Do electrons attract hydrogen?

Answer:

Mass = 18.9 g

Explanation:

Given data:

Mass of Al₂O₃ formed = ?

Mass of Al = 10.0 g

Solution:

Chemical equation:

4Al + 3O₂      →       2Al₂O₃

Number of moles of Al:

Number of moles = mass/molar mass

Number of moles = 10.0 g/ 27 g/mol

Number of moles = 0.37 mol

Now we will compare the moles of Al and Al₂O₃.

                      Al          :          Al₂O₃

                       4           :            2

                     0.37        :         2/4×0.37 = 0.185 mol

Mass of Al₂O₃:

Mass = number of moles × molar mass

Mass = 0.185 mol × 101.9 g/mol

Mass = 18.9 g

Comparative study: Coagulation, GAC, and PAC for PFOS/PFOA removal in drinking water treatment. GAC/PAC demonstrated higher efficiency than coagulation.

Perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) are persistent organic pollutants that have been detected in drinking water sources worldwide. These compounds pose potential risks to human health due to their persistence, bioaccumulative nature, and adverse effects on various organ systems. To mitigate the presence of PFOS and PFOA in drinking water, various treatment methods have been explored. This study aims to compare the efficiency of coagulation, granular-activated carbon (GAC), and powdered-activated carbon (PAC) in removing PFOS and PFOA during drinking water treatment.

PFOS and PFOA are part of a larger group of per- and polyfluoroalkyl substances (PFAS) that have gained significant attention in recent years due to their widespread occurrence and potential health implications. These compounds are resistant to environmental degradation and have been used in various industrial and consumer applications, including firefighting foams, surface coatings, and water repellents.

In this study, water samples containing PFOS and PFOA were subjected to three treatment methods: coagulation, GAC adsorption, and PAC adsorption. Coagulation involved the addition of a coagulant (e.g., aluminum or iron salts) followed by flocculation and sedimentation. GAC and PAC adsorption involved the contact of water with a bed of respective carbon media to facilitate adsorption of PFOS and PFOA. The initial concentrations of PFOS and PFOA, contact time, pH, and carbon dosages were systematically varied to evaluate their effects on removal efficiency.

The comparative study revealed that all three treatment methods exhibited the ability to remove PFOS and PFOA from drinking water. However, significant differences were observed in their removal efficiencies. Coagulation showed moderate removal efficiency for both PFOS and PFOA, with removal rates ranging from 40% to 60%. GAC and PAC exhibited higher removal efficiencies, with removal rates exceeding 90% for both compounds. However, the effectiveness of GAC and PAC was influenced by factors such as contact time, pH, and carbon dosage. Optimal conditions were determined for each treatment method to achieve maximum removal efficiency.

The results indicate that GAC and PAC adsorption are more effective in removing PFOS and PFOA compared to coagulation. The adsorptive capacity of activated carbon provides a higher surface area for PFOS and PFOA adsorption, leading to superior removal efficiencies. Additionally, the extended contact time achieved through GAC and PAC beds allows for increased adsorption. However, it is important to note that the selection of the optimal treatment method should consider factors such as cost, ease of operation, and the presence of other contaminants in the water.

This comparative study highlights the superior performance of GAC and PAC adsorption over coagulation for the removal of PFOS and PFOA during drinking water treatment. Both GAC and PAC demonstrated high removal efficiencies, emphasizing their potential as viable treatment options for PFOS and PFOA-contaminated water sources. Further research and pilot-scale studies are warranted to evaluate the long-term performance, cost-effectiveness, and operational considerations associated with these treatment methods in real-world scenarios.

Learn more about Removal

brainly.com/question/27125411

#SPJ11

Answer:

They allow particles to stay close together.

The attractive forces (bonds) in a liquid are strong enough to keep the particles close together, but weak enough to let them move around each other. For example, Liquids are useful in car brake systems because they flow and cannot be compressed.

