How many grams are present in 2.5 moles of glucose (C6H12O6)?​

Answer:

Electrolysis of Al₂O₃: 4Al³⁺ (s) + 6O²⁺ (g) → 4Al (s) + 3O₂ (g)

Reduction of Elemental Fe: 2Fe₂O₃ (s) + 3C (s) → 4Fe (s) + 3CO₂ (g)

Atom Economy for Electrolysis of Al₂O₃: 52.9227%

Atom Economy for Reduction of Fe₂O₃: 62.8534%

Explanation:

Step 1: Define Compounds

Aluminum Oxide - Al₂O₃

Iron Oxide - Fe₂O₃

Step 2: RxN

Al₂O₃ (s) → Al (s) + O₂ (g)

Fe₂O₃ (s) + C (s) → Fe (s) + CO₂ (g)

Step 3: Balance RxN

2Al₂O₃ (s) → 4Al (s) + 3O₂ (g)

This is ONLY the decomposition reaction for Aluminum oxide, NOT the electrolysis.

2Fe₂O₃ (s) + 3C (s) → 4Fe (s) + 3CO₂ (g)

This is the final single-replacement reaction for the reduction of Iron Oxide to Iron.

Step 4: Electrolysis of Al₂O₃

We will have to use oxidation-reduction reactions (half-reactions). Let's break up the reaction into it's elements.

Al³⁺ + ? → Al

Al³⁺ + 3e⁻ → Al

O²⁻ → O₂ + ?

2O²⁻ → O₂ + ?

2O²⁻ → O₂ + 4e⁻

Our half reactions:

Al³⁺ + 3e⁻ → Al

2O²⁻ → O₂ + 4e⁻

4 (Al³⁺ + 3e⁻ → Al) = 4Al³⁺ + 12e⁻ → 4Al

3 (2O²⁻ → O₂ + 4e⁻) = 6O²⁻ → 3O₂ + 12e⁻

4Al³⁺ + 12e⁻ + 6O²⁺ → 4Al + 3O₂ + 12e⁻

4Al³⁺ (s) + 6O²⁺ (g) → 4Al (s) + 3O₂ (g)

Step 5: Atom Economy

According to GCSE and my own deciphering, your equation for Atom Economy is essentially calculating for something similar to percent yield (but not quite).

\(Atom \hspace{3} Economy \hspace{3} = \hspace{3} \frac{Molar \hspace{3} Mass \hspace{3} of \hspace{3} Product}{Molar \hspace{3} Mass \hspace{3} of \hspace{3} All \hspace{3} Reactants} \cdot 100 \%\)

Molar Mass of Al - 26.98 g/mol

Molar Mass of O - 16.00 g/mol

Reactants: 4(26.98 g/mol) + 6(16.00 g/mol) = 203.92 g/mol

Products (Al as end product): 4(26.98 g/mol) = 107.92 g/mol

\(Atom \hspace{3} Economy \hspace{3} = \hspace{3} \frac{107.92 \hspace{3} g/mol}{203.92 \hspace{3} g/mol} \cdot 100 \%=52.9227 \%\)

Molar Mass of Fe - 55.85 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of C - 12.01 g/mol

Reactants: 4(55.85 g/mol) + 6(16.00 g/mol) + 3(12.01 g/mol) = 355.43 g/mol

Products (Fe as end product): 4(55.85 g/mol) = 223.4 g/mol

\(Atom \hspace{3} Economy \hspace{3} = \hspace{3} \frac{223.4 \hspace{3} g/mol}{355.43 \hspace{3} g/mol} \cdot 100 \%=62.8534\%\)

Step 6: Check for significant figures

Since we are not given any values, we don't really need to change any numbers to fit sig fig rules.

You have two gases, A and B, each in its own container of equal volume, pressure, and temperature. As a result, each gas must contain the same number of moles.

Because the two temperatures are the same, the two samples' average kinetic energies are also the same.

Kinetic energy is a type of energy that a moving object or particle possesses. When an item undergoes work—the transfer of energy—by being subjected to a net force, it accelerates and acquires kinetic energy. A moving object or particle's kinetic energy, which depends on both mass and speed, is one of its properties. The type of motion could be vibration, rotation on an axis, translation (or travel along a path from one place to another), or any combination of these.

A body's translational kinetic energy, or 1/2mv2, is equal to one-half the product of its mass, m, and the square of its velocity, v. In chemistry, the moles, sometimes spelled mol, is a common scientific measurement unit for significant amounts of very small objects like atoms, molecules, or other predetermined particles. The mole represents 6.02214076 1023 units, which is a very huge number.

