Using standard reduction potentials from the aleks data tab, calculate the standard reaction free energy for the following redox reaction.
The standard Gibbs free energy for the given redox reaction is -106 kJ/mol.
Let's consider the following redox reaction.
10 Cl⁻(aq) + 2 MnO₄⁻(aq) + 16 H⁺(aq) ⇒ 5 Cl₂(g) + 2 Mn²⁺(aq) + 8 H₂O(l)
We can identify both half-reactions with their respective standard reduction potentials (E°red).
Cathode: 2 MnO₄⁻ + 16 H⁺ + 10 e⁻ ⇒ 2 Mn²⁺ + 8 H₂O E°red = 1.51 V
Anode: 10 Cl⁻ ⇒ 5 Cl₂ + 10 e⁻ E°red = 1.40 V
With this information, we will calculate the standard cell potential (E°cell).
What is the standard cell potential?
The standard cell potential is the potential difference between the cathode and anode.
E°cell = Ered,cathode - E°red,anode = 1.51 V - 1.40 V = 0.11 V
What is the standard Gibbs free energy?
The standard Gibbs free energy (ΔG°) is a thermodynamic potential that can be used to calculate the maximum reversible work that may be performed by a thermodynamic system under standard conditions.
It can be calculated using the following expression
ΔG° = - n × F × E°cell
ΔG° = - 10 mol × (96,485 J/V.mol) × 0.11 V × (1 kJ/1000 J) = -106 kJ/mol
where,
n are the moles of electrons exchanged.
F is Faraday's constant.
The standard Gibbs free energy for the given redox reaction is -106 kJ/mol.
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(c) 10g of HBr reacted with 5g of Al. Calculate the: (i) mass of Aluminium bromide produced. (ii) number of bromide ions formed. (iii) percentage yield if 0.55 g of aluminum bromide is actually yielded. [Al-27, Br-80, H=1, L-6.022×10²3]
6HBr+2Al → 2AlBr3+3H2
now, as the reaction is showing
6 moles of HBr reactes with 2 moles of Aluminium gives us 2 moles of Aluminium bromide and 3 moles of hydrogen gas
as the question says 10g of HBr reacted with 5g of Al.
(i) mass of Aluminium bromide produced.
moles = given mass/molecular mass
moles = 5g/54g
moles 0.0925 mole
(ii) number of bromide ions formed
6 moles of bromide ions formed in this reaction
now 1 moles = 6.022×10^23
6 moles = 6 ×6.022×10^23
= 36.132×10^23ions
(iii) percentage yield if 0.55 g of aluminum bromide is actually yielded
percentage yield= moles×100
percentage yield= 0.55×100÷107
percentage yield=0.514%
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The entire atlantic ocean has a ________ thermal energy and a __________ temperature than a cup of boiling water.
The entire atlantic ocean has a greater thermal energy and a lower temperature than a cup of boiling water.
The water in the Atlantic Ocean is warmer and has higher thermal energy. The volume of the entire atlantic Ocean is substantially larger than that of a cup of coffee. Due to its substantially larger volume, the water in the entire atlantic Ocean will now undoubtedly have a higher thermal energy content than a single cup of hot coffee. However, a cup of hot coffee has a lower temperature than the atlantic Ocean.
The temperature is higher in a single place because the thermal energy in the coffee is concentrated in a tiny volume. But because the atlantic Ocean's enormous thermal energy is dispersed across such a vast volume.However, the enormous amount of thermal energy in the atlantic Ocean is dispersed throughout a very vast volume, which is why the temperature of the water there is relatively lower in one location.
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Nicole is looking for the best deal on a king-size mattress that has a wholesale price of . help her compare the price of the mattress in different situations by completing the following. (a) nicole can buy the mattress from a distributor that does direct-to-customer sales. when selling directly to individual customers, this distributor marks up the wholesale price . ignoring tax, how much would nicole pay for the mattress if she gets it from this distributor? (b) nicole can also go to a specialty store that she knows has the mattress. this specialty store gets it from a distributor who marks up the wholesale price . then the specialty store marks it up by an additional . ignoring tax, how much would nicole pay for the mattress at this specialty store? (c) select the true statement. nicole would pay more for the mattress if she gets it directly from the distributor. nicole would pay more for the mattress if she gets it at the specialty store. nicole would pay the same amount if she gets the mattress from the distributor or at the specialty store.
Nicole can access global markets through distributors while avoiding logistical problems and several trade-related concerns. Specialty shops tend to be more expensive and have less choice. at last, Nicole will pay more for the mattress if she gets it at the specialty store.
