Describe the bonding you would expect to find in a coin made out of copper?

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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Answer:

3.0 moles Al₂O₃

Explanation:

We do not know which of the reactants is the limiting reactant. Therefore, you need to convert both of the given mole values into the product. This can be done using the mole-to-mole ratio made up of the balanced equation coefficients.

4 Al + 3 O₂ -----> 2 Al₂O₃

6.0 moles Al            2 moles Al₂O₃
----------------------  x  -------------------------  =  3.0 moles Al₂O₃
                                    4 moles Al

4.0 moles O₂           2 moles Al₂O₃
----------------------  x  -------------------------  =  2.7 moles Al₂O₃
                                    3 moles O₂

As you can see, O₂ produces the smaller amount of product. This means O₂ is the limiting reactant. Remember, the limiting reactant is the reactant which runs out before the other reactant(s) are completely reacted. As such, the actual amount of Al₂O₃ produced is 2.7 moles.

However, since this problem is directly addressing how much Al₂O₃ is produced from Al, the answer you most likely are looking for is 3.0 moles Al₂O₃.

True when carbon dioxide dissolves in rainwater carbonic acid forms which raises the ph of rainwater above 7.0

When carbon dioxide dissolves in rainwater, it forms carbonic acid. This lowers the pH of the rainwater, making it more acidic than 7.0. However, over time, the carbonic acid reacts with minerals in the soil, neutralizing its acidity and bringing the pH closer to neutral.

When carbon dioxide dissolves in rainwater, it forms carbonic acid which lowers the pH of the rainwater. This is because carbonic acid is a weak acid that can dissociate to form hydrogen ions (H+) and bicarbonate ions (HCO3-), which increase the acidity of the solution. As a result, the pH of rainwater can drop below 7.0. However, this acidity is temporary as carbonic acid eventually reacts with minerals in the soil to neutralize its acidity.

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The total heat energy required is expressed according to the formula:

where:

Qvap is the heat energy absorbed by the vapor

Qw is the heat energy absorbed by the water

Get the heat energy absorbed by the vapor at 100 degrees

Given the following parameters;

Mass of water = 100g

Molar mass of water (H2O) = 18.015g/mol

Hvap,w = 2259 J/g = 40.8 kJ/mol

Substitute the given parameters into the formula to have:

Get the heat absorbed by the water from 30 to 100 degrees and from 100 to 110 degrees using the formula below. Note that the water vapor is being heated without any phase changes, so we will be utilizing the specific heat capacity of water vapor.

Get the total heat energy required;

Answer:

M(AgNO3) = 169,8731 g mol

Explanation:

M(Ag) = 107,8682 g mol

M(N) = 14.0067 g mol

M(O) = 15.9994 g mol

M(AgNO3) = M(Ag) + M(N) + 3 x M(O) = 107.8682 + 14.0067 + 3 x 15.9994 =

= 169,8731 g mol

Just sum up all the respective elements' molar mass.

Answer:

90 grams. Input mass = output mass

Explanation:

Answer: a. 1.11 atm, 0.43 mol

Explanation:

Asp6 and His11 are two amino-acids contribute to the stabilization of ADP binding described in the passage.

In the given information, the amino acids Asp6, Asn9, Thr10, His11, and Arg27 are mentioned to be near the ADP binding site of PanK3. To determine which amino acids contribute to the stabilization of ADP binding, we need to consider their properties and interactions.

Asp6 refers to the amino acid aspartic acid at position 6, and His11 refers to histidine at position 11. Both of these amino acids have side chains that can form important interactions with ADP.

Aspartic acid (Asp) has a negatively charged side chain. It can form electrostatic interactions with positively charged groups of ADP, contributing to its stabilization.

Histidine (His) has a side chain with a positively charged imidazole group. Histidine can form hydrogen bonds and coordinate metal ions, which can also contribute to the stabilization of ADP.

Therefore, Asp6 and His11 are the two amino acids that likely contribute to the stabilization of ADP binding based on their properties and interactions with ADP.

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The bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5

Bond order is defined as the number of electrons in bonding molecular orbitals minus the number of electrons in antibonding molecular orbitals divided by two. As a result, we may determine the bond order of this diatomic particle by the formula: Bond order = (number of bonding electrons - number of antibonding electrons) / 2

Bond order = (8 - 5) / 2

Bond order = 1.5.

This diatomic molecule, according to the bond order, is a stable molecule since the bond order is greater than 1, indicating that it is a double bond. The molecule has an overall bond strength that is greater than a single bond, but not as strong as a triple bond. So therefore he bond order for a second-period diatomic particle containing five electrons in antibonding molecular orbitals and eight electrons in bonding molecular orbitals is 1.5

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Increasing atomic radius can have a significant impact on the crystal structure of a material, affecting parameters such as interatomic distances, coordination numbers, lattice parameters, symmetry, and mechanical properties.

