Food wastes are estimated to be 72 percent moisture, with the remaining portion containing 45 percent C,6.4 percent H,28.8 percent O,3.3 percent N, and 16.5 percent other constituents.
(a) Write a chemical formula for the C,H,N,O portion of the waste
(b) Write a balanced chemical reaction for the production of methane
(c) What fraction of the volume of gas produced is methane
(d) At STP one mole of gas occupies 22.4∗10∧−3 m∧3. What volume of methane is produced per kilogram of food waste?
(e) Find the HHV value of the methane in kilojoules per kilogram of food waste.

Answer:

The inability to change the position by itself is defined as inertia.

During the communist rule in Central Asia, particularly in China, the Soviet Union, and Mongolia, religion experienced significant suppression and control. This period saw a decline in the influence and practice of religion in Central Asia, although some underground religious activities persisted.

During communist rule in Central Asia by China, the Soviet Union, and Mongolia, religion faced significant suppression and restrictions. Communist regimes viewed religion as a threat to their ideology and worked to eradicate it from society. Mosques, temples, and churches were closed, and religious leaders were persecuted, imprisoned, or executed. In China, the Cultural Revolution led to the destruction of many religious artifacts and institutions. The Soviet Union implemented anti-religious campaigns and established state-sponsored atheism. In Mongolia, Buddhism, which was the dominant religion, was banned, and many monasteries were destroyed. Overall, the communist regimes in Central Asia suppressed religion, resulting in a decline in religious practice and influence in the region.

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Answer:

Photosynthesis gas, is called carbon dioxide. Carbon Dioxide in this process is where the plants take in the dioxide and water, which is slowly reduced which gains electrons! :)

Explanation:

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Given:

=( 2.5 / 100) × 150 gram

= 0.025 × 150 gram

= 3.75 gram

Therefore, grams of chicken are in the sample  is 3.75 gram

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The van der Waals force is an atomic or molecular interaction that depends on distance. These attractions, which differ from ionic or covalent connections, are relatively weak and consequently more prone to disruption.

Longer distances between interacting molecules result in a rapid disappearance of the van der Waals force. The SO2 molecule have a different electronegativity. Sulfur's electronegativity is 2.5 while oxygen's is 3, but then, the molecule is not symmetrical to balance out the negative imbalance.

This figure demonstrates how SO2 gets twisted as a result of the sulfur's lone pair electrons pressing down on both oxygen molecules.

As a result of SO2's polarity, dipole-dipole interaction occurs.

Van der Waals forces are either immediate or permanent dipole-induced dipoles. Since H2S doesn't have a permanent dipole and isn't an ion, the attraction between H2S molecules will be instantaneous dipole-induced dipole attraction.

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A brownfield is a property, the expansion, redevelopment, or reuse of which may be complicated by the presence or potential presence of a hazardous substance, pollutant, or contaminant.

A “brownfield” generally refers to a parcel of land that was previously used for industrial purposes and which is contaminated by low concentrations of hazardous chemicals.

A brownfield development requires more work and investment upfront: existing structures may have to be demolished, materials must be removed, and developers may have to engage in extensive environmental cleanup to remove pollutants.

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Answer:

"Avogadro's law is an experimental gas law relating the volume of a gas to the amount of substance of gas present. The law is a specific case of the ideal gas law. A modern statement is: Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."

Answer:

Avogadro's law states that the equal volume of all gases at the same temperature and pressure contain the same number of molecule

Answer

B. 11.2 grams

Explanation:

Molar mass of CaCl = 110.98 g/mol

Molar mass of KCl = 74.5513 g/mol

From the balanced chemical equation of the reaction given;

1 mole CaCl produced 2 moles KCl.

In grams;

(1 mol x 110.98 g/mol) CaCl produce (2 mol x 74.5513 g/mol) KCl, i.e

110.98 g CaCl produced 149.10236 g KCl,

Therefore, the grams of CaCl needed to produce 15.0 g KCl will be:

Therefore, 11.2 grams of calcium chloride are needed to produce 15.0 g of potassium chloride.

Answer:

D: Chlorine( I may be wrong my chemistry year was a nightmare)

The awnser is chlorine (Cl) trust me

Answer:

The three main subatomic particles that form an atom are protons, neutrons, and electrons.

Answer:

See explanation

Explanation:

Sublimation refers to the movement of molecules directly from solid into the vapor or gas phase while deposition refers to the movement of  molecules directly from the gas phase into the solid phase. The two are opposite to each other.

Frost is formed in a situation where a substance cools to a temperature that is lower than its dew point. In this situation, the vapour is directly deposited on a surface to form a frost without passing through a liquid phase. Hence the name, deposition.

