If you dilute a 10.0 mL of a 11.5 M HCl solution to make a 1.10 M HCl solution, what will the final
volume be?

Answer: Single-celled eukaryotic organisms.

Explanation:

The moisture from a hydrated salt can be removed through normal heating. But the water of crystallization is incorporated within the crystal structure of the salt and difficult to remove.

The water of crystallization is the  water molecules that make up a salt crystal's structure. The water of crystallization is water that has chemically joined with a crystal structure.

The entire amount of water in a crystal at a specific temperature is known as the water of crystallization, and it often exists in a specific ratio in various contexts. A metal complex's crystalline structure contains water, as does a salt that isn't chemically connected to the metal cation.

Therefore, the water content inside the crystal lattice of the salt needs more heat  energy to be removed.

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The most well-known feature of mica is arguably their flawless cleavage into thin elastic sheets. The sheet structure mentioned manifests as the cleavage.

The silicate mineral family known as micas is distinguished by the ease with which individual mica crystals can break into incredibly thin, elastic plates. Perfect basal cleavage is the term used to describe this feature.

Mica is very reflective and has good cleavage, which allows it to separate into thin, resilient sheets that are the mineral group's defining feature. Thin sheets are translucent or transparent if they are deeply colored.

Thus, The most well-known feature of mica is arguably their flawless cleavage into thin elastic sheets.

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Based on the information of enthalpy values provided, the Enthalpy of the reaction is -335 kJ; option c.

The enthalpy of a reaction is a  measure of heat changes that occur when a reaction occurs to form a product.

The enthalpy of a reaction measures the sum total of the heat that is absorbed or liberated in a given reaction where products are formed from the reactants.

The formula for calculating the heat change of a reaction is given below:

For the given reaction:

Enthalpy of the reaction = [(-134 + 3 * (-92) - (-750] kJ

Enthalpy of the reaction = -335 kJ

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The reaction that would not occur based on the electrochemical series is; FeCl₂ + Br₂ →

When we talk about the activity series, we need to be thinking about the ease with which elements react. If we are dealing with the metals we have to talk about the ease with which the metals are able to loose one or more electrons.

If we are dealing with the non metals, we have to look out how easily that the element is going to be able to accept one or more electrons. It is also clear that an element can only be able to any element that is below it in the periodic table of the elements.

We would now have to look at the replacements reaction to know the one in which a lower element in the series is reaction with a higher one. Armed with the knowledge of the table it is clear that bromine can not replace chlorine from its salt.

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The pressure will increase on increasing the temperature of container. is the correct answer

What is pressure ?

Pressure is a measure of the force applied perpendicular to a surface per unit area. The unit of pressure in the International System of Units (SI) is the pascal (Pa), but other units, such as atmospheres (atm), bar, torr, and pounds per square inch (psi), are also commonly used, depending on the context. Pressure can be generated by many different sources, including the weight of a column of a fluid, the compression of a gas, and the tension in a solid object. In physics and engineering, pressure is often used to describe the state of a fluid in a container, such as a gas in a cylinder or a liquid in a tank. In this context, pressure is related to the height of the fluid column and the density of the fluid.

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Using the standard reaction enthalpies,

For, 2S(s) + 3O₂(g) → 2SO₃(g) , ΔH⁰(reaction) = - 791 KJ

The standard enthalpy of the reaction describe as energy released or gain by the reaction at the time of reaction done or transformation of compound by chemical reaction, during these chemical process heat energy released or required from reaction. And standard enthalpy calculated as amount of heat released or required per mole of reaction at constant pressure.

Enthalpy of the reaction depends on the volume, pressure and internal energy of the reaction or system so, enthalpy is a state function. And value of enthalpy may be negative or positive because its show the state of reactions means reaction required energy or reaction released energy and it denoted by the negative and positive value of enthalpy.

Enthalpy denoted by the: ΔH⁰

and its unit is kJ/mol. According to Hess’s law total enthalpy change of the reaction is the sum of all individual changes in enthalpy.

Change in enthalpy calculated by the, ΔH = q

or, ΔH = H(reactant) - H(product)

or, q = H(reactant) - H(product)

or, ΔH⁰ = H(reactant) - H(product)

Where,

ΔH = change in enthalpy

q = heat or energy.