As the atomic radius increases, there are several effects on the crystal structure of a material:

1. Interatomic Distance: With increasing atomic radius, the average distance between neighboring atoms in a crystal lattice also increases. This leads to a larger unit cell and a decrease in atomic packing density.

2. Coordination Number: The coordination number refers to the number of atoms surrounding an atom in a crystal lattice. As the atomic radius increases, the coordination number may change. For example, a smaller atom might have a higher coordination number, while a larger atom might have a lower coordination number. This can influence the overall structure and stability of the crystal.

3. Lattice Parameters: The lattice parameters, such as the lattice constant or unit cell dimensions, may be affected by changes in atomic radius. An increase in atomic radius can result in an expansion of the crystal lattice, leading to changes in the lattice parameters.

4. Symmetry: Changes in atomic radius can affect the symmetry of the crystal structure. Larger atoms may disrupt the symmetry and introduce distortions or vacancies in the crystal lattice.

5. Mechanical Properties: The mechanical properties of a material, such as its strength, hardness, and flexibility, can be influenced by changes in atomic radius. Alterations in atomic size can affect the bonding forces between atoms and, consequently, the material's mechanical behavior.

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Answer:

The answer is C. Plasma

Answer:

1.8 is the answer

Explanation:

9/5 = 1.8

5 sleps = 10 quib

so

1 quib = 5/ 10 slep

1 quib = 1/2 slep

9 quib = 9/2 slep

9 quib = 4.5 slep

so it rounds upto 5 slep

Sucrose is more soluble in water than lauric acid. This is because sucrose is a polar compound and can form hydrogen bonds with water molecules, whereas lauric acid is a nonpolar compound and cannot form such bonds. Therefore, sucrose can dissolve more readily in water than lauric acid.

To determine which compound, lauric acid (C₁₂H₂₄O₂) or sucrose (C₁₂H₂₂O₁₁), is more soluble in water, we can consider their molecular structures and their interactions with water molecules.

Lauric acid is a fatty acid with a long hydrocarbon chain, which makes it mostly nonpolar. Water is a polar solvent, and it generally has a stronger interaction with polar molecules due to its ability to form hydrogen bonds. Since lauric acid is nonpolar, it has weak interactions with water, making it less soluble in water.

Sucrose, on the other hand, is a disaccharide sugar composed of glucose and fructose units. It has numerous hydroxyl (-OH) groups that are polar, enabling it to form hydrogen bonds with water molecules. Due to these stronger interactions with water, sucrose is more soluble in water.

In conclusion, sucrose (C₁₂H₂₂O₁₁) is more soluble in water than lauric acid (C₁₂H₂₄O₂) due to its ability to form hydrogen bonds with water molecules.

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The vanilla extract can be used in the house to;

Vanilla beans are steeped in ethyl alcohol and water to produce vanilla extract, an aromatic, amber-colored liquid. pure vanilla extract is gotten through macerating and percolating vanilla pods in an ethanol and water mixture, vanilla extract is created.

In many Western sweets, particularly baked goods like cakes, cookies, brownies, and cupcakes, as well as custards, ice creams, and puddings, it is seen as a necessary component.

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Answer:

the chemical composition of a substance.

Explanation:

Blue is the color absorbed by a solution that should appear as the given color orange. If the material absorbs blue you will glimpse the color orange.

When sunlight shines through an orange solution, the violet, blue and green wavelengths are immersed. The different colors enact through. The transmitted light is the light we see, and it glances orange. Colored liquids or solutions glance colored because they absorb some of the light shined on them. Colored objects look the way they do because of reflected light. When sunlight is shined on a green leaf, the violet, red and orange wavelengths are absorbed. The various wavelengths within the visible part are reliable for the different colors we see.

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Answer:

option B is correct

Energy flows between the trophic levels of different food chain

hope it helps

Energy flows between the trophic levels of the different food chains. So the correct option is B.

The trophic level is a step in a nutritive series also called a food chain which is an integral part of an ecosystem. The organisms that are part of a food chain are classified into these energy levels. This classification is on the basis of their feeding behavior.

The first and the lowest level is designated for producers which are the green plants. These plants or the products produced by these plants are consumed by second-level organisms the herbivores, or plant eaters.

They are called primary consumers. At the third level, there are the primary carnivores, which are the meat eaters. These organisms feed on herbivores. They are called secondary consumers. At the fourth level, secondary carnivores are eaten by the primary carnivores.

