What species is reduced in the reaction below?
Zn° + 2 Ag+ → Zn2+ + 2 Agº?
A) Znº
B) Agº
C) Zn2+
D) Ag+
Answers
Answer: The correct option is D) \(Ag^+\)
Explanation:
The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction. It occurs when oxidation number of a species increases.
A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction. It occurs when oxidation number of a species decreases.
For the given chemical reaction:
\(Zn^0+2Ag^+\rightarrow Zn^{2+}+2Ag^0\)
On the reactant side:
Oxidation number of Zn = 0
Oxidation number of Ag = +1
On the product side:
Oxidation number of Zn = +2
Oxidation number of Ag = 0
As the oxidation number of Ag is decreasing from +1 to 0. Thus, \(Ag^+\) is getting reduced.
Hence, the correct option is D) \(Ag^+\)
Related Questions
1. Convert the following temperatures to K.
a) 104 C
b) -3 C
Answers
Answer:
a) 377 k
b) 270 k
Explanation:
a) 104 + 273 = 377 k
b) -3 + 273 = 270 k
the base protonation constant of 1-h-imidazole () is . calculate the ph of a solution of 1-h-imidazole at . round your answer to decimal place.
Answers
To calculate the pH of a solution of 1-H-imidazole (C3H4N2) at a given concentration, we need to consider the protonation equilibrium of the imidazole molecule. The protonation constant (Ka) of 1-H-imidazole is given as 1.0 × 10^-7.
The protonation equilibrium can be represented as follows:
C3H4N2 + H2O ⇌ C3H4N2H+ + OH-
At equilibrium, the concentrations of the species can be related using the equilibrium constant expression:
Ka = [C3H4N2H+][OH-] / [C3H4N2]
Since we are given the value of Ka and want to find the pH, we can assume that [OH-] is negligible compared to [H+] and simplify the equilibrium expression:
Ka ≈ [C3H4N2H+][H+] / [C3H4N2]
Since the concentration of [OH-] is negligible, [H+] is approximately equal to [C3H4N2H+].
Now, we can rearrange the equation and solve for [H+]:
Ka = [H+]^2 / [C3H4N2]
[H+]^2 = Ka × [C3H4N2]
[H+] = sqrt(Ka × [C3H4N2])
Substituting the given values:
[H+] = sqrt(1.0 × 10^-7 × [C3H4N2])
At a pH of 7, the concentration of [H+] is 1.0 × 10^-7 M. Therefore, we can set up the following equation:
1.0 × 10^-7 = sqrt(1.0 × 10^-7 × [C3H4N2])
1.0 × 10^-7 = 1.0 × 10^-7 × sqrt([C3H4N2])
Solving for [C3H4N2]:sqrt([C3H4N2]) = 1
[C3H4N2] = 1
Therefore, the concentration of 1-H-imidazole is 1.0 M.The pH of a 1-H-imidazole solution with a concentration of 1.0 M at 25°C is approximately 7.0 (neutral pH).
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All atoms in a piece of pure copper have
A. the same atomic number and the same number of electrons
B. the same atomic number, but a different number of electrons
C. different atomic numbers, but the same number of electrons
D. different atomic numbers and a different number of electrons
Answers
All atoms in a piece of pure copper have the same atomic number and the same number of electrons which is option A.
Atoms in copper explained.
Copper is an element that consists of only one type of atom, which is the copper atom. The copper atom has 29 protons in its nucleus, which gives it an atomic number of 29. This means that in a neutral copper atom, there are also 29 electrons that surround the nucleus in electron shells.
In a piece of pure copper, all of the atoms are identical and have the same number of protons, neutrons, and electrons. This is because the copper atoms are all of the same isotope, meaning they have the same number of neutrons as well as protons. Isotopes are atoms of the same element that have different numbers of neutrons, but in the case of copper, there is only one stable isotope, which means all copper atoms have the same number of neutrons.
Pure copper is composed of only one type of atom, which is copper. Copper has a well-defined atomic number (29) that specifies the number of protons present in the nucleus of each copper atom. Since atoms are electrically neutral, the number of electrons present in the copper atoms is also equal to the atomic number, 29.
Therefore, all atoms in a piece of pure copper have the same atomic number and the same number of electrons.
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Choose all the answers that apply.
Argon (Ar) is in group 18. Argon ____.
1. is part of the noble gas group
2. has 18 electron shells
3. does not react readily with other elements
4. has properties similar to other elements in group 18
5. forms a salt when combined with a metal
Answers
Answer:
answer is 2 I think I'm correct sorry if I'm not
If a student puts a dialysis tube with 15% salt in it, into a beaker that has only 5% salt, what would happen to the movement of water?