The 2 mol Al moles of Fe2O3 are formed when 4.2 moles of Fe reacts completely with oxygen.

What is moles?

A mole is an extremely important unit of measurement for chemists. A mole of anything denotes 602,214,076,000,000,000,000,000 of that thing, just as possessing a dozen eggs denotes having twelve eggs. Chemists use moles to measure extremely small substances like atoms, molecules, and other particles.

What is oxygen?

Because oxygen contains only one type of atom, it is a chemical element, which is a type of substance. Since oxygen has an atomic number of 8, it is represented by the letter O in its formal chemical formula and has eight protons in its nucleus. In nature, molecular oxygen can be discovered.

2 mol Al, 3 mol Fe.

Therefore,  2 mol Al moles of Fe2O3 are formed when 4.2 moles of Fe reacts completely with oxygen.

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The number of moles of Ba(OH)₂ present in 275 ml of 0.400 M Ba(OH)2 solution is 0.11 moles.

Moles of Ba(OH)₂ present in 275 ml of 0.400 M Ba(OH)₂ solution can be calculated as follows:

First of all, we should be familiar with the formula of Molarity which is as follows:

Molarity (M) = moles of solute / liters of solution We can rearrange this formula to calculate the moles of solute as follows:

moles of solute = Molarity (M) × liters of solution (L)Now let's apply the above formula to the given problem. Molarity (M) = 0.400 M, liters of solution (L) = 275 ml or 0.275 L (since 1 L = 1000 ml)moles of Ba(OH)₂ = 0.400 M × 0.275 L= 0.11 moles.

Therefore, the number of moles of Ba(OH)₂ present in 275 ml of 0.400 M Ba(OH)₂ solution is 0.11 moles.

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Answer:

hcl is a covalent compound

Explanation:

The gas with the slowest average molecular speed at a particular temperature is chlorine, or Cl2. The right answer is 5.

The formula for the typical molecular speed is:

The atomic speed is 1/M.

Where,

The molecular mass is M.

N2 has a molecular weight of 28.01 g/mol.

F2 has a molecular weight of 37.99 g/mol.

Carbon monoxide has a molecular weight of 28.01 g/mol.

Cl2 has a molecular weight of 70.90 g/mol.

The average molecular speed decreases with increasing molecule mass. The average molecular speed increases with decreasing molecular weight.

The chlorine has the slowest average molecular speed as a result.

The substance with the slowest average molecular speed is chlorine, or Cl2. Hence option 5 is correct.

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The diene that reacts with one equivalent of HBr to form the two bromoalkene products described in the question can be drawn as follows:

    H          H

    |          |

H3C-C=C-CH2-CH=CH2

    |          |

    H          H

In this diene, there are two double bonds, one between carbons 2 and 3 and another between carbons 4 and 5. When one equivalent of HBr is added to this diene, an electrophilic addition reaction occurs in which the H and Br add to the two double bonds to form two different products, as described in the question.

The effect of increasing temperature on the relative amount of each product can be explained by considering the mechanism of the reaction. The reaction proceeds through a carbocation intermediate, which is formed by protonation of the diene with HBr. The carbocation intermediate can then react with Br- to form the bromoalkene products.

Product 1 is formed by the addition of HBr to the double bond between carbons 2 and 3, which results in the formation of a more stable tertiary carbocation intermediate. As the temperature increases, the reaction rate increases, which can lead to a higher proportion of product 1 being formed. However, at very high temperatures, the reaction rate can become too fast, leading to increased side reactions such as rearrangements, which can decrease the relative amount of product 1.

Product 2 is formed by the addition of HBr to the double bond between carbons 4 and 5, which results in the formation of a less stable secondary carbocation intermediate. As the temperature increases, the reaction rate also increases, which can lead to a higher proportion of product 2 being formed. However, at very high temperatures, the reaction rate can become too fast, leading to increased side reactions such as elimination, which can decrease the relative amount of product 2.  Therefore, the answer to the question is that as the temperature increases, the relative amount of product 1 is expected to increase, while the relative amount of product 2 is expected to decrease due to side reactions. However, at very high temperatures, both products can be affected by side reactions, and the relative amounts may not change significantly.

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Answer:

2=2.28*10^5

3=3.98*10^3

4=5.76*10^3

Melting and freezing refer to the changes in state which occur when the solid and liquid states interchange. Melting occurs when a solid is heated and turns to a liquid and freezing occurs when a liquid is cooled and turns to a solid.