The simplicity of employing a distributor is its key benefit. Typically, the distributor is in charge of the packaging, shipping, and associated paperwork for customs. The concentrate on a specific class of products that a specialty store has is one of its main advantages. This offers business owners and staff the ability to gain knowledge and a reputation for selection and competence within the store's designated specialization.
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If gas molecules in an enclosed chamber are allowed to enter a second chamber, the resulting redistribution of gas molecules represents an increase in?
If gas molecules in an enclosed chamber are allowed to enter a second chamber, the resulting redistribution of gas molecules represents an increase in entropy.
Entropy is defined as the measure of a system's thermal energy or te amount of energy which is unavailable to do work.
The entropy is known to increase because of the pressure or concentration is reduced. Entropy of gases are much larger than the condensed phases.
Entropy is the measure of the randomness or disorder of the system.
When the gas molecules were in an enclosed chamber, they were at a constant temperature and molecules did not slow down but when they were allowed to enter a second chamber, they had more place in container where they were in disorder, which resulted in redistribution of gas molecules, increasing the entropy of gas due to its expansion.
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The number 3.00183 rounded to four significant figures is
A. 3.001
B. 3.183
C. 3.002
D. none of these
E. 3.000
Answer: 3.002 ==> C
Explanation:
3.00183 =
3.00183 =3.002 => since 8 is closer to 10 than to 0, add 1 to the 1 in 3.00183
3.002 ==> C
one possible drawback to moist-heat cookery is that may leach out and be lost in the liquid.
One possible drawback to moist-heat cookery is that a.color b.flavor c.vitamins d.minerals may leach out and be lost in the liquid.
What is moist-heat?The cost of generating more neutron-rich nuclear systems is measured by the nuclear symmetry energy. According to the system's density. The mechanics of supernova explosions, the characteristics of neutron stars, and the gravitational waves produced by their mergers are all greatly affected by knowledge of the density dependence of nuclear symmetry energy. Understanding the kinetics and outcomes of their collisions in laboratory studies, as well as the characteristics of nuclei, is crucial.
Within the parabolic approximation, the Equation of State (EOS) of homogeneous neutron-rich nucleonic matter with isospin asymmetry = (np)/ and density can be stated in terms of the energy per nucleon E(n, n).
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After the carbon dioxide reaction, why is 6 m hcl added to the beaker containing the reaction product?
To convert the benzoate salt into benzoic acid. Chemically mixing sodium hydroxide with benzoic acid produces sodium benzoate.
The sodium version of benzoic acid is sodium benzoate, often known as benzoate of soda. It is an aromatic molecule with the molecular weight of 144.11 and the chemical formula C7H5NaO2.
Exactly how is benzoic acid made?
In an industrial setting, toluene can be partially oxidized with oxygen gas to produce benzoic acid. It should be noted that this method typically uses cobalt or manganese naphthenate as a catalyst. Benz amide and benzonitrile can also be hydrolyzed to create this chemical. Baking soda, soda ash, or lye are used to combine benzoic acid with to create sodium benzoate. Because of this reaction, it becomes soluble in water (benzoic acid is not soluble in water on its own). In the United States, the first chemical preservative allowed in foods was benzoic acid or its sodium salt, benzoate. Today, it is still frequently used for a variety of cuisines.
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Given that the charge on an electron is 1.60×10−19 C , determine the conversion factor between electrinos and coulombs.
The conversion factor from electrino to coulombs is 1.60×10−19.
What is charge?The term charge refers to a particle that is positively or negatively charged. The electron is a particle that is negatively charged. One of the popular units that could be used when dealing with electrons is the electrinos.
We know that;
1 electrino = 1.60×10−19 C
It then follows that the conversion factor from electrino to coulombs is 1.60×10−19.
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How much heat is required to bring 1.0 KG of water from 25°C to 99°C
What is the concentration in molarity when 10.00 grams of k3po4 is dissolved in h2o to give 350 ml?
The concentration in molarity is 0.135 mol/L.
In terms of the amount of material per unit volume of solution, molar concentration is a measurement of the concentration of a chemical species, specifically a solute in a solution.
10 grams of K₃ PO₄ is dissolved in H₂O. to give 350 ml of solution.
The molar mass of K₃ PO₄ is 212.3 g/mol
The molarity is given as:
[tex]Molarity = \frac{moles{~}of{~}solute}{liters{~}of{~}solution}[/tex]
Now,
Moles of K₃ PO₄ = 10 grams K₃ PO₄ × 1 mol K₃ PO₄ / 212.3 = 0.047 mol K₃ PO₄
Liters of solution = 350 ml × 1 L / 1000 ml = 0.35 L
Now,
[tex]Molarity = \frac{moles{~}of{~}solute}{liters{~}of{~}solution}[/tex]
Molarity = 0.047 / 0.35
Molarity = 0.13458 mol/L
Molarity = 0.135 mol / L
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How many kinds of chemically non-equivalent hydrogens are there in each of the following compounds? a the number of chemically non-equivalent hydrogens is. B the number of chemically non-equivalent hydrogens is.