Answers
Answer:
- Water from beaker will move to the tube
Explanation:
Total percentage of water in the beaker;
\( = { \tt{100\% - 5\%}} \\ = { \tt{95\%}}\)
Total percentage of water in dialysis tube;
\({ \tt{ = 100\% - 15\%}} \\ = { \tt{85\%}}\)
So, there is much water concentration in the beaker than the dialysis tubing, this causes a determined percentage of water to diffuse to the tubing, and determined percentage of salt to move from tubing to the beaker.
Percentage of water moving to tubing;
\({ \tt{ = 95\% - 85\%}} \\ = { \tt{10\%}}\)
Percentage of salt moving from tubing to beaker
\({ \tt{ = 15\% - 5\%}} \\ { \tt{ = 10\%}}\)
Use this information for Chicks Division to answer the question that follow. Chicks Division had $1,100,000 in invested assets, sales of $1,210,000, income from operations of $302,500, and a minimum acceptable return of 15%. The investment turnover for Chicks Division is a.1.3 b.1.0 c.1.1 d.1.5
Answers
The investment turnover for Chicks Division is 1.1. Therefore, the correct option is C.
The investment turnover is calculated by dividing sales by invested assets. It is given that sales = $1,210,000 and invested assets = $1,100,000
Therefore, for Chicks Division, the investment turnover would be:
Investment turnover = Sales/ Invested assets
Investment turnover = 1,210,000 / $1,100,000
Investment turnover = 1.1
Since the minimum acceptable return for Chicks Division is 15%, we can compare the investment turnover to this rate. If the investment turnover is lower than 15%, it means that the division is not generating enough sales from its invested assets to meet the minimum acceptable return.
In this case, the investment turnover for Chicks Division is 1.1, which is lower than the minimum acceptable return of 15%. Therefore, the division needs to improve its investment turnover in order to meet the minimum acceptable return.
The correct answer is option C: 1.1
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PLEASE HELP!!! which of these atoms are isotopes??
Answers
Explanation: same element (same amount of protons) but different amount of neutrons (doesn’t affect what element it is).
Find the odd one out and give a reason for your answer. knife, mirror, steel plate, spoon, stone.
Answers
Answer:
All are reflective except for stone
i guess it is stone
Explanation:
Hope it helps!!!
\(\large\underline{\underline{\maltese{\orange{\pmb{\sf{\: Reasoning :-}}}}}}\)
Mirror is the odd one because it is the only thing used on a dressing table.All the other items like knife, steel plate, spoon, stone are used in kitchen for performing different activities like slicing, serving, tasting, breaking etc..Only mirror has no use in kitchen. Hence, it is the odd one!!~eter explores the periodic table and how atoms can combine to form compounds. He uses beads with different sizes and colors as models. Each different type of bead represents atoms from a different element.
How can Peter best use the beads to show how compounds form in nature?
Answers
Answer is B- He can arrange the beads into various formations using different colors and sizes multiple times
Explanation: I hope the helped!
Peter can arrange the beads into various formations using different colors and sizes multiple times.
What is Periodic Table ?The periodic table, also known as the periodic table of the elements, is a tabular display of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry.
In order to show how compounds form in nature, the beads will be assigned to the different elements on the periodic table according to the following arrangements;
The beads representing the elements of each group in the periodic table will all have the same colorThe sizes of the beads within each group will increase from the top to the bottom of the groupWith the above arrangements, it will be possible to show the affinity and proportion of the elements in the compound formed in nature.
Therefore, Peter can arrange the beads into various formations using different colors and sizes multiple times.
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3. Write a configuration for the following: 0
a. 2, 1, 0, -12
b. 4, 2, 0, -12
c. 5, 3, 2, -12
Answers
The electronic configuration can be used to know the details of atom.
What is electronic configuration?
The question is incomplete so I will educate you generally about electronic configuration.
The electronic configuration of an atom refers to the arrangement of electrons in its energy levels or orbitals.
The electrons in an atom occupy specific energy levels, with the innermost energy level having the lowest energy and being occupied by the most electrons. Each energy level can contain a certain number of electrons, and electrons occupy the lowest energy level available to them.
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Is a covalent bond formed between a metal and a non-metal?
Answers
No, Covalent bond cant not be formed between a metal and non-metal. ionic bonds between metals and nonmetals.
