Which alkyl halide is more reactive in an sn2 reaction with a given nucleophile?.

Answer:

wind is just high and low pressure of air, when a high pressure comes and crashes into a low pressure air pocket than it can form a wind storm.

Explanation:

The Uneven heating of the Earth's surface. Earth's rotation and unequal heating of the Earth's surface. air pressure towards regions of lower air pressure. ... air moving from areas of high pressure to areas of low pressure.

This is what will most likely cause a sudden wind to start blowing.

Answer:

By using various chemical compounds to lift the stain while being gentle enough to keep fabric intact.

The situations that depict examples of the direct impact humans have on the balance of Earth's systems and processes are land-use policies and atmospheric and oceanic concentrations of greenhouse gases.

a. Land-use policies: Human land-use policies, such as deforestation, urbanization, and agricultural practices, directly impact Earth's systems. These activities can lead to habitat destruction, loss of biodiversity, soil degradation, and altered water cycles.
Land-use decisions influence the balance of ecosystems, affect climate patterns, and have long-term consequences for the health and stability of Earth's systems.

d. Atmospheric and oceanic concentrations of greenhouse gases: Human activities, such as burning fossil fuels, deforestation, and industrial processes, result in the release of greenhouse gases (e.g., carbon dioxide, methane) into the atmosphere.
These increased concentrations of greenhouse gases contribute to the enhanced greenhouse effect, leading to global warming and climate change. The alteration of Earth's climate system impacts weather patterns, sea levels, ocean acidity, and ecosystems worldwide.
b. Moving tectonic plates and c. Cooling at Earth's core are natural processes that occur over long geological timescales and are not directly influenced by human activities.
While humans indirectly affect geological processes through activities like mining or extraction, their direct impact on the movement of tectonic plates or cooling at Earth's core is negligible.

In summary, land-use policies and the increase in atmospheric and oceanic concentrations of greenhouse gases are examples of how humans directly influence the balance of Earth's systems and processes, with significant implications for the planet's overall health and sustainability.
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\(\sqrt[n]{x} \int\limits^a_b {x} \, dx \geq x^{2} \sqrt{x} \neq \lim_{n \to \infty} a_n \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \pi \sqrt[n]{x} \frac{x}{y} \alpha \beta x_{123} \\ \leq \left \{ {{y=2} \atop {x=2}} \right. \int\limits^a_b {x} \, dx \int\limits^a_b {x} \, dx \geq \geq \geq \geq x^{2} x^{2} x^{2} \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\rig\)

The choice that demonstrates the Law of Conservation of Mass is: The total mass of the reactants in a chemical reaction is equal to the total mass of the products.

The Law of Conservation of Mass states that in a chemical reaction, the total mass of the reactants must be equal to the total mass of the products.

The Law of Conservation of Mass is important because it helps us to understand and predict the outcomes of chemical reactions. It tells us that atoms cannot be created or destroyed in a chemical reaction, only rearranged into different molecules. This principle is crucial for understanding how chemical reactions work and for developing new materials and technologies.

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Most ABn molecules can be derived from five basic geometric shapes.

These shapes are linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral.

Each shape corresponds to a specific arrangement of the central atom (A) and its surrounding atoms (Bn), giving the molecules their unique molecular geometric shape.

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If an IV bag of 500 mL D5W is infusing at a rate of 50 mL/hr, and the IV bag was hung at 11:30 am, the infusion will be complete in 10 hours and 30 minutes.

To determine the time it takes for the infusion to be complete, we need to consider the volume of the IV bag and the infusion rate.

The IV bag contains 500 mL of D5W (5% dextrose in water). The infusion pump is set at a rate of 50 mL/hr, which means 50 mL of the solution is administered every hour.

