Select the correct structure that corresponds to the name. 2, 2, 3-tribromopentane

First ionization energy is the energy required to remove the outermost or highest energy electron from a neutral atom in a gaseous state

Elements that have high ionization energy have smaller atomic radii this is because they require more energy for them to lose an electron

the valence electrons in the outer shell are strongly pulled by the nucleus.

electron affinity is the amount of energy liberated when an electron is added to a neutral atom to form a negatively charged ion

The elements with higher ionization energy have a negative showing that they have the highest tas they will release massive energy if an electron is forced to enter their atoms.

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The rate at which N\(_{2}\) disappears is 0.016 M/s, while the rate at which H\(_{2}\) disappears is 0.0213 M/s.

In the balanced chemical equation N\(_{2}\)(g) + 3 H\(_{2}\) (g) → 2NH\(_{3}\)(g), the stoichiometric coefficients represent the mole ratios between the reactants and products.

Since the reaction rate is given for NH\(_{3}\), we can determine the rates of disappearance of  N\(_{2}\) and H\(_{2}\) by comparing their stoichiometric ratios in the reaction.

The stoichiometric ratio between  N\(_{2}\) and NH\(_{3}\) is 1:2, meaning for every mole of  N\(_{2}\) consumed, 2 moles of NH\(_{3}\) are produced. Therefore, the rate of disappearance of  N\(_{2}\) is half of the rate of formation of NH\(_{3}\).

Similarly, the stoichiometric ratio between H\(_{2}\) and NH\(_{3}\) is 3:2. This means that for every 3 moles of H\(_{2}\) consumed, 2 moles of NH\(_{3}\) are produced. Therefore, the rate of disappearance of  H\(_{2}\) is (2/3) times the rate of formation of NH\(_{3}\).

Given the rate of formation of NH\(_{3}\) as 0.032 M/s, the rate of disappearance of  N\(_{2}\) would be 0.016 M/s (0.032 M/s ÷ 2), and the rate of disappearance of  H\(_{2}\) would be approximately 0.0213 M/s (0.032 M/s × 2/3).

Therefore, the rate of disappearance of  N\(_{2}\) is 0.016 M/s, and the rate of disappearance of  H\(_{2}\) is 0.0213 M/s.

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Answer:

The correct answer would be C

Explanation:

Plz correct me if wrong

The condition in which sugar is most likely to dissolve fastest in a cup of water is when sugar crystals with stirring at 15°C. Therefore, option C is correct.

Dissolution is the process by which a solute dissolves in a solvent to form a homogeneous mixture called a solution. The conditions required for dissolution are:

Thus, option C is correct.

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A good starting point for citation chaining would be a relevant and well-cited article or book that directly relates to your research the topic.

This article or book should have a comprehensive bibliography or  the reference list that you can use to find additional sources. By examining the references cited in the original article, you can identify the other articles and books that are likely to be relevant to your research. Then, you can examine the references in those articles to find even more sources, continuing the process until you have a comprehensive set of relevant sources for your research.

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Answer:

D) Heat flows from the copper cube to the iron cube.

Explanation:

These are the options for the question

A) Heat does not flow between the cubes.

B) Heat flows in both directions between the cubes

C) Heat flows from the iron cube into the copper cube.

D) Heat flows from the copper cube to the iron cube.

From the knowledge of

second law of Thermodynamicss, which says heat moved from higher temperature to lower temperature region, and termal conduction,energy such as heat will only flow from higher temperature to lower temperature, which means the heat will move from higher concentration to lower Concentration. As the cube of copper at 60 degrees is heated the atoms beginnings to vibrate as it acquire energy then moves and flow to the lower temperature part.

Therefore, Heat flows from the copper cube to the iron cube.

The procedural steps in order to get iodinate salicylamide are as follows:

The Electrophilic aromatic substitution is known to be a kind of an organic reaction where an atom is said to be added or attached to a kind of aromatic structure (that is made up of hydrogen) is said to be replaced by an electrophile.

