Fusion of a carbon nucleus with another carbon nucleus. A) 24Mg(12p,12n) B) 23Na(11p,12n) C) 12C(6p,6n) D) 55Mn(25p,30n).

Answer:

The answer is "The number of feedings per day and fishes body fat".

Explanation:

In the independent variable, it is the fish feed to its fish, that because it variable affects the factor-dependent. In this case, the fish weight is equal to the dependent variable. In the water storage capacity as well as the conditions are also constant in variable and become maintain but don't alter during the procedure, whereas altering its experiment will modify its tank, which is usually fed into the comparison group-which is used to compare its results to that of therapies.

An exothermic reaction is the chemical reaction which releases heat to the surroundings. Among the options you provided, the example of an exothermic reaction is ammonium nitrate dissolving in water. Option A is correct.

This reaction is exothermic because the dissolution process releases heat to the surroundings, as well as the temperature of the solution will increases.

The other examples you provided, such as the dissolving of concentrated hydrochloric acid, ammonium chloride, and sugar in water, are all exothermic processes as well, but they are not chemical reactions, as no new substances are formed. They are simply physical changes, where the substances dissolve in the solvent.

Hence, A. Ammonium nitrate dissolving in water is the correct option.

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--The given question is incorrect, the correct question is

"Which example is an exothermic reaction? A) ammonium nitrate dissolving in water B) concentrated hydrochloric acid dissolving in water C) sugar dissolving in water D) ammonium chloride dissolving in water."--

First, we need to make the exponent of 10 the same for both.

So let's transform 6.5500 x 10^5 into some number x 10^3.

For this, we need to move the dot to the right, some places where it gives the number 3. In this case, 2 places.

655.00 x 10^3

now we can sum the numbers

8.6500 x 10^3 + 655.00 x 10^3 = 663.65 x 10^3

now we need to transform this number into scientific notation. For this, must have only one number before the dot(on the left side of the dot). We will move the dot to the left, 2 places:

6.6365 x 10^5

Answer: 6.6365 x 10^5

Answer:

no

Explanation:

because the characters are invalid

Answer:

no

Explanation:

because they are not valid

At the transition stage, one form of matter starts getting converted into another form of matter.

Solid, liquid and gas are the three phases in which matter occur in nature. Matter is interconvertible in nature i.e it can be converted from one form to another.

Melting, freezing and evaporation are the three phases of transition.

Liquid water at low temperature freezes to form solid ice. This process is known as freezing. Whereas, liquid water when provided high temperature or heat releases vapours. This process is known as evaporation. Solid ice when brought at room temperature gets converted back into liquid water. This process is known as melting.

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D

This is when very large or very small numbers must be written. They come in the format or 5.43 x 10^3 or can be written as 8.26E6. The numbers will vary depending on your number.

Answer:

11. Redox

12. Acid/Base

13. Precipitation

14. Combustion

15. Precipitation

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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The given question is incomplete. The complete question is:

Consider the spontaneous dissolution of NaCl in water: NaCl(s) → Na+(aq) + Cl −(aq) Predict whether the entropy change for this process is positive or negative and explain your answer. Then, predict whether the free energy change for the process is positive or negative and explain your answer.

Answer: The entropy change is positive. The free energy change for the process is negative and reaction is spontaneous.

Explanation:

Entropy is defined as the degree of randomness of a system. For a system in which randomness increses , the enetropy is said to increase and \(\Delta S\) is positive.

As in the given reaction : \(NaCl(s)\rightarrow Na^+(aq)+Cl^-(aq)\) , the solid is dissociating to give ions , randomness increases and thus entropy is positive.

Also the dissociation of a molecule requires energy , thus the enthalpy \(\Delta H\) is also positive as heat is absorbed by the system.

\(\Delta G=\Delta H-T\Delta S\)

\(\Delta G=(+ve)-T(+ve)\)

\(\Delta G=-ve\) when Temperature is high.

Consider the spontaneous dissolution of NaCl in water: NaCl(s) → Na+(aq) + Cl −(aq)

Predict whether the entropy change for this process is positive or negative and explain your answer. Then, predict whether the free energy change for the process is positive or negative and explain your answer.

The given question is incomplete. The complete question is:

Consider the spontaneous dissolution of NaCl in water: NaCl(s) → Na(aq)  Cl −(aq) Predict whether the entropy change for this process is positive or negative and explain your answer. Then, predict whether the free energy change for the process is positive or negative and explain your answer.

