which of the following structures are meso compounds? b, d and e only a and e only d and e only b only

a. CyH6 - Molecular solid, b. Na - Ionic solid, c. SiO2 - Covalent solid, d. Co - Metallic solid, e. N2O - Molecular solid, f. NaNO3 - Ionic solid, g. Al - Metallic solid, h. C(diamond) - Covalent solid, i. SO2 - Molecular solid

CyH6, N2O, and SO2 are molecular solids, as these compounds are composed of individual molecules that are held together by weak intermolecular forces. Na is an ionic solid, as it is composed of positively charged sodium ions and negatively charged chloride ions held together by strong electrostatic forces. SiO2 is a covalent solid, as it is composed of individual Si-O covalent bonds.Co is a metallic solid, as it is composed of a metallic lattice of metal atoms held together by metallic bonds. NaNO3 is an ionic solid, as it is composed of positively charged sodium ions and negatively charged nitrate ions held together by strong electrostatic forces.

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The amount of precipitate produced in mg/l and kg/day is 57.2753 kg.

Precipitation is the process of changing a dissolved substance from a super-saturated solution to an insoluble solid in an aqueous solution.

Chemical feed rate :

60 mg per liter we need

60 grams per one m3

60 x 3800 grams = 228 kg per 3800 m³

Since the water flow per day is 3800 m³, alum consumption per day is 228 kg

Alkalinity: The alkalinity requirement for alum is 0.49 mole of alkalinity per one mole of alum. The precipitate formed: For one mole of alum, 2 moles of Al(OH)₃ will form.

So 621 g of alum reacts to form

2 x 78 g of Al(OH)₃ precipitate

228 x 1000g will form:

(228 x 1000 x 156)/621 = 57.2753 kg per day precipitate

Therefore, the amount of precipitate produced in mg/l and kg/day is 57.2753 kg.

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The question is incomplete. Your most probably complete question is given below:

Natural water with a flow of 3800 m3/d is to be treated with an alum dose of 60 mg/L.

Answer:

Explanation: 4P+5O2-----2P2O5

The molecules that are polar among the given options are as follows:

NBr₃

CH₃Cl

Polar molecules are formed when one end of the molecule is said to possess more positive charges and whereas the opposite end of the molecule has negative charges, creating an electrical pole.

In polar molecules, the distribution of electrons between the covalently bonded atoms is not even.

The N–Br bond in NBr₃ is polar because the electrons that are shared between the two atoms are concentrated in the Br atom.

CH₃Cl is polar because the C-Cl bond is polar, the CH₃Cl has a net dipole, so CH₃Cl is polar.

PCl₅, CH₄, N₂ are said to be non polar because, as a bond is formed between the two atoms, there is no difference in their electronegativity and the net dipole moment becomes zero.

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In the given images structure 1 represents pure element, structure 2 represents heterogenous and structure 3 represents homogenous structure, respectively.

A Pure element is a structure that is made up of only one kind of particle. Homogenous mixture is a mixture that contain same proportion of its components while heterogenous mixture is a mixture that contains unequal proportion of the component.

Given, blue circle represents an atom and red square represents an atom of second type of element.

In the structure given in 1st, half part of sphere contains blue atom and another half contain another type of atom(red). Thus, the structure is an example of pure element.

In the 2nd structure, Blue and Red elements are mixed together in an unequal amount in a sample. Thus, it is an example of heterogenous structure.

In 3rd structure, number of two type of atoms are same. Thus, it is an example of homogenous structure.

Therefore, the provided structure represents pure element, heterogenous structure, and homogenous structure, respectively.

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At low temperature and high pressure Ethane gas doesn't not behave like Ideal gas because of its larger molecular size.

Ideal gas is a theoretical gas composed of many randomly moving particles. Ideal gases are called as hypothetical gases which do not exist in nature. Gases exhibit ideal behavior at certain conditions. Ideal gases are assumed to have no interactions among the molecules. The volume of the gases is negligible with respect to the total volume. At low temperature and high pressures the molecules of a gas are very close at each other such that the volume of the gas molecules become significant. The interactions between the atoms become strong enough to affect their properties.