Answer:
he number of chemically non-equivalent hydrogens is 6.
Would extrinsic or intrinsic properties be more useful in identifying a substance? Why?
According to the research, Intrinsic properties are specific properties being more useful than extrinsic properties since they allow substances to be identified and differentiated.
What are the intrinsic properties?They are essential qualities of a material and that characterize each of the substances, being independent of the size of a sample or the amount of matter present, contrary to the extrinsic properties that are affected by external factors.
In this sense, said properties are inherent qualities of the type and form of matter, which depend mainly on the chemical composition and structure.
Therefore, we can conclude that according to the research, the correct option is intrinsic properties are specific properties being more useful than extrinsic properties since they allow substances to be identified and differentiated.
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A block of aluminum occupies a volume of 15.0 mL and has a mass of 40 g. What is its density?
*
Cut off the decimal at the hundredth place. Don't forget your units!
Acetone is a common solvent that has a density of 0.7899 g/mlwhat volume of acetone, in milliliters, has a mass of 49.2 g?
The volume of acetone in milliliters is 0.016 mL.
What are the acetone's physicochemical characteristics?Properties of acetone, also known as 2-propanone, dimethyl ketone, and pyroacetic acid, in terms of chemistry, physics, and temperature. Included is a phase diagram. Acetone (2-propanone), also known as CH 3-CO-CH 3, is a colorless, clear liquid with a distinctively fruity and sweet scent. The fumes are heavier than air and it is combustible.
Given that;
density = 0.7899 g/mL
mass = 49.2g
Volume =?
applying formula
[tex]Density = \frac{mass}{ volume}[/tex]
[tex]Mass=\frac{ density}{volume}[/tex]
= [tex]\frac{ 0.7899 g/mL}{49.2 g}[/tex]
=0.016 mL
The volume of acetone in milliliters is 0.016 mL
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A supercritical fluid can expand like a ________ to fill a container and has a density similar to that of a ________ so can behave as a solvent.
The correct alternatives of the blanks are -
Blank 1 - Gases.
Blank 2 - Liquid.
We have a statement regarding the supercritical fluid.
We have to fill in the blanks with correct alternatives.
What is Supercritical fluid ?A supercritical fluid is any substance at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist.
According to the question -
The complete statement regarding the supercritical fluid is as follows -
A supercritical fluid can expand like a gases to fill a container and has a density similar to that of a liquid so can behave as a solvent.
Hence, the correct alternatives of the blanks are -
Blank 1 - Gases.
Blank 2 - Liquid.
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Which of these pairs of elements have the same number of valence electrons? whoever gives an actual answer gets Brainliest!!
energy from motion and position.
from flocabulary
Energy gets from motion is called kinetic energy and energy due to position is called potential energy.
The energy that a body or particle gains as a result of its motion is known as kinetic energy.The effort necessary to accelerate an item to a random speed is known as kinetic energy.To comprehend fluid mechanics, liquid particles may be modelled using the kinetic energy equation that was developed for a body. Understanding the movement and heating of liquids in chemical industries requires knowledge of kinetic energy. Due to kinetic energy, the particles in a heated liquid move in a chaotic manner. Brownian motion refers to the random movement of particles in a liquid. According to Albert Einstein, the kinetic energy of the molecules' Brownian motion is exactly proportional to the temperature of a liquid. Temperature affects a substance's kinetic energy as well. whenever the substance's temperatureTo know more about kinetic energy visit : https://brainly.com/question/15764612
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What are the predicted products from the following decomposition reaction? cu 2co 3( s)
Cu2O and CO2 from the decomposition of cu 2co 3 (s).
The question discuss more about:
What is decomposition reaction?
When one reactant splits into two or more products, this is known as a decomposition reaction. This can be modelled by the all-inclusive formula AB = A + B. • The breakdown of water into hydrogen and oxygen and the breakdown of hydrogen peroxide are two examples of decomposition reactions.
Therefore,
What are the predicted products from the following decomposition reaction?
Cu2O and CO2 from the decomposition of cu 2co 3 (s).
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An acid can react with a metal hydroxide to form a salt and water. Name the salt formed when sodium hydroxide reacts with ethanoic acid. *GIVING STARS AND STUFF FOR ANSWERING QUICK!!*
Answer: sodium ethanoate
Explanation: I hope this is correct
Calculate the frequency of a wave with a wavelength is 6.0 x 10-7 m.
