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Four examples of amorphous solids are: Glass, Rubber, Asphalt, and Amorphous metals.

Amorphous solids are solids that lack a long-range ordered structure and have a disordered arrangement of atoms or molecules.

Glass: Glass is a non-crystalline solid that is made by cooling a melt or solution so rapidly that the atoms or molecules do not have time to arrange themselves into a crystalline structure.

Rubber: Natural rubber and synthetic rubber are both examples of amorphous solids. Rubber is made up of long polymer chains that are tangled and disordered, giving it its characteristic elasticity and flexibility.

Asphalt: Asphalt is a mixture of bitumen and mineral aggregates that is used as a paving material for roads, parking lots, and other surfaces. Asphalt is an amorphous solid because the bitumen molecules have a disordered arrangement.

Amorphous metals: Amorphous metals, also known as metallic glasses, are a class of metals that have a disordered atomic structure. Amorphous metals are made by cooling a liquid metal at a rate of millions of degrees per second, which prevents the atoms from arranging themselves into a crystalline structure.

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Answer:

They vibrate about a fixed position

Answer:

Lo más probable es que esté haciendo la conversión de Celsius a Kelvin

En ciencia, la unidad Kelvin se usa para medir la temperatura

La fórmula para Celsius a Kelvin es C + 273 = K

Explanation:

me das  coronita

The reactants and products parts of a chemical equation must be balanced.

A chemical reaction is said to be balanced when the number of atoms of each element on both sides of the equation are the same.

A chemical equation consists of the reactants and the products, hence, the number of atoms on both sides must be equal for the equation to be balanced.

Therefore, the reactants and products parts of a chemical equation must be balanced.

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Polypeptides over 100 amino acids long are generally classified as proteins.  A polypeptide is a polymer of amino acids, and it is formed by peptide bonds between the amino group of one amino acid and the carboxyl group of another amino acid.

The sequence of amino acids in a polypeptide determines the final protein's shape, size, and function. The shape of the protein is critical to its function, as it determines how it interacts with other molecules in the cell.

Some examples of protein categories include enzymes, structural proteins, transport proteins, and regulatory proteins. In conclusion, polypeptides over 100 amino acids long are classified as proteins, which are macromolecules made up of one or more polypeptides.

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Answer:

Explanation:

please mark as brain and like please

Andrew should prepare 2 liters of solution to make a 0.250 M solution from 0.50 moles of calcium chloride, CaCl2.

To calculate the volume of solution in liters that Andrew should prepare, we need to use the formula:

Molarity (M) = moles of solute / volume of solution (in liters)

Given that the molarity (M) is 0.250 M and the moles of solute is 0.50 moles, we can rearrange the formula to solve for the volume of solution:
Volume of solution (in liters) = moles of solute / Molarity

Substituting the given values:
Volume of solution (in liters) = 0.50 moles / 0.250 M
Volume of solution (in liters) = 2 L

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It is used for cleaning and other use. Higher pH means stronger base.

The volume of Oxygen at STP required : 251.25 L

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.

Reaction(combustion) :

2C₂H₂(g)+5O₂(g)⇒4CO₂(g)+2H₂O(g)

mol C₂H₂ :

\(\tt \dfrac{100.5}{22.4}=4.49\)

mol ratio C₂H₂ : O₂ = 2 : 5, so mol O₂ :

\(\tt \dfrac{5}{2}\times 4.49=11.23\)

volume  O₂ at STP :

\(\tt 11.23\times 22.4=251.55~L\)

Or you can use Avogadro's hypothesis :

In the same temperature and pressure, in the same volume conditions, the gas contains the same number of molecules  

So the ratio of gas volume will be equal to the ratio of gas moles  :

\(\tt \dfrac{V_1}{V_2}=\dfrac{n_1}{n_2}\\\\\dfrac{100.5}{V_2}=\dfrac{2}{5}\\\\V_2=\dfrac{100.5\times 5}{2}=251.25~L\)

Answer:

852000 J

Explanation:

The following data were obtained from the question:

Mass (M) = 600 g

Change in temperature (ΔT) = 2 °C

Specific heat capacity (C) = 710 J/g℃

Heat transfered (Q) =?

Thus, we can obtain the the heat transfered to the diamond by using the following formula:

Q = MCΔT

Q = 600 × 710 × 2

Q = 852000 J

Therefore, the energy transfered to the diamond by heat is 852000 J

Answer:

Three half lives corresponds to (12)3 . So a 18 quantity of the original isotope is retained. And the percentage of quantity of a radioactive material that remains after 5 half-lives will be . ∴NN0×100=10032=3.125.