Explanation:

Hope this helps :)

Answer:

intermolecular attractive forces hold the molecules in contact, although they still have sufficient KE to move past each other. Intermolecular attractive forces, collectively referred to as van der Waals forces, are responsible for the behavior of liquids and solids and are electrostatic in nature.

Explanation:

I hope this helps!!!!!

Aspartame is an artificial sweetener that is 200 times sweeter than sucrose. The expected products from the hydrolysis of aspartame are;

Aspartame is a methyl ester that is gotten from aspartic acid and phenylalanine dipeptide. Aspartame is used by many food companies as a replacement for sugar. It is deemed suitable for consumption.

The hydrolysis of aspartame takes place in the small intestine. There, it is immediately transformed to methanol, phenylalanine, and aspartate.

Further products that are obtained after hydrolysis are; formaldehyde and formic acid.

Learn more here:

https://brainly.com/question/25225559

The answer is C.

The reactants are charcoal that is unlit + oxygen and the products are the burnt charcoal + energy.

So for every combustion reaction like this one, CxHy is the wood. So before you light the wood, it is actally a reactant together with oxygen, because without oxygen the wood will not burn. So under the influence of heat, wood produces substances like carbon dioxide and heat, the moment you see wood burning it it already producing products, CO2 and heat (which is the fire). This is a combustion reaction.

Combustion reaction is exothermic because it releases energy.

By using the molar masses of the products obtained in the reaction, we can calculate that the mass P₄O₆ formed is 125.1 g, and the mass of P₄O₁₀ formed is 162.2 g.

If the phosphorus (P) and oxygen (O₂) react completely, then the total mass of the reactants will be equal to the total mass of the products. So, if we label the mass of P₄O₆ as X, and the mass of P₄O₁₀ as Y, we know that:

X + Y = m(P) + m(O₂)

X + Y = 141.3 g + 146.0 g

X + Y = 287.3 g

X = 287.3 g - Y

Now, all the phosphorus has been used in the oxidation reaction. So, if we wanted to calculate the mass of phosphorus in P₄O₆, we would use its molar mass (M = 220 g/mol):

4 * 31 g : 220 g = mass of P in P₄O₆ : X

mass of P in P₄O₆ = 124 * X / 220

mass of P in P₄O₆ = 0.5636 * X

We can do the same for the mass of phosphorus in P₄O₁₀ (M = 284 g/mol):

4 * 31 g : 284 g = mass of P in P₄O₁₀ : Y

mass of P in P₄O₁₀ = 124 * Y / 284

mass of P in P₄O₁₀ = 0.4366 * Y

We know that the total mass of P used is 141.3 g, so:

mass of P in P₄O₆ + mass of P in P₄O₁₀ = 141.3 g

0.5636 * X + 0.4366 * Y = 141.3 g

If we substitute X from the first set of unknowns, we get:

0.5636 * (287.3 g - Y) + 0.4366 * Y = 141.3 g

161.9 g - 0.5636 * Y + 0.4366 * Y = 141.3 g

20.6 g = 0.127 * Y

Y = 20.6 g / 0.127

Y = 162.2 g

X = 287.3 g - 162.2 g

X = 125.1 g

You can learn more about the molar mass here:

brainly.com/question/12127540

#SPJ4

Answer:

Yes its vinegar

Explanation:

Actually \( \bold{\red {C_2H_4O_2}} \) is the formula for acetic acid which is found in vinegar.

Answer:

Because after increasing of temperature kinetic energy of molecules increases and reaction speed increases in forward or reverse direction.

Explanation:

Answer:

Explanation:

You have given the exact definition of what an atom is. It is the smallest entity that has all the same properties as a bunch of atoms put together.

Answer:

I love it

Explanation:

☁️ Answer ☁️

annyeonghaseyo!

Your answer is:

When electrons are lost, a positively charged ion is formed. When electrons are gained, a negatively charged ion is formed. (I like the car)

Hope it helps.

