The first stage in designing your presentation is to make a list of questions that will enable you to do research. The list is divided by topic. Your presentation should answer these questions:

Chemical Reactions of Fossil Fuels

What kind of chemical reaction occurs when fossil fuels and biomass are burned? What is produced in addition to energy?
What is acid rain? Which fossil fuel causes acid rain? What are the chemical reactions that produce the acid?
Difference Between Biomass and Fossil Fuels

In terms of environmental impact, what’s the difference between natural gas, coal, and biomass? Consider both carbon dioxide (CO2) emissions and acid rain.
What’s the difference between nonrenewable and renewable energy sources? Is biomass a renewable energy source?
What’s a new discovery that makes it easier to use biomass as an energy source?
Comparing Biomass with Other Renewable Energy Sources

What are the pros and cons of several renewable energy sources? Renewable energy sources include biomass, wind power, hydropower, solar power, and geothermal power.
Making Recommendations for Energy Choices

Which renewable energy sources should be developed in your area, and why? Consider abundance of the energy source, ease of setup in your area, and cost.
Review the seven questions. Write a few sentences summarizing what you already know about these topics.














The first stage in designing your presentation is to make a list of questions that will enable you to do research. The list is divided by topic. Your presentation should answer these questions:

Chemical Reactions of Fossil Fuels

What kind of chemical reaction occurs when fossil fuels and biomass are burned? What is produced in addition to energy?
What is acid rain? Which fossil fuel causes acid rain? What are the chemical reactions that produce the acid?
Difference Between Biomass and Fossil Fuels

In terms of environmental impact, what’s the difference between natural gas, coal, and biomass? Consider both carbon dioxide (CO2) emissions and acid rain.
What’s the difference between nonrenewable and renewable energy sources? Is biomass a renewable energy source?
What’s a new discovery that makes it easier to use biomass as an energy source?
Comparing Biomass with Other Renewable Energy Sources

What are the pros and cons of several renewable energy sources? Renewable energy sources include biomass, wind power, hydropower, solar power, and geothermal power.
Making Recommendations for Energy Choices

Which renewable energy sources should be developed in your area, and why? Consider abundance of the energy source, ease of setup in your area, and cost.
Review the seven questions. Write a few sentences summarizing what you already know about these topics.

Answer:

Protons and Neutrons have approximately the same mass.

Equal numbers of protons and electrons make an atom neutral.

Protons have a positive charge

Explanation:

Protons and Neutrons have approximately the same mass. - both are 1 amu

Equal numbers of protons and electrons make an atom neutral. - protons are +1 and electrons are -1, so they cancel each other if there are equal amounts.

Protons have a positive charge - this is true.

Answer:

ok, maybe draw like a few plants and dear, you know and draw them out of cells, like the shape. so like a bunch of cells together making the shape of a deer or plant and stuff. i hope this helps

Explanation:

Cleaning supplies should be stored away from food for several important reasons:

1. Contamination: Cleaning supplies often contain chemicals that can be harmful if ingested. If they come into contact with food, they can contaminate it and pose a risk to human health. Some common cleaning agents, such as bleach, ammonia, and disinfectants, can cause nausea, vomiting, diarrhea, or more serious health issues if consumed.

2. Chemical reactions: Certain cleaning products can undergo chemical reactions when they come into contact with certain food items. For example, mixing bleach and acidic foods or liquids (such as vinegar, citrus fruits, or juices) can create toxic chlorine gas. Storing cleaning supplies near food increases the risk of accidental mixing or spillage, leading to dangerous chemical reactions.

3. Packaging mix-ups: Cleaning supplies and food items often come in similar packaging, such as spray bottles or containers. Placing them in close proximity increases the chances of mistakenly using the wrong product. Consuming cleaning products can be extremely hazardous and cause severe harm or even death.

4. Cross-contamination: Even if the cleaning supplies don't directly contact the food, there is still a risk of cross-contamination. Residual chemicals or fumes from the cleaning supplies can migrate to nearby food items, compromising their safety and quality.