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Answer:

d.They do not want to live near towers that transfer electricity

Explanation:

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass of sphere = 4000 g

Volume of a sphere is given by

\(V = \frac{4}{3} \pi {r}^{3} \\ \)

where r is the radius

\(r = \frac{diameter}{2} \\ \)

From the question

diameter = 150 cm

\(r = \frac{150}{2} = 75 \: \: \: cm\)

The volume of the sphere is

\(V = \frac{4}{3} \times {75}^{3} \pi \\ = \frac{4}{3} \times 421875\pi \\ = 562500\pi \\ = 1767145.86...\)

We have the answer as

volume = 1767145.86 cm³

So we have

\(density = \frac{4000}{1767145.86} \\ = 0.002263536...\)

We have the final answer as

Hope this helps you

The 1H NMR signal for an OH or NH proton usually does not exhibit spin-spin splitting because these protons exchange rapidly with other protons in solution.

This exchange leads to broadening of the NMR signal, making it difficult to observe spin-spin splitting. However, if the exchange rate is slowed down, spin-spin splitting may be observed.

                            Additionally, if the OH or NH proton is part of a larger molecule or functional group, the surrounding atoms and chemical environment can affect the NMR signal and potentially lead to spin-spin splitting.
The statement is true. The 1H NMR signal for an OH or NH proton typically does not exhibit spin-spin splitting due to the rapid exchange of these protons with the surrounding solvent, which effectively averages out the spin-spin interactions. This results in a broad, singlet peak for these types of protons in the NMR spectrum.

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Answer:

This means that the pressure would become double of it's initial pressure.

Explanation:

Key statements:

- Constant temperature

- What happens to the pressure of the gas if the volume was

smooshed down to half its original size?

Basically the question is asking about the relationship between pressure and volume at constant temperature. This is given by Boyle's law.

Boyle's law states that the volume of a fixed mass of gas is inversely proportional to it's volume at a fixed temperature.

This is given by;

P1V1 = P2V2

Where;

P1 = Initial pressure

P2 = Final pressure

V1 = Initial Volume

V2 = Final Volume

From the question;

V2 = V1/2

Inserting it into the equation;

P1 V1 = P2 V1/2

Divide all through by  V1

P1  = P2 /2

P2 = 2 P1

This means that the pressure would become double of it's initial pressure.

Answer:

The reason is carbon's ability to form stable bonds with many elements, including itself. 

Explanation:

This property allows carbon to form a huge variety of very large and complex molecules. In fact, there are nearly 10 million carbon-based compounds in living things!

Answer:

Explanation:

The reason is that carbon is able to form stable bonds with many elements, including itself, which allows carbon to form a huge variety of very large and complex molecules.

Answer:

An energy pyramid shows the flow of energy at each trophic level in an ecosystem. A pyramid shape is used because energy is lost at each trophic level when organisms use it up.

Explanation:

For vacancy diffusion, an atom must have sufficient activation energy to break bonds with neighboring atoms and move to an adjacent vacancy.

In solids, vacancy diffusion occurs when atoms move through crystal structures by jumping from one lattice site to another. To make such a move, an atom needs enough energy to overcome the bonding forces holding it in its current position. This energy is known as the activation energy.

By possessing sufficient activation energy, an atom can break its bonds with neighboring atoms, creating a temporary vacancy or defect in the lattice. The atom can then migrate to an adjacent lattice site or vacancy, filling the empty space.

The activation energy required for vacancy diffusion depends on the strength of the atomic bonds and the nature of the crystal structure. Higher activation energies are typically associated with stronger bonds, making diffusion less likely to occur at lower temperatures. As temperature increases, atoms acquire greater thermal energy, increasing the probability of overcoming the activation energy barrier and facilitating vacancy diffusion.

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Answer:

165.3 cm^3

Explanation: hope this is correct!!

P1 * V1 / T1 = P2 * V2 / T2

P1 = 84.6 kPa

V1 = 215 cm³

T1 = 23.5°C = 23.5 + 273 K = 296.5 K

At STP:

P2 = 101.3 kPa

V2 = ?

T2 = 273 K

To test for the completeness of this chemical reaction you will add several drops of your copper solution to 10 drops of zinc solution in a test tube.

What is a chemical reaction? Chemical reactions are the processes in which one or more substances are transformed into new substances through the breaking and formation of chemical bonds. A chemical reaction is usually indicated by the presence of a light or heat source, the evolution of gas, the formation of a precipitate, or a significant color change.A chemical reaction can be a complex process, and numerous factors can influence the rate and efficiency of the reaction. These factors can include temperature, the concentration of the reactants, and the presence of catalysts or inhibitors.

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Answer:

It has mass but no charge.

