Aryan want to deposit silver on an iron spoon using silver nitrate as electrolyte. Which terminal of the battery he should connect the spoon? What material should the other electrode be made of?

Answers

Answer 1

Silver from the anode gets dissolved to reach the cathode, where the spoon will be plated.

What is electroplating?

Electroplating is a way of electrolysis, where a thin layer of metal is used to plate a determined object. It is a kinda process to purify a material you want.

The anode contains the metal you want to plate with, in this case, the Ag.

The anode contains the half-reaction of oxidation so:

Ag(s) → Ag ⁺ (aq)  +  e⁻

In the cathode, you have the spoon, which it takes place the half-reaction of reduction:

Ag ⁺ (aq)  +  e⁻  →  Ag(s)

The electrolytic cell, where the redox reaction takes place, must be filled with a AgNO₃ solution.

Silver from the anode gets dissolved to reach the cathode, where the spoon will be plated.

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Related Questions

Using a table of standard electrode potentials, label each of the following statements as completely
true or false.
A) Cu²+ can oxidize H2, and Fe can reduce Mn²+
B) Ni²+ can oxidize Cu²+, and Fe²+ can reduce H+
C) Fe²+ can oxidize H₂, and Fe²+ can reduce Au³+.
D) Br₂ can oxidize Ni, and H₂ can reduce Mn²+
E) H* can oxidize Fe, and Ni can reduce Br₂

Answers

Answer: B and E are True

Explanation:

Because Fe has a higher oxidation potential than H2, H+ can oxidize it.

[tex]$\begin{array}{llllll}\mathrm{Fe} & \rightarrow & \mathrm{Fe}^{2+} & +2 \mathrm{e}- & \mathrm{E}^{0}=0.44 \mathrm{~V} \\ \mathrm{H} & \rightarrow & \mathrm{H}^{+} & + & \mathrm{e}^{-} & \mathrm{E}^{0}=0 \mathrm{~V}\end{array}$[/tex]

Ni can reduce Br2 because the reduction potential of Ni is more than Br2.

[tex]\mathrm{Ni}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Ni}^{-} \quad \mathrm{E}^{0}=-0.25 \mathrm{~V}\\2 \mathrm{Br}^{-} \quad \rightarrow \mathrm{Br}_{2}+2 \mathrm{e}^{-} \quad \mathrm{E}^{0}=-1.087 \mathrm{~V}$[/tex]

What are other portals of entry besides needlesticks?

Answers

Answer:

Inhalation (via the respiratory tract)Absorption (via mucous membranes such as the eyes) Ingestion (via the gastrointestinal tract)

Explanation:

The opening where an infectious disease enters the host's body such as mucus membranes, open wounds, or tubes inserted in body cavities like urinary catheters or feeding tubes.

Pb + 02 - Pb304 help

Answers

Answer:

6PbO +O2 --> 2Pb3O4

Explanation:

The question is incomplete I assume it is

PbO + 02 - Pb304

What is the electron configuration of a sodium atom?
1s¹, 2s², 2p6, 356
1s¹, 2s2, 2p6, 3s¹
2s², 2s², 2p6, 3s¹
1s², 2s², 2p6, 3s¹

Answers

Answer:

1s²,2s²,2p6,3s¹.

Atomic no. of sodium is 11electronic configuration = 2,8,1.that Is 1s²,2s²,2p6,3s1.for electromic configuration - only 2 electron can be there in a single orbital there are 1 s orbital, 3 p orbital ...and so on.

➪ State the difference between molarity(M) and molality (m) ?
[tex]\sf{}[/tex]​
⛄​

Answers

Molarity is the ratio of the moles of a solute to the total liters of a solution. The solution includes both the solute and the solvent. Molality, on the other hand, is the ratio of the moles of a solute to the kilograms of a solvent.


The properties of an element depend on the electron structure within its atoms. The electrons are arranged in different
orbitals, at different energy levels and sublevels. Match each sublevel to the maximum number of electrons it can
accommodate?

Answers

The electrons are arranged in different orbitals, at different energy levels and sublevels.

