An E2 elimination proceeds faster when the leaving group and h of syn. Which picture below represents the anti conformation and which represents the syn conformation? Why is the anti conformation favored over the syn conformation? O The anti has more overlap between the HOMO and LUMO. O The syn has more overlap between the HOMO and LUMO. O The HOMO and LUMO have the appropriate symmetries in the anti. O The HOMO and LUMO have the appropriate symmetries in the syn.

Answer:

The marble

Explanation:

Even though they both have kinetic energy, the marble has more since the weight of the bowling ball is heavier, leaving it to stop faster than the marble itself.

Answer:

d) 0.0962 L

Explanation:

The problem describes a dilution process, meaning that we can solve it by using the following equation:

Where subscript 1 stands for the volume and concentration of the concentrated solution, and 2 for those of the diluted solution. That means that in this case:

We input the data:

And solve for V₁:

Finally we convert 96.2 mL to L:

The answer is thus option d).

1. Fluid compressibility (C): Fluid compressibility refers to the measure of how much a fluid's volume changes in response to a change in pressure.

2. Solution-gas/liquid ratio (SGLR): The solution-gas/liquid ratio represents the volume of gas dissolved in a given volume of liquid at a specific pressure and temperature.

3. Fluid formation volume factor (FVF): The fluid formation volume factor represents the ratio of the volume of a fluid at reservoir conditions (pressure and temperature) to its volume at surface conditions.

4. Fluid densities (ρ): Fluid densities refer to the mass per unit volume of a fluid.

5. Fluid viscosities (μ): Fluid viscosities represent the measure of a fluid's resistance to flow.

1.  Equation: C = -1/V * dV/dP

  Symbol: C

  Unit: 1/Pascal (Pa^-1)

  Correlation: The compressibility of fluids can vary depending on the fluid type. For ideal gases, the compressibility is inversely proportional to pressure.

2.Equation: SGLR = V_gas / V_liquid

  Symbol: SGLR

  Unit: Volumetric ratio (e.g., scf/bbl)

  Correlation: The solution-gas/liquid ratio is influenced by the pressure and temperature conditions, as well as the composition of the fluid.

3. Equation: FVF = V_reservoir / V_surface

  Symbol: FVF

  Unit: Volumetric ratio (e.g., bbl/STB)

  Correlation: The fluid formation volume factor depends on the composition and properties of the fluid, as well as the reservoir conditions.

4. Equation: ρ = m / V

  Symbol: ρ

  Unit: Mass per unit volume (e.g., kg/m^3)

  Correlation: Fluid densities can vary depending on the type and composition of the fluid. For example, water has a density of approximately 1000 kg/m^3.

5. Equation: No single equation; viscosity is measured experimentally using viscometers.

  Symbol: μ

  Unit: Pascal-second (Pa·s) or centipoise (cP)

  Correlation: The viscosity of a fluid is influenced by temperature and pressure. Different fluids exhibit different viscosities, ranging from low-viscosity fluids like water to high-viscosity fluids like heavy oil.

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To prepare 400 ml of a 3 mmol solution of EDTA, you will need approximately 0.447 grams of EDTA.

To prepare a 400 ml solution of EDTA with a concentration of 3 mmol/L, we need to calculate the amount of EDTA required in grams.

First, we need to convert the concentration from mmol/L to mol/L. Since 1 mmol is equal to 0.001 mol, the concentration becomes 0.003 mol/L.

Next, we multiply the concentration by the volume of the solution in liters to find the number of moles required. The volume is given as 400 ml, which is equivalent to 0.4 L.

Thus, the number of moles needed can be calculated as follows: 0.003 mol/L * 0.4 L = 0.0012 mol.

To convert moles to grams, we use the molecular weight of EDTA, which is given as 372.24 g/mol. Multiplying the number of moles by the molecular weight gives us the mass of EDTA required:

0.0012 mol * 372.24 g/mol = 0.446688 g.

Therefore, to prepare 400 ml of a 3 mmol solution of EDTA, you will need approximately 0.447 grams of EDTA.

In conclusion, you need approximately 0.447 grams of EDTA to prepare a 400 ml solution with a concentration of 3 mmol/L.

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Answer:

Well, it´s dangerous because it displaces oxygen in the blood and deprives the heart, the brain and other vital organs.

Explanation:

What i mean by that is that breathing carbon monoxide reduces the amount of oxygen that can be transported in the blood stream to critical organs like the heart and brain. It can also causes E.g. dizziness, confusion, unconsciousness and even death.