To find the time it takes for the infusion to be complete, we divide the total volume of the IV bag (500 mL) by the infusion rate (50 mL/hr):

Time = Volume / Rate

Time = 500 mL / 50 mL/hr

Time = 10 hours

Since the IV bag was hung at 11:30 am, we add 10 hours to this time to determine when the infusion will be complete:

11:30 am + 10 hours = 9:30 pm

Therefore, the infusion will be complete at 9:30 pm.

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Answer:

exactly like an answer to my question got deleted

Explanation:

Answer:

a 17 bc it is how it works

Girls are usually completely physically mature by 18 years old.

Puberty refers to the physical transformation of a child's body into an adult one capable of fertile reproduction.

In girls puberty generally attains before two years earlier than the boys. And the exact age of the girls to attain puberty is in between the age of 10 to 14.

Hence the age of girls to attain puberty is 14.

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If the machine company loses the case, the most likely reason would be that the specially manufactured goods exception does not apply, and the contract falls under the Statute of Frauds.

The Statute of Frauds is a legal doctrine that requires certain types of contracts to be in writing to be enforceable. One of the provisions of the Statute of Frauds typically requires contracts for the sale of goods above a certain value to be in writing. However, there is an exception to the Statute of Frauds known as the specially manufactured goods exception. This exception applies when goods are specially manufactured or customized for a particular buyer, making it difficult for the seller to resell them to someone else.

In this case, the machine company argued that the specially manufactured goods exception should apply because they had already started work on the motors and made a substantial beginning on their manufacture. However, if the court determines that the exception does not apply or that the goods were not truly "specially manufactured," the contract may fall under the Statute of Frauds and be unenforceable due to the lack of a written agreement.

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Atomic number = 15 and mass number = 31 where an atom has 15 protons, 15 electrons and 16 neutrons.

An atom consists of a central nucleus that is usually surrounded by one or more electrons.

The atomic number of an atom is equal to the number of protons in the nucleus of an atom or the number of electrons in an electrically neutral atom. Atomic number = Number of protons.

Mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.

Hence, atomic number=15 and mass number=31.

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n = m / M

m = n × M

Nitrogen (N2) - a gas is always with an index 2 if we don't have shown how many molecules are there

m (N2) = 4,5 mol × (2×14.007 g/mol)

m (N2) = 4,5 mol × 28.014 g/mol = 126.063g

if you don't solve with the decimals in class just replace 14.007 with 14

also if you haven't learned abour gasses aways having index 2 then:

m (N2) = 4,5 mol × 14.007 g/mol = 63.0315g

The statements that describe features found in all elimination reactions

-a π bond is formed in the product

-groups are lost from the starting materials

In elimination reactions, a double bond or pi bond is formed as a result of the removal of atoms or functional groups from a molecule. This process involves the elimination of elements, usually hydrogen (H) and a leaving group (X), from adjacent atoms or positions in the molecule. The elimination can occur through different mechanisms such as E1, E2, or E1cb, depending on the reaction conditions and the nature of the substrate.

The formation of a double bond or pi bond is a characteristic feature of elimination reactions. It occurs when the atoms or groups are eliminated from the molecule, resulting in the creation of a double bond between the remaining atoms. This double bond is responsible for the unsaturation and change in molecular structure observed in elimination reactions.

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The complete question is:

Which of the following statements describes features found in all elimination reactions?

Answer:

it is blury

Explanation:

Answer:

B. A measure of the average kinetic energy of a substance.

Explanation:

Temperature is a measure of the average kinetic energy of the particles in an object.

Brainlist pls!

The concentration of each solute is mentioned as follows:

(a). Sugar solute =0.177mole/kg

(b). Ammonium phosphate = 0.592 mole/kg

(c). Glycerol solute = 0.712mole/kg

Molality is defined as the mole of solute per kilogram of the solvent.

(a). Sugar is the solute while water is the solvent.

The molar mass of sugar = 12*12+1*22+11*16 =342g/mol.

A mole of solute= reacting mass /molar mass

Reacting mass 7.37g and molar mass 342g/mol

Mole= 7.37/342=0.0215moles.