So, Enthalpy change for the reaction:

ΔH⁰ = ∑ΔH(product) - ∑ΔH(reactant)

Now, write the reaction and find balance chemical reaction:

SO₂(g) → S(s) + O₂(g) , ΔH⁰ = +296.8 kJ    ............. (i)

2SO₂(g) + O₂(g) → 2SO₃ (g) , ΔH⁰ = -197.8 kJ  ................(ii)

Next, to determine ΔH⁰(reaction) for the following reaction:

2S(s) + 3O₂(g) → 2SO₃(g)

to find enthalpy so, first reverse the reaction equation (i)

S(s) + O₂(g) → SO₂(g),   ΔH⁰ = - 296.8 kJ  .......... (iii)

[If we reverse the chemical reaction than standard enthalpy of these reaction also goes to reverse so]

Now, multiply the reaction equation (iii) by 2 and get-

2S(s) + 2O₂(g) → 2SO₂(g),    ΔH⁰ = -593.6 kJ ……(iv)

Now, add the reaction equation (ii) and reaction equation (iv):

2SO₂(g) + O₂(g) → 2SO₃ (g) , ΔH⁰ = -197.8 kJ

2S(s) + 2O₂(g) → 2SO₂(g),    ΔH⁰ = -593.6 kJ

from adding reaction equation (ii) and (iv) we get the reaction, we get:

2S(s) + 3O₂(g) → 2SO₃(g) , ΔH⁰(reaction) = ( -197.8 kJ) + (-593.6 kJ)

                                                                     = - 791 KJ

[Standard enthalpies of the reaction are negative means reaction required energy to done reaction completely]

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to prevent the glucose undergoing isomerization to an aldehyde, or fructose to alpha-hydroxy-ketone form. 

Answer:

[tex] \huge{ \boxed{2.39 \times {10}^{24} \: \text{atoms}}}[/tex]

Explanation:

To find the number of entities in a given substance we use the formula

[tex] \bold{N = n \times L} [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question;

n = 3.98 mol

N = 3.98 × 6.02 × 10²³ = 2.39 × 10²⁴

We have the final answer as

[tex] \bold{2.39 \times {10}^{24} \: \text{atoms}}[/tex]

For the chemical reaction (CH₃)₂NNH₂(l) + 4H₂O(g) → N₂(g) + 4H₂O(g) + 2CO₂(g), the energy change in kJ per pound is -1.28 x 10⁴ kJ/lb.

The enthalpy change of the reaction, (CH₃)₂NNH₂(l) + 4H₂O(g) → N₂(g) + 4H₂O(g) + 2CO₂(g) is ΔH° = -1694 kJ (kilojoules)

To convert kJ to kJ per pound, 1 pounds is = 0.453592 kg

And converting to gram, 0.453592 kg x 1000 = 453.592 g

Approximately 1 lb = 453.6 g

Using the molar mass of dimethyl hydrazine ( (CH₃)₂NNH₂), 60.1 g/mol.

ΔE in kJ/lb = Δ in enthalpy/molar mass x weight

ΔE = (-1694 kJ/60.1 g) x (453.6 g/1 lb)

ΔE = -12785.33

ΔE = -1.28 x 10⁴ kJ/lb

The energy change derived from the reaction using the change in enthalpy and molar mass in kilojoules per pounds is -1.28 x 10⁴ kJ/lb.

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The following which best describes the number of atoms for each element in the chemical reaction C₆H₁₂0₆ +60₂---> 6H₂0 + 6CO₂ is that there are 6 carbon atoms, 12 hydrogen atoms and 18 oxygen atoms on the reactant side and 6 carbon atoms, 12 hydrogen atoms and 18 oxygen atoms on the product side which is therefore denoted as option B.

This is referred to as the representation of a chemical reaction in the form of symbols and formulae and depicts the elements or compounds which are involved.

According to the law of conservation of mass, the masses and elements of the products and reactants must be the same which is therefore why the total number of elements of carbon, hydrogen and oxygen on the reactant and product side are equal.

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The full question is:

A model of a chemical reaction is shown below C₆H₁₂0₆ +60₂---> 6H₂0 + 6CO₂. Which of the following best describes the number of atoms for each element in the chemical reaction?

