Do the following ! I'LL MARK THE BRAINLEST!
ITS SCIENCE!

Answer:

reacts in air to form a green layer

Explanation:

Properties of substances can be physical or chemical. A physical property is that which does not affect the chemical composition of the substance(s) involved e.g melting point, boiling point, color, state of matter as depicted for copper (Cu) in this question.

On the other hand, chemical property of a substance are those properties that alters or affects the chemical composition of the substance. In other words, they are features that can be observed after the substance has undergone a chemical reaction. In this question, COPPER REACTING IN AIR TO FORM A GREEN LAYER IS A TYPE OF CHEMICAL PROPERTY because a chemical reaction has occured with the evidence of the green layer formation.

Answer:

393 mL

Explanation:

Recall the ideal gas law:

\(\displaystyle PV = nRT\)

Because only pressure and volume are changing and everything else remains constant, we have that:
\(\displaystyle P_1V_1 = k = P_2V_2\)

Where k is some constant.

Hence, substitute and solve:

\(\displaystyle \displaystyle \begin{aligned} (753\text{ torr})(513\text{ mL}) & = (982\text{ torr})V_2 \\ \\ V_2 & = 393\text{ mL} \end{aligned}\)

Hence, the new volume is 393 mL.

Check: because volume decreases with an increase in pressure, our answer fits within the context of the problem.

The Bragg angle of the (101) planes decreases with the amount of shear.

When the material with a tetragonal crystal structure undergoes shear, the angle between the [001] and [100] directions changes from 90° to 60°, with a shear vector along [100]. To analyze the change in the Bragg angle of the (101) planes under this shear, we need to consider the effect of shear on the lattice parameters and the orientation of the planes.

The lattice parameters {2, 2, 4, 90°, 90°, 90°} represent the dimensions and angles of the tetragonal crystal structure. The (101) planes are equivalent to the (101) planes at zero shear. However, due to the shearing process, the lattice parameters change. As the shear vector is along [100], the length along the [100] direction decreases, while the length along the [001] direction remains unchanged.

The Bragg angle is determined by the relationship between the lattice spacing of the planes and the incident X-ray wavelength. As the lattice parameters change, the lattice spacing of the (101) planes also changes. The decrease in the length along the [100] direction leads to a decrease in the lattice spacing of the (101) planes, resulting in a decrease in the Bragg angle.

To plot the Bragg angle vs. shear angle, we need to vary the shear angle and calculate the corresponding Bragg angle for each shear angle. The shear angle represents the change in the angle between the [001] and [100] directions, and the Bragg angle is calculated based on the lattice spacing and the incident X-ray wavelength.

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The EPA standard for the amount of arsenic permitted in drinking water is 10 ug per liter.

Option C is correct.

Arsenic is a dangerous substance that can be found in groundwater that has been contaminated by natural mineral deposits or human activities.Arsenic is a heavy metal that occurs naturally in rocks, soil, and minerals such as copper and lead. Arsenic is usually present in tiny quantities in groundwater and surface water.

It's an odorless and tasteless compound that's toxic in high quantities. Inorganic arsenic compounds are more poisonous than organic arsenic compounds, which are found in plants and animals. Chronic exposure to arsenic has been linked to skin, bladder, and lung cancer, as well as other diseases, according to the World Health Organization (WHO). The EPA standard for arsenic in drinking water is 10 ug per liter.

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Answer:

I would say C.)

Explanation:

Freezing and condensation are both ways that heat is let out from an object.

The number of Unsaturation Number (UN) or Double-Bond Equivalent in the given formula is 6.  Using mass spectrometry, infrared spectroscopy, and qualitative inspection.

Double bond equivalents = C - X/2 - H/2 + N/2 + 1 = C - X/2 - H/2 + N/2 + 1

Double bond equivalent = 9 - 8 / 2 + 1

Double bond equivalents = 9 - 4 +1

Double bond equivalents = 6

Ring, benzene ring, aldehyde, ketone, alkene, alkyne are the functional groups. There is one carbon atom and one hydrogen atom. Here is the seventh number. Seven and six are equal, as are three and three. The DB will not be affected by the presence of oxygen. Seven plus one equals six divided by two.

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The third law of thermodynamics describes the entropy of a: solid.

The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.

The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.

In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.

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Answer:

See explanation

Explanation:

Electronegativity is the ability of an atom in a compound to attract the shared electron pair of a bond towards itself.

Electronegativity is one of the periodic trends. It decreases down the group and increases across the period. This implies that as you move from left to right in the periodic table, atoms of elements become more electronegative.

Remember also that non-metallic property increases from left to right in the periodic table. This means that as you move from left to right, metallic properties such as thermal conduction decreases.

It then follows that as electronegativity increases, electrical conductivity decreases from left to right in the periodic table.

Quick clay can move like a liquid when vibration or shaking separates the water-coated particles.

