what are the six steps for the half reaction method of balancing aqueous redox equations in acidic solution
Answers
The oxidation half reaction and the reduction half reaction.Balance the atoms of each half reaction,. Balance the oxygen atoms by adding water (H2O) molecules, Balance the hydrogen atoms by adding hydrogen ions (H+),Balance the charge by adding electrons (e-) to the appropriate side of each half reaction.
Step 1: Separate the redox reaction into two half-reactions
Identify the oxidation and reduction half-reactions and write them separately.
Step 2: Balance the atoms in each half-reaction
Balance all atoms except for hydrogen and oxygen. For polyatomic ions, treat them as single entities.
Step 3: Balance the oxygen atoms using water molecules
Add H2O molecules to the side lacking oxygen atoms in order to balance the number of oxygen atoms in both half-reactions.
Step 4: Balance the hydrogen atoms using H+ ions
Add H+ ions to the side lacking hydrogen atoms to balance the number of hydrogen atoms in each half-reaction.
Step 5: Balance the charges in each half-reaction
Add electrons (e-) to the appropriate side of each half-reaction to ensure that the charges are balanced.
Step 6: Combine the balanced half-reactions
Multiply the half-reactions, if necessary, so that the number of electrons is the same in both. Then, add the half-reactions together, canceling out common species to obtain the balanced redox equation in acidic solution.
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Related Questions
What question did this young man have about his father? und
Answers
Which of the following describe the properties of most nonmetals? Select all that apply.
Poor conductors of electricity
Malleable
Ductile
Non-lustrous
Answers
The options that best describe the properties of most nonmetals are poor conductors of heat and electricity and non-lustrous in nature. Thus, the correct options for this question are A and D.
What are the properties of Non-metals?The properties of non-metal are as follows:
The non-metals are either solid or gases except for bromine which is liquid. Non-metals are poor conductors of heat and electricity.They are non-lustrous in nature. Non-metals can not be beaten into thin sheets. These elements do not have the ability to be drawn into thin wires.Malleability and ductility are the characteristic properties of metals. So, options B and C are eliminated. Now, the rest two options demonstrate the properties of non-metals. Non-metals also have numerous exceptions in their physical as well as chemical properties.
Therefore, poor conductors of electricity and non-lustrous are the options that best describe the properties of most nonmetals. Thus, the correct options for this question are A and D.
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In the equation C H4 + O2 C O2 + H2 O, what are the reactants?
O2--> C O2
C O2 + H2 O
C H4 + H2 O
C H4 + O2
Answers
Answer:
Explanation:
Which of the following Ką values represents the weakest acid?OA. K₂ = 1.82 x 10-1OB. K₂= 3.24 × 10-7OC. K₂ = 1.29 × 10-4Ka=OD. K₂ = 1.62 × 10-12
Answers
Answer:
OD. Ka = 1.62 × 10-12
Explanation:
An acid is weak the smaller the Ka value, so the weakest acid in this case is the one with a Ka=1.62 × 10-12.
what is the white solid that forms when methyl salicylate is added to the aqueous solution of sodium hydroxide?
Answers
The white solid that forms when methyl salicylate is added to an aqueous solution of sodium hydroxide is sodium salicylate.
Sodium salicylate is a sodium salt of salicylic acid. It is a white solid that has a bitter taste and is highly soluble in water. Sodium salicylate is frequently utilized as a pain reliever and anti-inflammatory medication, as well as a fever reducer in humans. It has similar properties to aspirin, a closely related compound.Sodium salicylate is made by reacting salicylic acid with sodium hydroxide in aqueous solution. When a hydroxide ion from sodium hydroxide is added to a carboxylic acid, it reacts to form a salt with an anionic form. Salicylic acid is a carboxylic acid that reacts with sodium hydroxide to form sodium salicylate.
The reaction is shown below:
This is the balanced chemical equation for the reaction between salicylic acid and sodium hydroxide
Methyl salicylate + NaOH → Sodium salicylate + Water
Thus, the white solid that forms when methyl salicylate is added to an aqueous solution of sodium hydroxide is sodium salicylate.
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Write a balanced nuclear equation for the beta decay of Hg-202.