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The most radioactive sample is the one with a half-life of 20 minutes (i).

The most radioactive sample is the one with the shortest half-life because it undergoes decay at a much faster rate than the other samples.

Therefore, sample (i) with a half-life of 20 minutes is the most radioactive, followed by sample (ii) with a half-life of 20 hours, then sample (iii) with a half-life of 20 years, and finally sample (iv) with a half-life of 20 million years, which is the least radioactive.

This is because the shorter the half-life of a radioactive substance, the faster it decays and the more radiation it emits per unit time. In contrast, a substance with a longer half-life decays more slowly and emits radiation at a lower rate.

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The trial that would most likely be the most rapid is option b: 1 gram of chunk calcium reacts with 20 ml of 0.5 M acid.

This is because the reaction rate depends on the concentration of reactants. In this case, the concentration of the acid is the highest in option b compared to the other options. The acid concentration is 0.5 M, which is higher than the acid concentrations in options c and d (1.5 M). Option a has a higher acid concentration (5.0 M), but it uses powdered calcium instead of chunk calcium.

Chunk calcium has a smaller surface area compared to powdered calcium. When calcium reacts with acid, the reaction occurs on the surface of the calcium particles. With chunk calcium, there is a smaller surface area exposed to the acid, resulting in a slower reaction rate. On the other hand, powdered calcium has a larger surface area due to its fine particles, allowing for more contact between the calcium and acid molecules, leading to a faster reaction rate.

Therefore, in option b, the combination of a higher acid concentration and the use of chunk calcium (which provides a smaller surface area) results in a more rapid reaction compared to the other options. The higher acid concentration provides a greater number of acid molecules available to react with the calcium, while the chunk calcium restricts the available surface area for the reaction, balancing the reaction rate to a more optimal level. Therefore, Option B is correct.

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Answer

Explanation

In the Lewis Dot structure, S = N - A is used to calculate the total number of shared and unshared electrons in a molecule.

S represents the TOTAL number of valence shared electrons in a molecule to achieve an octet, N represents the sum of the number of valence electrons of all the atoms of the molecule, and A is the number of valence electrons in an electron pot.

For SiCl₄, the valence electron on each atom coming together to form the molecule is:

Valence electron on Si = 4

Valence Electron on Cl = 7

Total valence electron on SiCl₄ = 4 + (4 x 7) = 32

The least electronegative Si atom is placed at the center, and four Cl atoms are connected with a single bond.

A single bond takes up 2 valence electrons, so for four bonds, 8 valence electrons have been occupied, and we are left with 32 - 8 = 24 valence electrons.

Thus, in the Lewis Dot structure S = N - A , the TOTAL number of valence electrons in a molecule to achieve an octet of SiCl₄ to achieve an octet is

Answer: hydogen

Explanation:

each element that forms cations is a metal, except for one (hydrogen), while each element that forms anions is a nonmetal. This is actually one of the chemical properties of metals and nonmetals: metals tend to form cations, while nonmetals tend to form anions

Answer:

6.C

7.D

8.D

Explanation:

6. Chlorine is a non-metal, so is helium is inert hence Chlorine is the correct answer.

7.Group 18 elements are noble gases with maximum electron configuration hence they do not bond further

8.During bonding metals transfer  electrons i.e. they become less negative and more positive thus having a positive ion

Answer:

It help cause we compost food scraps and other organic wastes. We also reuse and recycle materials to organize for government and industry to develop community recycling materials.

It depend on your opinion as a student.

Explanation:

Hope it helps

Organizing a community to collect waste  and implementing ecological solid waste management greatly helps to reduce pollution and landfilling also creates ideas for recycling.

In order to build and sustain an efficient waste management programme, community-based waste management are partnerships between non-governmental organizations, governmental organizations, and the affected communities.

Community based waste management helps to direct participation and accountability of community members monitoring the collection and reduction of trash waste separation at the homestead level

Similarly they are using priceless and reusable goods on-site , recycling organic trash as well as public collection service collects and transports garbage to a treatment facility.