Answer: The entropy change is positive. The free energy change for the process is negative and reaction is spontaneous.

Explanation:

Entropy is defined as the degree of randomness of a system. For a system in which randomness increses , the enetropy is said to increase and  is positive.

As in the given reaction :  , the solid is dissociating to give ions , randomness increases and thus entropy is positive.

Also the dissociation of a molecule requires energy , thus the enthalpy  is also positive as heat is absorbed by the system.

when Temperature is high.

Which of these ideas did you include in your answer?

Have a Nice Day .

The values of  enthalpy change, entropy change and  temperature all determine the spontenity of a reaction.

A sponteanous reaction is one which has the change in free energy as negative. We know that ΔG = ΔH - TΔS. The spontenity of a reaction depends on;

i. enthalpy change

ii. entropy change

iii. temperature

Since the values in the qestion are not given, the question is incomplete and we can not obtain a numerical value in order to decide the sponteanity of the reaction.

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Answer:

Enter your numerical answer to 1 decimal place. Do not include the units of "g". Question: Question 14 1 pts Consider the following reaction, where A and E are hypothetical elements. A+3E --> AE The atomic mass of A is 42.1 amu. The atomic mass of Eis 56.2 amu. If 42.6 g of A fully reacts, how many grams of AE, are expected to form?

Answer:

C. democritusm John dalton, JJ Thomason, Ernest Rutherford, Neils Bohr, and Erwin Schrodinger.

The correct order of the scientists in order of their work related to the

structure of an atom from earliest to most recent include Democritus, John

Dalton, JJ Thomson, Ernest Rutherford, Neils Bohr, and Erwin Schrodinger.

Democritus was regarded as one of the earliest scientist who first proposed

atomic theory around 460 BC which was then modified and used by others

such as John Dalton, JJ Thomson, Ernest Rutherford and Neils Bohr.

The most recent of them all was Erwin Schrodinger which was  the wave

equation for electron movements in the 20th century.

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Answer:

move in convection currents

Explanation:

When different parts of the oceans are heated unevenly this causes the water to move in convection currents.

Answer:

4.70 grams of NH4Cl is needed to prepare 350 mL of a 0.25 M ammonium chloride solution.

We need approximately 4.68 grams of NH4Cl to prepare a 0.25 M ammonium chloride solution with a volume of 350 mL.

To determine the mass of NH4Cl needed to prepare the solution, we us use the formula:

m=M x V x MM ... (i)

where,

m= mass in grams

M=molarity of solution

MM= molar mass of compound

V= volume in litres

The number of moles of NH4Cl needed can be calculated using:

  Moles = Molarity x Volume ...(ii)

  Moles = 0.25 mol/L x 0.350 L

  Moles = 0.0875 mol

Hence we can replace M x V with number of moles in equation i.

The molar mass of NH4Cl is :

  Molar mass of NH4Cl = (1 x 14.01 g/mol) + (4 x 1.01 g/mol) + (1 x 35.45 g/mol)

  Molar mass of NH4Cl = 53.49 g/mol

We have all the variables

Putting them in equation i.

Hence,

  Mass (g) = Moles x Molar mass

  Mass (g) = 0.0875 mol x 53.49 g/mol

  Mass (g) = 4.68 g

Therefore, you would need approximately 4.68 grams of NH4Cl to prepare a 0.25 M ammonium chloride solution with a volume of 350 mL.

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The molecule that acts as an acid in this reaction is (A) H2SO4.

According to the following reaction,

\(H_{2}O + H_{2}SO_{4} --- > H_{3}O^{+} + HSO_{4}\)

 The molecule that acts as an acid is H2SO4. It is a strong acid that ionizes completely in water to produce H3O+ and HSO4-.

H2O is the chemical formula for water, and H2SO4 is the formula for sulfuric acid, which is a strong acid. The reaction involves the transfer of a proton (H+) from the acid to the water molecule, resulting in the formation of the hydronium ion (H3O+) and the hydrogen sulfate ion (HSO4-).

H2O + H2SO4 → H3O+ + HSO4-

The reactants are H2O and H2SO4, which is an acid, while the products are H3O+ and HSO4-. Therefore, the molecule that acts as an acid in this reaction is (A) H2SO4.

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The reactant that runs out first and The reactant that determines the maximum amount of product that can be formed in a reaction are the correct options.