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Answer:

Explanation: Cl2 + 2NaBr ------ 2Nacl+Br2

3H2+N2--------2NH3

2Na+Br2-----2NaBr

Cucl2+H2S----cuS+2Hcl

2Hgo+Cl2-----2Hgcl+O2

C+2H2-----CH4

In his atomic theory, Dalton postulated that every atom of a specific element is identical. Given that CuCu's mass spectrum has two peaks, one at 63 amu and the other at 65 amu, option b is correct.

A scientific theory addressing the composition of matter was put forth by English physicist and chemist John Dalton in 1808. It asserted that the fundamental units of matter are minute, indivisible particles known as "atoms." The number of protons in the nucleus of a pure substance, or chemical element, comprised exclusively of one species of atoms, is known. Chemical elements, as opposed to chemical compounds, cannot be reduced through any chemical process to less complicated molecules.

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The complete question is -

a) The mass spectrum of CuCu has a peak at 123amu and another peak at 26amu.

b) The mass spectrum of CuCu has a peak at 63amu and another peak at 65amu.

c)The mass spectrum of CuCu has a peak at 89amu and another peak at 69amu.

Heterogeneous mixtures easily separated into its components by simple techniques suchas filtering or decanting.

What is meant by filtering ?

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A mass is recorded as 15.02 g. Given the accepted level of uncertainty in any recorded measurement, The correct answer is 15.01 - 15.03 g.

The accepted level of uncertainty in any recorded measurement is typically given as the number of significant figures in the measurement. In this case, the mass is recorded as 15.02 g, which has three significant figures. This means that the true value of the mass could be anywhere within ±0.01 g of the recorded value. Therefore, the range in which this mass will fall is 15.01 - 15.03 g.

Option-15.00 - 15.10 g is not correct as it is greater than ±0.01 g

Option-14.92 - 15.12 g is not correct as it is greater than ±0.01 g

Option-14.95 - 15.05 g is not correct as it is not including the recorded value 15.02g

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An expressions can be used to calculate the value of K3 for reaction 3 at the same temperature is

K3 ⇒ ( - Kı) + (- K2)

To determine the value of K3 for reaction 3 at the same temperature, use the expression as

"K3 ⇒ (- K) + (- K2)".

This is thus because the concentrations of the reactants and products in a reaction affect the equilibrium constant for that reaction. Since reaction 3 is the result of the combination of reactions 1 and 2, it is possible to compute reaction 3's equilibrium constant by multiplying reactions 1 and 2's equilibrium constant. In the instance of this issue, it is clear that the results of reaction 1 and reaction 2 both serve as the reactants for reaction 3 and its products, respectively. The equilibrium constant of reaction 3 at the same temperature as reactions 1 and 2 is therefore

K3 ⇒ K1 x K2.

It's vital to remember that the temperature might have an impact on the relationship between the equilibrium constants of a reaction, making it not always possible to combine reactions to produce a new equilibrium constant.

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P or N type materials are created by combining pure semiconductor materials with impurities. When an impurity is combined with three valence electrons to give the compound a net positive charge, a P type material is created.

the components, ingredients, or materials from which something is formed or may be made. (2): material that possesses distinguishing characteristics that allow for categorization. sticky substance Any substance used to create an object is referred to as a material. Different materials include clay, glass, paper, wax, air, water, and chalk. Matter is the basis of all materials. Metals, polymers, and ceramics are the three main categories of materials. Steel, fabric, and ceramics are a few examples of them. These classes often have quite distinct origins, traits, and uses. Undoubtedly, materials have a bigger role in our society than we know. Almost every aspect of our everyday lives—including communication, response, shelter, clothing, and food production—is impacted by materials.

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The electromagnetic spectrum and the atomic emission spectra are both related to the study of light and its properties. When an atom absorbs energy, electrons move to a higher energy level, and when they return to a lower energy level, they release energy in the form of light.