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the value represented by 4.5x10-6 g is 0.0000045 g it is a representation  in standard notation

To express enormous figures which are in standard notation like 1,300,000 or exceedingly minuscule quantities like 0.0000000000045, scientists use scientific notation. Scientific notation, also referred to as exponential form, is one of the earliest mathematical techniques. It is well regarded by practitioners. People use scientific notation to handle situations where numbers are too large or too small to be calculated easily. Scientists, engineers, and mathematicians all use this technique. where as standard notation is way writing numbers in normal decimal form. The scientific method id most convenient denoting numbers as the numbers will be either too big or too small.

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The ideal bond angle for this molecule would be 109.5 degrees.

The molecule has four bonded atoms and zero lone pairs, resulting in a total of four electron domains.

The ideal bond angle for a molecule with four electron domains is 109.5 degrees. This is because the molecule's electron domains repel each other, and the optimal distance between them is achieved at this angle.

The hybridization of the molecule can be determined by counting the total number of electron domains and identifying the type of hybrid orbitals used. In this case, since there are four electron domains, the hybridization of the molecule is sp3. This means that the central atom has used one s orbital and three p orbitals to form four hybrid orbitals, each of which has 25% s-character and 75% p-character.

Whether the molecule is polar or nonpolar depends on its molecular geometry and the polarity of its individual bonds. A molecule is polar if its shape is asymmetrical, resulting in a partial positive charge on one end and a partial negative charge on the other. On the other hand, a molecule is nonpolar if its shape is symmetrical, resulting in an even distribution of charge.

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Answer:

23

Explanation:

there are 23 pairs of chromosomes

46 individula chromosomes

but each parnet contribute one chromosome to each pair

Answer:

23 :)

Explanation:

Yes I agree that N₂ is the limiting reagent.

Generally, limiting reagent is defined as a substance that does not allow a chemical reaction to take place completely. Basically, if in a chemical reaction limiting reagent is involved , then the atoms/molecules/ions of the other reactant with which it (limiting reagent ) combines will remain free or will remain unreacted.

Yes, I absolutely agree that N₂ is a limiting reactant because you can clearly see that in the right box that after the reaction N₂ gets completely consumed ( not left over ) and is not present in excess. So, N₂ is limiting reactant.

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Answer:

0.47094837228 moles

Explanation:

silver nitrate=169.87g per mol

80/169.87 = 0.47094837228

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.47moles of silver nitrate are there in 80.00 grams of silver nitrate.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Mathematically,

number of moles of substance =given mass of substance ÷ molar mass of substance

Molar mass of 1 mole of silver nitrate=169.87g/mol

mass of silver nitrate= 80g

Substituting all the given values in the above equation, we get

number of moles of silver nitrate=80 ÷169.87

                                                        =0.47moles

Therefore, 0.47moles  of silver nitrate are there in 80.00 grams of silver nitrate.

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To calculate the molarity of the solution, we need to determine the number of moles of sucrose (C12H22O11) and the volume of the solution in liters.

First, let's calculate the number of moles of sucrose (C12H22O11):

Given mass of sucrose = 50.4 g

Molar mass of sucrose (C12H22O11) = 12(12.01 g/mol) + 22(1.01 g/mol) + 11(16.00 g/mol) = 342.34 g/mol

Number of moles of sucrose = mass / molar mass

Number of moles of sucrose = 50.4 g / 342.34 g/mol

Next, let's calculate the volume of the solution in liters:

Given volume of the solution = 355 mL

Volume of the solution = 355 mL / 1000 mL/L

Now, we can calculate the molarity (M) using the formula:

Molarity (M) = moles of solute / volume of solution in liters

Molarity (M) = (50.4 g / 342.34 g/mol) / (355 mL / 1000 mL/L)

Performing the calculations, the molarity of the solution is approximately 0.419 M (moles per liter) to three significant figures.

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The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.

