (choice c). It also does not directly impact the concentration of products at equilibrium (choice d) or the fraction of molecules with a given kinetic energy (choice e).

In summary, a catalyst increases the rate of a chemical reaction by providing an alternative reaction pathway with a lower activation energy. It does not affect the equilibrium constant, the energy released in the reaction, the concentration of products at equilibrium, or the fraction of molecules with a given kinetic energy.

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The term that describes the application of water to farmland from a source such as a lake or river is "irrigation."

What is Irrigation?

Irrigation is the process of artificially supplying water to crops or plants to promote their growth and development. It involves the application of water to agricultural land using various techniques, such as sprinklers, drip systems, or flood irrigation. The primary purpose of irrigation is to supplement the natural rainfall that is insufficient or irregular in certain regions, allowing farmers to grow crops in areas that would otherwise be unsuitable for farming. Irrigation systems can be designed to deliver the required amount of water directly to the roots of plants, which can increase crop yields and improve the quality of the produce. However, overuse or mismanagement of irrigation can lead to waterlogging, soil salinization, and other environmental problems.

Irrigation is the artificial application of water to land for the purpose of agricultural production. It is a critical practice in areas where rainfall is insufficient or unreliable, as it provides a reliable source of water for crops to grow. Irrigation systems can vary widely depending on the type of crops being grown, the availability of water, and the topography of the land.

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Since the nucleus houses the neutron and the proton, it then follows that the nucleus is the point where most of the mass of the atom is concentrated.

The nucleus is composed of protons and neutrons. We know that the mass of the proton is 1640 times the mass of the electron. The neutron only contributes to the mass of the atom.

Since the nucleus houses the neutron and the proton, it then follows that the nucleus is the point where most of the mass of the atom is concentrated.

The electron has a negligible mass therefore, the electron does not contribute to the mass of the atom.

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Answer:

there will be less and less space

Explanation:

Answer:

Ionic

Explanation:

If there is a difference in electronegativity one of the atoms will want to hog the electron. This causes the charge to be +1 or -1 as they become ions. Also, I got it RIGHT ON ODESSYWARE!!!

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Ionic bond is a type of bond that will be formed for atoms that have a +1 or -1 charge. The correct option is option D.

Many of the relationships that are responsible for the incorporation of atom into ions, crystals, molecules, and other permanent species which make up the recognisable materials of everyday life are known as chemical bonds. when two atoms are in close proximity.

Their interactions and natural spatial distribution of their particles and electrons result in a lower total energy than would otherwise be the case. A set of atoms will link together if their combined energy is lower than the average of the values of their constituent atoms. This energy difference is known as the bonding energy. One of the atoms will attempt to capture the electron if there's a difference in electronegativity. As a result, when they produce ions, the charge is either +1 or -1.

Therefore, ionic bond is a type of bond that will be formed for atoms that have a +1 or -1 charge.  The correct option is option D.

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The solubility of oxygen at 10m depth below sea level, 25 degrees Celsius, and 30 g/L salinity is approximately 6.59 mg/L.

To calculate the solubility of oxygen at a specific depth below sea level, temperature, and salinity, we can refer to the oxygen solubility tables. The solubility of oxygen can vary depending on these factors.

1. Begin by identifying the given parameters:
  - Depth: 10m below sea level
  - Temperature: 25 degrees Celsius
  - Salinity: 30 g/L

2. Use the given parameters to locate the corresponding values in the oxygen solubility table.

3. The solubility of oxygen at a depth of 10m below sea level, 25 degrees Celsius, and 30 g/L salinity is typically around 6.59 mg/L.

Therefore, the solubility of oxygen at 10m depth below sea level, 25 degrees Celsius, and 30 g/L salinity is approximately 6.59 mg/L.

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The oxygen solubility at 10m depth below sea level, 25°C, and 30 g/L salinity is approximately 1538 mol/L.

To calculate the oxygen solubility at a specific depth below sea level, temperature, and salinity, we can use the solubility formula.

The solubility of a gas decreases with increasing temperature and salinity, and increases with increasing pressure.

Here's how you can calculate the oxygen solubility at 10m depth below sea level, 25°C, and 30 g/L salinity:

1. Determine the pressure at 10m depth below sea level: -

The pressure at sea level is approximately 1 atmosphere (atm).

The pressure increases by approximately 1 atm for every 10 meters of depth.

Therefore, at 10m depth, the pressure is approximately 2 atm.