A covalent bond is formed when two atoms exchange one or more pairs of electrons. The two atomic nuclei are concurrently drawing these electrons to them. When the difference between the electronegativities of two atoms is too tiny for an electron transfer to take place to create ions, a covalent bond is formed. Bonding electrons are collectively referred to as the electrons that are present between the two nuclei. The "glue" that holds the atoms in molecular units together is the bound pair. By taking into account whether each element is a metal or nonmetal, it is possible to forecast the kind of bond that will develop between two elements. Covalent bonds between nonmetals, ionic bonds between metals and nonmetals, and metallic bonds between metals are the three types of bonds that typically form. Covalent bonds, which produce an irreversible binding and a high surface coverage, are mostly generated between side-chain-exposed functional groups of proteins and properly modified transducer surfaces. Covalent immobilisation is one of the most often utilised techniques, and it involves randomly coupling the antibody's free amino groups to a sensor surface.
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the diagram shows a model of the nitrogen cycle. which role do plants play in the nitrogen cycle?
Answers
Answer
D
Explanation:
They take up usable forms of nitrogen found in soil
Answer:
d
Explanation:
i took the test
(subject is astronomy)
Part B When writing a science paper, you need several different sources of information. These sources can be books or websites. Remember to use the most credible sources. Some websites present things as evidence that may not have a scientific base. You must be able to identify reliable sites so the data in your presentation is credible. Sources that end in .edu (school and college websites) and .gov (government websites such as NASA.gov) are the most trustworthy. However, sometimes students, not scientists, write content for .edu websites. Because the content may not have been checked by scientists, read any .edu website carefully to determine whether it is reliable. Some .org and .com sites, such as Smithsonian.com, are also credible, but you have to read the content carefully to determine how legitimate it is. When you review a source, ask yourself these questions about the website’s author, content, and sources: Who authored the article? Is the author a scientific expert in stars and galaxies? What is the purpose of the article? Does the article state facts that can be proven by evidence, or is it made up of opinions? When was the article written? Do other credible sources support the statements in this article? Which scientific studies support the information in the article? Find two to three credible websites that you can use to find information for your paper. Write them down. They can be e-books, magazines, websites, and so on. Also, write down one to two sentences for each source explaining how the source will help you. Show how you will cite your sources at the end of your presentation using MLA (Modern Language Association) citation methods.
Answers
In the liberal arts and humanities, MLA (Modern Language Association) style is most frequently used to compose papers and cite sources.
Thus, Brief parenthetical citations in the text that are keyed to an alphabetical list of the works cited at the end of the work are a feature of the MLA style.
With the publication of the most recent edition, the MLA citation style has undergone substantial alterations.
Building trust in the knowledge and ideas we share with one another may be more crucial than ever, and for almost a century, this has been the guiding principle of MLA style, a set of writing and documentation.
Thus, In the liberal arts and humanities, MLA (Modern Language Association) style is most frequently used to compose papers and cite sources.
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pressure and number of moles remained constant during this experiment. if you wanted to test one of these variables in a future experiment, how would you use your knowledge of gas laws to set up the investigation?
Answers
If you wanted to test either pressure or number of moles in a future gas law experiment, you would need to keep all other variables constant and manipulate only the variable you are testing.
For example, to test the effect of pressure, you could vary the pressure of the gas while keeping the number of moles and volume constant. Then, you could measure the resulting changes in temperature or volume. To test the effect of number of moles, you could vary the amount of gas while keeping the pressure and volume constant and measure the resulting changes in temperature or pressure. To set up an investigation to test one of these variables, you can use the Ideal Gas Law: PV=nRT, where P is pressure, V is volume, n is number of moles, R is the gas constant, and T is temperature. If you want to test the effect of pressure, you can keep the number of moles, volume, and temperature constant, and change the pressure. Observe the changes in volume or temperature as pressure is altered.
On the other hand, if you want to test the effect of the number of moles, you can keep the pressure, volume, and temperature constant, and change the number of moles. Observe the changes in volume or temperature as the number of moles is varied. This will help you understand the relationship between the variables and their impact on gas behavior, guided by the gas laws.
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80 foot-pounds of work is needed to move the sofa in Tyler's apartment. Which of the following statements is true?
Answers
What is the molarity of a solution in which 55.49 g of calcium chloride is dissolved in enough water to make 500. ml of solution?
Answers
The molarity of a solution in which 55.49 g of calcium chloride is dissolved in enough water to make 500. ml of solution will be 1M.
The quantity of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The term "molarity" can also refer to a solution's molar concentration.