I hope this answered yor question, if i did misundertood the question do tell me and i will try my best to explain it. Have a nice day!! :)

When aqueous ammonia is used to neutralize sulfuric acid and nitric acid, it produces two salts that are extensively used as fertilizers: Ammonium sulfate, and Ammonium nitrate.

Ammonium sulfate [(NH₄)₂SO₄] - This salt is produced when aqueous ammonia is used to neutralize sulfuric acid (H₂SO₄). Ammonium sulfate is a common fertilizer that is often used as a source of nitrogen and sulfur for plants.

Ammonium nitrate [NH₄NO₃] - This salt is produced when aqueous ammonia is used to neutralize nitric acid (HNO₃). Ammonium nitrate is also a common fertilizer that is often used as a source of nitrogen for plants. However, due to its potential for use in explosives, its sale is strictly regulated in many countries.

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1-Bromo-1-chloropropane has a bromine atom bonded to the first carbon (C1), a chlorine atom bonded to the second carbon (C2), and the remaining carbons connected in a chain. The highest Newman projection looking down the C1-C2 bond shows the C1 atom in the front, the C2 atom at the back, and the other atoms (Br, C3, and Cl) attached to the C1 atom.

Here's the structure of 1-bromo-1-chloropropane, showing wedges and dashes:

     Br

      |

      C

     /

    C

   /

  C - Cl

To draw the highest Newman projection looking down the C1-C2 bond, we need to imagine looking along that bond with the C1 atom in front and the C2 atom at the back. The attached atoms (Br, C1, C3, and Cl) will be represented as circles.

Here's the highest Newman projection:

      Br

       |

       C3

      /

     C1

    /

   C2

  /

 Cl

The C1 atom is represented by the intersection of the horizontal and vertical lines, while the C2 atom is shown as the circle at the end of the vertical line. The other atoms (Br, C3, and Cl) are attached to the C1 atom, and their positions are represented by their corresponding circles.

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We have the balanced equation of the reaction:

NaOH (aq) + HCl (aq) → NaCl (aq) + H2O (l)

Now, to calculate the moles of water needed, we must look at the stoichiometric coefficients of the reaction. The stoichiometric coefficients are the numbers that come before the molecule.

In this case, all the molecules have a stoichiometric coefficient equal to 1, that is, the ratio between all the compounds is 1. Therefore, the moles of water needed will be:

Answer: When there are 4 moles of HCl, it will be produced 4 moles of H2O

Answer:

Concept of chemi-fluorescence

Explanation:

A glow stick usually consists of two chemicals in a larger plastic tube: , a base catalyst (mostly sodium salicylate), and a suitable dye (sensitizer, or fluorophor). This creates an exergonic reaction when mixed together.

When a glow stick is bent, the flurophor which is a chemical that easily re-emits light upon excitation in smaller capsules is released into the other substance, there by causing it to emit radiation/light in the uv-visible region. The brightness and longevity of the glow stick is determined by varying the concentration of these chemicals.

I hope this explanation clarifies things.

In the given reaction  ₉₆²⁴⁶Cm + ₆¹²C ---> 4 ¹on + X  it shows an example of an artificial transmutation reaction.

An artificial transmutation reaction may resemble this. The method of causing nuclear reactions by blasting atomic nuclei with high-energy particles like ions or neutrons is referred to as artificial transmutation.

In this instance, the transmutation is induced by bombarding the carbon nucleus (C) with additional particles or a high-energy beam, resulting in the production of the following products: Element X and 4 1on (Helium-4)

Blasting an element with a basic particle, an element can be artificially transmuted into a different element.

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Answer:

Tissue is a group of cells that have similar structure and that function together as a unit. There are four main tissue types in the body: epithelial, connective, muscle, and nervous. ...

Answer:

B and C

Explanation:

is it multiple choice question??

Van der Waals forces are the interaction between the molecules and the atoms. It increases with an increase in the molecular size and the number of electrons. Thus, options B and C are correct.

Van der Waals forces are the weak forces of attraction and repulsion present between the atoms and the molecules of the compounds. They are also called London Dispersion Forces and dipole-dipole forces.

An increase in the number of electrons and size of the molecule increases the surface area and the electron cloud which in turn, increases the Van der Waals force.

The intermolecular force increases as in large atoms or molecules the valence are held loosely as they are far from the nucleus or the center of the atom.

Therefore, the size and the electron increase the Van der Waals force.