:In a chemical reaction, a limiting reactant is the one that gets used up first, limiting the amount of product that can be formed. The limiting reactant determines the maximum amount of product that can be produced in a chemical reaction. The other reactants involved in the reaction are called excess reactants because they exist in abundance and do not limit the reaction.

\If the limiting reactant is completely consumed, the reaction ceases even if there is still an excess of other reactants left. Thus, the limiting reactant controls the reaction.

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There are 9 steps of the election process Call for Nominations, Preliminary Reviews, Ballot Petition Rules, Nominee Interviews, Committee Meeting, Slate of Candidates Announcement, Voting Opens etc..

Request for Nominations

The nomination process is made public by the Academy.

introductory reviews

Candidates are required to submit biographical sketches that contain digital images, films they have recorded themselves, and curriculum vitae or resumes.

Election Petition Rules

Check out the requirements for adding a petitioner to the general election ballot.

interviewing nominees

Virtual meetings with the Nominating Committee are held.

Commission Meeting

The Nominating Committee meets in late fall to review the materials submitted by candidates, taking into account which positions are open on the ballot, and evaluating key personal, interpersonal, and demonstrated leadership skills as they relate to the qualifications and skill set needs for each position.

Release of the Candidate Slate

Announcing candidates for posts includes posting supporting information online, in the Academy's electronic weekly newsletter, and on social media, including images, self-recorded films, biographical sketches, and answers to questions posed by the Nominating Committee.

Voting begins

Members take part in computerised voting during the month of February for the national Academy elections.

Announcing the results of the election

Following the tallying of all votes and the notification of candidates, the Academy informs members of the election results.

Review of the election and nomination processes

The process for nomination and election is assessed at each stage. The Nominating Committee, the Academy, and the applicants are all asked for their opinions.

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Answer:

valence electrons

Explanation:

Answer:

They both combine with The help of valency, which is the combining capacity of elements

Explanation:

I find it easier to understand valency as part of the Bhor’s model of an atom.

In his model, it was stated that electrons are spread around the nucleus in such a way that there are rings around the model. Each ring has a n value. So, k has 1, l has 2, m has 3 and n has 4...

what you need to know to find the number of electrons in each ring is to solve the formula 2n squared

Then, the valency is the 8 minus the number of electrons in the outermost shell. Remember that 8 is max number I;outer most shell. If you try it out for oxygen, you will get the value of 2 remaining, which can be gained if combined with calcium.

Hope it helps

B

Explanation:

I aint sure tho i am sorry

Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. Therefore, the correct option is option A.

Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.

Cation is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state. The ratio of metal cationic (+) atom to nonmetal anionic (-) atom in the given compound is 1:3 as cation is always smaller in size than anion.

Therefore, the correct option is option A.

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The concentration of the NaOH solution is 10.00 g/dm³.

To calculate the concentration in g/dm³ of a solution of NaOH containing 0.25 moles in 1 dm³, we need to know the molar mass of NaOH.

The molar mass of NaOH is calculated as follows:

Na (Sodium) = 22.99 g/mol

O (Oxygen) = 16.00 g/mol

H (Hydrogen) = 1.01 g/mol

Molar mass of NaOH = 22.99 g/mol + 16.00 g/mol + 1.01 g/mol = 40.00 g/mol

Now, we can calculate the concentration (C) using the formula:

C = (moles of solute) / (volume of solution in dm³)

C = 0.25 moles / 1 dm³

C = 0.25 mol/dm³

To convert moles to grams, we can multiply the molar mass by the number of moles:

Concentration in g/dm³ = (0.25 mol/dm³) * (40.00 g/mol)

Concentration in g/dm³ = 10.00 g/dm³

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A single, substantial big molecule makes up each lattice. Ionic bonding helps to keep these lattices together. As a result, ionic bonds are frequently regarded as intermolecular.

option C

An ionic connection is created when a metal and a non-metal come together. The nonmetal receives electrons from the electropositive metal. As an electron is lost or gained, metals turn into cations, whilst nonmetals become anions. The electrical pull between these diametrically opposed ions forms the ionic bond.

Ionic compounds have well-ordered crystalline lattices when the ions and electrons are present. The fundamental unit of the lattice is connected to additional units via other units.

Hence, the charged ends of other molecules can be connected to the charged ends of ionic compounds. In this sense, ionic bonding might be referred to as intermolecular.