For solvent

Density=mass/volume

Mass= density *volume

0.975*125 =121.875g

Converting grams back to kilogram

121.875/1000= 0.1218kg

Molality =0.0215/ 0.1218 =0.177mole/kg

(b). The molar mass of ammonium phosphate = 149.0867g/mol.

A mole of solute= reacting mass /molar mass

Reacting mass 15.5g and molar mass 149.0867g/mol

Mole= 15.5/149.0867=0.1039moles.

For solvent

Density=mass/volume

Mass= density *volume

0.975*180 =175.5g

Converting grams back to kilogram

175.5/1000= 0.1755kg

Molality =0.1039/ 0.1755 =0.592mole/kg

(c). The molar mass of glycerol =92.09382g/mol.

A mole of solute= reacting mass /molar mass

Reacting mass 76.7g and molar mass 92.09382gg/mol

Mole= 76.7/92.09382=0.8328moles.

For solvent

Density=mass/volume

Mass= density *volume

0.975*1200 =1170g

Converting grams back to kilogram

1170/1000= 1.17kg

Molality =0.8328/ 1.17 =0.712mole/kg

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In a thermodynamics experiment, filtering the hot calcium hydroxide solution is necessary to removes any impurities or particulates that may be present in the solution that can affect the outcome of the experiment by introducing errors in the results.

In addition to this, filtering the hot calcium hydroxide solution also helps to ensure that the concentration of the solution remains consistent throughout the experiment. This is important because the concentration of the solution affects the thermodynamic properties of the solution, such as the temperature at which the reaction occurs. Without filtering, the concentration would vary depending on the amount of impurities present, and this could lead to inaccurate results.

Finally, filtering the hot calcium hydroxide solution also helps to prevent clogs or blockages in the equipment used for the experiment. If impurities are able to pass through the equipment, it could cause a disruption in the flow of the solution, which could affect the accuracy of the experiment.

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There can be an electrolytic cell from iron and copper electrodes by connecting a a battery.

A voltaic cell is a cell that produces energy via a spontaneous chemical reaction. An electrolytic cell produces energy by a nonspontaneous chemical reaction.

Now, we know that we can reverse the electrodes in the voltaic cell and connect a cell. In such case, we can be able to create an electrolytic cell from  iron and copper electrodes.

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1) The structure of the compound shows that two carbons are bonded and chiral,

2) they are not superimposable and

3) no plane of symmetry exists between them.

4) Yes, trans-1,2-dibromocyclopentane can exist as a pair of enantiomers.

To construct a model of trans-1,2-dibromo cyclopentane and its mirror image, the structure  of the compound is need to be known. Here's the structural formula of trans-1,2-dibromocyclopentane:

Br         H

|         |

Br         H

 \     /

  C=C

  | |

  C-C

  | |

  C-C

  | |

  C-C

  | |

  H H

There are two carbons in trans-1,2-dibromocyclopentane that are chiral, bonded to four different groups. They are the two carbons in the cyclopentane ring that are not part of the double bond.

No, the molecules are not superimposable. If we try to align the two molecules, we'll find that the bromine atoms on one molecule will not align with the hydrogen atoms on the other molecule.

No, there is no plane of symmetry in the molecule. If we try to draw a plane that would divide the molecule into two equal halves, we'll find that it is not possible without cutting through at least one of the chiral carbons.

Yes, trans-1,2-dibromocyclopentane can exist as a pair of enantiomers. Since there are two chiral carbons in the molecule, there are four possible stereoisomers. However, since the molecule has a plane of symmetry, two of these stereoisomers are identical to their mirror image, and therefore achiral. The remaining two stereoisomers are enantiomers, meaning they are mirror images of each other and cannot be superimposed.

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Answer:

Outer planets are significantly colder than other planets! The answer is B.

Explanation:

The main difference between inner and outer planets is that inner planets have a high temperature compared to outer planets.

