The motion of the rock is called ______ currents
​

C. flow under dense and become more thick.

A substance that is tightly packed or has a high density.

The term "density" refers to the relationship between a substance's mass and the volume it takes up in space (volume). The mass, size, and arrangement of an object's atoms influence its density. The ratio of a substance's mass to its volume is said to be its density, or D.

Because it enables us to predict which compounds will float and which will sink in a liquid, density is a crucial notion. An object will frequently float as long as its density is less than that of the liquid.

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The heat required is to convert 75.0 g of C₂Cl₃F₃ from a liquid at 13.60 ∘C to a gas at 76.00 ∘C is 17.55 kJ.

To solve this problem, we need to consider the different steps involved in the process of converting 75.0 g of C₂Cl₃F₃ from a liquid at 13.60 ∘C to a gas at 76.00 ∘C;

Heating the liquid C₂Cl₃F₃ from 13.60 ∘C to its boiling point at 47.6 ∘C, Vaporizing the liquid C₂Cl₃F₃ at its boiling point, and heating the resulting gas from 47.6 ∘C to 76.00 ∘C

Now, we can use the equations to calculate the heat required for each step;

q₁ = m × C₁ × ΔT₁

where q₁ is the heat required, m is the mass of C₂Cl₃F₃, C₁ is the specific heat of C₂Cl₃F₃(l), and ΔT₁ is the temperature change from 13.60 ∘C to 47.6 ∘C.

q₁ = 75.0 g × 0.91 J/g⋅K × (47.6 ∘C - 13.60 ∘C)

= 2466 J

q₂ = n × ΔHvap

where q₂ is the heat required, n is the number of moles of C₂Cl₃F₃, and ΔHvap is the heat of vaporization of C₂Cl₃F₃.

n = m/M

= 75.0 g / 137.37 g/mol

= 0.5464 mol

q₂ = 0.5464 mol × 27.49 kJ/mol

= 15.038 kJ

q₃ = m × C₂ × ΔT₂

where q₃ is the heat required, m is the mass of C₂Cl₃F₃(g), C₂ is the specific heat of C₂Cl₃F₃(g), and ΔT₂ is the temperature change from 47.6 ∘C to 76.00 ∘C.

m = n × M

= 0.5464 mol × 137.37 g/mol

= 75.0 g

q₃ = 75.0 g × 0.67 J/g⋅K × (76.00 ∘C - 47.6 ∘C)

= 1446 J

The total heat required is the sum of the heats required for each step;

\(q_{total}\)= q₁ + q₂ + q₃

= 2466 J + 15.038 kJ + 1446 J

= 17.55 kJ

Therefore, the total heat required is 17.55 kJ.

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Answer:

In Parts I and II of the lab, what happened to the electrons of each element to produce the different colors of light? ... When heat was added to the elements, the electrons absorbs the energy and moves to its excited state. Once the electron starts to fall back to a lower orbit, it emits energy in the form of light.

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Explanation:

Answer:

C) one magnesium and one oxygen

Answer: Ionic Compound

Explanation:

An ionic compound is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element or the metal and the element which accepts the electrons is known as electronegative element or non metal.

A covalent compound is formed when an element shares its valence electron with another element. This bond is formed between two non metals.

Mercury flouride contain ionic bonds as it is made up of mercury metal and fllourine non metal.

The concept ideal gas equation is used here to determine the volume of the carbondioxide. Combustion reactions are generally highly exothermic reactions. The volume of CO₂ is

A combustion is a chemical reaction in which a fuel undergoes oxidation as a result of the reaction with an oxidizing agent which causes the release of energy in the form of heat.

15.0 °C = 288 K

The ideal gas equation is:

PV = nRT

V = nRT / P

V = 354 × 0.0821 × 288 / 0.995 = 8412.3 L

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Answer:

7.50 L

Explanation:

The balloon has a volume of 1.20 L (V₁) when the pressure at the sea floor is 6.25 atm (P₁). When it reaches the surface, the pressure is that of the atmosphere, that is, 1.00 atm (P₂). If we consider the gas to behave as an ideal gas and the temperature to be constant, we can calculate the final volume (V₂) using Boyle's law.

P₁ × V₁ = P₂ × V₂

V₂ = P₁ × V₁ / P₂

V₂ = 6.25 atm × 1.20 L / 1.00 atm

V₂ = 7.50 L

Answer:

Hi!

So, a homogeneous mixture is when the parts that make up the mixture are all mixed in perfectly evenly, so they're only appearing as one uniform substance.