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The complete question follows

Why is ionic bonding considered both inter- and intramolecular bonding? A. lonic bonds are strictly intermolecular forces. B. Ionic bonds are strictly intramolecular bonds. C. Each lattice is a single large molecule of some substance. D. lonic solids form directly from gases 1 atom at a time. E. Molecules arrange themselves in a grid, and it's hard to tell where one molecule ends and the other begins.

Answer:

Animals gain energy from the food they eat. Some animals eat plants while others eat other animals. This is passing of energy from the sun to plants to animal to other animals is called a food chain

The partial pressure of the nitrogen gas is observed as 80.7 kPa.

The term partial pressure has to do with the pressure of a particular gas that is a component of a mixture of gases. Now we have from the question that the pressure of the gas has been observed as 99.4 kPa

The next thing that we must do is to find the vapor pressure of water at that temperature as this could help us to be able to get the partial pressure of the nitrogen at that temperature.

We can now see that the partial pressure of the nitrogen gas is; 99.4 kPa -18.7 kPa = 80.7 kPa

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The chemical equations given would be balanced below

The balanced equation of the various given chemical equations can be determined only when the number of atoms on the product part is the same with the number of atoms on the reactant side.

For 1.)

\(N_{2} + 3H_{2} ----- > 2NH_{3}\)

For 2.)

\(2KCl_{3} ----- > 2KCl + 3O_{2}\)

For 3.)

\(2NaCl + F_{2} ----- > 2NaF + Cl_{2}\)

For 4.)

\(2H_{2} + O_{2} ----- > 2H_{2} O\)

For 5.)

\(Pb(OH)_{2} + 2HCl ----- > 2H_{2} O +PbCl_{2}\)

For 6.)

\(2AlBr_{3} + 3K_{2}SO{4} ---- > 6KBr + Al_{2}(SO_{4})_{3}\)

For 7.)

\(CH_{4} + O_{2} ----- > CO_{2} + 2H_{2} O\)

For 8.)

\(C_{3} H_{8} + 3O_{2} ----- > 3CO_{2} + 4H_{2} O\)

For 9.)

\(C_{8} H_{18} + 8O_{2} ----- > 8CO_{2} + 9H_{2} O\)

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The difference in degrees Fahrenheit between the maximum expected temperatures by the end of the century between the lower and higher emissions scenarios can vary depending on various factors and assumptions.

However, in general, the lower emissions scenario is expected to result in a lower increase in global temperatures compared to the higher emissions scenario.

This means that the maximum expected temperature rise by the end of the century under the lower emissions scenario would be lower than that of the higher emissions scenario.

The specific temperature difference would depend on the specific projections and models used, but it highlights the significant impact that emissions reductions can have on mitigating future temperature increases.

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The mechanism for the reaction of gamma-hydroxyaldehyde in hydrochloric acid can be explained in terms of electron-pushing.

The missing atoms, bonds, charges, nonbonding electrons, and curved arrows can be added to complete the mechanism.

Below is the complete electron-pushing mechanism for the reaction:

Step 1: The lone pair of electrons on the oxygen atom of the gamma-hydroxyaldehyde molecule attacks the hydrogen ion from the hydrochloric acid to form a dative bond between the oxygen atom and the hydrogen ion.

The resulting product is an oxonium ion.

Step 2: The oxygen atom of the oxonium ion donates its lone pair of electrons to the carbon atom attached to the hydroxy group.

This causes the formation of a double bond between the carbon and oxygen atoms, and at the same time, the alcohol molecule represented by ROH acts as a nucleophile and donates its lone pair of electrons to the oxonium ion to form a bond. This generates an intermediate.

Step 3: The electrons from the C-H bond attached to the gamma carbon shift towards the oxygen atom, and the oxygen atom donates its electrons to form a double bond between the carbon and oxygen atoms.

This causes the formation of a carbonyl group.

The intermediate formed in the second step is converted to the product of the reaction.

Step 4: The electron from the C-H bond attached to the beta carbon shifts towards the carbon atom, and the bond between the carbon atom and the oxygen atom breaks to form a double bond. This results in the formation of an none product.

Note that curved arrows indicate the movement of electrons.

The curved arrow originating from an electron-rich site and pointing towards an electron-poor site represents the donation of a pair of electrons.

Similarly, the curved arrow originating from an electron-poor site and pointing towards an electron-rich site represents the acceptance of a pair of electrons.

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copy and paste words under here ill do it