Draw the major E2 reaction product formed when trans-1-chloro-2-ethylcyclohexane (shown below) reacts with hydroxide ion in DMSO solvent. If more than one isomer can form, just draw the major one. You can use the cyclohexane template shown; no chair illustration required, and no stereochemistry illustration (hash-wedge) required in the product drawing. Notes: 1) there will be SN2 product as wel, but don't draw that, this problem is just focused on E2 reaction. 2) You may find it simpler to just redraw the starting material in a non-chair picture, with hash-wedge illustration of the chiral centers. click to edit CH3 H H Н CH2 CI Но- HT н H DMSO

Answer:

Physical property

Explanation:

There are two types of properties that can occur in a reaction viz: physical nd chemical. Physical property are those ones have do not change the chemical identity of the substance involved as opposed to chemical properties in which the chemical composition of the substances are changed.

Physical properties include signs such as change of phase i.e. solid to gas, melting and boiling points, colour etc.

Answer:

1 mole is equal to 1 moles Tungsten, or 183.84 grams. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between moles Tungsten and gram.

Explanation:

If you placed nails in the beaker of cupper precipitate then the displacement reaction takes place where Iron replaces the Copper in Copper sulfate to form Iron sulfate.

Displacement reaction is defined as the type of chemical reaction in which the atom of the more reactive elements displaces the atom of the less reactive elements from its compound. This reaction occurs in both metals and nonmetals. This is also known as a replacement reaction or substitution reaction. In this reaction, one element that is in the form of a free element replaces the other element from its compound to make a new element and a compound. There is one free element and one compound instead of both being compounds.

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Crossing over occurs during prophase 1 of meiosis, the first stage of the two-part meiotic process in sexually reproducing organisms.

During prophase 1, homologous chromosome chromatids, which are identical copies of each other, come close to each other. Crossing over occurs when a small segment of one chromatid swaps places with a corresponding segment of the other. This process shuffles genetic information between homologous chromosomes, resulting in genetic variation and offspring diversity. Crossing over is an important step in the formation of gametes because it contributes to the generation of new gene combinations. The genetic variation that results is an important factor in evolution, allowing for adaptation to changing environmental conditions.

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Answer:

frozen

Explanation:

I would say because when u freeze water it expands and denifys.

25.4 g of salt was dissolved in distilled water to make 425 mL of solution. 5.94 percent m/v concentration.

The term concentration is defined as a substance is the quantity of solute present in a given quantity of solution. Concentrations are mostly expressed in terms of molarity which is defined as the number of moles of solute in one litre of solution.

Concentration is calculated by dividing a constituent's abundance by the mixture's total volume. Mass concentration, molar concentration, number concentration, and volume concentration are four different categories of mathematical description.

Concentration = mass / volume

Mass =  25.4 g

Volume = 425ml

Concentration = 25.4 g / 425ml x 100

=5.94 percent

Thus, 25.4 g of salt was dissolved in distilled water to make 425 mL of solution. 5.94 percent m/v concentration.

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Answer:

CuCl2 + 2NaNO3 -------> Cu(NO3)2 + 2NaCl

hope this helps

good day mate

The state of Matter in which the  Forces of Attraction is the Weakest is the gaseous state.

The forces of attraction that depends on the intermolecular attractions or the repulsions. The intermolecular repulsions are greater in the gaseous state than the intermolecular forces of attraction. The molecules have the more randomness in the gaseous state as compared to other states. The state of matter that has the least intermolecular forces of the attraction is the gaseous state because of the reason they are in random in the motion.

Thus, in the gaseous state of the matter, the Forces of Attraction the Weakest.

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Answer:

I don't see any following statements

Explanation:

could you give me some and I'll be happy to help : )

Answer:Settlers wanted more land and occasionally forced Native Americans into slavery. Native Americans refused to trade with the European settlers. Native Americans were outnumbered so they began attacking settlers out of fear. Settlers refused to share new farming and hunting techniques with the Native Americans.

