The presence of heterogeneous catalyst will not affect the:
Select the correct answer below:
A. molecularity of the overall chemical equation
B. molecularity of the rate-determining step
C. both of the above
D. none of the above

Answer:

Global winds are the main belts of wind that move in a particular direction across the earth

Answer:

Global winds are the main belts of wind that move in particular directions across the Earth.

Explanation:

All wind is caused by the uneven heating of Earth's surface, which sets convection currents in motion. Convection currents on a large scale cause global winds; convection currents on a small scale cause local winds.

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A. the energy released in eV is 2.950 x 10^-21 eV.

B.  the energy released in joules is 2.952 x 10^-15 J.

Given: Energy released by the decay of 3H nucleus = 0.01841 MeV

We know that 1 eV = 1.602 x 10^-19 J

(a) Converting energy in MeV to eV:

0.01841 MeV x (1.602 x 10^-19 J/eV) = 2.950 x 10^-21 J

Therefore, the energy released in eV is 2.950 x 10^-21 eV.

(b) Converting energy in MeV to joules:

1 MeV = 1.602 x 10^-13 J

0.01841 MeV x (1.602 x 10^-13 J/MeV) = 2.952 x 10^-15 J

Therefore, the energy released in joules is 2.952 x 10^-15 J.

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A polymer is a large molecule made of repeating subunits, known as monomers. Polymers can be natural, such as proteins and cellulose, or synthetic, such as plastics.

Natural polymers are derived from biological sources, while synthetic polymers are chemically synthesized. Polymers have a wide range of applications due to their diverse properties and versatility.

They can be flexible or rigid, transparent or opaque, and can have various mechanical, thermal, and chemical properties. Synthetic polymers are commonly used in everyday materials like plastics, fibers, and adhesives.

Natural polymers find applications in areas such as food, medicine, and textiles.

The structure and properties of polymers can be tailored by adjusting the choice of monomers, the polymerization process, and the presence of additives or cross-linking agents.

Overall, polymers play a crucial role in numerous industries and have a significant impact on modern society.

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Answer:

71.7 L

Explanation:

Using the ideal gas equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/Kmol)

T = temperature (K)

According to the information provided in this question;

P = 1 atm (STP)

V = ?

n = 3.2mol

T = 273K (STP)

Using PV = nRT

V = nRT/P

V = 3.2 × 0.0821 × 273/1

V = 71.7 L

Answer:

Number of moles = 0.075 mol

Explanation:

Volume = 500.0 mL = 0.5 (Converting to L by dividing by 1000)

Molarity = 0.15 M

Number of moles = ?

The relationship between the quantities is given as;

Molarity  = Number of moles / Volume

Number of moles = Molarity * Volume

Number of moles = 0.15  * 0.5

Number of moles = 0.075 mol

Enabling auto-tagging allows for automatic tagging of certain attributes or information within a system or program.

This can save time and effort by eliminating the need for manual tagging and ensuring accuracy in the tagging process. Enabling auto-tagging is a process that allows an analytics or advertising platform to automatically assign tags to specific elements in a campaign or website. This helps in tracking and organizing data more efficiently, making it easier to analyze and optimize your online presence. When auto-tagging is enabled, the system will automatically generate and add tags to your URLs or content without the need for manual input, saving time and effort.

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Answer:

It helps you......

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The number of moles of hydrochloric acid, HCl in 50 cm³ of 0.2 M hydrochloric acid, HCl solution is 0.01 mole

We'll begin by listing the various parameters given in the question. This is given below:

The number of mole of HCl in the solution can be obtained as follow:

Molarity = Number of mole / volume

Cross multiply

Number of mole = molarity × volume

Number of mole = 0.2 × 0.05

Number of mole = 0.01 mole

Thus, the number of mole in the solution is 0.01 mole

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Yes, the elements that will be formed in a fusion reaction can be predicted by looking at the combining nuclides.

A nuclear reaction is one in which the nucleus of elements undergo rearrangement to form new nuclei and release energy.

Mass and charge of reactant and product nuclides are conserved in a nuclear reaction.

This implies that we can look at the reactant nuclides and predict the products of the nuclear fusion . This can be done by studying the combining nuclides and taking into cognizance, the balance of mass and charge on both sides of the nuclear reaction equation.

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Answer: Yes it is possible

Explanation: The element that is formed in a fusion can be predicted by looking at the combining elements or nuclides in this case it would be the hydrogen isotopes

The correct answer is A. gas. Pressure has a significant impact on the solubility of gases in liquids.