What are Orbitals ?

An atomic orbital is a function describing the location and wave-like behavior of an electron in an atom.

This function can be used to calculate the probability of finding any electron of an atom in any specific region around the atom's nucleus.

Following are the sublevel with the maximum number of electrons that can be accommodated by it ;

2 Electrons : S-Subshell
6 Electrons : P-Subshell
10 Electrons : d-Subshell
14 Electrons : f-Subshell

Therefore, S-Subshell has 2 electrons, P-subshell has 3 electrons, d-subshell has 10 electrons and f-subshell has 14 electrons.

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Write and balance molecular equations for the following reactions between aqueous solutions. You will need to decide on the formulas and phases of the products in each of the cases.

An aqueous solution of barium hydroxide is mixed with an aqueous solution of sulfuric acid.

Answers

Answer:

Ba(OH)2(aq) + H2SO4(aq) ----> BaSO4(s) + 2H2O(l)

Design a controlled experiment to test your hypothesis. A controlled experiment is one that only tests one variable. All other variables must remain the same. Make a drawing below that shows how you will set up your experiment. Then, write a description of the one factor that will vary and the two factors that will remain the same.

Answers

The problem is not found here but a possible experiment might be to measure the amount of product from a chemical reaction.

What is an experiment?

An experiment is a procedure used to verify a working hypothesis obtained by applying the scientific method.

Experimental variables that can be tested include, for example, temperature, amount of product from a chemical reaction, etc.

In conclusion, the problem is not found here but a possible experiment might be to measure the amount of product from a chemical reaction.

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The temperature of a 0.85kg block of copper was found to be 21 degrees the copper was placed in the sun and temperature increased to 28 degrees.Assume the specific heat of copper to be 0.385J/g degrees and determine the amount of heat absorbed by the block of copper.

Answers

Answer:

2290 . 75   J  absorbed

Explanation:

The copper changed from 21 to 28 degrees= 7 degrees

.85 kg = 850 gm

850 gm * 7 degrees * .385 J / g-degree) = 2290.75 j

Type of chemical reaction of Ca(OH)2.

Answers

Answer:

Combination reaction

This reaction is a combination reaction because calcium oxide and water combine to create calcium hydroxide as the only result.

What is Ca(OH)2?

An inorganic substance called calcium hydroxide has several uses. It is also known as slaked lime, and limewater is the name of its aqueous solution.

Calcium hydroxide has the chemical formula Ca in both its composition and structure (OH)

2

and it has a 74.09 g/mol molar mass.

The calcium metal cation is linked to two hydroxide anions in this ionic molecule. Calcium hydroxide has a polymeric structure in its solid state, which is made possible by hydrogen bonds between the layers.

The mineral portlandite, a naturally occurring but seldom type of calcium hydroxide, is present in various volcanic and metamorphic rocks.

In order to make calcium hydroxide for use in industry, calcium oxide (lime or quicklime) is reacted with water.

CaO + H

2

O → Ca(OH)

2

On lesser scales, it may also be produced through the reaction of aqueous calcium chloride and sodium hydroxide.

Physical characteristics: It has a melting point of 580 °C and can be found as white powder or colorless crystals with a density of 2.21 g/cm3.

Chemical characteristics: Water may rather easily dissolve calcium hydroxide. It partly dissolves in water to create limewater, a moderately basic solution. Ca(OH)2 solution or limewater

salts when combined with acids, and it can corrode various metals, including aluminum. The process of carbonatation, which produces calcium carbonate from limewater and carbon dioxide, is advantageous:

Ca(OH)2+ CO2→ CaCO3+ H2O

Uses: Calcium hydroxide is used in a wide range of industrial processes, including the production of Kraft paper, water and sewage treatment, the production of ammonia, and pH adjustment. Additionally, it is a crucial component of mortars, cement, and plaster. It may be used in the food business for a variety of purposes, including pH correction, calcium fortification, digestion help, and baking soda replacement because it is a relatively non-toxic and gentle base.