Explanation:

The question asks to describe ONE of the subatomic particles that could be found at location X in the model, so you should think of protons and neutrons. Now all of the answers do NOT describe a proton, but the first answer describes a neutron. Neutrons have mass but no charge. Why? The neutron has two down quarks and one up quark, down quarks, have a charge of -1/3, and up quarks have a charge of +2/3. Doing the math, you'd see that (-1/3)2+2/3 is equal to a neutral charge. So a neutron WILL have a mass, but will NOT have a charge, as they are used to hold the nucleus together.

Answer:

the last one

Explanation:

Answer:The amount of barium deposited can be calculated using Faraday's law of electrolysis:

moles of barium deposited = (charge passed) / (Faraday's constant)

mass of barium deposited = (moles of barium deposited) x (molar mass of barium)

The Faraday's constant is the charge per mole of electrons and is equal to 96,485 C/mol.

Given that 198 C pass through the molten barium salt, we can calculate the moles of barium deposited as:

moles of barium deposited = (198 C) / (96,485 C/mol) = 0.002052 mol

The molar mass of barium is 137.33 g/mol. Therefore, the mass of barium deposited is:

mass of barium deposited = (0.002052 mol) x (137.33 g/mol) = 0.282 g

Thus, 0.282 grams of barium are deposited.

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Answer:

the answer is true

Explanation:

the reason why is because if you look at it a chemical in a repeating form os a compound so that means it is the same properties for food.

Answer:

True

Explanation:

Many different species eat grass, and rabbits can eat other plants besides grass. Foxes, in turn, can eat many types of animals and plants. Each of these living things can be a part of multiple food chains.

Answer:

8 atoms of oxygen.

Explanation:

Given parameter:

Mass of magnesium phosphate  = 15g

Unknown:

Number of oxygen atoms  = ?

Solution:

The formula of the compound is;

        Mg₃(PO₄)₂;

 Number of atoms oxygen  = 2(4) = 8 atoms of oxygen.

The proposed solution, which has 10.0 grams of glucose in 100 gram of water, has a freezing point of 1.034 C.

The degree of heat in which a liquid becomes solid. precisely the temperatures at which a material's solid and liquid states are balanced at atmospheric pressure.

If a substance is kept below its freezing point, it may either become more or less dangerous. The freezing point additionally offers an essential safety standard for evaluating the impacts of occupational exposure to cold conditions.

m = molality

i = van 'toff factor,

molality = n/w*t of solvent

n = w*t of Glucose/M* w t

= 10/180*1/0.1

=0.555 w* t

= 1.86*0.555*1

= 1.034

T (solvent) - d= 0-1.034

freezing point = -1.034C

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The depreciation expense for the year ended December 31, 2016, given the straight-line method, a 5-year useful life, and a salvage value of $600, is $1,320.

The depreciation expense for the year ended December 31, 2016, can be calculated using the straight-line method, which allocates the cost of an asset evenly over its useful life. In this case, the equipment was purchased for $7,200 on July 1, 2016, and has a useful life of 5 years with a salvage value of $600.

To calculate the annual depreciation expense, we need to determine the depreciable cost, which is the original cost minus the salvage value. In this case, the depreciable cost would be $7,200 - $600 = $6,600.

Next, we divide the depreciable cost by the useful life to determine the annual depreciation expense. In this case, the annual depreciation expense would be $6,600 / 5 = $1,320.

Therefore, the depreciation expense for the year ended December 31, 2016, given the straight-line method, a 5-year useful life, and a salvage value of $600, is $1,320.

The depreciation expense is calculated by subtracting the salvage value from the original cost to determine the depreciable cost. Then, the depreciable cost is divided by the useful life of the asset to determine the annual depreciation expense.

In this case, the firm purchased equipment for $7,200 on July 1, 2016, with a 5-year useful life and a salvage value of $600. Therefore, the annual depreciation expense for the year ended December 31, 2016, would be $1,320.

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Answer:

Na

Explanation:

sodium has mass number 23 and atomic number 11 so number of protons =number of electrons =atomic number which is 11 and number of neutrons=mass number-number of protons =23-11=12

Yes, O2 and H2O have hydrogen bonding. Hydrogen bonding is a type of chemical bond that occurs when a hydrogen atom is covalently bonded to a highly electronegative atom, such as oxygen or nitrogen.

This creates a partial positive charge on the hydrogen atom and a partial negative charge on the other atom. Oxygen (O2) is a diatomic molecule, meaning it is made up of two oxygen atoms. In this case, it doesn't possess a hydrogen atom to form hydrogen bond with another molecule. In the case of water (H2O), hydrogen bonding does occur. The oxygen atom in water is highly electronegative, and it creates a partial negative charge on the oxygen atom. The two hydrogen atoms in water each have a partial positive charge, and they can form hydrogen bonds with other oxygen atoms in other water molecules. This is what gives water its unique properties such as high boiling point, high surface tension, and high heat of vaporization.