Calculation of molarity is shown as:
Given data:
Mass of \(CaCl_{2}\) =55.49g
Molar mass of \(CaCl_{2}\) =40+35+35=110g
Moles = mass / molar mass
Moles = 55.43 / 110
Moles = 0.50 mol
Molarity can be calculated by using the formula:
Molarity = moles of solute / solution
Molarity = 0.5 × 1000 / 500
Molarity = 1 M
Therefore, the molarity of the calcium chloride solution will be 1 M.
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18) Based on the following equation, how many moles of hydrochloric acid are needed
to react with 0.64 moles of potassium permanganate?
2KMnO4 + 8HCI→ 3Cl₂ + 2MnO₂ + 4H₂O + 2KCI
Answers
2.56 moles of HCl are required to react with 0.64 moles of KMnO4.
The balanced chemical equation is given as;2KMnO4 + 8HCl → 3Cl2 + 2MnO2 + 4H2O + 2KCl.This equation is balanced in such a way that 2 moles of KMnO4 reacts with 8 moles of HCl to produce 3 moles of Cl2, 2 moles of MnO2, 4 moles of H2O and 2 moles of KCl.We are given the number of moles of KMnO4 as 0.64 moles.Now, we can use stoichiometry to find the number of moles of HCl required to react with 0.64 moles of KMnO4.The balanced chemical equation shows that 8 moles of HCl reacts with 2 moles of KMnO4.
So, one mole of KMnO4 would react with 8/2 = 4 moles of HCl.Now, the number of moles of HCl required to react with 0.64 moles of KMnO4 would be;Moles of HCl = Moles of KMnO4 x (Moles of HCl / Moles of KMnO4) Moles of HCl = 0.64 x 4 = 2.56 moles of HCl.
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Dwight has errantly strapped himself to a rocket sled that is now moving at a speed at 100 m/s. If the sled has a total mass of 450 kg and it comes to a stop in 1. 5 seconds, what is the force experienced by the sled and Dwight?
Answers
The force experienced by Dwight and the rocket sled is approximately -30,000 N.
The force can be calculated using the formula :
F = ma
where F is the force,
m is the mass
and a is the acceleration.
Acceleration can be calculated using the formula :
a = v/t
a = (final speed - initial speed) / time
a = (0 m/s - 100 m/s) / 1.5 s
a = (-100 m/s) / 1.5 s
a = -66.67 m/s² (negative sign indicates deceleration)
Calculate the force:
F = ma
F = (450 kg) × (-66.67 m/s²)
F = -30,000 N (approximately)
Thus, the force experienced is -30,000 N. The negative sign indicates the force acts in the opposite direction of the initial motion, as it brings the sled and Dwight to a stop.
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Question 1 of 10
Which two terms apply to oceanic crust rather than continental crust?
A. Thicker
O B. Lighter in color
0 C. Denser
I D. Younger in age
Answers
The two terms apply to oceanic crust rather than continental crust C. Denser and D. Younger in age
What is the oceanic crust made up of?
Oceanic Crust Oceanic crust, extending 5-10 kilometers (3-6 kilometers) beneath the ocean floor, is mostly composed of different types of basalts. Geologists often refer to the rocks of the oceanic crust as “sima.” Sima stands for silicate and magnesium, the most abundant minerals in oceanic crust.
What is an example of oceanic crust?Oceanic crust is thin (6 km thick) and dense (about 3.3 g/cm), consisting of basalt, gabbro, and peridotite. They include oceanic sediments (e.g. radiolarites, turbidites) and oceanic crust (e.g. basalt, pillow lava).
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Why do you need a correct lewis structure before you can use vsepr to predict a molecules geometry.
Answers
Answer:
so the answer that you get isn't wrong? i dont know
what type of rook is this
Answers
Answer:
Looks like limestone to me
Explanation:
I don't know, there isn't much to go on
Answer:
probably sedimentary rock and metamorphic rock.
Explanation:
Most fold mountains are composed primarily of sedimentary rock and metamorphic rock formed under high pressure and relatively low temperatures. Many fold mountains are also formed where an underlying layer of ductile minerals, such as salt, is present. Fold mountains are the most common type of mountain in the world.
in a 0.005 m aqueous solution of ascorbic acid, which of the following species is present in the lowest concentration? A. H3O+(aq)
B. H2C6H6O6(aq)
C. HC6H6O6 -(aq)
D. C6H6O62- (aq)
Answers
The species present in the lowest concentration in a 0.005 m aqueous solution of ascorbic acid is H3O+(aq).