Have a nice day noona/hyung!~ ￣▽￣❤️

the new volume of the bag of chips in Denver will be approximately 633 ml. The new volume of the bag of chips in Denver will be 633 ml.

According to Boyle's Law, the product of pressure and volume is constant, assuming constant temperature. So, we can use the equation P₁V₁ = P₂V₂ to solve for the new volume (V₂). The initial pressure (P₁) is 1.00 atm, the initial volume (V₁) is 615 ml, the new pressure (P₂) is 0.775 atm, and the new temperature (T₂) is 290 K. Rearranging the equation, we get V₂ = (P₁ * V₁ * T₂) / (P₂ * T₁). Plugging in the values, we have V₂ = (1.00 atm * 615 ml * 290 K) / (0.775 atm * 300 K), which gives us V₂ ≈ 633 ml. Therefore, the new volume of the bag of chips in Denver will be approximately 633 ml.

learn more about volume here:

https://brainly.com/question/28058531

#SPJ11

The amount of energy required to eat 5.25 g of Titanium from 85.5 celsius to 132.5 celsius is 129 joules.

Absorbed or released amount of heat will be calculated by using the below formula as:

Q = mcΔT, where

m = mass of titanium = 5.25g

c = specific heat of titanium = 0.523 J/gram degree celsius

ΔT = change in temperature = 132.5 - 85.5 = 47 degree celsius

On putting these values on the above equation we get,

Q = (5.25)(0.523)(47) = 129 joules

Hence required heat is 129 joules.

To know more about absorbed heat, visit the below link:

https://brainly.com/question/8828503

The property of alcohols that is not affected by hydrogen bonding is molecular weight. Hydrogen bonding is a type of intermolecular force that occurs between hydrogen atoms and highly electronegative atoms such as oxygen, nitrogen, or fluorine. Alcohols have an -OH group, which makes them capable of hydrogen bonding. When alcohols undergo hydrogen bonding, the intermolecular attraction between the molecules increases, which affects various properties of alcohols.

Boiling point and miscibility with water are two properties of alcohols that are affected by hydrogen bonding. Due to the stronger intermolecular forces caused by hydrogen bonding, alcohols have higher boiling points and are more soluble in water.

The ability of alcohols to dissolve polar substances is also affected by hydrogen bonding. Alcohols are able to dissolve polar substances such as sugars, aldehydes, and ketones because of the polar -OH group and the ability to form hydrogen bonds with other polar molecules.

However, molecular weight is not affected by hydrogen bonding. The molecular weight of an alcohol is determined by the sum of the atomic weights of its constituent atoms. It is not influenced by the presence or absence of hydrogen bonding. Therefore, the correct answer is option E, none of the above.

In summary, hydrogen bonding affects the boiling point, miscibility with water, and ability to dissolve polar substances of alcohols, but it does not affect their molecular weight.

learn more about Hydrogen bonding

https://brainly.com/question/1426421

#SPJ11

Answer:

2. Periods

Explanation:

The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups. ... Elements in the periodic table are organized according to their properties.

A probing question that lies within the scope of physics could be: "What is the nature of dark matter and dark energy, and how do they influence the expansion of the universe?

Dark matter and dark energy are hypothetical forms of matter and energy that are believed to exist based on their observed gravitational effects on galaxies and the expansion of the universe.

Dark matter is thought to be a type of matter that does not interact with light or other electromagnetic radiation, while dark energy is an unknown form of energy that is causing the universe to expand at an accelerated rate.

Exploring the nature of dark matter and dark energy falls under the purview of physics because it involves understanding the fundamental forces and particles that govern the behavior of the universe.

Physicists study these phenomena by analyzing the gravitational effects they have on visible matter, conducting experiments to detect dark matter particles, and developing theoretical models to explain their properties and interactions.

Addressing this probing question requires the application of various branches of physics, such as cosmology, astrophysics, particle physics, and quantum mechanics.