Taking into account the definition of wavelength, frecuency and propagation speed, the frequency of the wave is 4.9967×10¹⁴ m.
Definition of wavelengthWavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).
Definition of frequencyFrequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).
Propagation speedThe propagation speed is the speed with which the wave propagates in the medium.
The propagation speed relate the wavelength (λ) and the frequency (f) inversely proportional using the following expression:
v = f×λ
All electromagnetic waves propagate in a vacuum at a constant speed of 2,998×10⁸ m/s, the speed of light.
Frequency of the wave in this caseIn this case, you know:
v= 2,998×10⁸ m/sf= ?λ= 6×10⁻⁷ mReplacing in the definition of propagation speed:
2,998×10⁸ m/s= f× 6×10⁻⁷ m
Solving:
f= 2,998×10⁸ m/s ÷ 6×10⁻⁷ m
f= 4.9967×10¹⁴ m
In summary, the frequency of the wave is 4.9967×10¹⁴ m.
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1) What two states of matter are pictured in the image below?
Answer:
C
Explanation:
Ice is water in its solid form
the ice melted a bit into water
water is a liquid
The states of matter which are pictured in the image below are solid and liquid.
What is matter?
Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.
Atoms are further made up of sub atomic particles which are the sub atomic particles protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.
The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.Matter is always conserved according to law of conservation of matter and is never created nor destroyed and is always conserved.
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i need the answers pleaseee! this is acids and bases for chemistry
Match the following vocabulary words.
1. the wrapping outside of the cell that encloses the other parts of the cell
cytoplasm
2. rod-shaped parts of a reproducing cell that carry the genes
nucleus
3. the chemical material within the cell--does not include the nucleus
cell membrane
4. the information located in the cell that determines inherited traits
chromosome
5. the part of a cell that controls cell activities
genes
If 3.046 g of precipitate was formed, what was the molarity of the ba(no3 )2 (aq)?
The molarity of the Ba(NO₃)₂ solution is 0.188 M
Calculating :Determination of the molarity of Ba(NO₃)₂
We'll begin by calculating the amount of mole of in 3.046 g of precipitate, Ba₂SO₄
Molar mass of Ba₂SO₄ = (2×137) + 32 + (4×16) = 370 g/mol
Mass of Ba₂SO₄ = 3.046 g
Mole of Ba₂SO₄ =?
Mole = mass /molar mass
Mole of Ba₂SO₄ = 3.046 / 370
Mole of Ba₂SO₄ = 0.008 mole
Next, we shall determine the amount of mole of Ba(NO₃)₂ required to produce 0.008 mole of Ba₂SO₄
Na₂SO₄(aq) + Ba(NO₃)₂(aq) —> Ba₂SO₄(s) + 2NaNO₃(aq)
From the balanced equation above,
1 mole of Ba(NO₃)₂ reacted to supply 1 mole Ba₂SO₄.
Therefore,
0.008 mole of Ba(NO₃)₂ also will react to produce 0.008 mole of Ba₂SO₄
Thus, 0.008 mole of Ba(NO₃)₂ is required for the reaction.
Finally, we shall determine the molarity of the Ba(NO₃)₂ solution
Mole of Ba(NO₃)₂ = 0.008 mole
Volume = 42.53 mL
= 42.53 / 1000
= 0.04253 L
Molarity of Ba(NO₃)₂ =?
Molarity = mole / Volume
Molarity of Ba(NO₃)₂ = 0.008 / 0.04253
Molarity of Ba(NO₃)₂ = 0.188 M
Molarity :Molarity (M) is that the amount of a substance in a certain volume of solution. Molarity is defined because the moles of a solute per liters of a solution. Molarity is additionally known as the molar concentration of a solution
What is molarity used for?Molarity is how chemists measure the concentration of an answer , allowing them to relate concentrations to at least one another when calculating chemical reactions and working with chemical solutions. a degree is what chemists use to refer to the amount of substance dissolved into a given amount of solution
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what is the molarity of 125 g cobalt chloride dissolved in a final volume of 300 ml? the fw is 237.9 g/mol.
The formula weight is 237.9 g/mols the molarity of 125 g cobalt chloride dissolved in a final volume of 300 ml.
What is molarity ?The word "molar concentration" refers to the amount of a substance per unit volume of solution and is used to describe the concentration of a chemical species, specifically a solute, in a solution. Molarity, amount, and substance concentration are other names for this term. The number of moles per liter, denoted by the unit symbol mol/L or mol/dm3 in SI units, is the molarity unit that is most frequently used in chemistry. The term "molar," often known as "1 M," refers to a solution with a concentration of 1 mol/L.
As a result of thermal expansion, the volume of most solutions varies slightly with temperature in thermodynamics, making it difficult to employ molar concentration. The typical solution to this issue is to use a temperature-independent metric or to introduce temperature correction variables.
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consider a tank containing a solution in which na0 moles of a substance are dissolved. a solution of the same chemical flows into the tank at a linearly increasing volumetric rate, q0t, and a mixture flows out of the tank at an equivalent rate. the change in the moles of the substance in the tank, na, is described by:
The change in the moles of the substance in the tank, Na = 10 if it contains solution in which na0 moles of a substance are dissolved.
DescriptionThe chemical compound sodium oxide has the formula Na2O. Glasses and ceramics both use it. Although the compound is rarely found, it is a white solid.
What does sodium oxide mean?An alkali metal oxide with the chemical formula Na2O is sodium oxide. It is sodium hydroxide in its anhydride state.
In the air, sodium burns with a brilliant, white light.
CalculationdNa / dt = Ca/o Qo*t - qot / v Na
⇒ dNa/dt + qo t / v Na = Ca/o Qo t → 1
The integrating factor is e ∫ (Qo t) /v dt
= e (Qo t^2) / 2v
Multiplying 1 by IF we get,
e^(qo t^2/2v) [dNa/dt + Qo t/2v Na] = (Ca/o)*Qo*t*e^(Qo t^2 / 2v)
d/dt (Na e^(Qot^2/2v) = (Ca/o)*Qo*t*e^(Qo t^2 / 2v)
On integrating,
Na* e^(Qot^2/2v) = Ca/o Qo ∫t e^(Qo t^2 / 2v) dt
= v (Ca/o) ∫[Qo*t /v] e^(Qo t^2 / 2v) dt
= v (Ca/o) e^(Qo t^2 / 2v) + k
Na = v(Ca/o) + K e^(Qo t^2 / 2v)
At t = 0,
Na = Nao
⇒Nao = V*Ca/o +k
⇒k = Nao - V Ca/o
At Ca/o = 5, V = 2, Qo = 1, V=2, Nao = 10
we get
Na = 10
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how to identify amphiprotic compounds, if i give you the chemical structure or name of the compound/molecule.
Amphiprotic compounds are able to both donate and accept a proton.
Amphiprotic compounds contain a hydrogen atom and lone pair of valence electron.
For example, HSO₃⁻ (hydrogen sulfate ion) is an amphiprotic compound.
Balanced chemical equation for reaction when HSO₃⁻ donate protons to water:
HSO₃⁻(aq) + H₂O(l) ⇄ SO₄²⁻(aq) + H₃O⁺(aq).
Ka = [SO₄²⁻] · [H₃O⁺] / [HSO₃⁻]
Balanced chemical equation for reaction when HSO₃⁻ accepts protons from water:
HSO₃⁻(aq) + H₂O(l) ⇄ H₂SO₄(aq) + OH⁻(aq).
Kb = [H₂SO₄] · [OH⁻] / [HSO₃⁻]
Water (H₂O), amino acids, hydrogen carbonate ions (HCO₃⁻) are examples of amphiprotic species.
Another example, water is an amphiprotic substance:
H₂O + HCl → H₃O⁺ + Cl⁻
H₂O + NH₃ → NH₄⁺ + OH⁻
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What is the end result of a dichotomous key?
Answer:
A dichotomous key provides users with a series of statements with two choices that will eventually lead to the correct identification of the organism
Explanation:
this should help
How much energy does a 14-hp motor deliver in 36 minutes? assume that 1 horsepower = 746 w.
22559040 J energy is produced by a 14-hp motor deliver in 36 minutes
What is power and horsepower?
Power is defined as rate of work done which means it is work done in 1 second of time
One horsepower (1 hp) is the unit of power based on the work that a horse can do in one second
Given,
1 horsepower = 746 w
P = 14 hp = 746*`14=10444 W
W = Pt = 10444 × 36 × 60 J = 22559040 J
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what is yeast? what kind of organism is it?
Answer:
fungi
Yeasts are eukaryotic organisms that are included in a group of organisms called “fungi,” which also includes molds and mushrooms. Yeasts can have both positive and negative effects on fermented products consumed by humans and animals.
Explanation:
Answer: Fungi
Explanation:
Yeasts are eukaryotic organisms that are included in a group of organisms called “fungi,” which also includes molds and mushrooms. Yeasts can have both positive and negative effects on fermented products consumed by humans and animals.