Ascorbic acid, also known as vitamin C, has the chemical formula C6H8O6. When it is dissolved in water, it dissociates into its component ions. The balanced chemical equation for this dissociation is:
C6H8O6 (aq) + H2O (l) ⇌ H3O+ (aq) + HC6H6O6- (aq)
This equation shows that ascorbic acid produces equal amounts of H3O+ and HC6H6O6- ions when it dissociates. Therefore, in a 0.005 m aqueous solution of ascorbic acid, the concentrations of H3O+ and HC6H6O6- ions are equal.
The concentration of C6H6O62- (aq) is not relevant to this question because it is not a component ion of ascorbic acid. C6H6O62- (aq) is the oxalate ion, which can be found in other compounds but not in ascorbic acid.
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True or False: The amount of water has and will always remain about the same?
Answers
Answer:
In the world? I would say no, but at the same time there are a lot of variables to consider in this. But I'd say no. Just my opinion.
Explanation
Answer:
False the amount of water on earth has decreased over the years
Explanation:
HELP PLZZZZ GIVE BRAINLIST PLEZZ HELP!!!!!!!!!!!
I'll give 20 points
Suppose you make your living fishing for lobster. You and everyone else are free to set out as many traps as you like. As more and more traps are set up, however, fewer and fewer lobsters are caught. Soon, lobster catches are too small to support your families. A meeting is coming up where you and your fellow lobster fishers will present possible solutions to this problem. What will you propose to combat this tragedy of the commons and restore the fishery?
Answers
Explanation and Answer:
This is an opinion based question and there could be many different responses these are just examples of solution to restore the fishery:
-limiting the season during which lobsters can be caught this allows the population to reproduce itself gradually but maintaining it in control
-limiting the amount of lobster that can be caught therefore again letting the population increase
Which of these has the lowest first-ionization energy?
A) Cs
B) Ag
C) Pb
D) Br
E) Se
Answers
Answer:
Francium is the answer
How many grams are 1.20 x 1025 molecules of calcium iodide?
Answers
Answer:
1230
Explanation:
1.20×1025=1230 is your answer
offer insight on potential sources, impacts, and solution measures pertaining to nitrate and phosphate pollution in water bodies. please do some online or library research to answer this question
Answers
Nitrate and phosphate pollution in water bodies has an overall deleterious effect on water bodies.
Nitrate and phosphate pollutionNitrates and phosphates are inorganic compounds. Many detergents are composed of phosphates which commonly serves as a cleaning agent. Also, farmlands are important sources of nitrate and phosphates
Nitrates and phosphates in water bodiesUntreated sewage and surface runoff often find their way into water bodies. When this happens, the nitrates and phosphates present from these sources cause rapid growth of algae. This is called eutrophication.
Rapid death of these algae increases the organic load of water and largely decreases the oxygen content of water leading to the appearance of a dead lake.
Hence nitrate and phosphate pollution in water bodies has an overall deleterious effect on water bodies.
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The major difference between a 1s orbital and a 2s orbital is that
The 2s orbital has a slightly different shape.
The 2s orbital is at a higher energy level.
The 2s orbital can hold more electrons.
The 1s orbital can have only one electron.
Answers
Answer:
The 2s orbital is at a higher energy level.
Explanation:
1s and 2s are the sub-orbitals that are located in an atom. They are nearest to the nucleus and are found on the s sub-orbital. The difference between 1s and 2s is the difference in their level of energy. 1s has low energy as compared to 2s. 1s orbital has the lowest energy because it is located closed to the nucleus. 2s orbital has higher energy than 1s because it's orbit is larger than 1s.
MAJOR AMOUNT OF POINTS
What is the chemical formula of wood?
Answers
Answer:
C₆H₁₀O₅
Explanation:
In chemistry, we denote any molecule with carbons, hydrogens, and other elements combined together as organic compounds. This is where get get "Organic Chemistry" from.
Wood is going to be an organic compound.
Answer:
C₆H₁₀O₅
Explanation:
Project: Water Cycle Click the links to open the resources below. These resources will help you complete the assignment. Once you have created your file(s) and are ready to upload your assignment, click the Add Files button below and select each file from your desktop or network folder. Upload each file separately.
Your work will not be submitted to your teacher until you click Submit.
Answers
The poster and type written paper of water cycle use correct sentence structure, punctuation, grammar, and spelling.
Get the folder link and copy it by creating a new folder and putting all the documents in it. You can then go to the classroom select the link paste the folder link and submit. This is because online Classroom only allows you to upload videos that you own via a link or Drive.
There are two workarounds you can use. Have the original creator upload the video to the platform and share the platform link in your online Classroom assignment. Students can view the document edit the shared document, or edit individual copies of the document to work on the assignment. You can attach documents links, images videos, and add-ons to your work.
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