The molality of the solution is 0.0971 m/kg

The moles of solute per liter of solution is measured as molarity. For instance, when table salt is dissolved in water, water serves as both the solution and the solute. Sodium chloride weights 58.44 grams per mole. One molar solution, or 1M, is created by dissolving 58.44 grams of sodium chloride in one liter of water.

Colligative property:  freezing point depression.

ΔT = Kf. m

ΔT = T°fussion pure solvent - T° fussion solution

Kf = depression constant for water

0°C - (-2.05°C) = 21.1 °C/m . m

2.05°C = 21.1 °C/m . m

2.05°C / 21.1 °/m/°C = m  → 0.0971 m/kg

A mole is a unit of measurement for a chemical substance, and it is from this unit that the word "molarity" is derived. The method of figuring out how much of a material a certain chemical solution contains is known as molecularity, sometimes known as the molar concentration of a solution.

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Answer: Mesopotamia

Civilizations first appeared in Mesopotamia (what is now Iraq) and later in Egypt. Civilizations thrived in the Indus Valley by about 2500 B.C.E., in China by about 1500 B.C.E., and in Central America (what is now Mexico) by about 1200 B.C.E. Civilizations ultimately developed on every continent except Antarctica.

Hope this helps!

The claim that can be supported is that the channels in mars are made by the flow of lave and not by water. Thus, claim  2 is supportive.

According to the new studies of the surface features of mars there are some channels found through the plates of mars. At least one of the meandering channels on the surface of Mars can possibly be explained by the fact that flowing lava can create or carve patterns that resemble the riverbeds and canyons cut by water.

NASA delivered this talk on these findings on March 4, 2010, at the 41st Lunar and Planetary Science Conference at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

The possibility of discovering life on Mars is supposed to be affected by the question of whether the channels on Mars were produced by lava or by water.

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Answer:

ionec ,covalent ,molecular

The gas that has a volume of 752 mL at 1.98 atm and 62°C is most likely NO₂ (option D).

The volume of a sample of gas can be calculated using the following formula:

PV = nRT

Where;

According to this question, the volume of a sample of gas (2.49 g) was 752 mL at 1.98 atm and 62°C. The number of moles is as follows:

1.98 × 0.752 = n × 0.0821 × 335

1.489 = 27.5n

n = 0.054mol

molar mass of the gas = 2.49g ÷ 0.054mol = 45.99g/mol

The gaseous substance with the molar mass of 45.99g/mol is NO₂.

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Answer:

Alkali gases

Explanation:

Noble gases - Group 18

Alkaline Earth Metals - Group 2

Transition metals - Group 3 - 12

Alkali gases do not exist on the periodic table

Molality is defined as the number of moles of solute present in 1L of solution.

Molality (M) = No of moles of solute / 1 L of solution

Litre of solution = No of moles of solute / Molality

Molality = 0.220M

No of moles= 0.0170 mol

Volume in L = 0.0170/0.220

= 0.0772 L

Volume in mL = 77.27 mL

What is mole?

Therefore, Volume in ml of 0.220 m hbr solution is required to produce 0.0170 moles is 77.27 mL.

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Answer: 1 mole of an ionic compound is the number of grams equal to its formula weight (FW) and is known as its molar mass.  

Explanation: Hope this helped :)

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 1 mole of an ionic compound is equal to the molar mass or  formula weight.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. stoichiometry in a reaction represents the number of moles of reactant and products in a balanced chemical equation.

Mathematically,

mole =given mass ÷ molar mass

The molar mass of such an ionic compound is defined as the amount of grams equal towards its formula weight (FW).

Therefore, 1 mole of an ionic compound is equal to the molar mass or  formula weight.

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By dividing the number of moles by the number of litres of water utilised in the solution, we can compute the molar concentration. Ca2+ is present in the initial CaCl2 solution at a 42 mEq/L concentration.

Molar concentration is defined.

Molarity, which is stated as the quantity of substance per unit volume of solution, is a measurement of the concentration of a chemical species, particularly a solute, in solution.

As a result, to determine the molar concentration, we will divide the number of moles by the number of litres of water used in the solution. Ca2+ is present in the initial CaCl2 solution at a 42 mEq/L concentration.

equation:-

[tex]1 :1 stoichiometry, 36.8mL of 1.69 EDTA solution.[/tex]

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Answer:

A

Explanation:

A

The application of force in the direction of the motion of an object. The second scenario involves applying force to a moving item that is traveling in the opposite direction.