In a heterogeneous mixture, the pieces are not evenly mixed. A pizza has separate parts, like the crust and toppings, so it's a heterogeneous mixture.    

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97. The incorrect representation for a neutral atom is 36Li

To determine the correct representation for a neutral atom, we need to consider the atomic number (Z) and mass number (A) of the element. The atomic number represents the number of protons in the nucleus, while the mass number represents the sum of protons and neutrons.

Let's analyze the given representations:

36Li:

This representation suggests that the element is lithium (Li) with a mass number of 36, which is incorrect. The correct mass number for lithium is approximately 6.94.

613C:

This representation suggests that the element is carbon (C) with a mass number of 13, which is correct. Carbon has different isotopes, and 13C represents one of its stable isotopes.

3063Cu:

This representation suggests that the element is copper (Cu) with a mass number of 63, which is correct. Copper has different isotopes, and 63Cu represents one of its stable isotopes.

1530P:

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97.

Therefore, the incorrect representation for a neutral atom is 36Li, as it does not match the known properties of lithium.

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Answer:

Acid : H2O

Base : O2

Spectator Ions : K+

Explanation:

The equilibrium concentrations of A, B, and C at equilibrium are:

The equilibrium concentrations of A, B, and C are calculated from the equilibrium equation below as follows:

Kc = [C]⁴ /  [A]³ * [B]²  -----(1)

Kc = 1.33 * 10

The initial concentrations of A and B are as follows:

A = 1.80 mol / 1 L = 1.8 M

B = 3.50 mol / 1 L = 3.50 M

The concentrations at equilibrium are given by the ICE table below:

   3 A (g)   +    2 B (g) ⇄ 4 C (g)

I   1.80            3.50           0

C  - 3x           - 2x           + 4x

E  1.80 - 3x   3.50 - 2x    4x

Substituting the concentrations at equilibrium into the equilibrium equation above

1.33 * 10³¹  = 4x⁴ / (1.80 - 3x)³ * (3.50 - 2x)²

x = 0.56

Therefore;

the concentration of A = 1.80 - 3 * 0.56

the concentration of A = 0.12 M

the concentration of B = 3.50 - 2 * 0.56

the concentration of B = 2.38 M

the concentration of C = 4 × 0.56

the concentration of C = 2.24 M

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The kinetic-molecular theory's true assertions are as follows:

If both containers' temperatures are the same, container A will have a higher pressure than container B.

Container A has a lower temperature than container B if the pressure in both containers is equal.

The molecules that make up a gas are always moving randomly, colliding with one another and the container walls, according to the kinetic molecular hypothesis. Remember that high temperature and low pressure are the only conditions in which perfect gases can exist.

The kinetic-molecular theory's true assertions are as follows:

If both containers' temperatures are the same, container A will have a higher pressure than container B.

If both are under pressure

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1. Oxygen is a reactant needed for all combustion reactions.

2. The products of the complete combustion reaction of a hydrocarbon (compound containing carbon and hydrogen) are carbon dioxide and water.

3. Complete combustion takes place if the quantity of oxygen is sufficient.

4. Incomplete combustion takes place if the quantity of oxygen is insufficient.

5. Combustion is a exothermic change.

6. In a combustion reaction, oxygen is the oxidizer and the substance which burns is the fuel.

7. The lower the kindling temperature, the easier is the combustion.

8. If a substance burns at room temperature in the absence of a flame the combustion is said to be spontaneous.

9. Combustion reactions are accompanied by heat and light effect.

10. Combustion reactions don't take place at the same rate.

1)Oxygen is a reactant needed for all combustion reactions. Combustion reactions are chemical reactions that involve the rapid combination of a fuel (usually a hydrocarbon) with oxygen gas. Oxygen acts as the oxidizing agent, providing the necessary component for the reaction to occur. Without oxygen, combustion cannot take place.

2)The products of the complete combustion reaction of a hydrocarbon are carbon dioxide and water. In the presence of sufficient oxygen, hydrocarbons undergo complete combustion, resulting in the production of carbon dioxide (\(CO_2\)) and water (\(H_2O\)). This reaction releases a significant amount of energy in the form of heat and light.

3)Complete combustion takes place if the quantity of oxygen is sufficient. Complete combustion occurs when there is an adequate supply of oxygen available for the reaction. In this case, the fuel (hydrocarbon) reacts completely with oxygen, resulting in the formation of carbon dioxide and water as the only products

4)Incomplete combustion takes place if the quantity of oxygen is limited. In situations where there is insufficient oxygen available, incomplete combustion occurs. This leads to the formation of products such as carbon monoxide (CO) and carbon (soot) in addition to carbon dioxide and water. Incomplete combustion is less efficient and can release harmful pollutants into the environment.