Answer:

Melting and freezing both require energy, however melting involves the speeding up of molecules, and freezing involves slowing them down

Explanation:

Explanation:

I. husking

ii. use magnet

III. husking

iv. floatation

v. Fractional distillation

The melting points of benzil and its isomers differ due to the differences in their molecular structure and intermolecular forces. Each isomer has a unique arrangement of atoms and functional groups, which affects the strength of the intermolecular forces between the molecules.

Benzil is a symmetrical molecule with two carbonyl groups, which allows for strong dipole-dipole interactions between the molecules. This contributes to its relatively high melting point of 94-95°C.

Hydrobenzoin is an isomer of benzil with two hydroxyl groups. The racemic form, which is a mixture of the R,R and S,S enantiomers, has a melting point of 122-123°C. The R,R and S,S enantiomers have a higher melting point of 148-149°C because they are more symmetrical and can pack more efficiently in the solid state, leading to stronger intermolecular forces. The meso form of hydrobenzoin has a melting point of 137-139°C, which is lower than the R,R and S,S enantiomers but higher than the racemic form. This is because the meso form is less symmetrical and cannot pack as efficiently in the solid state.

Overall, the differences in melting points between the isomers of benzil are due to the differences in their molecular structure and the strength of the intermolecular forces between the molecules.

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Answer:

the answer is c

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Explanation:

This is a law not rule. The fact that matter cannot be generated or destroyed through any chemical change is an established law according to previous experiments. It was a notion that was put to the test before becoming a law.

The law of conservation of energy, which states that energy cannot be generated or destroyed but may only be changed from one form to another, is the most fundamental law of thermodynamics.

A theory is more general and frequently includes more of a justification, whereas a law is more specific, such as this particular description of substance. The law of conservation of matter is based on the atomic theory; in chemical processes, atoms simply rearrange themselves, maintaining their initial mass.

Therefore, given statement is a law.

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Answer:

A plant cell has a cell wall but an animal cell dosnt have one

Explanation:

Brainliest plz

Explanation:

the cell wall surrounds the plasma membrane of the plant and provides tensile strength and protection against mechanical

It is not consumed and speeds up a reaction.

What is Catalyst?

A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. It works by lowering the activation energy required for the reaction to occur, which allows the reaction to proceed more quickly and with less energy input. Catalysts can be used in a wide range of industrial processes, from the production of chemicals and fuels to the manufacture of pharmaceuticals and food products.

A catalyst is a substance that speeds up a chemical reaction without being consumed in the process. Catalysts work by lowering the activation energy required for a reaction to occur, which allows the reaction to proceed at a faster rate.

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The value of Ksp for Hg2Br2 at 25∘C is 1.0 × 10^-12.

The given galvanic cell involves the reaction between Hg(l), Hg2Br2(s), Br−(0.10M), MnO4−(0.10M), Mn2+(0.10M), H+(0.10M), and Pt(s). The potential of the cell is given as 1.214 V at 25∘C.

To calculate the value of Ksp for Hg2Br2 at 25∘C, we can use the Nernst equation:

Ecell = E°cell - (0.0592/n) * log(Q)

Where Ecell is the cell potential, E°cell is the standard cell potential, n is the number of electrons transferred, and Q is the reaction quotient.

Since Hg2Br2 is a solid and its concentration does not appear in the reaction quotient, we can assume its activity is 1. Therefore, the reaction quotient simplifies to the concentrations of the other species involved in the cell:

Q = [Br−] / [MnO4−][Mn2+][H+]

By substituting the given concentrations and the calculated cell potential into the Nernst equation, we can solve for E°cell. Then, using the Nernst equation at equilibrium (Q = Ksp), we can solve for Ksp. In this case, the value of Ksp for Hg2Br2 at 25∘C is found to be 1.0 × 10^-12, rounded to one significant figure.

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Two substances that have the same pH value are ammonia and sodium bicarbonate. The reason for this is because both of these substances act as weak bases.

The pH value is a measure of acidity or alkalinity in a solution. The pH scale ranges from 0 to 14. A pH value of 7 is neutral, a pH value less than 7 is acidic, and a pH value greater than 7 is basic or alkaline. The pH value of ammonia is 11.0, and the pH value of sodium bicarbonate is 8.3.The pH value of ammonia is high because it is a basic substance. It reacts with water to form ammonium ions and hydroxide ions.

The concentration of hydroxide ions in a solution is what determines the pH value. In other words, a solution with more hydroxide ions has a higher pH value. Since ammonia has a high concentration of hydroxide ions, its pH value is high.Sodium bicarbonate is also a weak base. It reacts with water to form bicarbonate ions and hydroxide ions. The concentration of hydroxide ions in a solution is what determines the pH value. Since sodium bicarbonate has a low concentration of hydroxide ions, its pH value is low compared to ammonia.

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