Answers
Answer:
²⁰²Hg₈₀ ----> ²⁰²Tl₈₁ + ⁰₋₁e
Explanation:
The radioactive decay of the atom of an element by the emission of a beta-particle is equivalent to the splitting of a neutron in the nucleus of the radioactive element into an electron and a proton. The proton is retained by the nucleus whereas the electron is emitted as a beta-particle. This retention of the proton results in an increase of the atomic number by 1. A beta-particle is an electron. The electron is a very light particle and its loss makes no significant change in the mass number of the atom involved.
The beta decay of Hg-202 results in an increase of the atomic number from 8-0 to 81. Hence, Hg-202 is transformed to Tl-202. the balanced nuclear equation is given below:
²⁰²Hg₈₀ ----> ²⁰²Tl₈₁ + ⁰₋₁e
In a complete sentence, write down a method you could use to determine if an equation is written in the correct way and balanced
Answers
Option (C) is correct. One should count the atoms of each element on both sides of the chemical equation to make sure they are equal and decide whether the equation is balanced and appropriately constructed.
How should a chemical equation be written? What is it used for?The number of moles of a substance created or consumed during the chemical reaction is indicated by the coefficients next to the entity symbols.
How will you determine whether your answer to the rational equation is accurate?Verify each answer to verify sure the result does not result in the original equation's denominator being equal to zero. a denominator in the original equation can be made zero if a solution can be discovered.
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Question:
What is a method you could use to determine if an equation is written in the correct way and balanced?
One method to determine if an equation is written in the correct way and balanced is to check that the number and type of atoms are the same on both sides of the equation by using the Law of Conservation of Mass.
How do ionic compounds and molecular compounds behave
differently in solution?
Answers
Answer : Molecular compounds dissolve in water by means of dipole-dipole attractions and hydrogen bond attractions. These attractions between the molecular compound and water don't form ions when a molecular compound dissolves.
Explanation: I hoped that helped,
What part of the rock cycle process is MOST closely associated with soil formation?
1. Compaction
2. Crystallization
3. Weathering
4. Melting
Answers
Answer: The most likely answer is weathering.
Explanation: When weathering accurs it breaks rocks and other big minerals into little tiny sediments creating soil.
17) What is the molarity
of a solution with
55 grams of CaCl2
dissolved in .78 L
of water?
a. 64M
b. 1.3 M
c. 171 M
d. 91 M
Answers
The molarity of a solution with 55 grams of CaCl2 dissolved in 0.78 L is 0.64M. Details about molarity is found below.
How to calculate molarity?The molarity of a solution can be calculated by dividing the number of moles of the substance by its volume.
However, the number of moles of a substance must first be calculated using the following expression:
no of moles = 55g ÷ 111g/mol
no of moles = 0.49mol
Molarity of CaCl2 solution = 0.49mol ÷ 0.78L
Molarity of CaCl2 solution = 0.64M
Therefore, the molarity of a solution with 55 grams of CaCl2 dissolved in 0.78 L is 0.64M.
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Why is it important to recycle electronic waste?
Answers
It saves energy, minimizes air and water pollution, cuts greenhouse gas emissions, and protects natural resources. Stanford recycled, composted, and otherwise decreased its trash by 62% and reduced landfill by 35%.
What is recycle?It saves energy, minimizes air and water pollution, cuts greenhouse gas emissions, and protects natural resources. Stanford recycled, composted, and otherwise decreased its trash by 62% and reduced landfill by 35%. The process of transforming waste resources into new materials and things is known as recycling. This notion frequently includes the recovery of energy from waste materials. The capacity of a material to regain the attributes it had in its original form determines its recyclability. Recycling is the collection and processing of items that would otherwise be discarded as waste in order to create new goods. Recycling may help your town, economy, and environment.
Here,
It saves energy, decreases air and water pollution, lowers greenhouse gas emissions, and protects natural resources. Stanford recycled, composted, and avoided landfill by 62% and 35%, respectively.
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Temperature of boiling water cannot be measured by a
_____________ thermometer.
Answers
Answer:
Cannot be measured by pyrometer.
Explanation:
This is because a pyrometer measures temperatures for very hot bodies such as the sun.
Answer:
Clinical
Explanation:
Temperature of boiling water cannot be measured by a Clinical thermometer The reason behind this is that the range of clinical thermometer varies between only 35° C to 42° C.
25cm3 of a 0.4M sodium hydroxide solution was diluted into 250cm3 of water. What is the molarityof the resultant solution.