These categories of levels are not rigid in their definition, as there are many organisms that feed on several trophic levels. For example, some carnivores also feed on plant materials or carrion and are called omnivores, and some herbivores can occasionally eat animal matter.

There is a separate trophic level for the decomposers or the transformers which consist of organisms like bacteria and fungi. These break down dead organisms and waste materials into nutrients usable by the producers.

Therefore the correct option is B.

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The molar mass of the gas, given that 3.25 g of the gas occupied 2.56 L is 30.66g/mol

To obtain the molar mass of the gas, we shall first obtain the number of mole of the gas. This can be obtained as follow:

PV = nRT

0.95 × 2.56 = n × 0.0821 × 280

Divide both sides by (0.0821 × 280)

n = (0.95 × 2.56) / (0.0821 × 280)

n = 0.106 mole

Haven obtain the mole of the gas, we shall determine the molar mass of the gas as follow:

Molar mass = mass / mole

Molar mass of gas = 3.25 / 0.106

Molar mass of gas = 30.66g/mol

Thus, the molar mass of the gas is 30.66g/mol

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Answer:

3.66 g de 2-feniletanol (C5H5-CH2-CH2-OH)

1.8 * 10 ^ 22 moléculas

Explanation:

Sabemos que podemos obtener la masa de una sustancia a partir del número de moles presentes de la siguiente manera;

número de moles = masa / masa molar

masa molar de 2-feniletanol (C5H5-CH2-CH2-OH) = 122,16 g / mol

masa = 0.03 moles * 122.16 g / mol = 3.66 g de 2-feniletanol (C5H5-CH2-CH2-OH)

Si 1 mol = 6.02 * 10 ^ 23 moléculas

0.03 moles = 0.03 moles * 6.02 * 10 ^ 23 moléculas = 1.8 * 10 ^ 22 moléculas

Answer:

metal,middle of the periodic table,solid

Explanation:

Because they have an extended structure, elements that are metal tend to be in the middle of the periodic table state at room temperature as solid

Because they have an extended structure, elements that are metal, tend to be in the middle of the periodic table, and stay solid state at room temperature.

Metals are those elements of the periodic table which are malleable soft and ductile the full stop, they are very reactive because they have valence electrons in their outermost shells. They are present in the middle of the periodic table.

Some metals are Aluminum, magnesium, titanium iron zinc, bronze, etc.   There are 92 metals are present in the periodic table. Metals are useful for making many things such as jewelry, wires, foil papers, and gates. Steel is the most useful metal in the world.

Thus, metal elements tend to be in the middle of the periodic table and maintain their solid state at ambient temperature because of their elongated structure.

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Answer:

D. Contour lines.

Explanation:

The primary difference is that they show elevation in detail. Characteristics of topographic maps include: they show elevation using contour lines. Put simply, a contour line is a line which joins points of equal elevation above sea level.

1) write balanced chemical equation.

\(K_{2}CO_{3}_{(aq)}+2\ HBr_{(aq)}\ ->\ 2\ KBr_{(aq)}+CO_{2}_{(g)}+H_{2}O_{(l)}\)

2) separate into ions, if possible.

\(2\ K^{1+}_{(aq)}+CO_{3}^{2-}_{(aq)}+2\ H^{1+}_{(aq)}+2\ Br^{1-}_{(aq)}\ ->\ 2\ K^{1+}_{(aq)}+2\ Br^{1-}_{(aq)}+CO_{2}_{(g)}+H_{2}O_{(l)}\)

3) remove spectator ions.

\(2\ H^{1+}_{(aq)}+CO_{3}^{2-}_{(aq)}\ ->\ CO_{2}_{(g)}+H_{2}O_{(l)}\)

The net ionic reaction is that in which positive ions and negative ions of reactant and product are equal, resultant charge will be neutral.

2K⁺ +CO3²⁻ + 2H⁺ +2Br⁻ --> 2K⁺+ 2Br⁻ + CO2 + +H2O

The net ionic equation is the chemical equation that shows only those elements, compounds, and ions that are directly involved in the chemical reaction.

Example: - "NaOH" is "Na+ + OH⁻".

K₂CO₃(aq) + 2HBr(aq) --> 2KBr(aq) + CO₂ (g)+ H₂O(l)

Similarly, above reaction can be written as.

2K⁺ +CO3²⁻ + 2H⁺ +2Br⁻ --> 2K⁺+ 2Br⁻ + CO₂ + H₂O

Thus, above reaction is know as net ionic reaction.

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Answer:

tendinitis.

carpal tunnel syndrome.

osteoarthritis.

rheumatoid arthritis (RA)

fibromyalgia.

bone fractures.