Explanation:

The final temperature of the 100 g sample of aluminum is 15.3°C after it absorbs 1379 J of heat at an initial temperature of 0.00°C and the specific heat capacity of aluminum is 0.903 J/g °C.

The specific heat capacity of aluminum is 0.903 J/g °C. As given in the question, 0.00°C is the initial temperature of 100 g sample of aluminum and it absorbs 1379 J of heat. We need to find out the final temperature of the sample of aluminum.

Here's how we can calculate it:

Given,Mass of aluminum, m = 100 g

Heat absorbed by the aluminum, Q = 1379 J

Temperature of aluminum, t1 = 0.00°C (initial temperature)

Specific heat capacity of aluminum, c = 0.903 J/g °C

Temperature of aluminum, t2 = ?Q = mc(t2 - t1)1379 = 100 × 0.903 × (t2 - 0.00)

On solving this equation, we get: t2 = 15.3°

, the final temperature of the 100 g sample of aluminum is 15.3°C.

: The final temperature of the 100 g sample of aluminum is 15.3°C after it absorbs 1379 J of heat at an initial temperature of 0.00°C and the specific heat capacity of aluminum is 0.903 J/g °C.

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To calculate the final temperature of a 100.0 g sample of aluminum that absorbs 1379 J of heat at 0.00 °C, we can use the specific heat capacity of aluminum to determine the amount of heat energy required to raise the temperature of the sample by one degree Celsius.

The specific heat capacity of aluminum is 0.90 J/g°C. This means that it takes 0.90 J of energy to raise the temperature of one gram of aluminum by one degree Celsius.
To calculate the amount of energy required to raise the temperature of the 100.0 g sample by one degree Celsius, we can use the following formula:
Energy = mass x specific heat capacity x change in temperature
Where:
Energy = 1379 J (the amount of energy absorbed by the aluminum)
Mass = 100.0 g
Specific heat capacity = 0.90 J/g°C
Change in temperature = final temperature - initial temperature
We can rearrange this formula to solve for the final temperature:
Final temperature = (energy / (mass x specific heat capacity)) + initial temperature
Substituting the values we know:
Final temperature = (1379 J / (100.0 g x 0.90 J/g°C)) + 0.00 °C
Final temperature = 15.32 °C
Therefore, the final temperature of the aluminum sample is 15.32 °C.

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Increase in the concentration of K+ ions causes the equilibrium to shift backwards and the concentration of K+ ions increases when potassium chloride is added to the red solution.

Increases with the addition of KSCN(aq) forward reactants include SCN-. systems move away from additions, therefore when there are more SCN- present, the system moves forward to restore balance. furthermore SCN-, Q, and K. Therefore, Q must rise to equal K in order to restore equilibrium.

a)The addition of excess potassium chloride (KCl) causes the equilibrium to shift to the left. This is because KCl is a common ion and it competes with Fe3+ for the SCN- ions, thus decreasing the [Fe(SCN)]2+ concentration.

b) The addition of potassium chloride causes the equilibrium to shift to the left because the chloride ions have a similar charge and radius to that of the SCN-, and compete with the SCN- ions for the Fe3+ ions. This means that the increased chloride ions would reduce the amount of [Fe(SCN)]2+ formed.

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Common ion effect on a chemical system:

Fe3+ (aq) + SCN- (aq) => [Fe(SCN)]2+ (aq)

2. why did the addition of potassium thiocyanate cause the equilibrium to shift the way it did? (which ion caused this shift?)

3. a)which way did the equilibrium shift when excess potassium chloride was added to the test solution?

b) why did the addition of potassium chloride cause the equilibrium shift since neither potassium nor chloride ions are common ions to this equilibrium?

Answer:

The laboratory equipment which help to support an apparatus above the surface of the table are:

They are used especially when there is need for heating by the Busen Burner.

Cheers!

The factors that decrease the bioavailability of non-heme iron are: - Oxalates, - High fiber intake (>50 grams/day), Tannins.

