which of the following is used to reduce so2 emissions from coal-burning power plants? responses catalytic converters catalytic converters ultrafine mechanical filters ultrafine mechanical filters electrostatic precipitators electrostatic precipitators wet-scrubber units wet-scrubber units afterburners

Answer:

Services raise the pH in the hair to a alkaline state in order to soften and swell the hair shaft. Disulfide, hydrogen, salt. Side bonds are responsible for the strength and elasticity of the hair. Altering these is what make wet setting, thermal styling, permanent waving, curl reforming, and relaxing possible

A pH of 7 is neutral, a pH below 7 is acidic, and pH above 7 is alkaline. ... Chemical Texturizers raise the pH of the hair to an alkaline state in order to soften and swell the hair shaft. This action lifts the cuticle layer, and allows the solution to reach the cortex layer where restructuring takes place.

Explanation:

Answer:

3.33 tanques de O₂

Explanation:

Basados en la reacción:

2C₂H₂(g) + 5O₂(g) → 4CO₂(g) + 2H₂O(g)

2 moles de acetileno reaccionan con 5 moles de oxígeno produciendo 4 moles de dióxido de carbono y 2 moles de agua

La ley de Avogadro dice que el volumen de un gas bajo temperatura y presión constantes es proporcional a las moles de este gas. Así, como 2 moles de acetileno reaccionan con 5 moles de oxígeno, los litros de O₂ necesarios para quemar 9340L de acetileno son:

9340 L C₂H₂ × (5 moles O₂ / 2 moles C₂H₂) = 23350L de O₂

Si un tanque contiene 7x10³ L de O₂ serán necesarios:

23350L O₂ ₓ (1 tanque / 7x10³L) = 3.33 tanques de O₂

Answer:

series bro. i think bro

Answer:

they are in a parallel

Explanation:

this is because the string is also connected to the other bulbs

The pair of acetic acid and sodium hydroxide consist of a weak acid and a strong base. The correct option is (c).

In a chemical reaction, the base can either be strong or weak, and the acid can either be strong or weak. Acids are substances that donate protons, and bases are substances that accept protons. In this question, the given options are sulfuric acid, sodium hydroxide, acetic acid, ammonia, acetic acid, sodium hydroxide, and nitric acid, calcium hydroxide.

Sulfuric acid is a strong acid, and sodium hydroxide is a strong base. Ammonia is a weak base, and nitric acid is a strong acid. Thus, the option (b) and (d) are incorrect.

Thus, the pair of acetic acid and sodium hydroxide consist of a weak acid and a strong base. The correct option is (c).

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Answer:

it means that it's less dense

Explanation:

its not tightly compacted

A renewable fuel called ethanol is created from various plant elements known as "biomass."

Thus, Ethanol is used to oxygenate more than 98% of the gasoline sold in the United States. E10 (10% ethanol, 90% gasoline) is typically added to gasoline, which lowers air pollution.

Ethanol is also available in the form of E85 (also known as flex fuel), which can be used in vehicles that can run on any gasoline and ethanol mixture up to an 83% concentration.

Since ethanol has a greater octane rating than gasoline, it offers superior mixing qualities. Engine knocking is prevented and drivability is ensured by minimum octane number regulations for fuel.

Thus, A renewable fuel called ethanol is created from various plant elements known as "biomass."

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Answer: The answer is 457.9

Explanation: Realistically all you have to do is add both of the temperatures and then you can figure out the original heat. Since the heat drops 426.7 degrees and it comes to 31.2 degrees its 426.7 + 31.2 = 457.9.

Answer:

in fractional distillation we look at different boiling point of the mixture

Explanation:

argon will be separated from the mixture first because it has the lowest boiling point

The mixture of elements of gases of neon,argon, krypton and xenon can be separated using  fractional distillation as the  have difference in their boiling points.

An element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

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Answer:B

Explanation:

Answer:

Heterotrophic metabolism.