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3H₂(g)+N₂(g)——> 2NH₃ (g) , here the volume of NH₃(g) measured at STP is produced when 2.15 L of H₂(g) reacts is approximately 1.58 L of NH₃ gas will be produced when 2.15 L of H₂ reacts at STP.

3H₂(g) + N₂(g) → 2NH₃ (g)

3 moles of H₂ reacts to produce 2 moles of NH3. Therefore, one need to first calculate the number of moles of H₂ in 2.15 L.

PV = nRT

P= is the pressure (STP has a pressure of 1 atm), V =is the volume in liters, n is the number of moles, R= is the ideal gas constant (0.0821 L·atm/mol·K), T =is the temperature in Kelvin (STP has a temperature of 273 K).

Here, 

n(H₂) = (P(H₂) × V(H₂)) / (R × T)

Assuming the pressure of H₂ is also 1 atm at STP, and substituting the values:

n(H₂) = (1 atm × 2.15 L) / (0.0821 L·atm/mol·K × 273 K) n(H₂) ≈ 0.0954 mol

According to the balanced equation, 3 moles of H₂ react to produce 2 moles of NH3. Therefore, one can determine the number of moles of NH₃ produced:

n(NH₃ ) = (2/3) × n(H₂) n(NH₃ )

≈ (2/3) × 0.0954 mol n(NH₃ )

≈ 0.0636 mol

V(NH₃ ) = (n(NH₃  × R × T) / P(STP)

Substituting the values:

V(NH₃ ) = (0.0636 mol × 0.0821 L·atm/mol·K × 273 K) / (1 atm) V(NH₃ )

≈ 1.58 L

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Molarity= No of moles of solute * 1000 / vol solution in ml

No of moles= Given mass / Molar mass

Given Mass of solute (H2O2)= 10g

Molar mass of H2O2=34gmol^-1

No of moles= 10/34= 0.294 moles

Volume of solution=50ml

Molarity =   0.294*1000 / 50

Molarity = 5.8M

Answer: Combustion

Explanation:

Methane gas or natural gas is the hydrocarbon that reacts with oxygen as shown below: CH4 + 2O2 → CO2 + 2H2O There are two types of combustion reactions: complete and incomplete combustion. Therefore there are four products, carbon dioxide, water, carbon, and carbon monoxide.

Answer:

La distancia recorrida por el móvil es 228.600 m

Explanation:

El movimiento rectilíneo uniforme MRU es el movimiento que describe un cuerpo o partícula a través de una línea recta a velocidad constante. Es decir:, en este caso el movimiento es lineal en una única dirección  y la velocidad de desplazamiento es constante.

La velocidad es una magnitud física que expresa la relación entre el espacio recorrido por un objeto y el tiempo empleado para ello mediante la expresión:

\(velocidad=\frac{distancia}{tiempo}\)

En este caso:

Reemplazando:

\(25 \frac{m}{s} =\frac{distancia}{9144 s}\)

y resolviendo obtienes:

distancia= 25\(\frac{m}{s}\) *9144 s

distancia= 228.600 m

La distancia recorrida por el móvil es 228.600 m

A movement is rectilinear uniform when an "object" (for example) travels in a straight path at a constant speed, given that its acceleration is zero.

Velocity (v) = 25m/s

Distance (d) = ?

Time (t) = 2.54hr = 9,144 s

Looking at the data, we see that the time is in hr, but we need it in seconds. Therefore we do a conversion from hours to minutes, taking into account that 1 hour is equal to 3600 seconds.

To calculate the distance traveled by the mobile, the speed is multiplied by the time taken.

For this the following formula is applied:

We apply the data in the formula; to solve for the distance.

Answer: The distance traveled by the mobile is 228,600 meters.

Answer:

All the gases have the same number of molecules.

Answer:

Density = 0.32g/mL

Explanation:

Density of a substance can be calculated using the formula:

Density (g/mL) = mass (g)/volume (mL)

According to the information provided in this question, mass of the substance = 80grams, volume = 250cm³/mL

Note that, the pressure and temperature are not needed to calculate the density of the substance.

Density = 80/250

Density = 0.32g/mL

Answer:

i dont get it???????

Explanation:

Answer: 4.7 L

Explanation:

Answer:

It is not possible to accurately determine whether the system or the surroundings performs work in a chemical reaction without more information about the specific reaction and the conditions under which it occurs.

In general, the work done in a chemical reaction can be affected by several factors, including the pressure, volume, and temperature of the system, as well as the nature of the reactants and products. Some reactions may result in the system doing work on the surroundings, such as when gases expand and do work on their surroundings by pushing against a piston or other external object. Other reactions may result in the surroundings doing work on the system, such as when gases are compressed and their surroundings do work on them. Still other reactions may result in essentially no work being performed, such as when the reactants and products are in equilibrium or when the volume of the system remains constant.