The electromagnetic spectrum is a range of all types of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. These types of radiation have different wavelengths, frequencies, and energy levels. The electromagnetic spectrum is a continuous spectrum, with no clear boundaries between the different types of radiation.On the other hand, atomic emission spectra refer to the light emitted by atoms when they are excited. The light emitted by atoms is always specific to the element and the energy level of the atom. . This light is specific to the element and the energy level of the atom, and it results in a line spectrum, which is made up of specific and discrete lines of different colors.In summary, the electromagnetic spectrum is a continuous range of all types of electromagnetic radiation, while atomic emission spectra refer to the specific light emitted by atoms when they are excited, resulting in a discrete line spectrum. The electromagnetic spectrum provides an overview of all types of radiation and their characteristics, while atomic emission spectra allow for the identification of specific elements by analyzing the light they emit.

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A liquid's density is a measure of how heavy it is in relation to its measured volume.

Liquid density = 1.17 g / cm^3.

Mass of Liquid = 3.02 kg

1 kg = 1000 g

So, 3.02 kg = 3020.0 g

Using the formula

density of liquid = (mass of liquid) / (volume of the liquid)

By modifying above formula, which gives

volume of the liquid = (mass of liquid) / (density of liquid)

Now, put a value in an expression

Which gives, volume of the liquid = (3020.0 g) / (1.17 g / cm^3)

          = 2581.197 cm^3

As, 1 cm^3 = 0.001 L

Therefore, 2581.197 cm^3 = 2.581197 L

Therefore, the liquid volume is 2.581197 L.

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To find the volume of the liquid in liters, we can use the formula of density the volume of 3.02 kg of the liquid is approximately 2.58 liters.

Given to us is

Mass = 3.02 kg

Density = 1.17 g/cm³

The formula is:

Volume = Mass / Density

First, we need to convert the mass to grams:

3.02 kg = 3,020 g

Next, we can substitute the values into the formula:

Volume = 3,020 g / 1.17 g/cm³

To convert the volume from cubic centimeters (cm³) to liters (L), we need to divide by 1000 (since 1 L = 1000 cm³):

Volume = (3,020 g / 1.17 g/cm³) / 1000

Calculating this expression, we find:

Volume ≈ 2.58 L

Therefore, the volume of 3.02 kg of the liquid is approximately 2.58 liters.

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One reason why nitrogen is typically present in the largest quantity in inorganic fertilizer is because it is an essential nutrient for plant growth.

What are fertilizers?

Fertilizer is a substance added to soil to provide plants with essential nutrients such as nitrogen, phosphorus, and potassium. The primary purpose of fertilizer is to increase crop yields and improve the overall health of plants. Fertilizers can be organic or inorganic.

Nitrogen is a key component of chlorophyll, the molecule in plants that allows them to absorb light and use it to photosynthesize. Without sufficient nitrogen, plants cannot produce enough chlorophyll and will not grow well. Nitrogen is also necessary for the production of amino acids, which are the building blocks of proteins, and for the synthesis of nucleic acids, which are necessary for cell growth and replication.

Another reason is that Nitrogen is abundant in the atmosphere, comprising 78% of it, and is relatively easy to convert to a form that can be used by plants. Nitrogen can be converted to ammonia, which is a common ingredient in inorganic fertilizers, through the Haber-Bosch process, which uses high temperatures and pressures to combine nitrogen and hydrogen.

Additionally, Nitrogen is relatively cheap and easy to produce, making it a cost-effective choice for fertilizer manufacturers.

In summary, Nitrogen is an essential element for plant growth, abundant and relatively easy to convert to a form that can be used by plants and cost-effective, that's why it is present in the largest quantity in inorganic fertilizers.

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Inter-molecular interactions between gas particles have a stronger influence on the properties as pressure rises.

Fluoridated gases have the longest atmospheric lifetime. In a gas, the particles are dispersed. They resemble a "ideal gas," where there is little particle interaction and collisions are completely elastic, under normal pressure and at low temperatures. Inter-molecular interactions between gas particles have a stronger influence on the properties as pressure rises. Because of the space between atoms or molecules, the majority of gases are transparent.  Like fluorine and chlorine, some of them have almost no color. Gases usually exhibit weaker responses to electric and gravitational fields than other forms of matter. Gases are less dense and more viscous than liquids and solids.