According to Henry's Law, the solubility of a gas in a liquid is directly proportional to the pressure of the gas above the liquid. As pressure increases, the solubility of the gas in the liquid also increases. This is because an increase in pressure above the liquid increases the number of gas molecules colliding with the liquid's surface. These collisions result in more gas molecules dissolving in the liquid. On the other hand, pressure does not have a significant effect on the solubility of solids or liquids in liquids. This is because the solubility of solids and liquids in liquids is determined mainly by the chemical nature of the substances involved, temperature, and the presence of other solutes. The pressure exerted on the system has little impact on these factors.  In summary, pressure plays a crucial role in determining the solubility of gases in liquids, while its impact on the solubility of solids and liquids in liquids is negligible.

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The equilibrium constant of the reaction from the calculation that has been done is 0.154

The concentrations (or partial pressures) of reactants and products in chemical equilibrium for a specific chemical reaction are related by the equilibrium constant (K), a mathematical equation. It quantifies the degree to which an equilibrium has been reached in a reaction.

We have the equation of the reaction as;

A(g) + B(g) ⇔C(g)

Thus;

Keq = 45.83/11.23 * 26.50

Keq = 0.154

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Answer:

The empty space between the atomic cloud of an atom and its nucleus is just that: empty space, or vacuum. ... Electrons are thus 'spread out' quite a bit in their orbits about the nucleus. In fact, the wave-functions for electrons in s-orbitals about a nucleus actually extend all the way down into the nucleus itself.

Answer:

D

Explanation:

tissues are used to make organs and depending on the organ certain types of tissue can be used

In the reaction of an alkyl bromide with sodium iodide in acetone, the resulting alkyl iodide may be attacked by a bromide ion due to a possible nucleophilic substitution reaction. During the initial reaction, the sodium iodide reacts with the alkyl bromide to form an alkyl iodide and sodium bromide.

However, if there is excess alkyl bromide present, the resulting alkyl iodide may undergo a second substitution reaction with the excess alkyl bromide acting as the nucleophile. This can occur because the alkyl iodide is still reactive and can be attacked by the bromide ion, which is also present in the reaction mixture. The resulting product would be a mixed alkyl halide containing both iodine and bromine.

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Henry's law determines how much a certain gas will dissolve in a certain liquid

The law that determines how much a certain gas will dissolve in a certain liquid is known as Henry's Law. This law states that the amount of gas dissolved in a liquid is directly proportional to the partial pressure of the gas above the liquid. In other words, as the partial pressure of the gas increases, more gas will dissolve in the liquid. This relationship is affected by the temperature of the liquid, with higher temperatures typically resulting in lower gas solubility.

Additionally, the nature of the gas and liquid can impact how much gas will dissolve in the liquid. For example, polar liquids tend to dissolve polar gases more readily than non-polar gases. Understanding the principles of Henry's Law is important in a variety of applications, from industrial processes to environmental studies.

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Answer:

We can start by finding the amount of iron used in the reaction:

Iron (Fe) is the limiting reagent since it is completely used up in the reaction.

Molar mass of Fe = 55.845 g/mol

Moles of Fe = mass / molar mass = 3.58 g / 55.845 g/mol = 0.064 moles

The balanced chemical equation for the reaction is:

4Fe + 3O2 → 2Fe2O3

From the equation, we can see that 4 moles of Fe react with 3 moles of O2 to produce 2 moles of Fe2O3.

Moles of Fe2O3 produced = mass / molar mass = 5.00 g / (2 x 159.69 g/mol) = 0.01567 moles

Since 4 moles of Fe reacts with 2 moles of Fe2O3, the theoretical yield of Fe2O3 from 0.064 moles of Fe is:

Theoretical yield of Fe2O3 = (0.064 mol Fe) x (2 mol Fe2O3 / 4 mol Fe) x (2 x 159.69 g/mol Fe2O3) = 12.746 g

The percentage purity of iron is:

Percentage purity = (actual yield / theoretical yield) x 100%

Percentage purity = (5.00 g / 12.746 g) x 100% = 39.26% (rounded to two decimal places)

Therefore, the iron wire is 39.26% pure.

Answer:

B) we will convert the 10 g of NaCl into moles.

Explanation:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

we will convert the 10 g of NaCl into moles.

Number of moles of NaCl:

Number of moles = mass/molar mass

Number of moles = 10 g/ 58.44 gmol

Number of moles = 0.17 mol

1 Kg = 1 L

Molarity = 0.17 mol / 2 L

Molarity = 0.085 mol/L

Molarity = 0.085 M

Answer:

B. Convert the 10g of NaCl to moles of NaCl

The accuracy of an experiment depends on systematic errors because systematic errors are those that occur consistently and affect the results of the experiment in a predictable way. The precision of an experiment depends on random errors because random errors are those that occur unpredictably and can affect the results of the experiment in an unpredictable way.

Systematic errors can be caused by factors such as faulty equipment, incorrect measurement techniques, or biased sampling methods. If these errors are not addressed, they can lead to inaccurate results. On the other hand, These random errors can be caused by factors such as fluctuations in environmental conditions, human error, or unexpected variations in the experiment. Because random errors are unpredictable, they can affect the precision of the experiment and make it difficult to replicate the results.

