Which processes result in the release of carbon? Check all that apply.
Animals break down food molecules to obtain energy.
The remains of producers are broken down by decomposers.
The remains of consumers are broken down by soil decomposers.

Answers

Answer 1

A) Animals break down food molecules to obtain energy. B) The remains of producers are broken down by decomposers. and C) The remains of consumers are broken down by soil decomposers.

What is decomposers?

Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition. Decomposers are a vital part of the food chain and the nutrient cycle. They are usually fungi and bacteria, but may also include other organisms, such as protists and certain animals, like worms and certain insects. Decomposers play an important role in the cycle of matter and energy in an ecosystem. They break down dead and decaying organisms, as well as feces, and in doing so, they release important nutrients back into the soil, which can then be used by other organisms. Decomposers are essential for the health of an ecosystem, as they help to maintain the balance of organisms and resources in an environment.

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Related Questions

How many formula units of sodium acetate are in 0.87 moles of sodium acetate

Answers

Answer:

0.87 moles of sodium acetate is equal to 5.22 formula units of sodium acetate. This is calculated by multiplying the number of moles (0.87) by the number of formula units (6) per mole

Explanation:

Calculate the [H3O+] of the following polyprotic acid solution: 0.145M H3C6H5O7.
Calculate the pH of this solution.

Answers

To calculate the pH of this solution, we must use the equation pH = -log[H3O+], which yields a pH of 1.834.

What is pH?

pH is a measure of the acidity or alkalinity of a solution. It is measured on a scale from 0 to 14, with lower numbers indicating an acidic solution and higher numbers indicating a basic or alkaline solution.

The chemical equation for the dissociation of H3C6H5O7 is:

H3C6H5O7 + H2O <=> H3O+ + H2C6H5O7-

The first dissociation of H3C6H5O7 produces one H3O+ ion for every H2C6H5O7- ion. Therefore, the [H3O+] is equal to the molar concentration of the acid, which is 0.145M.

To calculate the pH of this solution, we must use the equation pH = -log[H3O+], which yields a pH of 1.834.

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After a candle is blown out, the wax of the candle decreases in temperature. What happens to the molecules of the wax when the temperature of the wax decreases?

Answers

Answer:The energy of the molecules of the wax decreases.

Explanation:

C25H52 + 38 O2 → 25 CO2 + 26 H2O

What happens after having a penny in vinegar for 30 minutes?
What changes does the penny have after 10 minutes?
What changes does it have after 20 minutes?

Answers

After 30 minutes of being in vinegar, the penny will be covered in a thin layer of copper oxide.

What happens after having a penny in vinegar?After 10 minutes, the penny will have a greenish hue and it may have some bubbles on the surface.After 20 minutes, the penny will have a thicker greenish coating and more bubbles may have formed on the surface.After having a penny in vinegar for 30 minutes, the penny will have a number of visible changes.After 10 minutes, the penny will start to take on a more tarnished, dull look as the vinegar begins to dissolve the copper on the surface of the penny.After 20 minutes, the penny will start to become darker and the copper will begin to flake off.The vinegar will have also started to dissolve more of the copper, further discoloring the penny.After 30 minutes, the penny will have taken on a dark greenish-brown color and will have lost a significant amount of its copper coating.The vinegar will have completely dissolved the majority of the copper, leaving the zinc core of the penny exposed.

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what chemical is produced when the protein from food is broken down?

Answers

The chemical  produced when the protein from food is broken down are amino acids.

Amino acids are defined as the substances that are considered to be the monomers of proteins.Every amino acid has the same structure which consists of a central carbon that is binded to an amino group , carboxyl group and a hydrogen.

Each amino acid also has an  another atom or a group of atoms which is  bonded to the alpha carbon which are also known as the R group or the variable group of the side chain.There are 20  amino acids that are  present in natural proteins and each amino acid has the same backbone.

Proteins are present in food and are made up of amino acids.Thus,amino acids are  produced when the protein from food is broken down.

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plese hurrry Which of the following best describes a predator/prey relationship in the forest? 100 points.


Question 8 options:


mistletoe growing on a Mesquite tree



a deer eating the green leaves and berries on a holly bush



bacteria and mold break down fallen leaves on the forest floor



a spotted owl swoops down and captures a mouse

Answers

Answer: A spotted owl swoops down and captures a mouse

Explanation: The owl is the predator and the prey is the mouse. :)

Answer:

A spotted owl swoops down and captures a mouse best describes a predator/prey relationship in the forest.