Answers
Answer:
0.04 M
Explanation:
From the question given above, the following data were obtained:
Initial volume of solution (V1) = 25 cm³
Initial Molarity of solution (M1) = 0.4 M
Final volume of solution (V2) = 250 cm³
Final Molarity of solution (M2) =?
We can obtain the final Molarity of the solution by using the dilution formula as illustrated below:
M1V1 = M2V2
0.4 × 25 = M2 × 250
10 = M2 × 250
Divide both side by 250
M2 = 10/250
M2 = 0.04 M
Therefore, the resulting molarity of the diluted solution is 0.04 M
PLEASE URGENT HELP!! 30 POINTS!!!!!!
Answers
Answer:
CH³–C=CH——CH³–CH=CH²
Explanation:
THIS IS PROPYNE TO PROPENE
how would the concentration change if a 1.0 l flask of 1.0 m nacl were left uncapped on a laboratory bench for several days. why?
Answers
The concentration progressively increased as the water from the solution evaporated. This is because the amount in the flask would stay the same but the amount of water would decrease.
How would you make a 1 M NaCl solution in 1 litre?The atomic weight of sodium chloride (NaCl) is 58.44, which equals 58.44 grammes. If you mix 1 litre of finished solution with 58.44g of NaCl.
How does a 1.0% solution of NaCl dissolve?One gramme of solute is present in a 100 milliliter final volume one percent solution. For instance, a 1% NaCl solution is made by dissolving 1 g of sodium chloride in 100 ml of distilled water.
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Which of these properties is most helpful when identifying a substance in a
given sample of matter?
A. State
B. Mass
C. Melting point
D. Volume
Answers
Answer:
Melting point
Explanation:
Melting point is a intensive property and Intensive properties can be used to help identify a sample because these characteristics do not depend on the amount of sample, nor do they change according to conditions.
IF IT WAS HELPFUL HIT THE CROWN
Answer:
Explanation:
Yes melting point!
A small positively charged ball is moved closer to a large, positively charged ball. which describes how the small ball likely responds when it is released?
Answers
Answer:
This is just my guess, but since opposites attract, then im guessing that alikes repel each other. So, they will go away from each other when the ball is released (I think).
Explanation:
Hope this helps! If it did, please mark it as brainliest! It would help a lot! Thanks! :D
Which statement describes how the Van Allen belts are formed? O when low-energy particles from the Sun bounce off Earth’s magnetic field O when high-energy particles from the Sun bounce off Earth’s magnetic field O when low-energy particles from the Sun are trapped by Earth’s magnetic field O when high-energy particles from the Sun are trapped by Earth’s magnetic field (Earth/Space Science)
Answers
Answer:
when high-energy particles from the sun are trapped by earth's magnetic field
Explanation:
it is produced by a "depression" in the Earth's magnetic field in that area, caused by the fact that the center of the Earth's magnetic field is deviated from its geographic center by 450 km. Such an anomaly is thought by some to be a side effect of a Geomagnetic Reversal. These radiation belts originate from the Earth's intense magnetic field that is the product of their rotation. That field traps charged particles (plasma) from the Sun (solar wind), as well as charged particles that are generated by interaction of the Earth's atmosphere with cosmic radiation and high-energy solar radiation.
Answer:
D
Explanation:
its the last one
Which of the following transitions (in a hydrogen atom) represent emission of the shortest wavelength?
A n = 3 to n = 1
B n = 2 to n = 4
C n = 1 to n = 4
D n = 5 to n = 3
E n = 2 to n = 5
Answers
The transition C (n=1 to n=4) has the smallest value of 1/λ, which means it corresponds to the emission of the shortest wavelength. Therefore, the answer is option C.
The wavelength of the emitted photon in a hydrogen atom is given by the Rydberg formula:
1/λ = R [1/n1^2 - 1/n2^2]
where λ is the wavelength, R is the Rydberg constant, and n1 and n2 are the initial and final energy levels of the electron, respectively.
To find the transition that represents emission of the shortest wavelength, we need to find the transition with the largest energy difference between the initial and final states. This corresponds to the transition with the smallest value of 1/λ.
Using the Rydberg formula, we can calculate 1/λ for each transition:
A: 1/λ = R [1/1^2 - 1/3^2] = R(8/9)
B: 1/λ = R [1/4^2 - 1/2^2] = R(3/32)
C: 1/λ = R [1/4^2 - 1/1^2] = R(15/16)
D: 1/λ = R [1/3^2 - 1/5^2] = R(16/225)
E: 1/λ = R [1/5^2 - 1/2^2] = R(21/400)
Comparing the values, we can see that transition C (n=1 to n=4) has the smallest value of 1/λ, which means it corresponds to the emission of the shortest wavelength. Therefore, the answer is option C.