5)Combustion is a chemical change. Combustion is classified as a chemical change because it involves the breaking and forming of chemical bonds between atoms and molecules. The reactants (fuel and oxygen) undergo a chemical reaction to produce new substances (products) with different properties, such as carbon dioxide and water. Heat and light are also typically released during combustion.

6)In a combustion reaction, oxygen is the oxidizer, and the substance that burns is the fuel or combustible material. Oxygen acts as the oxidizing agent, meaning it accepts electrons from the fuel, leading to the oxidation (burning) of the fuel. The fuel provides the carbon and hydrogen atoms that combine with oxygen to form carbon dioxide and water.

7)The lower the kindling temperature, the easier the combustion. The kindling temperature is the minimum temperature at which a substance can ignite and sustain combustion. If the kindling temperature is lower, it means that less heat is required to initiate the combustion process. Substances with lower kindling temperatures are more prone to catching fire and sustaining combustion.

8)If a substance burns at room temperature in the absence of a flame, the combustion is said to be spontaneous. Spontaneous combustion refers to the ignition and burning of a substance without the need for an external ignition source, such as a flame. It occurs when certain materials, under specific conditions, undergo self-heating and eventually reach their ignition temperature, leading to combustion.

9)Combustion reactions are accompanied by heat and light effects. Combustion reactions are highly exothermic, meaning they release a significant amount of heat energy. This energy is released in the form of heat and light, resulting in flames or glowing embers during combustion.

10)Combustion reactions don't take place at the same rate for all substances. The rate of combustion can vary depending on factors such as the nature of the fuel, the availability of oxygen, temperature, and pressure. Different substances have different combustion rates due to variations in their chemical properties and reactivity.

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Answer:

Preventing erosion – Land Reclamation

Protecting nesting areas – Protecting Biodiversity

Preventing littering – Land Reclamation

Preventing habitat disruption – Protecting Biodiversity

Protecting native species – Protecting Biodiversity

Preventing contamination of soil – Land Reclamation

Explanation:

I really hope I'm right! I tried my hardest, please give me brainliest :)

have a good day!

Answer:

c: heat and erosine

Explanation:

Answer:

Explanation:The volume of the box is 8.6 × 10³ in².

V = lwh = 26 in × 18.4 in × 17.92 in = 8.6 × 10³ in²

Note: The answer can have only two significant figures because that is all you gave for the length of the box.

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Explanation:

it is negative acceleration

Answer:

negative acceleration

Explanation:

The number of breadths supplied by the 200 atm scuba tanks, found using Boyle's law, taking the air as an ideal gas are as follows;

First tank with 14.2 L volume delivers 1,893.\(\overline 3\) breadths of air

The second tank with 11.4 L volume, delivers 1,520 breadths of air

An ideal gas is a gas that is not subject to particle to particle interactions, and consists of many particles

The given parameters are;

Pressure air in the two scuba tanks, P₁ = 200 atm

Volume of air in the first tank, V₁₁ = 14.2 L

Volume of air in the second scuba tank, V₁₂ = 11.4 L

Volume of air delivered for each breadth, Vₐ = 1.5 L

Pressure of air delivered by the tank regulator, P₂ = 1 atm.

According to Boyle's law, at constant temperature, the pressure  of a given mass of gas is inversely proportional to its volume

Mathematically, we have;

P ∝ V

P₁·V₁ = P₂·V₂

The volume occupied by a given number of breadths, n, Vₙ = Vₐ × n

According to Boyle's law, the number of breadths supplied by the first tank is therefore;

P₁·V₁₁ = P₂·Vₐ·n

Which gives;

\(n = \dfrac{P_1\cdot V_{11}}{P_2 \cdot V_a}\)

Therefore;

\(n = \dfrac{200\times 14.2}{1 \times 1.5}\approx 1893.\overline 3\)

The number of breadths supplied by the first tank is 1,893.\(\overline 3\) breadths

Similarly, the number of breadths supplied by the second tank is given by the formula;

P₁·V₁₂ = P₂·Vₐ·n

\(n = \dfrac{P_1\cdot V_{12}}{P_2 \cdot V_a}\)

\(n = \dfrac{200\times 11.4}{1 \times 1.5}\approx 1893.\overline 3 = 1,520\)

The number of breadths supplied by the second tank is 1,520 breadths

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Explanation:

1. atom B has more neutrons than atom A

2. the name for this is Isotopes

3.atom A is lighter

Answer:

true?