Bioavailability refers to the proportion or extent to which a substance, such as a drug or nutrient, is absorbed and becomes available to the body's systemic circulation or target tissues.

It is a measure of the fraction of the administered dose that reaches the systemic circulation in an unchanged form and is therefore able to exert its intended biological effects.

In the context of nutrition, bioavailability specifically refers to the amount of a nutrient that is absorbed from the gastrointestinal tract and can be utilized by the body.

For example, in the case of dietary iron, bioavailability represents the fraction of iron from food that is absorbed and available for physiological functions, such as the synthesis of hemoglobin or other iron-dependent proteins.

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The formula mass of Ca(OH)2 is 74( 40+16*2+1*2). It is just the sum of their atomic masses.

To calculate the formula mass of Ca(OH)2, we need to determine the atomic masses of each element present in the compound and then sum them up.

The atomic mass of calcium (Ca) is approximately 40.08 g/mol. Oxygen (O) has an atomic mass of approximately 16.00 g/mol, and hydrogen (H) has an atomic mass of approximately 1.01 g/mol.

The formula Ca(OH)2 indicates that there are one calcium atom, two hydroxide ions, and two oxygen atoms in the compound. The hydroxide ion (OH-) consists of one oxygen atom and one hydrogen atom.

The formula mass can be calculated as follows:

Formula mass = (atomic mass of Ca) + (2 × atomic mass of O) + (2 × (atomic mass of H + atomic mass of O))

The formula mass of Ca(OH)2 is 74( 40+16*2+1*2).

It is just the sum of their atomic masses.

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The volume of sodium hydroxide produced is approximately 4.277 × 10⁻⁴ km³.

To calculate the volume of sodium hydroxide in cubic kilometers that were produced, we must first convert the density from grams per cubic centimeter to kilograms per cubic meter. Then, we can use the mass of sodium hydroxide produced to find its volume.

Here are the steps to solve the problem:

Step 1: Convert the density from grams per cubic centimeter to kilograms per cubic meter

The density of sodium hydroxide is given as 2.130 g/cm³. To convert this to kg/m³, we need to divide by 1,000 (since 1,000 g = 1 kg) and then multiply by 10³ (since 1 cm³ = 10⁻⁶ m³).

2.130 g/cm³ × (1 kg/1,000 g) × (1,000,000 cm³/1 m³) = 2,130 kg/m³

Therefore, the density of sodium hydroxide is 2,130 kg/m³.

Step 2: Use the mass of sodium hydroxide produced to find its volume

The mass of sodium hydroxide produced is given as 2.01 billion pounds, which we must convert to kilograms:

2.01 billion pounds × (0.4536 kg/1 pound) = 910,476,000 kg

Now we can find the volume of sodium hydroxide produced:

Volume = Mass/Density = 910,476,000 kg/2,130 kg/m³ = 427,714 m³

However, the answer is requested in cubic kilometers, so we must convert from cubic meters to cubic kilometers:

427,714 m³ × (1 km/1000 m)³ = 4.277 × 10⁻⁴ km³.

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Answer:

B

Explanation:

The rate constant is equal to forward rate divided by reverse rate.

K = f/r

-> r = f/K

0.62/0.75 = 0.8267

Answer:

its B

Explanation:

I TOOK THE TEST

The nuclear reactor in Japan had an accident in 2011 when it was hit by an earthquake. The reactor exploded and released a great deal of damaging radiation. The energy for the explosion comes from option(a) i.e, The nucleus of an atom.

An explosion is a sudden increase in volume accompanied by a very strong energy release that usually results in the production of high temperatures and the release of high-pressure gases. High explosive detonations produce supersonic explosions that move through shock waves.

The 2011 Tohoku earthquake and tsunami, which occurred on March 11, 2011, and was the most violent earthquake ever recorded in Japan, were the direct causes of the nuclear tragedy. The nuclear power facility was damaged by the strong tsunami that the earthquake caused, which had waves that were 13 to 14 meters high.