Which of the following pairs of atoms would you expect to combine chemically to form an ionic compound?
a. Lithium and Sulfur
b. Oxygen and Sulfur
c. Aluminum and Oxygen
d. Fluorine and Chlorine
e. Iodine and Potassium
f. Hydrogen and Nitrogen

Answers

The following pairs of atoms would you expect to combine chemically to form an ionic compounds are a. Lithium and Sulfur c. Aluminum and Oxygen and e. Iodine and Potassium.

An ionic compound is what?

An ionic compound in chemistry is a chemical compound made up of ions held together by electrostatic forces known as ionic bonding. Although the compound is generally neutral, it does contain positively charged ions known as cations and negatively charged ions known as anions.

Ionic bonding, as a general rule, is visible in compounds where a metal bonds with a non-metal or a semi-metal. A molecular compound is one that has covalent bonds and is made entirely of non-metallic elements or semi-metallic elements combined with non-metallic elements.

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taking into account which direction the meter points, what is being reduced and what is being oxidized in the zinc and copper galvanic cell?

Answers

Taking into account the direction the meter points will be from left to right, the copper (||) ions are being reduced and Zn is being oxidized in the zinc and copper galvanic cell.

The direction of the flow of elections will be indicated by the direction of the needle, which will move from left to right. At this point, oxidation takes place at the Zn electrode, resulting in the release of e-, whilst the reduction of Cu+2 ion takes place at the Cu electrode, leading to the movement of electrons from left to right.

The correct answer is that the copper (||) ions are being reduced while the zinc ions are being oxidized.

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Classify each of the following diatomic species as ionic, polar covalent or nonpolar covalent. Br2 CsBr NaCl CaO HCI O2 KF HBr N2 BrF

Answers

Ionic - CaO, NaCl, KF, CsBr

Polar covalent - HBr, HCI, BrF

Nonpolar covalent - O2, Br2, N2

What does the chemical term "ionic" mean?

The entire transfer of valence electron(s) between atoms is referred to as an ionic bond. It is a kind of chemical connection that produces two ions with opposing charges. In ionic bonding, the nonmetal takes the lost electrons to form a negatively charged anion while the metal loses them to become a positively charged cation.

What do the chemical terms ion and covalent mean?

In most cases, ionic compounds are created when a metal reacts with a nonmetal (or a polyatomic ion). The reaction between two nonmetals produces covalent compounds. Binary compounds containing hydrogen are typically covalent compounds since hydrogen is a nonmetal.

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Your Task: Discuss how matter changes when thermal energy increases and decreases.


Please share your thoughts on thermal energy along the following discussion points:

Definition: Briefly define thermal energy. Use an example, if possible.

Increase. What happens when thermal energy is increased in matter? Use an example, if possible.

Decrease. What happens when thermal energy is decreased in matter? Use an example, if possible. Upload your paragraph to the assignment drop box. Refer to the rubric below to see how you will be evaluated.

Read other students’ posts and respond to at least two of them. In your responses, consider the following:

Mention at least one point on the importance of thermal energy. (not more than 1-2 sentences)

Share one key learning from the student’s post. (not more than 1-2 sentences)

Answers

Increase in the temperature would cause matter to change from one state to another.

What are the states of matter?

We know that there are three states of matter that we have and these are the solid, the liquid and the gas states of matter. We know that one of the feats that can be accomplished heat is the conversion of matter from one state to another.

This is because, the addition of heat would supply energy to the molecules that compose matter and they would be able to move faster and thus break the bonds and convert from one state to the other.

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According to the tile, how many moles of CO react with one mole of Fe2O3?

Answers

Answer: 3 Moles

Explanation: The reaction suggests that 1 mol of Fe₂O₃ reacts with 3 moles of CO and forms 2 moles of Fe and 3 moles of CO₂. If 1 mol of Fe₂O₃ reacts with 3 moles of CO. Hence, 5.25 mol of CO reacts with 1.75 moles of Fe₂O₃.

After intensive logging, most of the trees along a stream have been removed. Which of the following water quality changes would most likely occur downstream after logging?
answer choices
O Increased water temperature
O Increased dissolved oxygen
O Decreased total dissolved solids
O Decreased amount of fecal coliform

Answers

Increased water temperature is most likely occur downstream after logging.

When the tree roots are no longer holding the soil in place, soil erosion will increase. The stream's turbidity will rise as a result, and the temperature will rise as well.