Without more information about the specific reaction in question, it is not possible to accurately determine whether the system or the surroundings performs work.

One tube has a buffered solution + acid and the other tube has water + acid. To decide whether or not the solution is buffered, a simple pH test can be done. An acid-base indicator can be used to determine the pH of each solution.

A buffered solution is defined as a solution that can withstand minor changes in pH upon the addition of small amounts of an acid or base.

Consider the following steps:

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When the limiting reactant in a chemical reaction is completely used , the reaction stops .

The reactant which is completely consumed in the reaction after the completion of reaction is called limiting reactant .it limits how much product can be formed .

It depends on the mole ratio , not completely on the mass of the reactants present .

a chemical reaction in which two or more substances undergo changes under certain conditions to make another compound or product

the compound which reacts are called as reactants and the compound or substance that is formed is called as product .

left side is for reactant and right side is for product and it between reactant and product there is an arrow present .

For increase the rate of reaction we add catalyst to it which faster the reaction and return back at the end of the reaction as it is .

if we do not use sufficient amount of reactant in that case the the product can't be formed and the reaction stops .

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Answer: D) none of the above

Explanation:

The student might be inconsistent in using different balances when weighing the small product. Using a well-calibrated microbalance and the same one every time can help in attaining accurate measurements of small masses.

The student's difficulty in accurately weighing a small amount of product could be due to option a) They are utilizing a different balance each time. This could introduce errors due to inconsistencies in the calibration and accuracy of different balances. However, it is not accurate that it is impossible to weigh very small amounts (option b) or that only a special scale that only the TA can use is needed (option c). Small masses can be weighed accurately with a well-calibrated microbalance. These instruments are designed to accurately measure small weights and are often found in laboratory settings. It is also crucial to use the same balance each time to ensure consistent results.

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Answer:

Hope this helps! :)

Explanation:

The ground state electron configuration is the arrangement of electrons around the nucleus of an atom with lower energy levels. Electrons occupying the orbitals of varying energy levels naturally fall towards the lowest energy state or ground state. For example, the ground state electron configuration of oxygen is 1s2 2s2 2p4

(But to simplify it, A short hand notation to indicate the electron orbitals which are filled in a particular atom.)

The diagonal rule basically says that electrons fill orbitals in order of increasing "quantum number sum" (n + ℓ). When two orbitals share the same "quantum number sum", they will be filled in order of increasing n.

Answer:

There is only one sub level in the first principal energy level, and it is 1s

Explanation:

trust

Large particles usually get smaller as a result of surface reactions. Both heating and freezing effects of tiny particles on the climate are seen.

Weathering can be classified as either physical or chemical. There is a wide variety in soil particle size due to variations in weathering processes.The overall surface area increases when the size is reduced more. This is significant since most chemical changes start at an object's surface.

The Earth's materials are the four major elements that make up the earth's crust. The earth is made up of minerals, rocks, soil, and water. Earth materials include the necessary building components for life, agriculture, and industry.

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The no. of moles present in 955.7g of Topaz is found to be 4.30 moles.

The no. of moles of a material equals the ratio of its given mass to the mass of one mole of that material in a chemical reaction.

We can calculate the no. of moles of a chemical whose mass is known. To calculate the amount of moles in a sample, just weigh it and divide the mass by the molecular mass. The quotient obtained in this case is equal to the no. of moles.

Topaz is an aluminum and fluorine silicate mineral that is used in jewellery as a gemstone and in other adornments. Topaz is colourless in its normal condition, but trace element impurities can turn it light blue, golden brown, or yellow orange.

Given:

Mass = 955.7g

Chemical formula of Topaz = \(Al_2SiO_4F_4\)

To find:

No. of moles = ?

Formula:

No. of moles = Mass / Molar mass

Calculations:

Molar mass = (2 x 26.98) + 28.08 + (4 x 16) + (4 x 18.99)

Molar mass = 222g/mol

No. of moles = 955.7 / 222

No. of moles = 4.30 moles

Result:

4.30 moles is present in 955.7g of Topaz.

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Answer:

A. A floor heating vent sends warm air throughout a room

Explanation:

Convection can occur in liquids and gases. It is when cold air or liquid sinks towards a heat source, gets heated and then rises above. It cools when it is away from the heat source and sinks back down to be heated by the heat source again.