Calcium hydroxide is not poisonous at low doses and poses no safety risks. However, inhaling, eating, or coming into touch with the aqueous calcium hydroxide solution at greater concentrations might result in lung damage, chemical burns, blindness, or serious skin irritation.

• How did your experimental absolute zero value compare to the accepted value?

Answers

The experimental absolute zero value is less when compared to the accepted value of absolute zero.

What is absolute zero?

Absolute zero is defined as the temperature in which the lowest energy possible is attained in a thermodynamic system.

Absolute zero temperature has an accepted values of 0 Kelvin or -273.15 degrees Celsius.

At absolute zero, it is assumed that the volume of an ideal gas becomes zero. However, it has not been possible to cool any gas to absolute zero.

Based on the graph of temperature against volume of gases, the experimental absolute zero extrapolated from the graph where volume of the gases becomes zero is -285 degrees Celsius.

Therefore, the experimental absolute zero value is less when compared to the accepted value.

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Answer:

The experimental absolute zero value is less when compared to the accepted value of absolute zero.What is absolute zero?Absolute zero is defined as the temperature in which the lowest energy possible is attained in a thermodynamic system.Absolute zero temperature has an accepted values of 0 Kelvin or -273.15 degrees Celsius.At absolute zero, it is assumed that the volume of an ideal gas becomes zero. However, it has not been possible to cool any gas to absolute zero.Based on the graph of temperature against volume of gases, the experimental absolute zero extrapolated from the graph where volume of the gases becomes zero is -285 degrees Celsius.Therefore, the experimental absolute zero value is less when compared to the accepted value.

Explanation:

In your own words, explain why a study published a cereal company that finds that breakfast is the most important meal of the day is likely to contain bias.

Answers

Because when your feeling down about waking up breakfast gives you energy and nutrients kind of wakes you up

What kind of reaction is symbolized by AB + CD → AD + CB?
O A. Decomposition
OB. Synthesis
O C. Double replacement
OD. Single replacement

Answers

C. Double replacement

cations and anions switch places

7. What produces more severe burns, boiling water or steam?​

Answers

Answer:

boiling water

Explanation:

boiling water produces more severe burns

Please help thanks in advance

Calculate the equilibrium constant K for the following reaction at 25°C from standard electrode potentials. Fe³(aq) + Cu(s) = Fe²(aq) + Cu²(aq)
The equation is not balanced. Use standard reduction electrode potentials.

Answers

The equilibrium constant K for the following reaction at 25°C from standard electrode potentials is Antilog (37.5).

What is chemical equilibrium?

Chemical equilibrium is the condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs.

Reduction Half-Reaction

[tex]Fe^{3+}[/tex](aq)+[tex]e^-[/tex] →[tex]Fe^{2+}[/tex](aq)

Standard reduction electrode potentials = +0.77

Oxidation Half-Reaction

Cu(s) = [tex]Cu^{+2}[/tex](aq) + 2[tex]e^-[/tex]

Standard reduction electrode potentials = -0.34

E° cell= E°cathode- E°anode

E° cell= +0.77+0.34

E° cell=1.11

E°cell= 0.0592÷n logK

From the redox reaction equations above, n=2

1.11 V= 0.0592÷2 logK

37.5 =  logK

K= Antilog (37.5)

Hence,  the equilibrium constant K for the following reaction at 25°C from standard electrode potentials is Antilog (37.5).

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What hazard symbol does cement have?

Answers

Answer:

The answer is in the picture.

Calculate the number of Pt atoms in the cube and find the radius in picometers of a Pt atom. Be sure your answer has the correct number of significant digits. Full questions are in pictures...Thank you!