Explanation:

Heterotrophic metabolism. As stated above, heterotrophic (or organotrophic) bacteria require organic molecules to provide their carbon and energy. ... Sugar metabolism produces energy for the cell via two different processes, fermentation and respiration

Answer:

Heterotrophic metabolism. As stated above, heterotrophic (or organotrophic) bacteria require organic molecules to provide their carbon and energy. ... Sugar metabolism produces energy for the cell via two different processes, fermentation and respiration.

Explanation:

hoped this helped:D

The number of moles of nickel(II) iodide (NiI2) present in a sample containing 7.18 moles of iodide ions is 3.59 moles.

To calculate the moles of nickel(II) iodide, we need to consider the stoichiometry of the compound. The formula of nickel(II) iodide is NiI2, indicating a 1:2 ratio of nickel to iodide ions. Therefore, for every 2 moles of iodide ions, we have 1 mole of nickel(II) iodide.
Given that the sample contains 7.18 moles of iodide ions, we can calculate the moles of nickel(II) iodide using the stoichiometric ratio. Moles of NiI2 = Moles of I- / 2. Plugging in the values, we find that Moles of NiI2 = 7.18 moles / 2 = 3.59 moles. Hence, there are 3.59 moles of nickel(II) iodide in the sample.

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Green plants use two molecules, carbon dioxide (CO₂) and water (H₂O), to make glucose through the process of photosynthesis.

During photosynthesis, plants capture energy from sunlight and convert it into chemical energy stored in glucose. The process occurs in the chloroplasts, which contain the pigment chlorophyll that gives plants their green color. Carbon dioxide is obtained from the atmosphere through tiny openings in the plant's leaves called stomata.

Water is absorbed by the roots and transported to the leaves through specialized tissues called xylem. In the first stage of photosynthesis, known as the light-dependent reactions, light energy is absorbed by chlorophyll, which triggers a series of chemical reactions that produce energy-rich molecules like ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).

These energy carriers are then utilized in the next stage. In the second stage, called the light-independent reactions or the Calvin cycle, carbon dioxide from the atmosphere enters the leaf and combines with the energy-rich molecules ATP and NADPH.

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The pH of the solution that has [OH⁻]= 5.2 x 10⁻⁴ M is (d) 10.72.

To find the pH of the solution with [OH⁻] = 5.2 x 10⁻⁴ M, we need to first find the [H⁺] concentration using the relationship between [H⁺] and [OH⁻], which is given by the ion product of water (Kw):

Kw = [H⁺] x [OH⁻]

Kw for water is 1.0 x 10⁻¹⁴ at 25°C.

Now, calculate [H⁺]:

[H⁺] = Kw / [OH⁻] = (1.0 x 10⁻¹⁴) / (5.2 x 10⁻⁴) = 1.92 x 10⁻¹¹ M

Now, to find the pH, we use the pH formula:

pH = -log[H⁺]

pH = -log(1.92 x 10⁻¹¹) ≈ 10.72

So, the pH of the solution is approximately 10.72, which corresponds to answer choice d.

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Answer:

Density, D = 2g/cm^3

Explanation:

Given the following data;

Length = 2cm

Width = 3cm

Height = 2cm

Mass = 24g

Density = ?

Volume of a rectangular solid (V) = Length × Weight × Height

Therefore, V = L× W × H

Substituting the values, we have;

\(V = 2 *3 * 2 = 12\)

V = 12cm

Density can be defined as the ratio of mass to volume i.e mass all over volume.

Mathematically, \(Density = \frac{Mass}{Volume}\)

\(D = \frac{M}{V}\)

Substituting the values, we have;

\(D = \frac{24}{12}\)

Density, D = 2g/cm^3

Hence, the density of the rectangular solid is 2g/cm^3.

The balanced chemical equation for the reaction between formic acid (HCOOH) and sodium hydroxide (NaOH) is: The Correct option is B the pH after 5.00 mL of NaOH has been added is 4.26.

\(HCOOH + NaOH → NaCOOH + H_{2} O\)

This indicates that 1 mole of HCOOH reacts with 1 mole of NaOH.