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according to md vehicle law, open containers are a any open bottles of any liquid. b any alcoholic beverage that is not as originally packaged. c any open container, no matter what is in the container. d none of the above(
Answers
b) any alcoholic beverage that is not as originally packed.according to md vehicle law, open containers are a any open bottles of any liquid.
A solid in a liquid solution is seawater, for instance.
What is present in sea water?
dissolved gases and mineral salts in water
A solute that is disseminated inside the solvent medium makes up a liquid solution in every case.
The fluid or liquid media serves as the solvent.
Due to the solute particles' uniform or even distribution throughout the solvent, such solutions are homogenous.
In comparison to the solvent, the solute is often present in lesser amounts.
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Conduct research to learn about the history
of atomic models and the scientists who developed the models. Identify any
experimental evidence and reasoning that supported each model
Answers
The atomic theory have been developed over the years by the works of many scientists.
What is the atomic theory?The atomic theory is the series of postulations that sought to explain the behavior of the atom. The study of the atom started as far back as the time of Democritus and Aristotle.
The first empirical study of the nature of the atom started with the work of John Dalton when he proposed the famous Dalton's theory. Further empirical work was carried out by J.J Thompson which gave rise to the plum pudding model of the atoms.
The work of Ernest Rutherford introduced the planetary model of the atom which was latter replaced by the Bohr model based on energy levels. Today, the work of Erwin Schrödinger has led us to the appreciation of the wave mechanical model of the atoms which is the mot accepted model for the atom today.
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which one of the following is not related to chemical weathering? hydrolysis frost wedging oxidation decomposition
Answers
Among the options listed, frost wedging is not directly related to chemical weathering.
Frost wedging is a physical weathering process that occurs in cold climates where water seeps into cracks in rocks, freezes, and expands, exerting pressure on the surrounding rock.
This expansion can cause the rock to break apart over time. While frost wedging does involve the action of water, it does not involve chemical reactions.
On the other hand, the remaining options—hydrolysis, oxidation, and decomposition—are all forms of chemical weathering. Hydrolysis is a chemical reaction where water molecules react with minerals in rocks, leading to their breakdown or alteration.
Oxidation occurs when oxygen reacts with certain minerals, such as iron, in rocks, resulting in their rusting or decomposition. Decomposition, also known as biological weathering, involves the breakdown of rocks through the actions of living organisms, such as lichens and plant roots.
Chemical weathering processes, including hydrolysis, oxidation, and decomposition, can alter the chemical composition and structure of rocks over time.
These processes play significant roles in shaping Earth's surface by breaking down and transforming various rock types.
Frost wedging, although a powerful physical weathering process, is not classified as a chemical process as it does not involve chemical reactions or changes in the mineral composition of rocks.
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Lead has a density of 11.4 grams per mL. If I make a statue out of 3.78 grams of lead, what is the statues volume
Answers
Answer:
0.332mL
Explanation:
11.4g/mL is 11.4 for every one mL
11.4g / 1mL needs to be the same ratio as 3.78g to an unknown value, let's call it x.
11.4g/1mL = 3.78g/x
We cross multiply: 1*3.78 = 11.4*x
3.78 = 11.4x
Now isolate x by diving 11.4 on both sides: 0.331578974mL = x
In chemistry, we usually round to significant figures, so our answer would be 0.332mL
Lighting a match is an example of what kind of energy conversion?
A. Chemical potential energy being converted to heat energy
B. Chemical potential energy being converted to kinetic energy
C. Gravitational potential energy being converted to heat energy
D. Kinetic energy being converted to chemical potential energy
Answers
Answer:
Mechanical Energy to Thermal Energy
When you strike a match, it moves through the air until it rubs against a surface. The rubbing produces the heat required to light the match. This is a transformation from mechanical energy to thermal (heat) energy.
Explanation:
Answer:
A is the answer.
Explanation:
what is p³×p simplify
Answers
Answer:
The answer is p⁴.