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Answer:

37.36 degrees Celsius

Explanation:

The temperature change of a substance can be calculated using the formula:

ΔT = Q / (m * Cp)

Where:

ΔT is the change in temperature (in degrees Celsius)

Q is the heat added or removed (in calories)

m is the mass of the substance (in grams)

Cp is the specific heat capacity of the substance (in calories per gram per degree Celsius)

For a 60g sample of iron with a specific heat of 0.214 cal/g*C and 2000 calories added to it, the temperature change would be:

ΔT = 2000 / (60 * 0.214) = 37.36 degrees Celsius

NO2(g) When compared to temperature 1, NO2(g) is burned at a quicker pace at temperature 2 because more molecules have energies at or above the minimum energy.

necessary for a collision to result in a reaction.A reaction's suggested rate-determining step is2NO2(g) + NO3(g) (g)The graph above depicts the energy distribution for NO2(g) molecules at two temperatures. According to the graph, NO2(g)NO2(g) is burned at a quicker rate at temperature 2 because more molecules have energies equal to or greater than the minimum energy necessary for a collision to result in a reaction at temperature 1. The first step in balancing a chemical equation is to identify your reactants and products. Remember, your reactants are on the left side of your equation. The products

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Because of this, it is calculated that -1013 kJ/mol is required to produce NaHCO3 N a H C O 3 from its component elements.

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It's possible that the substances will react to form the product when the substance is heated. The kinetic energy of a substance will increase when heated. Therefore, choice E is the right one.

A chemical reaction is the process by which one or more reactants are changed into products, which are new substances. Depending on the reactants, the substances are either chemical elements or compounds.

Since an increase in temperature typically speeds up a reaction by raising the average kinetic energy of the reactant molecules in a solution, heating the solution will cause the formation of product. This will increase the frequency at which different substances in a solution collide, which will cause products to form.

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Complete question:

A chemist is trying to get two substances to react, but he is unsuccessful. He knows that the two substances should react with one another. Which of the following could he do to possibly get the substances to react? (Select all that apply)

a

increase the concentration of one of the substances

b

crush up one of the substances

c

decrease the concentration of one of the substances

d

cool the substances

e

heat the substances

Only reversible reactions may reach dynamic equilibrium, which happens when the rates of the forward and reverse processes are identical.

When a system is in a state of dynamic equilibrium, the reversible reaction that is occurring in it no longer changes the ratio of reactants to products, but there is still movement of substances between the reactants and products. Because reactants and products continue to alter even after equilibrium has been reached, chemical equilibrium is dynamic in nature. Dynamic equilibrium is a condition in which bodies are moving at a constant speed as opposed to static equilibrium, which is a state in which bodies are at rest (rectilinear motion). The total amount of pressures exerted on them in both situations is zero.

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Only reversible reactions may reach dynamic equilibrium, which happens when the rates of the forward and reverse processes are identical.

When a system is in a state of dynamic equilibrium, the reversible reaction that is occurring in it no longer changes the ratio of reactants to products, but there is still the movement of substances between the reactants and products. Because reactants and products continue to alter even after equilibrium has been reached, chemical equilibrium is dynamic in nature. Dynamic equilibrium is a condition in which bodies are moving at a constant speed as opposed to static equilibrium, which is a state in which bodies are at rest (rectilinear motion). The total amount of pressure exerted on them in both situations is zero.

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The percent by mass composition of c (carbon) in the compound ch4 is 10%.

As an example, let's look at methane, or CH4. Methane's formula weight is [12.01 + (4 x 1.008)] = 16.04 (grams per cubic meter). Methane has a mass that is made up of (12.01/16.04) x 100 = 74.87% carbon and (4.032/16.04) x 100 = 25.13% hydrogen.

Sulfuric acid's percentage makeup of each element: Hydrogen% is equal to (2.016/98.07) x 100, or 2.0556%. Sulfur% = 32.06 98.07 100 = 32.69% Oxygen% = (63.996/98.07) 100 = 65.25%.

(1) CO = 80% CH, equals 20%; (2) CO = 90% CH4 = 10%.

Confirm that about 82.6% of C4H10's mass is made up of carbon. The molar masses of hydrogen and carbon on the periodic table are, respectively, 12.0 and 1.01.          