To ensure food safety, it is crucial to store cleaning supplies in a separate, designated area away from food storage areas, preferably in a locked cabinet or a well-ventilated storage space. It's important to read and follow the instructions on cleaning product labels, use them as intended, and keep them out of reach of children and pets.

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Answer:

2 ATOMS

Explanation:

Cause it is at the end

Answer:

The Aufbau Principle

Explanation:

In the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy level before occupying higher-energy levels.

Answer:

Aufbau principle

Explanation:

edge 2021

The number of the atoms that make up the oxalate ion is 6 atoms and the its charge is negative two that is - 2.

The Oxalate is the polyatomic ion and it is composed of the two carbon atoms (C) and the four oxygen atoms (O). The  overall charge on the oxalate ion is of the negative two and it is considered as the  dianion or the molecule with the two negative charges.

The chemical formula of the oxalate ion is C₂O₄²⁻. It is called as the dicarboxylic acid. The Oxalic acid will also be produced by the ethylene glycol .

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Answer:

1500

Explanation:

I believe this is correct but am not sure, I shall update when I submit my quiz...

The pH of 1. 0 L of the solution on addition of 30. 0 mL of 1. 0 M HCl to the original buffer solution will be 12.50.

The reaction that occurs when HCl is added to the buffer solution is:

HCl + NH₃ → NH₄⁺ + Cl⁻

The HCl reacts with NH₃ to form NH₄⁺ and Cl⁻. This will cause the concentration of NH₄⁺ in the buffer to increase and the concentration of NH₃ to decrease. However, since we started with a buffer solution, it will still be able to resist changes in pH.

To solve this problem, we will use the Henderson-Hasselbalch equation:

pH = pKb + log([NH₄⁺]/[NH₃])

where [NH₄⁺] is the concentration of the ammonium ion and [NH3] is the concentration of ammonia.

Calculate the moles of HCl added

The volume of HCl added is 30.0 mL = 0.0300 L. The concentration of HCl is 1.0 M, so the moles of HCl added are:

moles of HCl = concentration x volume = 1.0 M x 0.0300 L = 0.0300 moles

Calculate the new concentrations of NH₄⁺ and NH₃

The moles of NH₄⁺ and NH₃ in the original buffer solution can be calculated as:

moles of NH₄⁺ = 0.20 M x 1.0 L = 0.20 moles

moles of NH₃ = 0.50 M x 1.0 L = 0.50 moles

When HCl is added, it reacts with NH₃ to form NH₄⁺ and Cl⁻. The amount of NH₄⁺ produced is equal to the amount of HCl added, since the reaction is 1:1. Therefore, the new concentration of NH₄⁺ is:

[NH₄⁺] = moles of NH₄⁺ / (volume of buffer + volume of HCl added)

[NH₄⁺] = 0.20 moles / (1.0 L + 0.0300 L)

[NH₄⁺] = 0.196 M

The new concentration of NH₃ can be calculated using the buffer equation:

[NH₃] = Ka x [NH₄⁺] / [H⁺]

where Ka is the equilibrium constant for the reaction NH₄⁺ + H₂O → NH₃ + H₃O⁺, which is equal to the acid dissociation constant of NH₃, Kb. Since pKb is given as 4.75, we can calculate Kb:

Kb = 10^(-pKb) = \(10^{-4.75}\)  = 1.78 x 10⁻⁵

Substituting the values we have:

[NH3] = Kb x [NH₄⁺] / [H⁺]

[NH3] = 1.78 x 10⁻⁵ x 0.196 M / \(10^{-pH}\)

[NH3] = 3.49 x 10⁻⁶ / \(10^{-pH}\)

Calculate the new pH of the buffer

Substituting the values we have into the Henderson-Hasselbalch equation:

pH = pKb + log([NH₄⁺]/[NH₃])

pH = 4.75 + log(0.196 M / (3.49 x 10⁻⁶ / \(10^{-pH}\))))

Simplifying and solving for pH:

pH = 4.75 + log(5.61 x 10⁷) + log(\(10^{pH}\))

pH = 4.75 + 7.75 + pH

pH = 12.50

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Answer:

Hydrological plant is a process in which plants needs water to complete the process to produce glucose in the presence of CO2 ,sunlight .plants needs water to survive .

The pka for the HA²⁻ is about 9.67. This can be calculated through bisection method as it is a conjugate base.

HA²⁻ is the conjugate base of H₃A, a triprotic acid with pKa values of 2.50, 5.75, and 9.25. It can be written as:

Step 1: Find the pH at which the species Ha²⁻ has half the proton concentration of A³⁻. For a triprotic acid with:

pKa1 < pKa2 < pKa3, the concentration of A³⁻ can be calculated using the following equation:

[A³⁻] = ( [H⁺]³) / ([H⁺]³ + K₁[H⁺]² + K₁K₂[H⁺]+ K₁K₂K₃)

Let x be the concentration of HA²⁻. Then, [A³⁻] = ( [H⁺]³ ) / ([H⁺]³ + K₁[H⁺]² + K₁K₂[H⁺] + K₁K₂K₃) = ( [H⁺]³ ) / ([H⁺]³ + [H⁺]²[0.00316] + [H⁺][0.00316 × 0.01] + [0.00316 × 0.01 × 0.0001] )

Thus, [A³⁻] = [H⁺]³/ ([H⁺]³ + 3.16 × 10⁻⁶ [H⁺]² + 3.16 × 10⁻⁸ [H⁺] + 3.16 × 10⁻¹¹)

Let [A³⁻] = [HA²⁻]/2 = x/2

Thus,  [H⁺]³ / ([H⁺]³ + 3.16 × 10⁻⁶ [H⁺]² + 3.16 × 10⁻⁸ [H⁺] + 3.16 × 10⁻¹¹) = x/2

Since, [H⁺] = 10-pH, and pH = pKa + log10([A-]/[HA]),

we can rewrite the expression as: (10-pH)³ = x/2 (3.16 × 10⁻⁶ + × 2 3.16 × 10⁻⁸ + × 3.16 × 10⁻¹¹ +1)

Rearranging, we get: ×3.16 × 10⁻⁶ + ×2 3.16 × 10⁻⁸ + × 3.16 × 10⁻¹¹ +1 - (2 (10-pH)3) = 0

We can solve this using numerical methods such as Newton-Raphson or bisection method. For simplicity, we can use an online calculator to get the answer. We get: pH = 4.33Thus, the pKa value of Ha2- is:pKa = 14 - pH = 9.67

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To identify a Lewis acid and base in a reaction, we might want to consider the steps below: :

In any chemical reaction, a Lewis acid is described a specie that can accept a pair of electrons, while a Lewis base is a species that can donate a pair of electrons.

In conclusion, in order  to identify a Lewis acid and base in a reaction, we will need to identify the species that can accept or donate a pair of electrons and go ahead to determine which one is the electron-pair donor and acceptor.

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The energy and intermolecular forces involved for liquid solid and gas are as follows:

Intermolecular forces are forces of attraction that exists between the molecules of a substance.

The strength of the intermolecular forces and hence, the kinetic energy vary inversely in molecules of solids, liquids and gases.

The energy and intermolecular forces that are involved for liquid solid and gas are explained below:

In conclusion, intermolecular forces decrease with increase in the kinetic energy of molecules.

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Answer:

The Concrete has a lower specific heat.

Explanation:

Answer:

180

Explanation:

proton = 80

electron = 80

neutron = 100

Note:- the atomic number of an element is the number of protons/electrons in the atomic shell

(protons = electrons)

Mass number = number of protons/electrons + number of neutrons

MN= NP+ NN

MN = 80 + 100

MN= 180

I HOPE THIS HELPS

Answer: The higher up an object an is the greater it’s gravitational potential energy. This is because a tree has more mass, so it needs to be given more gravitational potential energy to reach the same height. So a change in gravitational potential energy also depends on the mass of the object that is changing height

Explanation:

The gravitational potential energy (P.E) depends on the mass of the body and the height at which it travels, the two quantities will therefore dictate the work done on the object which is eventually the same as  magnitude of the gravitational potential energy P.E.

It is assumed that gravitational pull acts toward the earth surface. The more the object move upward the more the work is done on the object to pull it down.

This work done is equal to the gravitational potential energy P.E which can be expressed as:

P.E = mgh

Where

m = mass of the body

g = gravitational field strength

h = height

We can have different masses of object at different heights, but gravitational field strength will always remain constant on earth.

Since the gravitational potential energy P.E depend on the mass of the body and the height at which it travels, the two quantities will therefore dictate the work done on the object which is eventually the same as  magnitude of the gravitational potential energy P.E.

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Answer:

the answer is 0.041756547635452 we assume you are coverting between moles LiOH and gram

Explanation:

you can view details on each measurements units:monecular weight of LiOH or grams this compound is also known as lithium hydroxide the si base unit for amount of substance is the moles1 moles qual1 moles LiOH..... Sana makatulong sayo lods ang answer ko

Iron has a BCC crystal structure, an atomic radius of 0. 124 nm, and an atomic weight of 55. 85 g/mol. its theoretical density is 7.9 g /cm³.

The molar mass of the iron = 55.85 g/mol

The atomic radius = 0.124 nm

the edge length is given as :

a = (4r) / √3

a = ( 4 × 0.124 × 10⁻⁷ cm ) / √3

a = 2.86 × 10⁻⁸ cm

The density is given below :

density = ( Z × M ) / Na × a³

density = ( 2 × 55.85 ) / (6.023 ×10²³) × ( 2.86 × 10⁻⁸ )

density = 7.9 g/cm³

Thus the theoretical density is 7.9 g/cm³.

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H+ and Cl

Na+ and OH

Cu+ and SO4

Answer:

D) Both products are solids.

Explanation:

In a chemical reaction such as:

CaI2 (s) + Cl2 (g) → CaCl2 (s) + I2 (s)

You can see the phases of the chemicals involved in the reaction inmediately after the chemical formula. Where (s) means solid, (l) liquid and (g) gas

The CaI₂, CaCl₂ and I₂ are solids and Cl₂ a gas.

That means the products are solids and right solution is:

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

From the question

mass of liquid = 9.8 g

volume = 12.5 mL

The density is

\(density = \frac{9.8}{12.5} \)

We have the final answer as

Hope this helps you

Explanation:

For binary ionic compound, the compound is named by first writing the cation followed by the anion. The names of the compounds are;

MgBr₂ - Magnesium Bromide

KCl - Potassium Chloride

Al₂S₃ - Aluminium Sulphide

BeCl₂ - Berylium Chlride

MgCl₂ - Magnesium Chloride

GaN - Gallium Nitride

CaO - Calcium Oxide

BaO - Barium Oxide

AgBr - Silver Bromide

NaF - Sodium Flouride

SrS - Strontium Sulphide

LiCl - Lithium Chloride

AlP - Aluminium Phosphide

CsI - Caesium Iodide

Vinyl and aryl halides do not undergo Sn1 reactions because the carbon-carbon double bond in vinyl halides or the aromatic ring in aryl halides do not allow for the formation of a stable carbocation intermediate.

In an Sn1 reaction, the leaving group first leaves, generating a carbocation intermediate, which is then attacked by a nucleophile. However, in vinyl and aryl halides, the carbocation intermediate formed would be very unstable due to the electron-withdrawing nature of the double bond or aromatic ring. As a result, these compounds typically undergo Sn2 reactions instead.

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We can create a buffer solution with a pH of 3.7 by using formic acid as the buffer system's acid component.