Overall, it is important to minimize both systematic and random errors in order to ensure the accuracy and precision of an experiment. This can be done by using accurate and reliable equipment, following proper measurement techniques, and using appropriate sampling methods.

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\(PO_4^{-3}\) and \(NH^{4+}\) are polyatomic anions composed of two or more atoms.

A polyatomic ion is an ion composed of two or more atoms. Examples: The hydroxide cation (\(OH^-\)) and the phosphate cation (\(PO_4^{3-}\)) are both polyatomic ions.

\(PO_4^{-3}\) and \(NH^{4+}\) are the polyatomic anions because both contain more than 1 atom.

Hence,\(PO_4{-3}\) and \(NH^{4+}\) are polyatomic anions composed of two or more atoms.

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The image that has been shown is the image of a network solid.

A network solid, often referred to as a covalent network solid or an atomic solid, is a kind of solid in which the individual atoms are connected by a network of covalent connections that runs the length of the structure. Every atom in a network solid is bound to its neighbors, forming a three-dimensional lattice or framework.

Network solids do not contain separate molecules or ions held together by weak intermolecular forces, in contrast to other forms of solids like ionic solids or molecular solids.

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Answer:

Explanation:

network A. my sister had the question just now and she didnt know it so she guested and got it right!! :)

The chemical symbol for the element that makes up most of Earth's core is Fe, which stands for iron. Iron makes up approximately 85% of the Earth's core, with the remainder being nickel and other trace elements.

The high abundance of iron in the Earth's core is responsible for the planet's magnetic field, which is essential for life on Earth as it helps to protect us from harmful solar radiation. The study of the Earth's core and its composition is important for understanding the planet's history and evolution, as well as for predicting future changes in the Earth's magnetic field. The element that makes up most of Earth's core is iron. Its chemical symbol is Fe, which is derived from the Latin word "ferrum." Iron is the primary component of the inner and outer core, accounting for about 85% of its composition. This element plays a vital role in Earth's geophysics, including the generation of the planet's magnetic field.

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Answer:

relative humidity

Explanation:

Answer:

The pressure increases

Explanation:

In this action it is best to apply Boyle's law to resolve the problem. This is an interplay between Volume, Pressure and Temperature.

The partial pressure of oxygen in the deep-sea divers' breathing mixture is 150 mm Hg.

To determine the partial pressure of oxygen, we need to subtract the pressures exerted by helium and carbon dioxide from the total pressure of the mixture.

Given:

Total pressure = 760 mm Hg

Pressure of helium = 609 mm Hg

Pressure of carbon dioxide = 1 mm Hg

We can calculate the partial pressure of oxygen using the following formula:

Partial pressure of oxygen = Total pressure - Pressure of helium - Pressure of carbon dioxide

Partial pressure of oxygen = 760 mm Hg - 609 mm Hg - 1 mm Hg

Partial pressure of oxygen = 150 mm Hg

The partial pressure of oxygen in the breathing mixture used by deep-sea divers is 150 mm Hg. This value is essential because it indicates the amount of oxygen available for respiration at higher pressures underwater. Deep-sea divers use a mixture of helium, oxygen, and carbon dioxide to counteract the effects of increased pressure on their bodies. The high partial pressure of oxygen ensures that divers receive an adequate supply of oxygen, even in the challenging deep-sea conditions.

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5 monocholrination products can be formed (constitutional isomers only) in the presence of light.

What are Monochlorination products?

Monochlorination products refer to the different compounds that can be formed when a molecule reacts with chlorine (Cl₂) and undergoes a substitution reaction where one hydrogen atom is replaced by a chlorine atom. This reaction is known as monochlorination because only one chlorine atom is added to the molecule.

When CH₃CH₂CH₂CH₂CH₂CH₃ (hexane) reacts with Cl₂ in the presence of light, monochlorination occurs. Each of the six carbon atoms in hexane can potentially be chlorinated, leading to the formation of multiple constitutional isomers.

The five constitutional isomers that can be formed are:

1-chlorohexane: CH₃CH₂CH₂CH₂CH₂CH₂Cl

2-chlorohexane: CH₃CH₂CH₂CH(Cl)CH₂CH₃

3-chlorohexane: CH₃CH₂CH(Cl)CH₂CH₂CH₃

4-chlorohexane: CH₃CH(Cl)CH₂CH₂CH₂CH₃

5-chlorohexane: CH(Cl)CH₂CH₂CH₂CH₂CH₃

Therefore, 5 monocholrination products can be formed (constitutional isomers only) from the reaction of CH₃CH₂CH₂CH₂CH₂CH₃ with Cl₂ in the presence of light.

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