Explanation:

Phosphatidylserine is a type of phospholipid that is mainly found in cell membranes. Its structure is made up of two fatty acid chains, a phosphate group, a serine molecule, and a glycerol molecule.

The fatty acid chains are hydrophobic, meaning they repel water, while the phosphate group and serine molecule are hydrophilic, meaning they attract water.

The glycerol molecule acts as a bridge that connects the two fatty acid chains to the phosphate group and serine molecule.
The structure of phosphatidylserine is important for its function in the cell membrane.

Because of the hydrophobic and hydrophilic components of its structure, phosphatidylserine is able to form a lipid bilayer, which is a barrier that separates the inside of the cell from the outside environment.

The hydrophilic heads of the phosphatidylserine molecules face outward and interact with water, while the hydrophobic tails face inward and repel water.
Phosphatidylserine also plays a role in cell signaling and apoptosis, which is programmed cell death.

It acts as a signaling molecule by binding to proteins that are involved in cellular pathways.

In addition, phosphatidylserine is translocated to the outer leaflet of the cell membrane during apoptosis, which signals to immune cells that the cell is ready to be removed.
In conclusion, the structure of phosphatidylserine is made up of two fatty acid chains, a phosphate group, a serine molecule, and a glycerol molecule. Its hydrophobic and hydrophilic components allow it to form a lipid bilayer in cell membranes, and it also plays a role in cell signaling and apoptosis.

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If there is sufficient fossil fuel, we will cope by utilizing it in a responsible and sustainable manner while actively transitioning towards alternative energy sources. Coping with the abundance of fossil fuels requires a multi-faceted approach that considers environmental, economic, and social aspects.

To cope effectively, we can:

1. Promote energy efficiency: Invest in technologies and practices that minimize energy waste and maximize efficiency in all sectors, including transportation, industries, and buildings.

2. Transition to renewable energy: Increase the adoption of renewable energy sources such as solar, wind, hydro, and geothermal power. This reduces our reliance on fossil fuels and mitigates environmental impacts.

3. Implement policy measures: Enact policies that incentivize the use of renewable energy, discourage excessive fossil fuel consumption, and promote sustainable practices.

4. Invest in research and development: Support and fund research efforts aimed at developing cleaner and more sustainable energy technologies, such as advanced battery storage, hydrogen fuel cells, and carbon capture and storage.

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Honesty leads to a fulfilling, free life. Honesty is not just about telling the truth. It's about being real with yourself and others about who you are, what you want and what you need to live your most authentic life. ... Honesty sharpens our perception and allows us to observe everything around us with clarity.

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Answer:

d. 4.

Explanation:

Hello,

In this case, the required number on milligrams is:

\(0.007502x10^{-26}g*\frac{1000mg}{1g}=7.502x10^{-26}mg\)

It means that it has four significant figures which are counted for 7, 5, 0 and 2, considering that zero as it is to the right of first nonzero digit (7).

Regards.

Answer: Atoms of carbon and hydrogen

Explanation:

Answer:

Electrons

Explanation:

Atoms both have negative and positive particles

Protons are positive

Electrons are negative

Neutrons are neutral

Nuclei is where you find both neutrons and protons in an atom

Answer:

c electrons

Explanation:

Answer:

The reaction is a double displacement reaction

Explanation:

Let us consider the reaction equation of the reaction between ammonium oxalate and lithium acetate.

(NH4)2C2O4(aq) +2 CH3COOLi(aq) -------> 2NH4CH3CO2(aq) + Li2C2O4(s)

This is a displacement reaction. A double displacement reaction is a type of reaction in which two reactants exchange their ions to form two new compounds. Double displacement reactions usually lead to the formation of a solid product which is also called a precipitate.

The general form of a Double displacement reaction is of the format:

AB + CD → AD + CB

Where A,B,C and D represents different ions respectively.

A double displacement reaction can also be referred to as salt metathesis reaction, double replacement reaction, exchange reaction, or a double decomposition reaction, although the latter term is more strictly used when one or more of the reactants does not dissolve in the solvent.

Stars form in large, dense regions of gas and dust known as molecular clouds. These clouds are located primarily in the spiral arms of galaxies, where they are exposed to intense radiation from nearby stars. As the gas and dust in these clouds are subjected to this radiation, they begin to collapse under their own gravity. As the collapse continues, the cloud becomes denser and denser, and eventually a protostar forms at its center. Over time, this protostar continues to contract and heat up, eventually reaching the point where nuclear fusion can begin in its core. At this point, the protostar becomes a fully-fledged star, and the process of star formation is complete.

TL;DR: Within the clouds of dust and scattered throughout most galaxies.