2. Convert the temperature to Kelvin: -

To convert from Celsius to Kelvin, add 273 to the temperature.

25°C + 273 = 298 K.

3. Use the solubility formula:

The solubility of oxygen in water can be calculated using Henry's law:

S = k * P * C.

S is the solubility of oxygen in moles per liter (mol/L).

k is the Henry's law constant for oxygen in water at a specific temperature and salinity.  

P is the partial pressure of oxygen in atmospheres (atm).

C is the concentration of oxygen in moles per liter (mol/L).

4. Look up the Henry's law constant for oxygen at 25°C and 30 g/L salinity:

The Henry's law constant for oxygen at 25°C and 30 g/L salinity is approximately 769 L*atm/mol.

5. Calculate the solubility:  

S = (769 L*atm/mol) * (2 atm) * (1 mol/L). - S ≈ 1538 mol/L.

Therefore, the oxygen solubility at 10m depth below sea level, 25°C, and 30 g/L salinity is approximately 1538 mol/L.

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Answer:

Explanation:

Driving a car (burning gas is a chemical change) and almost all the plastics we use are made by chemical reactions of different components.

Answer:

Hydrophilic

Explanation:

A hydrophilic substance is any substance that interacts efficiently with water.

Since water is a polar solvent, a hydrophilic substance must also be polar in order to interact with water since like dissolves like in chemistry.

The fact that sugar disappears in hot water indicates that sugar is a polar hydrophilic substance because only a polar solute can dissolve in water

Based on her observation of sugar dissolving in hot water, she can properly

conclude that the sugar is hydrophilic.

A substance is said to be hydrophilic when it is able to react and dissolve in

water due to the attractive force between them. Hydrophobic substances

don't dissolve in water.

In this scenario, we were told the sugar dissolved completely in water which

means that the sugar is hydrophilic.

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…Answer:

Explanation:

(ii) In this experiment the student uses 1.70 g of the anhydrous copper(II) sulfate.

Calculate the molar enthalpy change (delta H) in kJ/mol.

Include a sign in your answer.

[Mr, of CuSO4 =

The final concentration of the solution, when water is added, would be 0.033 M.

To calculate the final concentration of a solution when water is added, we need to consider the initial concentration and the volume before dilution, as well as the volume of water added. The final concentration is determined by the ratio of the initial solute concentration to the total volume of the solution after dilution.

The formula to calculate the final concentration (Cf) is:

Cf = (Ci * Vi) / (Vi + Vw)

Where:

Cf = Final concentration

Ci = Initial concentration

Vi = Initial volume

Vw = Volume of water added

Let's consider an example. Suppose we have a solution with an initial concentration of 0.1 M and an initial volume of 100 mL. If we add 200 mL of water to this solution, we can calculate the final concentration as follows:

Cf = (0.1 M * 100 mL) / (100 mL + 200 mL)

Cf = (0.1 M * 100 mL) / 300 mL

Cf = 0.033 M

In summary, to calculate the final concentration of a solution when water is added, we use the formula Cf = (Ci * Vi) / (Vi + Vw), where Ci is the initial concentration, Vi is the initial volume, and Vw is the volume of water added. The final concentration is determined by the ratio of the initial solute concentration to the total volume of the solution after dilution.

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Answer:

câu trả lời trong hình ảnh

Answer:

a. C (s)+ 02(g)---->C02(g)

b. CO2(g) +C(s)--->2CO(g)

Explanation:

This reaction is the method of purification of some precious metals such a iron(Fe) in it's ore. a.The carbon(coke) is oxidized to carbon (IV) oxide

b. the carbon dioxide gas is reduced with the same carbon to produce carbon(II) oxide.

Potassium and calcium are rarely found as pure elements in nature but are usually combined with other substances because of their high reactivity.

Reactivity of elements refers to the ability of atoms of elements to gain or lose electrons in order to form bonds with other elements.

The most reactive elements are those of group 1, 2 and 7.

Because of their reactivity, they do not occur free in nature but in combined forma with other elements. Example is potassium.

They are very reactive as well and lose their two valence electrons easily to forms ions. Because of their reactivity, they do not occur free in nature but in combined forma with other elements. Example is calcium.

Therefore, potassium and calcium are rarely found as pure elements in nature but are usually combined with other substances because of their high reactivity.

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Answer:

D. an orbital notation of the atom

Explanation:

i took the test

Answer:

Physical

Explanation:

Because thats the answer