etermine eo for the following reaction, using the given standard reduction potentials: cu2 (aq) mn(s) → cu(s) mn2 (aq) eo for mn2 (aq) = -1.18 v eo for cu2 (aq) = 0.34 v
Answers
The Standard Reduction Potential for the given reaction is 1.52 V.
How to determine the standard reduction potential of a reaction?Standard reduction potential, often denoted as E°, is a measure of the tendency of a chemical species to undergo reduction (gain electrons) under standard conditions. The given reaction is
\(Cu^{2+}\) + Mn → Cu + \(Mn^{2+}\)
Thus to measure it we can follow the following steps:
1. Identify the reduction and oxidation half-reactions:
Reduction: Cu²⁺(aq) + 2e⁻ → Cu(s), Eº (reduction) = 0.34 V
Oxidation: Mn(s) → Mn²⁺(aq) + 2e⁻, Eº (oxidation) = -1.18 V
2. Reverse the oxidation half-reaction to obtain the reduction potential:
Mn²⁺(aq) + 2e⁻ → Mn(s), Eº (reduction) = 1.18 V
3. Add the reduction potentials together to find the overall Eº:
Eº(cell) = Eº(reduction) + Eº(oxidation)
Eº(cell) = 0.34 V + 1.18 V
4. Calculate the final value:
Eº(cell) = 1.52 V
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Related Questions
Gene d is the best gene to use as a molecular clock to estimate the divergence at the point labeled 2, where there is approximately 20 amino acid changes between any two taxa after the split.
Answers
Gene d is an excellent choice for a molecular clock to estimate divergence at point 2 because it exhibits a consistent rate of amino acid changes between taxa, which is a crucial factor for accurate time estimation in molecular evolution studies.
Gene d is an ideal candidate for use as a molecular clock in estimating divergence at point 2 due to its consistent rate of amino acid changes between taxa after the split. Molecular clocks are tools that utilize the rate of genetic mutations to estimate the evolutionary timeframes of divergence between species. By counting the number of amino acid changes between taxa, we can infer the time that has passed since their last common ancestor.
In this scenario, there are approximately 20 amino acid changes between any two taxa following the split at point 2. Assuming a constant rate of molecular evolution, the consistent number of changes implies that the rate of mutation in gene d is relatively stable. This makes gene d a reliable indicator for calculating divergence times.
Using gene d as a molecular clock allows researchers to compare the genetic sequences of the taxa and calculate the time that has elapsed since their divergence at point 2. By comparing these sequences, the molecular clock approach provides insights into the evolutionary history of the taxa and helps to construct accurate phylogenetic trees.
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what is the oceanic and continental crust made out of ?
Answers
Answer:
Oceanic crust is generally composed of dark-colored rocks called basalt and gabbro. It is thinner and denser than continental crust, which is made of light-colored rocks called andesite and granite. The low density of continental crust causes it to “float” high atop the viscous mantle, forming dry land.
Explanation:
An apple, potato, and onion all taste the same if you eat them with your nose plugged
Answers
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Hey, love!
You only get that little quote if your streak gets higher so, congrats on that!
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What does it mean
"1. A chemical reaction. represents what happens in a chemical"
Answers
An acid and base will combine to form a new substance with new properties in a??
Answers
Salt.
Acids and bases, when brought together, form salt and water through a process known as neutralization process. Since NaCl, the salt, is of majority use in the body, the answer to this question is salt.
A compound is 2.00% H by mass, 32.7% S by mass, and 853% O by mass. What is its empirical
formula?
The final step is to use the mole ratios of the elements to write the empirical formula
The mole ratios of the elements are:
mole ratio of H:S:0 = 2:14
The mole ratios show the ratios of the elements in the compound. Use these ratios to identify the
subscripts on each element in the empirical formula Remember that the subscript 1 is not shown
What is the correct empirical formula for this compound?
HSO
H₂SO4
H2SO4
Answers
Answer:
H2SO4
Explanation:
In 100 g of the compound we hgave
2.00 g H, 32.7 g S and 65.3 g O.