Due to soil compaction and decreased transpiration, clear-cutting frequently lowers soil water-holding capacity and root strength. In addition, the loss of the forest cover leaves the soil surface vulnerable to intense precipitation and wide temperature changes.

When trees are destroyed through burning, cutting, or other means, they release carbon rather than absorbing it. 15% of all greenhouse gas emissions are attributable to deforestation and forest degradation.

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by law, what mineral must be added to refined flours during the enrichment process? a. copper b. magnesium c. iron d. iodine e. calcium

Answers

Iron must be added to the refined flours during the enrichment process.

Refined grain products to be enriched. this means adding returned certain B vitamins (thiamin, riboflavin, niacin, folic acid) and iron. but, fiber isn't brought again to enriched grains.

The germ is the center of the seed where boom happens; it's far rich in healthy fats, diet E, and B nutrients, phytochemicals, and antioxidants. The endosperm is the interior layer that holds carbohydrates, protein, and small amounts of a few B vitamins and minerals.

The 5 enrichment nutrients are defined by way of the meals and Drug Administration (FDA) and consist of thiamin (vitamin B1, thiamin mononitrate, or thiamin hydrochloride); riboflavin (diet B2); niacin (vitamin B3 or niacinamide); folic acid folate and iron (reduced iron, ferrous sulfate, or ferric orthophosphate).

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what is the mass (in kg) of 6.89 × 1025 molecules of co2? the molar mass of co2 is 44.01 g/mol. (Show work on scratch paper) o 5.04 kg o 6.39 kg o 3.85 kg o 3.03 kg o 2.60 kg

Answers

The mass of the molecule of CO₂ is 5.04 kg

Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10²³units / mole.

It is used to make very large number easier to handle.

Firstly we will calculate the moles of CO₂

As, 6.022 x 10²³ molecules of  CO₂ is present in 1 mole of CO₂

So, 6.89 × 10²⁵  molecules of CO₂ present in  mole of  CO₂will be found as

6.89 × 10²⁵/6.022 x 10²³ = 114.4 moles of CO₂

Now we have to calculate the mass of  CO₂

mass = moles × molar mass

mass =114.4 moles× 44.01 g/mol

mass = 5.034 Kg

So it will be nearly equal to 5.04kg

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why does the usda recommends limiting foods with added sugars, saturated fat, and high levels of sodium?

Answers

Usda recommends limiting foods with added sugars, saturated fat, and high levels of sodium because it disturbs the iodine level in the body.

Saturated fats are one type of fat in the foods we eat and the beverages we drink. Most come from animal products, like dairy, meat, and poultry. To limit the amount of saturated fats you eat, choose lower-fat and lean options of dairy, meat, and poultry — like skim milk, lean beef, and grilled chicken breast without the skin.

Eating too many foods high in saturated fats can be bad for your health. By replacing saturated fats with unsaturated fats, you may lower your risk of getting heart disease.

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In a reaction mixture containing only reactants, what is the value of Q?

a. -1

b. 1

c.
[infinity]

d. 0

e. It cannot be determined without concentrations

Answers

The value of Q in a reaction mixture containing just reactants is 0. Thus, the correct answer is D.

In a reaction mixture containing only reactants, the value of Q (the reaction quotient) is 0. This is because Q is defined as the product of the concentrations (or pressures, in the case of gases) of the products raised to their stoichiometric coefficients, divided by the product of the concentrations (or pressures) of the reactants raised to their stoichiometric coefficients.

At the start of a reaction, when only reactants are present, the concentrations (or pressures) of the products are 0, so any value raised to the power of 0 is equal to 0. As a result, the numerator of the Q expression is equal to 0, and the result of division by anything is always 0.

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Arrange the following bonds in order of INCREASING bond strength. (Note: SMALLEST BOND STRENGTH FIRST. LARGEST BOND STRENGTH LAST) A. C-I

Answers

Since the fluorine atom has a higher electronegativity than carbon (4.0 vs. 2.5), the carbon-fluorine bond has a significant polarity/dipole moment.

What does bonds mean in chemistry?

Chemical bonds maintain the interconnectedness of molecules' atoms. Electrostatic forces between negatively charged electrons and positively charged atomic nuclei produce bonds (the positions of which in space are determined by quantum mechanics). Molecules and crystals are created by the formation of chemical bonds, which are long-lasting attractions between atoms or ions. Covalent bonds and ionic bonds both involve the sharing of electrons, while ionic bonds are formed by electrostatic attraction between two ions that have opposing charges.

Why form chemical bonds?