Answer:

frequency

Explanation:

Sounds are higher or lower in pitch according to the frequency of vibration of the sound waves producing them. A high frequency (e.g., 880 hertz [Hz; cycles per second]) is perceived as a high pitch and a low frequency (e.g., 55 Hz) as a low pitch.

An addition reaction occurs when HBr is added to alkenes. Always, the more substituted carbon of the alkene receives the bromine (Markovnikov-selectivity)

An ethene-like compound known as a symmetrical alkene has the same groups at both ends of the carbon-carbon double bond. In the presence of organic peroxides or some airborne oxygen, the reaction takes place at ambient temperature. The two scenarios are identical because alkenes produce residues of organic peroxides when they react extremely slowly with oxygen.

Propene is an example of an unsymmetrical alkene because it has distinct groups at either end of the carbon-carbon double bond. The same conditions as with a symmetrical alkene apply for the reaction, but there is a challenge because the hydrogen and bromine can combine in two different ways.

Normally, the hydrogen becomes linked to the carbon with the most hydrogens when a molecule HX adds to a carbon-carbon double bond. The Markovnikov's Rule is what governs this. The peroxide effect or anti-Markovnikov addition occurs when HBr adds on the "wrong way around" in the presence of organic peroxides.

Hydrogen bromide adds to propene using an electrophilic addition process in the absence of peroxides. This results in the outcome that Markovnikov's Rule expected.

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From the calculations, we can see that the number of moles of the oxygen molecules that is present is 21.2 moles.

The moles refers to the n umber of the elementary entities that we have in the substances and in this case we are dealing with the number of moles that we have in the oxygen molecule here.

We know that;

1 mole of O2 contains 6.02 * 10^23 molecules

x moles of the O2 contains 1.275 X 10^25 molecules of O₂

x = 21.2 moles

Thus what we have is about 21.2 moles of oxygen

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Because the base is more potent compared to the acid HF in this situation, the salt solution will be basic. The salt HF is going to generate an acidic solution.

Adding a strong base to a weak acid results in a moderately basic solution. The conjugate base containing the weak acid or the conjugate acid containing the strong base are created when the solution containing a weak acid combines with an identical solutions of a strong base.

Depending on how each salt behaves in water, the solution it produces may be acidic, basic, and neutral. Because the base is more potent compared to the acid HF in this situation, the salt solution will be basic. The salt HF is going to generate an acidic solution.

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Answer:

write down each element and what you need to know about it repeatedly, and it will burn into your brain

Explanation:

By dividing the moles of solute by the litres of solution, the molarity of a solution is determined. We must first determine the moles of Mg(OH)2 present in order to solve for the molarity of this solution.

Using the molar masses of Mg, O, and H, which are 24.31 g/mol, 16.00 g/mol, and 1.01 g/mol, respectively, we may do this. The mass of Mg(OH)2 may be converted to moles using the molar masses. Therefore, 1 mole Mg(OH)2/58.33 g Mg(OH)2 divided by 45.439 g Mg(OH)2 equals 0.7789 moles Mg(OH).

We may get the molarity by dividing the moles of Mg(OH)2 by the litres of solution, or 601.5 mL, now that we know how many moles of Mg(OH)2. Therefore, 1.29 M = 0.7789 moles Mg(OH)2/0.6015 L. Because of this, the molarity of 1.29 M.

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The coefficient for the balanced chemical equation  2C4H10 + 13O2 ---> 8CO2  + 10H2O is 10.

Every chemical equation can be balanced by following some simple steps and rules.

- Count any element on both sides, while paying attention to all   numbers that modify this element’s count in a certain occurrence. If one side has fewer of this element than the other one, add multipliers in front of the molecules that contain this element.

- Go back to step one and repeat with a different element. In complicated cases, you might need to do an element twice or even more often.

- When you are sure everything is balanced, look at the equation again and try to find a greatest common divisor among all multipliers.

so following these rules, we got the stoichiometrically balanced equation.

2C4H10 + 13O2    ----> 8CO2 + 10H2O

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