To keep fundamental conditions in place, these buffer solutions are used. A weak base and its salt are combined with a strong acid to create a basic buffer, which has a basic pH. Aqueous solutions of ammonium hydroxide and ammonium chloride at equal concentrations have a pH of 9.25. These solutions have a pH greater than seven.

When little amounts of acid or base are supplied, buffers can resist pH changes, because they have an acidic component (HA) to neutralise OH- ions and a basic component (A-) to neutralise H+ ions, they are able to accomplish this.

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The solubility parameter of polyamide 11 is approximately [value] (units).Among the solvents benzyl alcohol, methanol, and ethyl methyl ketone, the best solvent for polyamide 11 is [solvent name].

The solubility parameter is a measure of the cohesive energy density of a substance and is used to determine the compatibility between a polymer and a solvent. It represents the overall energy required to disperse the intermolecular forces within a substance.

To calculate the solubility parameter of polyamide 11, we need to know the values of the solubility parameters for the individual components of the polymer, such as the molar volume and cohesive energy density. Unfortunately, the solubility parameter values for specific polymers are not readily available in general literature.

To determine the best solvent for polyamide 11, we compare the solubility parameter values of the solvents with that of polyamide 11. The solvent with a solubility parameter closest to that of polyamide 11 is considered the best solvent.

Without specific solubility parameter values for polyamide 11 and the solvents benzyl alcohol, methanol, and ethyl methyl ketone, it is not possible to provide a direct calculation or comparison. The solubility parameter is an important factor in solvent selection for polymers, as it indicates the compatibility and likelihood of dissolution. However, without the necessary data, a definitive conclusion cannot be drawn regarding which solvent would be the best for polyamide 11. To determine the best solvent, it is recommended to consult literature or experimental data that provides solubility information for polyamide 11 in various solvents.

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A nucleotide consists of a nitrogenous base, along with a sugar molecule

A nitrogenous base, a phosphate group, and a sugar molecule with five carbons constitute a nucleotide. The different kinds of nitrogenous bases that can make up a nucleotide are adenine, thymine, guanine, and cytosine. These bases are in charge of the genetic code that is stored in DNA and RNA since they are the base pairs that make up the double helix structure of DNA and the single stranded structure of RNA.

In DNA and RNA, the sugar molecule found within a nucleotide is referred to as deoxyribose. The energy required to power the chemical reactions that build and break the bonds between nucleotides, enabling DNA and RNA to store and transport genetic information, is provided by the phosphate group.

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Answer:

Any element in group 18 has eight valence electrons (except for helium, which has a total of just two electrons). Examples include neon, argon (Ar), and krypton . Oxygen, like all the other elements in group 16, has six valence electrons.

The grams of na3po4 will be needed to produce 375 ml of a solution 14.35 g.

Calculation:-

Given that the concentration of Na+ is = 0.700M

Na3PO4 → 3Na+ + PO4 3-

1 mole of Na3PO4 produces 3 moles of Na+

So the concentration of Na3PO4 is M = 0.700 / 3 = 0.2333 M

Volume of solution is , V = 375 mL = 0.375 L

So no . of moles , n = Molarity * Volume in L

= 0.233M * 0.375 L

= 0.0875 mol

Molar mass of Na3PO4 is = (3*23)+ 31 + (4*16) = 164 g / mol

We know that no . of moles, n = mass / Molar mass

mass of Na3PO4 is, m = n * Molar mass

= 0.0875 mol * 164 g / mol

= 14.35 g

The highest Na+ concentration is found in the filtrate at the bottom of the loop. The highest concentration of sodium ions is at the bottom of the loop because the sodium ion concentration increases as you go down the loop. The concentration of sodium ions is lower inside the cell than in the extracellular fluid, and vice versa for potassium ions. Divide the mass of the solute by the total volume of the solution. Write down the formula C = m/V. where m is the mass of the solute and V is the total volume of the solution.

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Answer:nope nope

Explanation:just no