Explanation:
You have to apply Indices Law :
\( {a}^{m} \times {a}^{n} ⇒ {a}^{m + n} \)
For this question :
\( {p}^{3} \times {p}^{1} \)
\( = {p}^{(3 + 1)} \)
\( = {p}^{4} \)
The structure of lipids is:____.
a. dominated by hydrophobic regions.
b. dominated by hydrophilic regions.
c. equally dominated by hydrophilic and hydrophobic regions.
Answers
The structure of lipids is dominated by hydrophobic regions.
What are lipids and its function ? Where are lipids found in a body ??A Lipids is any of various organic compounds that are soluble in water . They include fats , waxes, oils, hormones and certain components of membrane and function as energy storage molecules and chemical messangers. Lipids are stored in your body primarily in specialized fat cells called adipocytes which comprises a specialized fatty tissues called adipose tissue.
Lipids are the structure of dominated hydrophobic regions.
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If a person weighs 125 lbs, 8 oz., how many mg does s/he weigh?
explanation
Answers
Answer:
56925842
Explanation:
its right
94. 2 ml of 3. 8 Molar Rubidium Carbonate is mixed with 38. 2 ml of 5. O Molar Barium Acetate to form a precipitate:
1)Calculate the theoretical mass in grams of the precipitate using only the volume and molartity of the barium acetate
Answers
Given that the volume and molarity of barium acetate are 38.2 ml and 5.0 M, respectively. We need to find the theoretical mass in grams of the precipitate. Let's first write the balanced chemical equation for the reaction taking place: Rubidium Carbonate + Barium Acetate → Barium Carbonate + Rubidium AcetateRb2CO3(aq) + Ba(C2H3O2)2(aq) → BaCO3(s) + 2 RbC2H3O2(aq).
We can see that 1 mole of barium acetate reacts with 1 mole of barium carbonate. Hence, the molar ratio of barium acetate and barium carbonate is 1:1.Using the molarity and volume of barium acetate, we can find the moles of barium acetate as: Moles of barium acetate = Molarity × Volume in litres= 5.0 mol/L × (38.2/1000) L= 0.191 moles. Now, from the balanced chemical equation, we can see that 1 mole of barium carbonate is formed from 1 mole of barium acetate.
Therefore, the number of moles of barium carbonate formed will also be 0.191 moles. Now, let's calculate the mass of barium carbonate using its molar mass. Molar mass of BaCO3= (1 × atomic mass of Ba) + (1 × atomic mass of C) + (3 × atomic mass of O)= (1 × 137.33 g/mol) + (1 × 12.01 g/mol) + (3 × 16.00 g/mol)= 197.33 g/mol. Theoretical mass of BaCO3= Number of moles of BaCO3 × Molar mass of BaCO3= 0.191 mol × 197.33 g/mol= 37.7 g. Therefore, the theoretical mass of the precipitate is 37.7 g (approx) when only the volume and molarity of the barium acetate are taken into account. Note: In order to find the limiting reagent and the actual mass of the precipitate formed, we need to consider the volume and molarity of both the reactants.
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Polyetheylene is 86.0% C and 14.0% H. Determine the empirical formula of the compound.
Percent to Mass: How many grams of C and H are present in 100.0 g?
A. 86.0 g C and 14.0 g H
B. 14.0 g C and 86.0 g H
C. 12.0 g and 1.00 g
Answers
The empirical formula of the compound is \(CH_2\)
The amount of C and H present in 100 g of the compound are 86 g and 14 g respectively. Option A.
Empirical formulaTo determine the empirical formula of polyethylene, we first need to find the ratio of carbon to hydrogen atoms in the compound.
Assuming 100.0 g of polyethylene, we can convert the percentages to masses:
Mass of carbon = 86.0% * 100.0 g = 86.0 g
Mass of hydrogen = 14.0% * 100.0 g = 14.0 g
Moles of carbon = 86.0 g / 12.01 g/mol = 7.163 mol
Moles of hydrogen = 14.0 g / 1.008 g/mol = 13.889 mol
Carbon:Hydrogen = 7.163 mol : 13.889 mol
Therefore, the empirical formula of polyethylene is CH2.
Since the compound is 86% C and 14% H, the amount of C and H present in 100 g of the compound would be 86 g and 14 g respectively.
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the third law of thermodynamics describes the entropy of a: select the correct answer below: solid liquid gas all of the above
Answers
The third law of thermodynamics describes the entropy of a: solid.
The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.
The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.
In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.
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