475.021, f.s., refers to the Florida Statute (f.s.) for driver's license suspensions and revocations. This particular statute deals with the suspension of licenses for drivers who fail to pay court fines, costs, and fees.

The statute states that failure to pay the required court fees within 30 days will result in the suspension of the driver's license.

After 90 days, the suspension becomes permanent until the fees are paid. In summary, the mysterious glyph is trying to tell you about the legal statute in Florida regarding the suspension of driver's licenses for non-payment of court fees, fines, and costs.

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Fusion Nuclear fusion is a response wherein two or greater atomic nuclei are blended to shape one or greater different atomic nuclei and subatomic debris. It

1. involves the splitting of nuclei

2. releases large amounts of energy

4. releases radiation as a waste product

5. occurs in nuclear power plants and is used to generate electricity.

Fusion reactions power the sun and other stars. In a fusion reaction,  light nuclei merge to form a single heavier nucleus. The technique releases electricity due to the fact the total mass of the resulting unmarried nucleus is much less than the mass of the two unique nuclei. The leftover mass becomes energy. The difference in mass between the reactants and merchandise is manifested as either the discharge or absorption of power.

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Answer:

2, 5, 6

Explanation:

edge 2023

Answer:

B

CuO

H2

Explanation:

hydrogen will oxidized to form water

Copper(II) oxide reacts with hydrogen.

\(CuO + H_2\) → \(Cu + H_2O\)

Oxidising agent - \(Cuo\)

Reducing agent - \(H_2\)

A chemical reaction that takes place between an oxidizing substance and a reducing substance.

The oxidizing substance loses electrons in the reaction, and the reducing substance gains electrons.

In the reaction  \(CuO + H_2\) → \(Cu + H_2O\)  

\(Cuo\) is the oxidising agent and  \(H_2\) is the reducing agent because \(Cuo\)  is oxidising  \(H_2\) and \(H_2\) is the reducing agent because it is removing oxygen from \(Cuo\).

Hence, option B is correct.

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The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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The concentration of calcium hydroxide (in mol/L or g/L), I would be able to assist you in calculating the amount of calcium hydroxide present in the solution.

To determine the grams of calcium hydroxide (Ca(OH)2) in the solution, we need to use the pH and volume of the solution. However, we also require additional information about the concentration of calcium hydroxide in order to make a precise calculation.

The pH of a solution alone does not provide sufficient information to determine the concentration of calcium hydroxide. The pH is a measure of the concentration of hydrogen ions (H+) in a solution, while calcium hydroxide dissociates to produce hydroxide ions (OH-). Without the concentration of calcium hydroxide, we cannot directly calculate the grams of calcium hydroxide in the solution.

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Answer:

0.241 M

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

HBr + NaOH —> NaBr + H₂O

From the balanced equation above,

The mole ratio of acid, HBr (nₐ) = 1

The mole ratio of base, NaOH (n₆) = 1

Finally, we shall determine the concentration of the NaOH solution. This can be obtained as follow:

Volume of base, NaOH (V₆) = 20 mL

Volume of acid, HBr (Vₐ) = 24.1 mL

Concentration of acid, HBr (Cₐ) = 0.2 M

Concentration of base, NaOH (C₆) =?

CₐVₐ / C₆V₆ = nₐ/n₆

0.2 × 24.1 / C₆ × 20 = 1/1

4.82 / C₆ × 20 = 1

Cross multiply

C₆ × 20 = 4.82

Divide both side by 20

C₆ = 4.82 / 20

C₆ = 0.241 M

Therefore, the concentration of the NaOH solution is 0.241 M

Answer:

b

Explanation:

b because it's a physical change

Answer:

silicon and germanium.

Explanation :

The passage states that at extreme pressures an elemental solid assumes the structure and bonding characteristics of a heavier element in the same column of the periodic table. The structure and bonding of diamond, which is a form of carbon, would therefore be most like other elements in the same group of the periodic table as carbon. This group contains silicon and germanium.

Two solitary sigma bonds are visible in the Lewis structure between the hydrogen and oxygen atoms.

The octet rule is a theory that describes how atoms share electrons so that each atom has eight electrons in its outer shell. This idea is the foundation of a Lewis structure. An oxygen atom, as an illustration, has six electrons in its outer shell.

The entire molecule's electron density is concentrated only around the core C in the CCl4 Lewis structure. Two nitrogen atoms are connected by a triple bond in the N2 Lewis structure.