The most straightforward explanation is that atoms are trying to get into the most stable (lowest-energy) state they can. Many atoms become stable when they satisfy the octet rule or have their valence shell completely filled with electrons (by having eight valence electrons). Atoms swap or trade their valence electrons in order to create bonds. It is possible for the valence electrons, which make up an atom's outermost energy level, to interact chemically. All chemical bonds are built on valence electrons.

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The complete question is:

Arrange the following bonds in order of INCREASING bond strength. (Note: SMALLEST BOND STRENGTH FIRST. LARGEST BOND STRENGTH LAST)

A. C-I

B. C-F

C. C-Br

D. C-I

E. Bond strengths are equal.

what is the process by which nitrate ions and nitrite ions are converted into nitrous oxide gas and nitrogen gas (n2)?

Answers

When nitrate is transformed into gaseous forms of nitrogen, including nitric oxide, nitrous oxide, as well as dinitrogen gas, denitrification takes place.

What food items are nitric oxide-rich?

Our bodies naturally produce nitric oxide from the nitrates and prevalent in diet. Dark green leafy foods including kale, arugula, Swiss chard, even spinach are excellent suppliers. Beets, cabbage, cauliflower, radishes, and broccoli are additional good sources.

What affects the heart does nitric oxide have?

A potent receptor that promotes circulation and encourages blood arteries relax is nitric oxide. According to some data, arginine may enhance blood flow via the heart's arteries. That might lessen the indications of chest pain, clogged arteries, etc.

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To answer this question, you have to do some research or read the relevant chapter in the textbook. The mole concept is related to everyday chemistry. For this exercise, you are going to calculate the number of molecules or atoms. Identify one food item, find out what elements or compounds are in this item. Explain how you would calculate the number of molecules or atoms of your interest. Respond others having a difficult time with calculation.

Answers

We may determine the amount of atoms or molecules contained in every food item using the mole concept and avogadro's law. Number of molecules or atoms: 0.668 x 1023

What kind of molecules are there?

The smallest unit of any substance that is made up of one or more elements and has the ability to live on its own while keeping all of the substance's physical and chemical properties is called a molecule. Within molecules, more atom division takes place. For instance, the atom and molecule of oxygen are represented by the letters O and O2, respectively.

How do molecules differ from atoms?

Single, neutral particles make up an atom. As neutral objects consisting of two or more atoms joined together, molecules are. A positively or negatively charged particle is called an ion.

Molar mass = [(12 X 6) + (1 X 12) + (6 X16)] g/mol

= 72 + 12 + 96 = 180 g/mol

Thus molar mass of glucose (C6H12O6) = 180 g/mol

Number of mole = 20/180 = 0.111 moles

So, 0.111 moles of glucose will contain ( 0.111 X 6.023 X 1023) number of molecules or atoms

                            = 0.668 X 1023 number of molecules or atoms

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phosphoric acid (h3po4) can give up three protons, each with different pka values consisting of 2.12, 7.21, and 12.67. if plotting ph as a function of sodium hydroxide solution added, which titration curve represents the neutralization of a solution of phosphoric acid with an initial ph of 1.0?

Answers

The equivalence point of the titration would occur when all three protons have been neutralized and the pH of the solution becomes neutral (around 7).

What is titration curve?

Titration curves provide graphical depictions of titration analyses. Scientists first measure a property of the analyte solution (usually pH for acid-base titrations). Then, they plot this property against the volume of the titrant added.

Phosphoric acid (H3PO4) is a triprotic acid, which means it can donate three protons (H+) with different acid dissociation constants (pKa) values. The pKa values for phosphoric acid are 2.12, 7.21, and 12.67.

In the first region, the initial pH of the phosphoric acid solution is 1.0, which corresponds to the first proton dissociation (pKa = 2.12). As NaOH is added, the pH of the solution increases rapidly as the first proton is neutralized.

In the second region, the pH of the solution increases more slowly as the second proton (pKa = 7.21) is neutralized.

In the third region, the pH of the solution increases even more slowly as the third proton (pKa = 12.67) is neutralized.

The equivalence point of the titration would occur when all three protons have been neutralized and the pH of the solution becomes neutral (around 7).

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Draw the skeletal structure of 3-methyl-2-hexanone, or 3-methylhexan-2-one. Select Draw Rings More C С O H

Answers

The skeletal structure of 3-methyl-2-hexanone, or 3-methylhexan-2-one, is drawn using the Draw Rings More C С O H. feature.

What is skeletal structure?

The skeletal formula of an organic compound, also known as the line-angle formula as well as shorthand formula, is a form of molecular structural formula which serves as just a shorthand representation of the a molecule's bonding as well as some details of the its molecular geometry.

The structure consists of a central carbon atom with two single bonds to two hydrogen atoms, a single bond to an oxygen atom, and another single bond to a carbon atom. This carbon atom has two single bonds to two hydrogen atoms and three single bonds to three other carbon atoms, each of which has two single bonds to two hydrogen atoms. This forms a six-carbon chain with one oxygen atom and eight hydrogen atoms.

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balance redoxNi(s)+Cd2+(aq) --> Ni2+(aq)+Cd(s)Mg(s)+Cr3+(aq) --> Mg2+(aq)+Cr(s)Cl-(aq)+NO3(aq) --> NO(g)+Cl2(g)

Answers

The redox reaction is not balanced. The balanced equation for the first reaction is: Ni(s) + Cd2+(aq) → Ni2+(aq) + Cd(s)

What is redox reaction?

A redox reaction, also known as an oxidation-reduction reaction, is a type of chemical reaction in which the oxidation states of atoms are changed. Oxidation is the process of losing electrons, and reduction is the process of gaining electrons. Transfer of electrons through one reactant to some other occurs during redox reactions. These reactions can involve substances in all three states of matter: gases, liquids, and solids. Examples of redox reactions include combustion, rusting of iron, photosynthesis, respiration, and electrolysis. Redox reactions are essential for life, as they are involved in many energy-producing processes, such as cellular respiration.

The balanced equation for the second reaction is: Mg(s) + Cr3+(aq) → Mg2+(aq) + Cr2+(aq)
The balanced equation for the third reaction is: Cl-(aq) + 2NO3-(aq) → NO(g) + Cl2(g)

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three moles of an ideal monatomic gas are at a temperature of 345 k. then, 2438 j of heat is added to the gas, and 962 j of work is done on it. what is the final temperature of the gas?

Answers

The final temperature of gas is approximately 436 K . if three moles of an ideal monatomic gas are at a temperature.

What are monatomic atoms?

Monoatomic (monatomic): A molecule composed of just one atom, and lacking any covalent bonds. The noble gases (He, Ne, Ar, Kr, Xe, and Rn) are all monoatomic, whereas most other gases are at least diatomic.

What is monatomic or diatomic?

Complete answer: Monatomic gas is the gas that has molecules containing a single atom only while diatomic gas has the molecule containing two atoms. Similarly, triatomic gas contains molecules with three atoms. The hydrogen gas exists as a diatomic molecule, as it contains two atoms of hydrogen.

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Part A: What is the pH of an aqueous solution with [H3O+] = 2×10−14 M ? Express the pH numerically using one decimal place. Part B Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. What is the molar concentration of H3O+ in a cola that has a pH of 4.240? Express your answer with the appropriate units.

Part B: Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. What is the molar concentration of H3O+ in a cola that has a pH of 4.240? Express your answer with the appropriate units.

Answers

The molar concentration of H3O+ in cola with a pH of 4.240 will be 7.59 M, and the pH of the aqueous solution will be 13.7.

In chemistry, the pH scale is used to define the acidity or basicity of an aqueous solution. Historically, pH stood for "potential of hydrogen." The pH values of acidic solutions are typically lower than those of basic or alkaline solutions.

A. [H₃O⁺] = 2 x 10⁻¹⁴ M

We must determine the pH.

Calculation of pH

pH equals -log [H3O+]

Replacement pH = - log [2 x 10⁻¹⁴]

pH of the result is 13.7

B.

[H₃O⁺] = ?

pH = 3.12

pH is expressed as = - log [H3O+]

Replacement 3.12 = - log [H3O+]

Conclusion [H3O+] = 7.59 M

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select the best statement. multiple choice physical changes may be reversed by changing the temperature. physical changes alter the composition of the substances involved. physical properties are not valid characteristics for identifying a substance. physical properties are mostly extensive in nature. physical changes are usually accompanied by chemical changes.

Answers

The best statement is: Physical changes may be reversed by changing the temperature.

What physical changes can be reversed?

Physical changes which involve a change of state are all reversible. Other changes of state consist of vaporization (liquid to gas), freezing (liquid to solid), and condensation (gas to liquid). Dissolving is also a reversible physical change.

Physical changes are reversible. A change where no new substances are formed can basically be reversed by reversing the conditions is called a physical change.