First, let's calculate the number of moles of HCOOH present in the initial 30.00 ml solution:

moles of HCOOH = (0.125 mol/L) × (0.03000 L) = 0.00375 mol

Since the stoichiometry of the reaction is 1:1, 5.00 ml of 0.175 M NaOH corresponds to:

moles of NaOH = (0.175 mol/L) × (0.00500 L) = 0.000875 mol

To calculate the moles of HCOOH remaining after the addition of NaOH:

moles of HCOOH = initial moles - moles of NaOH added

= 0.00375 mol - 0.000875 mol

= 0.002875 mol

Now we can use the Henderson-Hasselbalch equation to calculate the pH:

pH = pKa + log([A-]/[HA])

where pKa is the dissociation constant of formic acid, [A-] is the concentration of the formate ion (HCOO-), and [HA] is the concentration of the undissociated formic acid (HCOOH).

The pKa of formic acid is 3.75, and the concentrations of HCOO- and HCOOH can be calculated using the moles and volumes:

[A-] = moles of NaCOOH / total volume

= 0.000875 mol / 0.03500 L

= 0.025 mol/L

[HA] = moles of HCOOH / total volume

= 0.002875 mol / 0.03500 L

= 0.082 mol/L

Substituting into the Henderson-Hasselbalch equation:

pH = 3.75 + log(0.025/0.082)

= 4.26

Therefore, the pH after 5.00 mL of NaOH has been added is 4.26.

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Answer:

109.5 Degrees

Explanation:

Because CH4 is sp4 hybridized (Carbon is bonded to the 4 Hydrogens), the geometry of the molecule must be tetrahedral. Tetrahedral moleculues have bond angles of 109.5 Degrees.

Answer:

I think A

Explanation:

The NSN test search is used to locate test reports that provide comprehensive information about the testing and evaluation of specific products or items.

The National Stock Number (NSN) test search is used to locate test reports on various products or items. Test reports provide detailed information about the testing and evaluation of a particular product's performance, quality, safety, or compliance with specific standards or requirements. These reports are often conducted by independent testing laboratories or organizations to assess the characteristics and capabilities of the product.

The NSN test search allows users to search for test reports based on the NSN, which is a unique identification number assigned to each item in the federal supply system. By inputting the NSN into the search, individuals or organizations can access relevant test reports associated with that specific item or product.

The test reports obtained through the NSN test search can be valuable for various purposes, such as quality assurance, product development, procurement decisions, or regulatory compliance. They provide important insights into the performance and reliability of the item being tested, allowing users to make informed decisions based on objective evaluation and testing data.

In summary, the NSN test search is used to locate test reports that provide comprehensive information about the testing and evaluation of specific products or items.

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Answer:

c

Explanation:

a p e x :)

The charge an element would have if it lost or gained electrons. Hence, option C is correct.

Oxidation: The loss of electrons

Reduction: The gain of electrons

Oxidation number: the charge based on the number of electrons assigned to an atom as compared to the neutral atom.

Hence, the charge an element would have if it lost or gained electrons is the oxidation number.

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Answer:

The amount of matter that an object contains is called its mass. Mass is a fundamental property of matter and is typically measured in kilograms (kg) or grams (g) using a balance or a scale. It is different from weight, which is the force that gravity exerts on an object with mass. Mass remains constant regardless of the object's location, whereas weight can vary based on the object's position relative to a gravitational field.

Please give brainliest..

Answer: mass

Explanation:

A buffer system is designed to maintain a specific pH level (option c).

Buffer systems are essential in biological and chemical processes as they prevent significant changes in pH by resisting alterations in acidity or alkalinity. They consist of a weak acid and its conjugate base (or a weak base and its conjugate acid). When an acid or base is added to the buffer system, the weak acid or base reacts with the added component, minimizing the change in pH.

The buffer system achieves this by absorbing or releasing hydrogen ions (H+) to maintain a relatively constant pH. This ability to regulate pH is crucial for various physiological functions, such as maintaining proper enzyme activity and cellular processes.

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Answer:

2

Explanation:

...

Answer:

orbital is the answer

I took the test

Approx mass(amu) of Particles proton, neutron and  electron is 1, 1, 0.