Quick clay, also known as Leda clay, is a type of clay that has a unique behavior. When the clay is disturbed or shaken, the water-coated particles lose their bonding strength and the clay liquefies. This can cause landslides and other types of soil failures, which can be dangerous to people and property.

Quick clay is found in areas of Canada, Norway, Sweden, and other regions with a history of glaciation. It is formed from the deposition of clay particles by glacial meltwater, which creates a highly sensitive deposit. Quick clay is a type of clay and not sand, and its behavior is different from that of other types of clay due to its unique physical properties.

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The four sources of energy are : solar energy, coal energy, nuclear energy, hydroelectric energy

disadvantage and advantage of each source are:

Solar energy:

Coal energy:

Nuclear energy:

Hydroelectric energy:

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Answer:

Avogadro's Law

Explanation:

The amount of moles is directly proportional to the volume of the gas under constant temperature and pressure. That is the statement of Avogadro's law. The equation is:

V1n2 = V2n1

Where V is volume and n are moles of 1, initial state and 2, final state of the gas

That means, right option is:

The complete hydrolysis of a protein produces a mixture of free amino acids.

Acids are molecules or ions that can donate protons, known as Bronsted-Lowry acids, or form covalent bonds with electron pairs, known as Lewis acids. The first category of acids is proton donors or Brønsted-Lowry acids.

No oil is either an acid or a base. Neutral. Oil is a neutral, nonpolar chemical. That is, it is a viscous liquid at room temperature. It is immiscible with water, but soluble in alcohol and ether. Whole eggs are relatively pH neutral, but egg whites are one of the few foods that are naturally alkaline, with an initial pH of as high as 7.6 when eggs are laid, but the alkalinity increases as eggs age and reach increases. the pH of 9.2.

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The boiling point of a solution is related to the molality of the solution (the number of moles of solute per kilogram of solvent) by the equation: The Correct option is \(Na_{3} PO_{4}\)

ΔTb = Kb x molality

where ΔTb is the change in boiling point, Kb is the boiling point elevation constant, and molality is the molality of the solution.

We can calculate the molality of compound X using the given information:

ΔTb = Tb - Tb°

where Tb is the boiling point of the solution and Tb° is the boiling point of the pure solvent, which is 100°C for water at standard pressure.

ΔTb = 101.4°C - 100°C = 1.4°C

molality = ΔTb / Kb

For water, Kb = 0.52°C/m, so:

molality = 1.4°C / 0.52°C/m = 2.7 m

Now we need to identify which of the given compounds could form a 1.35 m solution with water, resulting in a boiling point elevation of 1.4°C.

ΔTb = Kb x molality = 0.52°C/m x 2.7 m = 1.4°C

Therefore, the compound that could be X is \(Na_{3} PO_{4}\).

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Answer:

Diagram Z

Explanation:

A cell placed into a hypotonic solution will swell and expand until it eventually burst through a process known as cytolysis.

Answer:

Diagram Y

Explanation:

Osmosis is the passive movement of water molecules across (into or out of) a cell membrane. "Passive" means that the process occurs automatically without the need for chemical energy.

In the diagrams above, a plant cell is shown as it would appear in a solution with a solute concentration more than its own (X), a solution with a solute concentration equal to its own (Y), and a solution with a solute concentration less than it own (Z). The movement of water is toward the area of more solute concentration (and therefore less water concentration).

The answer, then, is Diagram Y.

(Trust me, I just did it)

Answer: The partial pressure of neon in the mixture is 263 mm Hg

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

\(p_{total}=p_{He}+p_{N_2}+p_{Ne}\)

Given : \(p_{total}\) =total pressure of gases = 815 mm Hg

\(p_{He}\) = partial pressure of helium = 201 mm Hg

\(p_{N_2}\) = partial pressure of nitrogen = 351 mm Hg

\(p_{Ne}\) = partial pressure of Neon = ?

putting in the values we get:

\(815mm Hg=201 mm Hg+351 mm Hg+p_{Ne}\)  

\(p_{Ne}=263mmHg\)

The partial pressure of neon in the mixture is 263 mm Hg

Starch, glycogen, proteins, and fats are all macromolecules that can be broken down and used as a source of energy for cellular respiration.

Each of these molecules enters the process of cellular respiration at different stages and through different pathways.

Starch: Starch is a complex carbohydrate made up of many glucose molecules linked together. In order to enter the process of cellular respiration, starch must first be broken down into glucose molecules. This occurs through the process of hydrolysis, in which water molecules are used to break the bonds between the glucose molecules. Once the glucose molecules have been released, they can enter glycolysis, the first stage of cellular respiration.

Glycogen: Like starch, glycogen is a complex carbohydrate made up of many glucose molecules linked together. Glycogen is stored in the liver and muscle tissue and can be broken down into glucose molecules when needed. The process of breaking down glycogen into glucose molecules is called glycogenolysis. Once the glucose molecules have been released, they can enter glycolysis and continue through the rest of cellular respiration.