Answers

V cube = 2.2³ = 10.648 cm³

V Pt atoms = 0.75(75%) x 10.648 = 7.986 cm³

Part 1

mass of a single Pt atom = 3.24 x 10⁻²² g

mass Pt atoms  = ρ x V = 21.45 g/cm³ x 7.986 cm³ = 171.3 g

the number of Pt atoms = 171.3 : 3.24 x 10⁻²² = 5.287 x 10²³

Part 2

4/3πr³=7.986 cm³

r = 1.24 cm = 1.24 x 10¹⁰ pm

describe how molecular motion and distance between molecules change as ice is heated to become a liquid and the gas

Answers

The conversion of heat to kinetic energy inside the water molecules causes the motion of the molecules to increase. The distance between molecules widens when the molecules move more quickly and clash more frequently. (As more heat is absorbed, the distance between molecules for solids, liquids, and gases widens)

How do models help scientists predict the polarity of molecules?

This is from the Molecular Structure Lab Report: Determining Polarity

Answers

In conclusion, modeling is very useful for predicting molecular polarity because chemical bonds among different atoms are generated to equal electrical charges.

What is molecular polarity?

Molecular polarity refers to the unequal distribution of electrical charges in the atoms of a molecule.

This unequal distribution leads to the generation of molecular poles (positive and negative) at the ends of the chemical bonds.

In conclusion, modeling is very useful for predicting molecular polarity because chemical bonds among different atoms are generated to equal electrical charges.

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In what way does ocean water move globally?
A. Along warm-water currents from warmer regions to colder regions
B. Along cold-water currents from the equator to the Poles
C. Along cold-water currents from warmer regions to colder regions
D. Along longshore currents from the equator to the Poles.

Answers

Answer:

A. Along warm-water currents from warmer regions to colder regions

\

Explanation:

A because I did it already

The average atomic mass of carbon is 12.01 amu. Based on the atomic
masses of the two isotopes of carbon, how do the relative abundances of the
isotopes compare?
Isotope
Atomic mass (amu)
C-12
12.000
C-13
13.003
OA. There is a slightly larger percentage of C-12 than C-13.
OB. There is a very large percentage of C-12.
OC. There is a very small percentage of C-12.
OD. They are about the same.

Answers

Answer: There is a very large percentage of C-12.

Explanation:

The atomic mass is must closer to that of C-12 than of C-13, meaning that there is a much larger percentage of C-12.

A corn plant has been genetically engineered. It produces pollen that can make its own toxins. These toxins protect the corn plant against pests. What is a likely impact on the environment around the corn plant?

Bird and butterfly populations around the area may increase.
The concentration of pesticides in a nearby lake would increase.
Newer strains of pesticide-resistant pests may develop.
The carbon dioxide level would increase in the area.

Answers

Answer:

I think the answer is "newer strains of pesticide - resistant pests may develop" as I learnt in Biology, but I'm not sure as I don't know anything about corn plants.

Explanation:

Answer:

newer strains of pesticide

Explanation:

How many moles of nitrogen gas would be produced if 4.92 moles of copper(II) oxide were reacted with excess ammonia in the following chemical reaction? 2 NH₃(g) + 3 CuO (s) → 3 Cu(s) + N₂(g) + 3 H₂O(g)\

Answers

Answer:

4.92/3

Explanation:

ok????????????

Please show steps Thanks

Answers

Answer:

chuma ya ndoshi.............

Explanation:

.

kwenda ukalale .............

How many grams of fluorine are needed to generate 7.65 moles Carbon Tetrafluoride

Answers

Answer:

36.3375 g

Explanation:

How many grams of copper

Answers

The mas of copper is 217.3 grams.

How many grams of glucose (C6H12O6) are contained in 555 mL of a 1.77 M glucose solution?

Answers

176.980176 g of glucose ([tex]C_6H_{12}O_6[/tex]) are contained in 555 mL of a 1.77 M glucose solution.

What are moles?

A mole is defined as 6.02214076 × [tex]10^{23}[/tex] of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

[tex]Molality = \frac{Moles \;solute}{Volume \;of \;solution \;in \;litre}[/tex]

[tex]1.77 M = \frac{Moles \;solute}{0.555 L}[/tex]

mole solute = 0.98235 g/mol

[tex]Moles = \frac{mass}{molar \;mass}[/tex]

[tex]0.98235 g/mol = \frac{mass}{180.16 g/mol}[/tex]

mass = 176.980176 g

Hence, 176.980176 g of glucose ([tex]C_6H_{12}O_6[/tex]) are contained in 555 mL of a 1.77 M glucose solution.