A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. A force has both a direction and a magnitude.

Force is used to describe a body's tendency to modify or change its state as a result of an external cause. When force is applied, the body can also alter its size, shape, and direction.

A push or pull that an object experiences as a result of interacting with another item is known as a force. Every time two items interact, a force is exerted on each of the objects. The force is no longer felt by the two objects when the interaction ends.

Thus, Force applied to an item in motion that originates in any direction constitutes the third situation where force is created.

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toThis is a Valid statement about pressure .

What is pressure?

Pressure is continues physical force exerted on or against an object by something in contact with.

Sol-We know the idol gas equation, idyl gas equation. P v is equals to n r t. We can write the equation. As of the p is equal to n r upon v into p. Now n r upon v is equals to constant, is equals to constant. So we can write. P is equal to c into t. So now let us consider the ambient by the  condition, which is p not equals to 101325 p. A and t naught is equal to 90 degrees. Fahrenheit will convert this value kelvin and get 5048.37 kelvin. So the value of p, not anti. Note is 0 now from the modified idol equation. We are have p equal to c t, so we can write it as a p. Not is equal to c and t not so the we'll substitute the values 1013 to 5 p, a which is equal to c 2348.37 kelvin.

So here we get the value of c, which is equals to 43.147. So from this we can say that the change by  in pressure for the 10 degree temperature by the  drops so here delta equal to delta, which is equal to the 10 degrees fahrenheit. We can again convert this value in the kelvin and we get 260.93 kelvin, so delta to  p is equal to c into delta. This will be delap equals to 43.147, as we get the value of c and 2 red 60.93 kelvin p, so delta p is equal to 43.147 So from this we can say We can again convert this value in the kelvin by it  and we are get the 260.93 kelvin, so delta p is equal to c into delta. This will be delap equals to 43.147, as we get the value of c and 2 red 60.93 kelvin p, so delta p is equal to 43.147 and 260.93 kelvin upon 694.75 p s. I so we are finally get the value of delta p, which is equals to 1.63 p s. I.

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The two which she should use to check whether the sublimation of camphor would reduce if pepper seeds are placed along with it are P and S and is denoted as option C.

This is referred to as the transition of a substance directly from the solid to the gas state, without passing through the liquid state and an example is iodine crystal.

Options P and S are both open boxes and one contains only camphor while the other contains camphor and pepper seeds which is used to compare their rate of sublimation to know if the addition of the seeds caused a reduction.

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Answer:

Cl2 + 2 e- or E

Explanation:

MnO₄⁻ + 8CL⁻ → Mn²⁺ + 4CL₂  is the balanced equation for given reaction.

The balanced equation for MnO₄⁻ + CL⁻ → Mn²⁺ + CL₂  is

= MnO₄⁻ + 8CL⁻ → Mn²⁺ + 4CL₂

Each element has an equal number of atoms on both sides thanks to the balancing process. Eight chloride ions are needed to produce the four chlorine molecules necessary to maintain equilibrium between the oxygen and chlorine atoms on the left. By following the law of conservation of mass, this equation makes sure that no atoms are created or destroyed during the chemical reaction.

permanganate ion MnO₄⁻ reacts with chloride ion CL⁻  to yield manganese(II) ion and chlorine gas (Mn²⁺ + CL₂).

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Given the nuclear reaction above, the following applies;

Nuclear reaction is a process such as the fission of an atomic nucleus, or the fusion of one or more atomic nuclei and/or subatomic particles in which the number of protons and/or neutrons in a nucleus changes.

The reaction products may contain a different element or a different isotope of the same element.

Alpha decay is a radioactive decay by emitting an alpha particle, which is a positively charged nucleus of a helium-4 atom (consisting of two protons and two neutrons).

Based on the above explanation, the above-mentioned applies when radium atom undergoes alpha decay.

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The charge on the elements when they form ions would be as follows:

The charges formed by ions of elements depend primarily on the valence electron of the atoms of the element. In other words, the charges on ions of elements depend on the number of electrons in the outermost shell of the atom of the element.

Every element move towards assuming an octet state, a state of completely filled outermost shell with 8 electrons. Thus, atoms tend to either readily donate or accept electrons in order to assume an octet state.

Thus:

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