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Answer:

Electronegativity decrease in group from top to bottom

Explanation:

At 500 K, the equilibrium constant `K_p` for the gas-phase thermal decomposition of tert-butyl chloride is 3.45.

A chemical reaction proceeds in both forward and backward directions. At some point in time, the rate of forward and backward reaction becomes equal.

At this stage, the system is said to be in a state of equilibrium. When the concentration of products and reactants no longer changes, the reaction is said to have reached equilibrium.

Constant is the term that is used for the ratio of the concentrations of products to the concentrations of reactants at equilibrium.

This ratio is also called the Equilibrium Constant `(K)`. It is only used for reversible reactions and its value changes with changes in temperature.

What is the formula of Equilibrium Constant `K_p`?Equilibrium Constant `K_p` is defined as the ratio of the partial pressures of products and reactants when the reaction reaches equilibrium.

Mathematically, it is given as:`K_p = (P_A)^a * (P_B)^b / (P_C)^c * (P_D)^d`where `A` and `B` are products and `C` and `D` are reactants. `a`, `b`, `c` and `d` are the respective coefficients in the balanced chemical equation. `P` is the partial pressure of the given substance.Given equation for the thermal decomposition of tert-butyl chloride:`(CH3)3CCl(g) ⇌ (CH3)2C=CH2(g) + HCl(g)`

The Equilibrium constant `K_p` of the given equation at 500K is given as:`K_p = 3.45`

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Answer:

Endothermic and Exothermic Reactions

Endothermic and Exothermic ReactionsIn this experiment you are investigating whether dissolving ammonium nitrate in water is an endothermic or exothermic reaction. An endothermic reaction absorbs energy from its surroundings (heat), so the reaction gets colder.

Explanation:

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Answer:

B. The forces holding atoms together are stronger in a liquid than in

a gas

I hope that this helps!

Answer:

n=c/v.

1.5=3×10^8/v

v=3×10^8/1.5

v=2×10^8 m/s

Hope this helps :)

The index of refraction for plastic, when speed of light in plastic is 1.5.

Refraction index of any substance will be calculated by using the below equation:

n = c/v, where

c = speed of light in vaccum = 3×10⁸ m/s

v = speed of light in plastic = 2×10⁸ m/sec

On putting values in the above equation, we get

n = 3×10⁸ / 2×10⁸ = 1.5

Hence the refractive index of plastic is 1.5.

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1) The reaction of a primary amide with LiAlH₄ would result in the reduction of the amide functional group to a primary amine.

2) The reaction of a primary amide with H₃O⁺ would result in the hydrolysis of the amide functional group to form a carboxylic acid and ammonia.

1) LiAlH₄ is a strong reducing agent commonly used for the reduction of carbonyl compounds. In the presence of LiAlH₄, the primary amide undergoes reduction, where the carbonyl group (-C=O) is transformed into a primary amine (-NH₂), resulting in the removal of the oxygen atom.

2) H₃O⁺ represents an acidic environment and can initiate the hydrolysis of amides. In the presence of H₃O⁺, the amide functional group undergoes hydrolysis through a reaction called acid hydrolysis. This process cleaves the amide bond, breaking it into a carboxylic acid and an amine. The amine formed in this case would be ammonia (NH₃).

Overall, the reaction of a primary amide with LiAlH₄ results in the reduction to a primary amine, while the reaction with H₃O⁺ leads to the hydrolysis of the amide, forming a carboxylic acid and ammonia.

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The property of water that allows it to dissolve many substances is its polarity.

What is polarity?

Polarity refers to the distribution of electrical charge in a molecule. A polar molecule has an uneven distribution of electrons, resulting in a partial positive charge on one end of the molecule and a partial negative charge on the other end. This creates a dipole moment in the molecule.

Water molecules are polar, meaning that the electrons in the molecule are not distributed evenly, resulting in a partial positive charge on one end of the molecule and a partial negative charge on the other end.

This polarity allows water molecules to form hydrogen bonds with other polar or charged molecules, such as ions and polar compounds. This type of bonding allows many substances, such as salt and sugar, to dissolve in water.

Additionally, the polarity of water molecules also allows them to interact with nonpolar substances through London Dispersion Forces, which also allows some nonpolar substances to be dissolved in water.

Hence, the polarity of water allows it to dissolve many substances.

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Answer:

Cells or atoms

Explanation:

Answer:

are made of one or more cells.

need energy to stay alive.

respond to stimuli in their environment.

grow and reproduce.

maintain a stable internal environment.

Explanation:

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