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Help please!

A new element with atomic number 116 was discovered in 2000. In 2012 it was named livermorium, Lv. Although Lv is radioactive and short-lived, its chemical properties and reactivity should follow periodic trends.

a. Determine the electron configuration for the valence electrons of Lv in the ground state. (2 pts)

b. It has been suggested that Lv can form a 4+ ion. Identify what would be the electron configuration for the valence electrons for the Lv4+ ion? (1 point)

Answers

The electronic configuration of Lv element is [tex]5f^{14} 6d^{10} 7s^2 7p^4[/tex].

The electronic configuration of [tex]Lv^{+4}[/tex] is [tex]5f^{14} 6d^{10} 7s^2[/tex] .

What is electronic configuration?

Electronic configuration, also called electronic structure, is the arrangement of electrons in energy levels around an atomic nucleus.

And also the possible union with hydrogen can give two possible compounds:

[tex]LvH_2 \;or LvH_4[/tex]

This is because the Livermorio compound can have two different oxidation states with the values 2 and 4. When reacting with the hydrogen that its charge is +1, these would be the two possible equations of a client to the different oxidation states with the ones that might react Lv.

It is a synthetic chemical compound and its number in the periodic table is 116.

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#1

Atomic no=116

Lies ahead of Renedium -86

Electronic configuration

[Rn]5f¹⁴6d¹⁰7s²7p⁴

#2

Lv^4+ means 4 electrons donated

So it gets removed from p orbital

[Rn]5f¹⁴6d¹⁰7s²

what kind of investigations allow for the control of variables?

Answers

The experimental investigations allow for the control of variables.

What is control of variables?

The control of variables is the experimental element that remains constant and unchanged throughout the experiment of the investigation.

The control of variables is held constant during the experiment to test the relation between the dependent and independent variables.

Thus, An experimental investigation allows the control of variables all the time.

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The velocity is ___ when the distance is kept the same and the time is halved

Answers

Answer:

Velocity = distance / time

if distance is same and time is 1/2

Velocity = distance / time/2

velocity = 2 (distance /time)

Velocity,= 2 * velocity

Velocity will be doubled

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Guys i just cant do this my brain doesnt work right now Do you agree that the family remains to be the basic unit of society? Why or why not? What does it mean for a family to be a basic unit of society? Do you think there is a need for Responsible Parenthood in the global society we are living right now? Why or why not? Can Responsible Parenthood bring forth responsible and productive global citizens? If it can, in what ways can responsible parenthood bring about such global citizens? If it cannot, then why do you think it can't? Do you think bringing about responsible and productive global citizens is connected to responding to the 17 SDGs that the United Nations has set? How do you think is being responsible and productive citizens connected to the 17 SDGs? Choose one event from each topic below. To make your choices, think about which event you think is most important in each group.Topic Event Choiceschoose one from each row.---------------------------Latin American Independence ---------------------------Haitian RevolutionSpanish American Wars of IndependenceDominican Republic IndependenceCuban Independence---------------------------New Philosophies ---------------------------Industrialization in BritainWriting of Adam SmithWriting of Karl MarxWriting of Thomas MalthusWriting of John Stuart MillWriting and New Harmony of Robert Owens---------------------------Imperialism---------------------------Monroe DoctrineSepoy MutinyKorean colonizationBoer WarCrimean WarOpium WarsBoxer Rebellion---------------------------Italian and German Unification ---------------------------Founding of Young ItalyIl Risorgimento newspaperGiuseppe Garibaldi appointed generalSeven Weeks WarFranco-Prussian WarZollverein---------------------------Recent Movements ---------------------------Independence movement of one of the followingAlgeria, Belize, Kenya, LibyaMeiji RestorationNegritude MovementProgressive MovementSocial reform of one of the followingAbolition, Education, Health, Unions, Temperance, Women's SuffrageWrite a summary paragraph for each of the five chosen events. 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