In the reaction described above, PH3 is acting as a Lewis base because of the single electron on the P atom.

A double bond exists between two oxygen atoms in the Lewis structure of O2. Oxygen atoms must form two bonds in order to comply with the octet rule. The oxygen (red) and hydrogen (white) atoms are held together by powerful connections known as covalent bonds.

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The substance in the image above would be classified as a mixture of elements (option E).

A compound is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

On the other hand, a mixture is made when two or more substances are combined, but they are not combined chemically.

According to this question, an image is shown with two different substances or elements as distinguished by coloration (white and purple). These elements are combined but not chemically bonded, hence, is a mixture.

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The carbon-carbon bond in C2H2 contains 1 σ (sigma) and 2 π (pi) bonds.

In C2H2, which is acetylene or ethyne, the carbon atoms are connected by a triple bond. A triple bond consists of one sigma (σ) bond and two pi (π) bonds. The sigma bond is formed by the end-to-end overlap of atomic orbitals, while the pi bonds are formed by the side-by-side overlap of atomic orbitals.

To understand the bonding in C2H2, understand the hybridization of carbon atoms. In C2H2, each carbon atom is sp hybridized. The two sp hybrid orbitals form a linear arrangement around the carbon atom. One of the hybrid orbitals forms a sigma bond with a hydrogen atom, and the other forms a sigma bond with the adjacent carbon atom. The remaining two unhybridized p orbitals on each carbon atom are perpendicular to each other and to the axis of the molecule. These p orbitals overlap side-by-side to form two pi bonds between the carbon atoms. Therefore, the carbon-carbon bond in C2H2 contains 1 σ (sigma) bond and 2 π (pi) bonds.

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Answer:

B. reflection

Explanation:

Rigid transformations are methods involved in changing the dimensions or orientation of a given figure. The methods are; dilation, rotation, translation and reflection.

Reflection is the process in which a given figure is turned or flipped with respect to a point or line of reference.

In the given question,

ΔDEF ≅ ΔD'EF' (Side-Side-Side congruence property)

This implies that ΔDEF was reflected about point E to produce ΔD'EF'. Thus the required rigid transformation is reflection.

Answer:

Is C - Rotation

Explanation:

I have right on my test

LiOH is the most likely identity of this base because it has the highest concentration of hydroxide ions.

Chemical compounds with the potential to neutralize acids are known as bases. A pH value higher than 7 indicates the presence of bases, which contain more hydroxide (OH-) ions than hydrogen (H+). Bases, which come in both organic and inorganic forms, are frequently discovered in items used on a daily basis including cleaning supplies, soaps, and shampoos. Ammonia, potassium hydroxide, and sodium hydroxide are a few typical examples of bases (NH3). Bases play a crucial role in a variety of chemical reactions and processes, such as the creation of fertilizers, the synthesis of medications, and the treatment of wastewater. Along with being used in medicine to neutralize stomach acid, they are also employed in laboratories to change the pH of liquids.

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Answer:

False

Explanation:

Answer:

false

Explanation:

yes

Answer:

Because.in theory, it's impossible for philosophers (Greeks) don't have the proper equipment and also they don't have enough facts to back it up

Explanation:

Hope this helps

Let's analyze each characteristic in relation to the processes of fission and fusion:

a. Very high temperatures are required to initiate the reaction.

b. Less radioactive waste is produced.

c. Hydrogen nuclei are the reactants.

d. Large amounts of energy are released when the nuclear reaction occurs.

Summarizing the characteristics for fission and fusion:

Fission:

Fusion:

Based on these characteristics, we can conclude that:

a. Very high temperatures are characteristic of fusion.

b. Less radioactive waste being produced is characteristic of fusion.

c. Hydrogen nuclei as reactants are characteristic of fusion.

d. Large amounts of energy being released are characteristic of both fission and fusion.

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Answer:

1=

25000 ml

2=

300 mm

3=

350m

Drip irrigation is the ideal irrigation system for use with vegetable gardens, flowers, trees, and other watering needs. A drip irrigation system for gardens helps you save time, money, and water.

In those pots lacking drainage holes, a layer of stones is used as a form of drainage layer. By using this method, surplus water might go from the soil and, consequently, the roots of your plant, into the area with the pebbles.

A drip system that has been set up correctly will operate automatically at a certain time of day for a specific duration.

Therefore, a) use the water to wash the car. b) Often used for transpiration to create a suction force, creating a transpiration pull. c) Ayan values water, conserving it and giving the most efficient and optimum function.

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