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If a sample of the compound contains 7.4x10²¹ calcium ions, then number of iodide ion is 14.8x10²¹.

As calcium is an element in 4th row and group 2A. All atoms in this group prefers to form simple cation of +2charge.

 Iodine is an element of group 17. All atoms in this group forms anion of -1 charge.

Now,

 the oxidation state of calcium cation requires a reduction process. This reduction occurs in neutral iodine atom. It is initially present as diatomic molecule, with each iodine atom reduce to anion of -1 charge by getting 1 valence electron.

    Base don these simple ion charges. Calcium iodide must combine in a ratio of 1:2 when forming a salt compound.

 So, formula of Calcium iodide is CaI₂.

Hence,

  number of iodine ion must be twice the number of calcium ion.

So,

 Number of calcium ion = 7.4x10²¹

Number of iodide ion = 14.8x10²¹

Thus from the above conclusion we can say that, If a sample of the compound contains 7.4x10²¹ calcium ions, then number of iodide ion is 14.8x10²¹.

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Answer:

Potassium-40 (40K) is a radioactive isotope of potassium which has a long half-life of 1.251×109 years. It makes up 0.012% (120 ppm) of the total amount of potassium found in nature.

...

Potassium-40.

General

Natural abundance 0.0117(1)%

Half-life 1.251(3)×109 y

Parent isotopes Primordial

Decay products 40Ca (β−) 40Ar (EC, γ; β+)

The correct time interval is (2,20) to (4,80).

The average velocity is defined as the velocity or speed of the body throughout the period of motion under consideration. This will always span the entire journey. Recall that velocity is the ratio of distance covered to time taken. The average velocity spans the entire journey and differs from the instantaneous velocity which occurs at a particular point along the journey.

Now we know that the average distance is obtained as the sum of the initial and final velocity multiplied by time and divided by two. Bear in mind that the question already contains the information that we have been told that the average velocity here is 40 km/hr. We can clearly see from the forgoing that the correct time interval is (2,20) to (4,80).

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The pH of a buffer is 9.41. This can be determined by using the Henderson-Hasselbalch equation, which relates the pH of a buffer to the dissociation constant of the weak acid in the buffer and the ratio of the concentrations of the weak acid and its conjugate base.

The formula for the Henderson-Hasselbalch equation is: \(pH = pKa + log ([A-]/[HA])\)

Where: pH is the pH of the buffer

pKa is the dissociation constant of the weak acid in the buffer

[A-] is the concentration of the conjugate base of the weak acid in the buffer

[HA] is the concentration of the weak acid in the buffer

In this case, the weak acid is CH₃COOH, and its conjugate base is NaCH₃COO. The value of Ka for CH₃COOH is 1.8 x 10-5. We need to find the pH of the buffer formed by dissolving 20.0 g NaCH₃COO into a 500.0 mL solution of 0.150 M of CH₃COOH.

First, we need to find the concentration of CH₃COOHin the solution:

\(m \; 0.150 M \; CH_{3}COOH \times 0.500 L = 0.075 \; mol \; CH_{3}COOH\)

Then, we need to find the concentration of NaCH₃COO in the solution. Since we know that 20.0 g NaCH₃COO was dissolved into the solution, we need to convert this to moles:

\(20.0g \; NaCH_{3} COO \times (1 mol \; NaCH_{3} COO /82.03g \;NaCH_{3} COO)\)

= 0.244 mol NaCH₃COO

Then, we can find the concentration of NaCH₃COO in the solution: \(0.244 \;mol \; NaCH_{3}COO/0.500 L = 0.488 M \; NaCH_{3}COO\)

Now that we have the concentrations of both the weak acid and its conjugate base, we can use the Henderson-Hasselbalch equation to find the pH of the buffer: \(pH = pKa + log ([A-]/[HA])pH\)

\(= -log(1.8 \times 10-5) + log(0.488/0.075)pH = 9.41\)

Therefore, the pH of the buffer is 9.41. This means that the buffer is basic. The buffer will resist changes in pH when small amounts of acid or base are added to it, making it useful in a variety of applications.