Proteins: Proteins are made up of amino acids and can also be used as a source of energy for cellular respiration. Before proteins can enter the process of cellular respiration, they must first be broken down into their constituent amino acids. This process is called proteolysis and can occur in the digestive system or within cells themselves. Once the amino acids have been released, they can be converted into pyruvate, acetyl-CoA, or other molecules that can enter the various stages of cellular respiration.

Fats: Fats are a rich source of energy and can be broken down into smaller molecules called fatty acids and glycerol. The breakdown of fats into fatty acids and glycerol is called lipolysis and occurs in the cytoplasm of cells. The fatty acids can be converted into acetyl-CoA, which can then enter the citric acid cycle, the second stage of cellular respiration. The glycerol can be converted into a molecule called glyceraldehyde 3-phosphate, which can enter glycolysis.

All of these molecules can enter the process of cellular respiration, but they must first be broken down into smaller molecules that can enter the various stages of cellular respiration. Starch and glycogen must be broken down into glucose, proteins into amino acids, and fats into fatty acids and glycerol before they can be used as a source of energy in cellular respiration.

Question - Explain how and where each of these molecules may enter the process of cellular respiration: Starch Glycogen Proteins Fats

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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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Answer:

To get the answer, you want to look at the balanced equation and note that 2 moles of aluminum (Al) can produce 1 mole of aluminum oxide (Al2O3). That's the critical relationship that exists.

Explanation:

\(v = vdm \times n\)

Vdm=22.4dm.

mole(n)=4 mol

therefore the total volume

\(v = 22.4 \times 4 \\ v = 89.6dm\)

Answer:

Protons = 6

Electrons = 6

Neutrons = 6

Explanation:

Given that:

Atomic number of C = 6

Mass number of C = 12

No. of protons:

We know that atomic number is the number of protons, so:

Protons = 6

No. of electrons:

Protons = electrons so:

Electrons = 6

No. of neutrons:

= Mass number - Atomic No.

= 12 - 6

Neutrons = 6

\(\rule[225]{225}{2}\)

Answer:

It is B. Budding

Explanation:

Hope this helped have an amazing day!

Answer: The correct option is 1.5 ml

Explanation:

To determine the volume of a 100 mg/ml injectable to draw up for a 150 mg dose, we can use the following formula:

Volume = (Dose in mg) / (Concentration in mg/ml)

Plugging in the values, we get:

Volume = (150 mg) / (100 mg/ml) = 1.5 ml

Therefore, the volume of a 100 mg/ml injectable to draw up for a 150 mg dose is 1.5 ml.

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When there is the two of the same element on the product side, you can balance chemical reactions by placing the coefficient in front of the element.

It should be noted that coefficients are whole numbers and should be chosen in such a way that they give the smallest possible whole numbers in the ratio of atoms.

Before that, let us revise how to balance chemical equations and then we will learn how to balance equations when there are two of the same element on the product side.

Balancing chemical equations:When we write an equation for a chemical reaction, the number of atoms on both sides of the equation should be equal. Balancing the equation is the process of making the number of atoms equal. 

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Answer:

Earth has layers because of density. Dense materials such as iron sank to the middle of the Earth, the center of its gravity. Less dense materials stayed at the top.

Explanation:

hope this help:)

The answer to the question, How does density affect the organization of earth is A : The densest material is closest to the center

The earth is made up of different layers namely,

Each layer goes from topmost to inner most and the density of each layer increases as we moves closer to the center of the earth.

So, the densest material is closest to the center.

So, the answer to the question, How does density affect the organization of earth is A : The densest material is closest to the center

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The electronic configuration of the element Sb (antimony) can be determined by referring to the periodic table. Antimony has an atomic number of 51, which means it has 51 electrons.

Writing out the electronic configuration using superscript with the orbital:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p³

Writing out the electronic configuration using noble gas notation:

[Noble Gas] 5s² 4d¹⁰ 5p³

The noble gas notation allows us to use the symbol of the noble gas element that comes before the element of interest in the periodic table. In the case of Sb, the noble gas that comes before it is Kr (krypton), which has the electronic configuration [Kr] 5s² 4d¹⁰. Therefore, we can replace [Kr] with its electronic configuration and continue with the remaining electrons.

Ranking the atoms in each group in order of increasing size:

a. beryllium < boron < neon

b. nitrogen < phosphorus < arsenic

c. argon < phosphorus < chlorine

The size of an atom is determined by its atomic radius, which generally increases as you move down a group in the periodic table and decreases as you move across a period from left to right.

Identifying the element from which it is easier to remove an electron:

a. lithium (Li) is easier to remove an electron compared to beryllium (Be)

b. fluorine (F) is easier to remove an electron compared to oxygen (O)

c. neon (Ne) is easier to remove an electron compared to krypton (Kr)

d. phosphorus (P) is easier to remove an electron compared to gallium (Ga)

The ease of removing an electron, or ionization energy, generally decreases as you move down a group and increases as you move across a period in the periodic table.

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