Electrons are found outside the nucleus in electron shells, not inside the nucleus. Therefore, the location of electrons should be listed as "Extracellular space (outside nucleus)." The approximate mass of an electron is about 1/1836 amu, which is negligible compared to the mass of a proton or neutron. Therefore, the mass of an electron is usually listed as "negligible" or "approximately 0."

Protons are positively charged subatomic particles found in an atom's nucleus. A proton has a charge of +1 and an approximate mass of 1 atomic mass unit (amu). The atomic number of an element is determined by the number of protons in its nucleus.

Neutrons are neutral subatomic particles found in an atom's nucleus. A neutron's charge is zero, which means it has no charge. A neutron has an approximate mass of 1 amu, which is similar to the mass of a proton. The number of neutrons in an atom's nucleus can vary, resulting in isotopes of the same element.

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Correct question should be

Using the drop-down menus, complete the table to summarize the properties of the different subatomic particles. (options are zero and one for a, b, and c)

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When comparing the dissolution of AgBr by\(Na_{2}S_{2}O_{3}\) to the dissolution of AgCl by NH3, the statement "More Ag+ resulting from the dissolution of AgBr will be present in solution at any given time, because Ksp, AgBr > Ksp, AgCl" is true.

The solubility product constant (Ksp) represents the equilibrium constant for the dissolution of a sparingly soluble salt. It indicates the extent to which a salt dissolves in a solvent. In this case, the Ksp values for AgBr and AgCl are given as 5.0×10−13 and 1.8×10−10, respectively.

A higher Ksp value indicates a higher solubility of the salt and a greater concentration of the dissolved ions in the solution. Since Ksp for AgBr is smaller than Ksp for AgCl, it means that AgCl is more soluble than AgBr. Therefore, more Ag+ ions resulting from the dissolution of AgBr will be present in solution at any given time compared to AgCl.

Hence, the correct statement is "More Ag+ resulting from the dissolution of AgBr will be present in solution at any given time, because Ksp, AgBr > Ksp, AgCl."

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The correct answer is B) zymomonas. Ethanolic fermentation, which is the process of converting sugars into ethanol (alcohol) and carbon dioxide by yeast, is commonly used in the production of beverages like beer, wine, and pulque.

While there are various microorganisms that can carry out fermentation, yeast is the primary organism involved in ethanolic fermentation.

Zymomonas is a type of bacteria that is known for its ability to perform ethanolic fermentation. It can efficiently convert sugars into ethanol and carbon dioxide, making it suitable for industrial applications such as the production of alcoholic beverages.

Clostridium, Leuconostoc, Lactobacillus, and Propionibacterium are other types of microorganisms, but they are not primarily involved in ethanolic fermentation. They may have different metabolic pathways or be associated with other fermentation processes, but they are not the main organisms responsible for the production of ethanol in the context of beverage production.

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Answer:

Brick

Explanation:

.................

C. Continuous metabolic production of free hydrogen ions

The processes of creating and breaking down glucose molecules are both examples of metabolic pathways. A metabolic pathway is a chain of related chemical reactions that feed each other. The pathway takes in a single or extra beginning molecule and, through a sequence of intermediates, converts them into merchandise.

Metabolism (stated: meh-TAB-uh-Liz-um) is the chemical reactions within the body's cells that alternate meals into power. Our bodies want this strength to do the entirety from moving to wondering to growing. particular proteins in the body manipulate the chemical reactions of metabolism.

A metabolic product is a compound produced via the cells and is excreted to the extracellular medium. it can be produced in the number one metabolism, e.g. carbon dioxide, ethanol, acetate, or lactate, or an extra complicated one, e.g. a secondary metabolite or a heterologous protein secreted to the extracellular medium.

The question is incomplete. Please read below to find the missing content.

Which normal physiologic process contributes most to the need for acid-base balance

A. Continuous organ production of bicarbonate from carbonic acid

B. Continuous alveolar exchange of oxygen and carbon dioxide

C. Continuous metabolic production of free hydrogen ions

D. Continuous kidney formation of urine from blood

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