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Answer:

Volume = 35.2×220×6.0 = 46464 centimeters³

Explanation:

Answer:

The boiling points of alkanes increase with increasing number of carbons. This is because the intermolecular attractive forces.

Explanation:

Answer:

B. A mouse that inherited a strong sense of smell from its parents

D. A mouse with black fur that was passed down through a gene

Explanation:

Answer:

B: A mouse that inherited a strong sense of smell from its parents

D: A mouse with black fur that passed down through a gene

Explanation:

In the article, it's stating that natural selection affects variations that are inherited, not acquired. Inherited means that that it's passed from parents to offspring through genetics. Acquired traits are "acquired" during an organism's life and develop.

Options B and D are correct because a strong sense of smell from its parents and genetically passed black fur are inherited traits. Only inherited traits can be affected by natural selection.

The reaction performed with the elephant toothpaste demonstration is known as a decomposition reaction.

The process of breaking down a chemical compound into smaller molecules, atoms, or ions is known as a decomposition reaction. It is also known as analysis or disintegration. A reaction in which a single substance is broken down into two or more simpler substances is known as a decomposition reaction. The elephant toothpaste demonstration is a simple chemical reaction in which hydrogen peroxide breaks down into oxygen gas and water in a matter of seconds.

The formula for hydrogen peroxide is H₂O₂. It is a pale blue liquid that contains hydrogen, oxygen, and water. When you add yeast, soap, and food coloring, the reaction is more exciting. The yeast acts as a catalyst, breaking down hydrogen peroxide into water and oxygen gas. The oxygen gas created causes the soap to foam up, creating the "elephant toothpaste" effect. The chemical reaction that takes place during the elephant toothpaste demonstration can be written as follows:

2H₂O₂(liquid) → 2H₂O (liquid) + O₂ (gas)

This reaction is an example of a decomposition reaction.

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To find the molality of the solution, we need to first calculate the moles of HNO3 in 1000 g (1 liter) of solution, and then divide by the mass of the solvent (water) in kilograms So the molality of the solution is 27.03 mol/kg.

Molality is a unit of concentration that represents the number of moles of solute per kilogram of solvent. It is denoted by the symbol "m".Molality is a unit of concentration used in chemistry. It is defined as the number of moles of solute dissolved in 1 kilogram of solvent. The molality of a solution is represented by the symbol "m" and is calculated using the following formula.

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Answer:

Explanation:The enthalpy change for the reaction CH4(g) + 2O2(g) arrow CO2(g) + 2H2O(l) is -891 kJ/mol.

Name - Function

The brain regulates a variety of bodily processes, such as movement, sensation, thinking, emotion, and behavior.

Activity and Part of the brain it involves are:

a. Testing a hamburger - Sensory cortex in the parietal lobe

b. Artistic ability - Right hemisphere of the cerebrum

c. Kicking a soccer ball - Motor cortex in the frontal lobe

d. Rate of breathing - Medulla oblongata in the brainstem

e. Tying your shoes - Cerebellum

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When pouring from a stock solution bottle, it is generally recommended to hold onto the bottle by grasping the body of the bottle itself. Here's a detailed explanation: Stability, Spillage Prevention, Accurate Pourin

Stability: Holding the bottle by its body provides better stability and control over the pouring process. The body of the bottle is usually designed to provide a firm grip, allowing you to have better control over the pouring angle and flow rate.

Spillage Prevention: Holding the bottle by its body helps minimize the risk of spilling or tipping the bottle. The body of the bottle is typically wider and more stable compared to the neck or cap. By holding onto the body, you can maintain a better balance and reduce the likelihood of accidental spills.

Accurate Pouring: Holding the bottle by the body allows you to have a clearer view of the pouring spout or opening. This visibility helps ensure that you can accurately aim and control the pouring of the stock solution without splashing or wasting the liquid.

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