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Answer:

Explanation:

aluminum

Answer: The aluminum ion

Explanation:

The one which helps to  establish the concentration gradient necessary for this process to occur is the Na⁺/K⁺ pump.

During neuronal signaling, a change in the membrane potential will cause the  sodium channels to open and let the Na⁺ ions diffuse down the concentration gradient into the cell. The sodium - potassium pump is an enzyme. The sodium - potassium pump helps to maintain the osmotic equilibrium and the potential in the cells.

Thus, the Na⁺/K⁺ pump helps to  establish the concentration gradient necessary for this process to occur.

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The redox reaction occurring in acidic aqueous solution is BrO3(aq) + 6N2H4(g) → 3Br-(aq) + 3N2(g).

The redox reaction occurring in acidic aqueous solution is: BrO3(aq) + N2H4(g) → Br-(aq) + N2(g)

To balance this redox equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. Additionally, we need to make sure that the charge is balanced on both sides of the equation.

The unbalanced equation looks like this:

BrO3(aq) + N2H4(g) → Br-(aq) + N2(g)

We can start by balancing the elements:

BrO3(aq) + N2H4(g) → Br-(aq) + N2(g)

Now we can balance the charge:

BrO3(aq) + N2H4(g) → Br-(aq) + N2(g)

Finally, we can check that the number of atoms of each element is the same on both sides of the equation.

The balanced equation is:

BrO3(aq) + 6N2H4(g) → 3Br-(aq) + 3N2(g)

The balanced equation shows that 6 molecules of N2H4 and 3 BrO3 are required to produce 3 Br- and 3 N2.

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The empirical formula for a compound is 2N2O if it contains 4 moles of oxygen and 10 moles of nitrogen. A compound is a material that results from the chemical bonding of two or more elements.

The two types of bonding that hold the atoms of a molecule together most frequently are ionic and covalent. In chemistry, a substance's empirical formula is the simplest whole number ratio of the atoms that are present in it. The simple illustration of this concept is the empirical formula of sulphur monoxide, which is just NO.

Nitrogen = 10/14 = 0.71 M of nitrogen = 4/16 = 1/4 = 0.2 M of oxygen

Atomic mass is equal to 0.2/0.2 and 1

Atomic mass = 0.71/0.2 = 3.6, or around 4, and empirical formula = 2N2O.

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Krista can stay 9 nights in Florida if she saves $3,500.

The graph of a linear function is a straight line. The following is the form of a linear function.

a + bx = y = f(x).

One independent variable and one dependent variable make up a linear function. x and y are the independent and dependent variables, respectively.

Given:

Krista is saving money to visit her relatives in Florida.

It costs $1,250 for the plane ticket and $250 per night for the hotel.

Using the function that represents the cost c based on the number of nights n Krista spends in Florida,

f(x) = 250x + 1250.

If f(x) = 3500,

250x + 1250 = 3500

250x = 2250

x = 9

Therefore, she can stay for 9 nights.

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The incorrect statements are option (a) 1 and 2 :

1. Although ice, water and water vapor all look different and display different physical properties, they are chemically the same.

2. During burning of a candle, both physical and chemical changes take place.

Although ice, water and water vapor all look different and display different physical properties, they are chemically the same. This statement is incorrect. Ice, water, and water vapor are all forms of water, but they are not chemically the same. They have different physical properties such as state, shape, and temperature.

Therefore, During burning of a candle, both physical and chemical changes take place. This statement is incorrect. Burning of a candle is a chemical change, where the wax is broken down into smaller molecules and is converted into carbon dioxide, water vapor and other gases.

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Answer:

The chance of guessing the first one is 1/9. Second is 1/8. Third is 1/7.

Total is 1/9 x 1/8 x 1/7 = 1/504

Explanation:

According to the balanced chemical equation and stoichiometry, 7.95 moles of barium chloride  will react with 5.3 moles of K₃N.

It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.

As per the chemical equation, 3 moles of barium chloride give 2 moles of potassium nitride , thus 5.3 moles of potassium nitride will give 3×5.3 /2=7.95 moles .

Thus , 7.95 moles of barium chloride  will react with 5.3 moles of K₃N.

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