The electrochemical cell is the cell that is capable of generating the electrical energy from the chemical reactions or by the use of the electrical energy to cause the chemical reaction. The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.  

There are the two types of the electrochemical cells is as follows : the galvanic called the electrolytic cells. the galvanic cell is also called as the voltaic cell.

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Examples of herbivores are buffalo, elk, some bird species, mice, squirrels, rabbits, and many more.

To solve this, we must know each and every concept behind herbivores and  carnivores. Therefore, herbivores include cows, goats, giraffes, sheep, and zebras etc.

Herbivores, often known as herbivorous animals, are creatures that eat plants, leaves, fruits, and other plant-based foods for nourishment. They are classified as primary eaters and are found at levels 2 or above in the food supply chain.

Herbivores include cows, goats, giraffes, sheep, and zebras. Interestingly, there really are herbivores who specialize in eating on specific parts of the plant; for example, frugivores are herbivores that graze on fruits, whereas folivores are herbivore that eat on leaves.

Therefore, herbivores include cows, goats, giraffes, sheep, and zebras etc.

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A) The percent ionization of formic acid is 0.0952.

B) The final pH is 13.48.

Explanation for Part A:

When calculating the percent ionization of formic acid (HCO₂H), we consider the concentration of H⁺ ions compared to the initial concentration of formic acid. In this scenario, we have a solution with a concentration of 0.311 M formic acid and 0.189 M sodium formate (NaHCO₂). Since sodium formate dissociates completely, it serves as a source of H+ ions.

In this case, we can assume that the contribution of H⁺ ions from sodium formate is significant compared to the ionization of formic acid. Therefore, the concentration of H⁺ ions is equal to the concentration of sodium formate, which is 0.189 M.

To calculate the percent ionization, we use the formula:

percent ionization = (concentration of H⁺ ions / initial concentration of formic acid) x 100

Substituting the values, we have:

percent ionization = (0.189 / 0.311) x 100 = 0.0952 x 100 = 9.52%

Therefore, the percent ionization of formic acid in the given solution is 0.0952 or 9.52%.

Explanation for Part B:

When mixing acetic acid (CH₃COOH) with sodium hydroxide (NaOH), a neutralization reaction occurs. Acetic acid is a weak acid, while sodium hydroxide is a strong base. The reaction between the two results in the formation of water and sodium acetate (CH₃COONa).

To determine the final pH, we need to consider the reaction and the resulting species in the solution. In this case, we have added 100.0 ml of a solution containing 0.5000 moles of acetic acid per liter to 400.0 ml of 0.5000 M NaOH.

Since acetic acid is a weak acid, we can assume that its ionization is negligible compared to the complete dissociation of NaOH. Therefore, we can consider the solution as a strong base solution.

When a strong base reacts with water, it produces hydroxide ions (OH⁻) which leads to an increase in the concentration of OH⁻ ions. To determine the pH, we need to calculate the concentration of OH⁻ ions, which can be done by considering the moles of NaOH and the total volume of the solution.

Using the given values, we have:

Moles of NaOH = 0.5000 M x 0.4000 L = 0.2000 moles

Total volume of the solution = 0.1000 L + 0.4000 L = 0.5000 L

Concentration of OH⁻ ions = moles of NaOH / total volume of the solution

                           = 0.2000 moles / 0.5000 L

                           = 0.4000 M

Since pH is defined as the negative logarithm (base 10) of the concentration of H⁺ ions, we can use the pOH to determine the pH. The pOH is equal to -log10[OH⁻] in this case.

pOH = -log10[0.4000] = 0.3979

Finally, we can determine the pH using the relationship between pH and pOH:

pH = 14 - pOH = 14 - 0.3979 = 13.6021 ≈ 13.60

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If the bottom of the flask is not cool to the touch while adding the HNO3:H2SO4 solution during the nitration reaction of methyl benzoate, it is an indication that the reaction is proceeding too quickly and that the temperature of the reaction mixture is rising too fast.