2g* 1 mol/g = 2.0 mol H
32.7 g S * 1 mol/32.1 g = 1.02 mol S
65.3 g 0 * 1 mol/16 g = 4.08 mol O
2.0 mol H : 1.02 mol S : 4.08 mol O = 2 mol H : 1 mol S : 4 mol O
H2SO4
Answer:
H2SO4
Explanation:
Plz Plz Plz help!!!!!
Which list of elements contains a metal, a metalloid, and a nonmetal?
1) Ag, Si, I2
2) Ge, As, Ne
3) K, Cu Br2
4) S, Ci2, Ar
Answers
Which reaction would not occur as written due to the Activity Series of Metals (found in your Chemistry Reference Table)?
A. 3 Mg + 2 AlCl3 --> 3 MgCl2 + 2 Al
B. Al + NaCl --> AlCl3 + Na
C. Ca + CuCl2 --> CaCl2 + Cu
D. 2 K + 2 H2O --> 2 KOH + H2
Answers
The reaction Al + NaCl → AlCl₃ + Na among the given reactions will not occur according to the reactivity series. Therefore, option B is correct.
What is reactivity series?The reactivity series of metals can be described as the arrangement of metals in the decreasing order of their reactivities.
The metals at the top of the activity series are strong reducing agents as they can easily oxidize. These metals easily corrode. The reducing ability gets weaker moving down the series.
The electropositive elements reduce as move down the activity series of metals. All metals above hydrogen in the reactivity series emit hydrogen gas upon reacting with dilute HCl.
Aluminum metal lies down to the sodium metal so it can not displace sodium metal therefore, this reaction is not possible.
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strontium isotope analysis of the bones of the individual called ""the amesbury archer"" shows that________ group of answer choices
Answers
Despite being buried at Stonehenge, the "Amesbury Archer" was most likely born in what is now Germany or Switzerland, according to strontium isotope analyses of his bones.
One of the most important details concerning the Archer, according to Wessex Archaeology, is that he was a native of the Alps. He most likely originated in what is now Switzerland. The peculiar Beaker pottery and artefacts that started to show up in Britain about the time of the Archer were known to archaeologists for a long time as being from Europe, providing evidence of trade and cultural ties.
The Archer, however, was more than only a dealer. He arrived with the essential metalworking abilities. The first metals were introduced to Britain at this time. He would have been among the first individuals in Britain to be able to work gold, which undoubtedly would have elevated him to a position of great status. Hence, his grave's wealth.
Hence, strontium isotope analysis report satisfactory result.
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which term names an environmental cost of fossil fuel consumption
Answers
Clouds form from liquid water and ice True Or False ? IF U ANSWER QUICK I WILL GIVE U A BRAINLIEST
Answers
Answer:
False
Explanation:
from gas such as vaporization
⬆️= you need to come up with investigation question, to help inform your decision.
Think about how land, water, and air absorb and release
Thermal energy and then formulate your hypothesis
I need some Investigation questions about how land, water, and air absorb and release
Thermal energy :,)
Subject: science
Answers
Answer:
1. how dense is the land and what matreal
2. what is the humidity and is there any wind
3.how pure is the water if it full of minarils
Explanation:
Read the article and answer the 6 questions in it.
Answers
Answer:
Yea.....where is the article and the 6 questions?
Answer:
Answering
Explanation:
do u want us to tell u what we got?
Science is the process of observing and making sense of the natural world.
True or False
Answers
Answer:
True. It is all about understanding of the natural and social world following a systematic methodology based on evidence.
Freshwater is pumped into a pond that is experiencing eutrophication. Which effect is this action likely to have? (1 poinO The concentration of nutrients decreases, which improves the water quality in the pond.O The concentration of nutrients decreases, which causes aquatic plants and animals to die.The concentration of nutrients increases, which causes a toxic bloom of blue-green algae.TH
Answers
Answer
A) The concentration of nutrients decreases, which improves the water quality in the pond.