A physical change includes a change in physical properties. Some examples of physical properties, such as: transition to a gas, change of strength, melting, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

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Which of the following expresses the quantitative measurement? (a)the burette is longer than the pipette. (b)HCl is stronger than HCN d)boiling point of ethyl alcohol is 75°34' water is a colourless liquid.​

Answers

Answer: d. boiling point of ethyl alcohol is 75.

Explanation:

a battery may be rated in ampere-hours (ah). a lead-acid battery is rated at 185 ah. what is the maximum current the lead-acid battery can supply for 65 h?

Answers

According to the claim made, the maximum current it can produce for 65 hours is 2.84A.

Why does a battery include lead-acid?

Two electrodes are immersed in an atmosphere of sulfuric acid to form the lead-acid battery. The deleterious electrode is connected to a mesh of metallic lead, whereas the column . the column is constructed of metallic lead oxidation grains. Lead-acid batteries take longer to charge than lithium-ion batteries since the latter can handle higher current rates. This is essential for time-sensitive applications whereby vehicles are used more often and take fewer breaks. The amount of water inside the battery decreases as more of it is transformed into hydrogen.

Rating Given: 185 Ah

The maximum current for 65 hours will be I = 185Ah/65h I = 2.84 A.

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Balance the following redox reaction occurring in acidic aqueous solution.MnO-4 (ag) + Al (s) + Mn^2+ (ag) + Al^3+ (ag)

Answers

The given equation MnO⁻⁴(aq)+Al(s)→Mn⁺²(aq)+Al⁺³(aq) is unbalanced equation . The balanced form of this equation is :

3MnO⁻⁴ + 5Al + 24H → 3Mn⁺² + 5Al⁺³ + 12H₂O

In this reaction, Mn is reduced, and Al is oxidized. So, the oxidation and reduction half-reactions are:

Al → Al⁺³

MnO⁻⁴→Mn²⁺

On balancing O and H, the equations become:

Al→Al⁺³

MnO⁻⁴ + 8H⁺→Mn⁺² + 4H₂O

After balancing charges, the equations become:

Al→Al³⁺ +3e−    -(I)

MnO⁻⁴ +8H⁺ +5e− → Mn2++4H₂O      --(II)

To make electrons gained and electrons lost equal, multiply equation (I) by 5 and equation (II) by 3.

5Al → 5Al⁺³ + 15e−     --(III)

3MnO⁻⁴+ 24H⁺ + 15e− → 3Mn⁺² + 12H₂O    -(IV)

On adding equations (III) and (IV) we get the following balanced equation:

3MnO⁻⁴ + 5Al + 24H → 3Mn⁺² + 5Al⁺³ + 12H₂O.

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At constant 400 kpa pressure a gas is compressed from 600 cm3 to 200 cm3, while 100 j of heat energy transferred from the gas to its surrounding. How much has the gas thermal energy changed?.

Answers

The gas thermal energy changed by the value of plus 60 joules at constant 400 kpa pressure a gas is compressed from 600 cm3 to 200 cm3.

Calculate the work done as follows: W =-PAV

=-(400×10³ Pa)(200×10m³ - 600×10m³)

= +160 J

Here, positive sign indicates work is done on the gas.

Calculate the thermal energy as follows:

AU=Q+W

=-100+160 J

= +60 J

Here, the sign of Q is negative because heat is removed from the gas.

The system and environment can exchange energy with each other. One of the ways to exchange energy is doing work that can be understood in mechanical terms.

According to the Newton’s third law, the work done on the system by the environment and the work done by the system on the environment differ by the sign. In the general formulation of thermodynamics, we consider the former.

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What orbitals are used to form each bond in methanol, CH3OH? Be sure to answer all parts. All C-H bonds are formed from C ... sp 3 -H ... sp The C-O is formed from C ... 3sp O ... 3sp The O-H bond is formed from O ... 3sp -H ...sp

Answers

sp³ hybridized orbitals form the CH, CO and OH bonds in methanol.

What is hybridization?

Hybridization is the process by which the energy of individual atom orbitals is redistributed to create new orbitals with equivalent energy. The hybrid orbitals are the new orbitals that emerge during this process.

All C-H bonds in methanol are formed from the overlapping of the carbon atom's hybridized sp³ orbital with the hydrogen atoms 1s orbital.

The C-O bond in methanol is formed from the overlapping of the carbon atom's hybridized sp³ orbital with the oxygen atom's hybridized sp³ orbital.

The O-H bond in methanol is formed from the overlapping of the oxygen atom's hybridized sp³orbital with the hydrogen atoms 1s orbital.

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