Researchers employ observational data, theoretical frameworks, and advanced technologies to investigate the nature and origin of dark matter and dark energy, contributing to our understanding of the fundamental nature of the universe and its evolution.

For more such questions on probing question visit:

https://brainly.com/question/10753271

#SPJ8

Explanation:

To find the freezing point of the solution using the freezing point depression (ATf) and the freezing point of water, we can use the equation:

FPsolution = FPwater - ATf

where FPwater is the freezing point of pure water (0.00 °C). We know that ATf for this solution is 5.58 °C, as found in the previous step. Therefore:

FPsolution = 0.00 °C - 5.58 °C

FPsolution = -5.58 °C

However, a freezing point below zero degrees Celsius is not physically possible, since water freezes at 0.00 °C. Therefore, the solution would not actually freeze at this temperature, and we need to round the answer to zero °C:

FPsolution ≈ 0.00 °C

Therefore, the freezing point of the solution is around 0.00 °C, or the solution will not freeze at this temperature.

Answer:

reuse

Explanation:

The percentage abundance of isotopes of gallium is 61.56% is Ga-70.92 & 38.44% is Ga-68.93.

Gallium (31Ga) is composed of two stable isotopes: gallium-69 and gallium-71. Gallium-67 and gallium-68 are the most commercially important radioisotopes.

Gallium-67 (half-life: 3.3 days) is a gamma-emitting isotope (the gamma ray emitted immediately after electron capture) that is used in standard nuclear medical imaging procedures known as gallium scans. It is most commonly used as the free ion, Ga3+. It is the gallium radioisotope with the longest half-life.

Gallium has two naturally occurring isotopes: Ga-69 (mass 68.9256 amu, natural abundance 60.11%), and Ga-71 (mass 70.9247 amu, natural abundance 39.89%).

Gallium's average atomic mass =\(\frac{68.9257 +70.9249}{2}\)

=69.9253

Let x equal the percentage abundance of the first isotope.

by utilizing

AAM=\(\frac{W_{1}X_{1} * W_{2} X_{2} }{100}\)

\(69.70 = \frac{70.925 *X +68.926 * (1-X)}{100}\)

\(69.70 = 70.925X + 68.926 - 68.926 X\)

x = 61.56%

61.56% is Ga-70.92. (100-61.56)

& 38.44% is Ga-68.93.

The percentage abundance of isotopes of gallium is 61.56% is Ga-70.92 & 38.44% is Ga-68.93.

Learn more about isotopes here:-

https://brainly.com/question/2026214

#SPJ4

Answer:

I classify the following examples as Endothermic

Answer:

it is not a chemical change

Explanation:

it is a physical change as a paper towel can be  dried in the sun to turn into a regular paper towel thus proving that a paper towel absorbing water is a physical change not a chemical change

The correct answer is (D) 18-crown-6 depending on the specific conditions of the reaction.

The reaction shown is a nucleophilic substitution reaction where benzene is treated with a halide ion in the presence of a crown ether to increase the solubility of the salt formed. Crown ethers are cyclic polyethers that can encapsulate cations, making them more soluble in organic solvents.

The missing reagent needed to carry out the reaction is the crown ether that will help solubilize the NaBr salt formed. The most commonly used crown ether for this purpose is 18-crown-6, which can encapsulate Na+ cation.

Click the below link, to learn more about Nucleophilic substitution:

https://brainly.com/question/28325919

#SPJ11

The calcium ion has 18 protons, 20 neutrons, and 20 electrons.
The relationship between the components a and b is Inverse proportion.


The calcium ion (Ca2+) has a 2+ charge, indicating that it has lost 2 electrons from its neutral state. To determine the number of protons, neutrons, and electrons in the calcium ion, we need to consider its atomic number and mass.

The atomic number of calcium is 20, which indicates that it has 20 protons. Since the calcium ion has a 2+ charge, it means it has lost 2 electrons. Therefore, the number of electrons in the calcium ion is 20 - 2 = 18.

The mass number of calcium is 40 amu, which represents the total number of protons and neutrons. Since the calcium ion has 20 protons, the number of neutrons can be calculated as 40 - 20 = 20.

So, the correct option is: d. 18 protons, 20 neutrons, and 20 electrons

In the expression a∼1/b, the relationship between the components a and b is an inverse proportion. This means that as the value of a increases, the value of b decreases, and vice versa. The symbol ∼ represents the proportional relationship between a and 1/b, indicating that they are inversely related. Therefore, the correct answer is: Inverse proportion

To know more about calcium , click here, https://brainly.com/question/32135261

#SPJ11

Answer:

A leaf needs carbon dioxide and water for photosynthesis. ... For carbon dioxide to enter, the stomata on the surface of the leaf must be open. As you have seen, transpiration draws water from the roots into the leaf mesophyll.

I hope this helps you :)

The statement that best summarizes a consequence of the second law of thermodynamics is (c) "If the entropy of a system decreases, there must be a corresponding increase in the entropy of the universe."

The second law of thermodynamics states that the total entropy of an isolated system can only increase over time. Entropy is a measure of the amount of disorder or randomness in a system. In any energy conversion or chemical reaction, some of the energy becomes unusable or is lost as heat, which increases the entropy of the surroundings.

When the entropy of a system decreases, it means that the system becomes more ordered. However, this cannot happen without an increase in the entropy of the surroundings, such as the release of heat into the environment. This ensures that the total entropy of the universe increases, as dictated by the second law of thermodynamics.

In summary, if the entropy of a system decreases, there must be a corresponding increase in the entropy of the universe, maintaining the overall increase in entropy. This principle governs energy conversions and chemical reactions in various systems, including those in living organisms.

To know more about entropy, refer here:

https://brainly.com/question/13135498#

#SPJ11

Chemicals that have leached into the soil can be made harmless by bio remediation .

Can learn more about bio remediation from

https://brainly.com/question/14353375?

#SPJ4

The gas that would most likely be found in the greatest amount in bubbles is nitrogen, option c.

When a liquid undergoes a rapid change in pressure or temperature, bubbles are usually formed due to the presence of dissolved gases. Nitrogen is the most abundant gas available in natural environments such as water, due to its high solubility. Nitrogen is the primary component in Earth's atmosphere, with nearly 78% of it dissolved in water bodies.

Nitrogen is readily drawn out of the solution when you reduce pressure or the water temperature rises, leading to bubbles.

Learn more about Nitrogen Bubbles and Decompression sickness:

https://brainly.com/question/30286878

The gas that would most likely be found in the greatest amount in the bubbles is d) carbon dioxide.

During various natural processes and chemical reactions, gases can be released in the form of bubbles. When considering the options given, the gas that is commonly produced and released in significant amounts is carbon dioxide (CO2). Carbon dioxide is a byproduct of respiration, combustion, and other metabolic activities in living organisms. It is also released during the process of fermentation, photosynthesis, and decomposition of organic matter.

Oxygen (O2) is an essential gas for respiration, but it is typically consumed rather than produced in significant quantities during most natural processes. Ozone (O3) is a less common gas and is typically found in the Earth's ozone layer. Nitrogen (N2) is a major component of the Earth's atmosphere, but it is relatively inert and does not readily form bubbles.

Carbon dioxide, on the other hand, is frequently produced and released in various natural and chemical processes, making it the gas most likely to be found in the greatest amount in bubbles.

To learn more about carbon dioxide click here: brainly.com/question/15153008

#SPJ11

Answer:

the movement of large amounts of soil and rock debris down a slope

Explanation:

yeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeetyeet

The 4-methyl pentane-2-ol (\(C_6H_{14}O\)) is an alcohol compound with a methyl group attached to the fourth carbon atom and a hydroxyl group attached to the second carbon atom in a five-carbon chain.

For more questions on methyl group

https://brainly.com/question/31238796

#SPJ8