Explanation
Dilution is a way to decrease pollution, in this case, freshwater will contain a low amount of nutrients, dissolving those present in the pond and reducing the overall concentration. Fewer nutrients derive in less eutrophication and hence better water quality.
Nate measured an iron bar. He put the iron bar in the hot sun. When he measured the bar after it had been in the sun, it was slightly longer. Which sentence best describes what happened to the iron atoms after the bar was left in the hot sun?
Consider what happens to an iron bar when left out and exposed to sunlight and why it happens.
Evaluate the statements and select the one that best represents what happens.
Provide your reasoning in the text box provided.
The number of atoms increased.
The size of the atoms increased.
The space between each atom increased.
The air in the spaces between the iron atoms expanded.
Answers
Answer:
need dim points back ma boi
Explanation:
I don’t know what the answer are. Can some one please help.
Answers
The atomic radius, Pauling ionic radius, and first ionization energy of Bromine (Br), Chlorine (Cl), Magnesium (Mg), and Sodium (Na) are given in the attachment.
What is the atomic radius of an atom?A chemical element's atomic radius, which is typically the average or normal distance between the nucleus's center and the outermost isolated electron, serves as a gauge for the size of its atom.
Only by measuring the separation between the centers of two adjacent atoms and halving that distance can one determine the radius of an atom.
The ionic radius is the size of an ion.
The first ionization energy is the energy required to remove the first electron from an atom
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The two following body systems work closely together: the __________ brings oxygen into the body and disposes of carbon dioxide and the ___________ circulates oxygen throughout the body and keeps blood fresh.
Answers
2.) circulatory system
in which section(s)/point(s) is the car accelerating?
Answers
Answer:
b-c and d-e
Explanation:
At these points/sections, uneven distances are covered in equal intervals of time.
Therefore, velocity is not constant => it is accelerating
Which arrow would most likely represent the phase change that occurs when silver is poured into a mold and cools to become a solid bar?
Answers
Answer:
5
Explanation:
took test edge 2020
D. 5
got it correct on test <3
Which of the following does half-life measure? Question 2 options: gamma emission beta emission alpha emission radioactive decay rate
Answers
Answer:
b because the detective ate coffee all day
An isotope (X5) of this element has been synthesized in the lab. This isotope has a half-life of
27.7 days.
How long will it take for 600 g of the substance to decay to 75 g?
Answers
The time taken for the isotope of the sample element having a half life of 27.7 days to decay from its 600 g sample to 75 g is 36.09 days.
What is radioactive decay?Radioactive decay is a nuclear reaction by which an unstable nuclei will undergo emission of charged particles such as alpha, beta, gamma.
By this process unstable nuclei will form their stable isotope or other new atoms. The decay constant k for the nuclear reaction is calculated from the half life time as below:
decay constant = 0.693 /27.7 days
= 0.025 days-1
Now the time taken for the decay of 600 g of the sample to 75 g is calculate as follows:
t = 1/(0.025) log (600/75)
= 36.09 days
Hence, time taken for the isotope of the sample element having a half life of 27.7 days to decay from its 600 g sample to 75 g is 36.09 days.
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the two main fuels that supply energy for physical activity are
Answers
The two main fuels that supply energy for physical activity are carbohydrates and fats. During physical activity, the body requires energy to fuel muscle contractions and maintain various bodily functions.
Carbohydrates and fats are the primary sources of this energy. Carbohydrates are stored in the body as glycogen, primarily in the muscles and liver.
During exercise, glycogen is broken down into glucose and utilized as a source of energy. Glucose is readily available and can be quickly metabolized to provide energy for high-intensity activities.
Fats are stored in the body as adipose tissue. During prolonged or lower-intensity activities, the body relies more on fat metabolism for energy.
Fats are broken down into fatty acids, which are then converted into a form of energy called ATP (adenosine triphosphate) through a process called beta-oxidation.
The relative contribution of carbohydrates and fats as fuel sources during physical activity can vary depending on the intensity, duration, and individual factors such as fitness level and diet.