What is Solution?

A solution is a homogeneous mixture of two or more substances, where the particles of the substances are evenly distributed at the molecular or ionic level. In a solution, the substance that is present in the greatest amount is called the solvent, and the substances that are present in smaller amounts are called solutes.

It is important to handle the HNO3:H2SO4 mixture with care and follow proper safety procedures, such as wearing protective equipment and working in a well-ventilated area. In case of an emergency, such as an accidental spill or exposure, appropriate first aid and emergency response measures should be taken immediately.

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Answer:

4/5 of a bottle

Explanation:

Sarah, Leah, Haley, Lindsay, and Kim bought 4 bottles of water to share among themselves. They divided each bottle of water into 5 equal portions. Sarah took 1 portion from each bottle of water. Which equation represents how much of a bottle of water Sarah took?

Sarah must have taken 4/5 of a bottle

First, the 4 bottles of water were divided into 5 equal portions;

4 x 5 = 20 portions.

Sara too 1 portion from each bottle;

1 portion x 4 bottles = 4 portions

Which equation represents how much of a bottle water Sarah took?

Since each bottle water was divided into 5 equal proportions and assuming that the bottle waters are of the same volumes, then Sarah has taken 4 out of 5 portions of a bottle water.

Answer: 4 ÷ 5 ﹦4/5  ♡♡♡

Explanation: When you see eqautions like these, always remember that                          the first number goes on the top and the second one goes on the bottom. Hope this helps! (～﹃～)~Hi☆

Answer:

physics teacher walks 4 meters East, 2 meters South, 4 meters West, and finally 2 meters North. Even though the physics teacher has walked a total distance of 12 meters, her displacement is 0 meters. During the course of her motion, she has "covered 12 meters of ground" (distance = 12 m).

The physics instructor has walked a total of 8 metres. Applying the Pythagorean Theorem will reveal this. According to the theorem, the square of the hypotenuse, the longest side of a right triangle, is equal to the sum of the squares of the other two sides.

The overall distance travelled in this instance is the hypotenuse, and the lengths travelled in the east-west and north-south directions are the other two sides. Eight metres, or 4 metres East + 4 metres West, have been covered in an east-west direction.

A total of 8 metres, or 2 metres South + 2 metres North, have been covered in a north-south direction. The total distance travelled is therefore equal to the square root of 8 metres is equal to 8 squared times 8 squared.

By dividing the overall distance travelled into its component parts, this may also be established. The sum of the distances in each direction is the total distance travelled. In this instance, the total distance travelled is 12 metres, or 4 metres east, 2 metres south, 4 metres west, and 2 metres north. The overall distance travelled is 12 metres minus the 8 metres in the East-West direction, which equals 8 metres.

However, because the instructor travelled 4 metres East and 4 metres West, the total distance travelled is really 8 metres.  

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Answer:

The cooler water is denser

Explanation:

Convection drives the boiling of water placed on a stove in a kettle.

During convection, heat is circulated by density differences in portions of a fluid.

Convection is a form of heat transfer in fluids especially gas and liquid.

Answer:

Explanation: in the picture☺️

Explanation:

Mixtures can be separated using a variety of techniques. Chromatography involves solvent separation on a solid medium. Distillation takes advantage of differences in boiling points. Evaporation removes a liquid from a solution to leave a solid material.

Answer:

Cadmium +p= 48

Titanium p=22

Oxygen p=8

Krypton p=36

So the answer is Cadmium which has #48 protons

Explanation:

Answer:

For most of its active life, a star shines due to thermonuclear fusion of hydrogen into helium in its core, releasing energy that traverses the star's interior and then radiates into outer space. At the end of a star's lifetime, its core becomes a stellar remnant : a white dwarf , a neutron star , or, if it is sufficiently massive, a black hole .

Explanation:

Answer:

its nuclear fusion

Explanation:

Answer:

Explanation:

Answer:

The rate of reaction increases.

Explanation:

higher concentration --> more collisions --> rate increases