For example, high-intensity activities like sprinting or weightlifting rely more on carbohydrates, while low-intensity activities like walking or jogging utilize a higher proportion of fat as a fuel source.
It's worth noting that proteins can also provide energy during prolonged physical activity, but they are typically not the primary or preferred fuel source. Proteins are primarily involved in muscle repair and maintenance rather than being a direct energy source.
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There is an equal number of protons and __________ in a neutral atom.
A. electrons
B. neutrons
C. protons
D. elements.
Answers
the answer is electrons
How is the molar mass of an element different from the atomic mass of an element?
Answers
2.Molar mass is measured in grams per mole while atomic mass is “unitless.”
3.Atomic mass is measured via mass spectrometry while molar mass is computed via atomic weight.
The sum two numbers: 152.50 and 2.462
Reported to the correct number of significant figures is
Answers
Answer:
5 and 4
Explanation:
All numeral digits are important for sig figs and any zeros inbetween. Any zeros after are seen as important in decimals but not before.
If a 3 L balloon at 2 atm was compressed to 1 L. What is
the new pressure of the balloon?
Answers
Answer:
6atm
Explanation:
Using Boyle's law equation as follows;
P1V1 = P2V2
Where;
P1 = initial pressure (atm)
P2 = final pressure (atm)
V1 = initial volume (L)
V2 = final volume (L)
Based on the information provided in this question;
P1 = 2 atm
P2 = ?
V1 = 3L
V2 = 1L
Using P1V1 = P2V2
2 × 3 = P2× 1
6 = P2
P2 = 6atm
The new pressure of the balloon is 6 atm.
compare the result is the grease spot rest for potato chips, white
candle wax, vegetable oil ans rubbing alcohol
Answers
When you compare the results of the grease spot test for potato chips, white candle wax, vegetable oil and rubbing alcohol, you will find that all of these substances can be used to remove grease stains from clothes. However, there are some differences in their effectiveness and ease of use.
Potato chips are often used as a quick fix for small grease stains on clothing. You simply place a chip on the stain and press down firmly. The grease from the chip absorbs the grease from the stain, leaving the fabric clean. However, this method is not always effective and may leave a residue on the fabric.
White candle wax can be used to remove grease stains from clothes by melting the wax onto the stain and then peeling it off once it has hardened. This method is effective, but can be time-consuming and messy.
Vegetable oil can be applied to grease stains and left to sit for a few minutes before washing. It is effective at removing the stain, but can be difficult to remove from the fabric.
Rubbing alcohol is a common household cleaner that can be used to remove grease stains. It can be applied directly to the stain and rubbed with a clean cloth. It is effective and easy to use. However, it should be used with caution on delicate fabrics as it can cause damage.
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a solution is made by dissolving 15.3 g of sodium chloride, nacl, in enough water to make exactly 500 ml of solution. what is the concentration (molarity) of nacl in mol/l?
Answers
The concentration of the NaCl is mol/L is 2.62 M, this term of concentration is termed as molarity.
Molarity of a solution is defined as number of moles of solute dissolved per liter of solution. Number of moles is the ratio of given mass of the solute to its molar mass. The concentration can be identified by using various entities such as molarity, molality, part per million and many others.
Molarity ( M) = # of moles of solute / volume of solution (L)
Volume of Solution = 100 mL or 0.1 L
moles of NaCl = mass of NaCl / molar mass of NaCl
moles of NaCl = 15.3g /58.44 gmol−1 = 0.262 mol
Molarity ( M) = # of moles of solute / volume of solution (L)
Molarity=0.262mole/0.1lit=2.62 moles/liter
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The reaction 2NoBr(g) ---> 2NO(g)+Br2(g) is a second order reaction with a rate constant of 0.80M^-1 s^-1 at 11 C. If the initial concentration of NOBr is 0.0440 M, the concentration of NOBr after 12 seconds is _________.
Answers
Answer:
noe sory opwqkfj
s
Explanation: