what element is being oxidized in the following redox reaction? h2o2(l) clo2(aq) → clo2-(aq) o2(g)

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass = 4.75 g

volume = 0.5325 cm³

We have

\(density = \frac{4.75}{0.5325} \\ = 8.920187\)

We have the final answer as

Hope this helps you

Answer:

I don't really have an answer it's very confusing sorry

Explanation:

... ;w;

a. The balanced chemical equation of all steps mention in question.

1. \(2PbS(s) + 3O_{2}(g)\) → \(2PbO(s) + 2SO_{2}(g)\)

2.\(2PbO(s) + PbS_{}(s)\) → \(3Pb(l) + SO_{2}(g)\)

b. An overall balanced equation for the process.

\(PbS(s) + O_{2}(g)\) → \(Pb(l) + SO_{2}(g)\)

c. 0.31 metric tons of \(sulfur dioxide\) form for every metric ton of \(lead\)obtained.

One metric ton of \(lead\) obtained = 1×\(10^{6}\)g of \(Pb\)

Molar mass of \(Pb\) = 207.2 g/mol

Moles of \(SO_{2}\) = 1×\(10^{6}\) g of \(Pb\) × 1 mol \(Pb\)/207.2 g of \(Pb\) × 1 mol \(SO_{2}\) /1 mol \(Pb\) = 4826.25 moles \(SO_{2}\)

Molar mass of \(SO_{2}\) = 64.07 g/mol

Mass of \(SO_{2}\) formed = 4826.25 mol \(SO_{2}\) × 64.07 g \(SO_{2}\)/1 mol \(SO_{2}\) = 3.09 × \(10^{5}\)  g \(SO_{2}\)

Mass of \(SO_{2}\) formed = 0.31 matric ton \(SO_{2}\).

The symbolic representation of conversion reactant into product is called chemical equation.

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Explanation:

Refer to attachment.

Hope it helps.

Zinc nitrate has 1 molecule of zinc (Zn), 2 molecules of nitrogen (N) and 6 molecules of oxygen (O).

Calculate the molecular mass of zinc nitrate by adding the molecular weights for all molecules in the compound.

Here are the molecular weights for each element:

Zn=65.38 g/mol

N=14.01 g/mol

O=16.00 g/mol

The molecular weight of zinc nitrate is then: 1*(65.38)+2*(14.01)+6*(16.00)=189.40 g/mol.

Using a conversion formula to calculate moles of zinc nitrate:

163.97gZn(NO

3

​

)

2

​

∗

189.40gZn(NO

3

​

)

2

​

1molZn(NO

3

​

)

2

​

​

=0.866molZn(NO

3

​

)

2

​

There are 0.866 moles of zinc nitrate.

Note: These numbers may vary slightly due to the source of the molecular weight data and the number of decimal places used.

Volume in of 0.853 M Ca(OH)2 needed to neutralize 52.1 ml of 0.821 M H3PO4 in a titration is calculated as V = 0.751 mL.

Titration is a laboratory method of quantitative chemical analysis for the determination of the concentration of an identified analyte.

2H3PO4 + 3Ca (OH)2 --> Ca3(PO4)2 +6H2O

Number of moles = V * M

Molarity of H3PO4 = 0.821 M

Volume of  H3PO4= 52.1 * 10^-3 L

Number of moles of  H3PO4 = 0.821 *52.1 * 10^-3

Number of moles of Ca (OH)2 required to react with 2 moles of H3PO4 is 3

Number of moles of Ca (OH)2 required to react with 42.77 * 10^-3 moles of H3PO4

= 3/2 * 42.77 * 10^-3

= 6.41  * 10^-4

Given that molarity of Ca(OH)2 is 0.853 M

V=  6.41  * 10^-4/0.853

= 75.146 * 10^-3 L

V = 0.751 mL

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The percentage by mass of an element in a compound is calculated as follows Percentage by mass = (Mass of element / Mass of compound) x 100 to find the percentage by mass of hydrogen in acetic acid (CH3COOH), we need to determine the mass of hydrogen and the mass of the compound.

To find the mass of hydrogen in acetic acid, we first need to know how many hydrogen atoms are in the molecule CH3COOH. There are 2 hydrogen atoms in the molecule, so we need to calculate the mass of 2 hydrogen atoms.The mass of one hydrogen atom is 1.008 g/mol, so the mass of 2 hydrogen atoms is:2 x 1.008 g/mol = 2.016 g/molTo find the mass of the compound, we need to add up the masses of all the atoms in the molecule. The molecular formula of acetic acid is CH3COOH, so we have

carbon atom with a mass of 12.01 g/mol3 hydrogen atoms with a mass of 1.008 g/mol each1 oxygen atom with a mass of 16.00 g/molThe total mass of the compound is:12.01 + 3(1.008) + 16.00 + 16.00 = 60.05 g/molNow we can calculate the percentage by mass of hydrogen in acetic acid:Percentage by mass of hydrogen = (2.016 g/mol / 60.05 g/mol) x 100 = 3.36%Therefore, the main answer is that the percentage by mass of hydrogen in acetic acid is 3.36%. We find the mass of the element in the compound and divide it by the mass of the whole compound and multiply by 100 to get the percentage by mass.

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A homogeneous mixture, also known as a solution, is a liquid mixture where one or more substances are combined in such a way that they cannot be separated by filtering or allowing the mixture to stand. Unlike heterogeneous mixtures, such as suspensions or colloids, homogeneous mixtures have uniform composition and properties throughout.

The different substances in a homogeneous mixture are evenly distributed at a molecular or atomic level, resulting in a single phase.

This uniform distribution makes it challenging to visually differentiate the individual components of the mixture.

Examples of homogeneous liquid mixtures include saltwater, vinegar, and ethanol-water solutions.

The inability to separate the components of a homogeneous mixture by simple physical means is due to the intimate mixing and molecular interactions between the substances involved.

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Answer:

44

Explanation:

You multiply the length value by 1000

Answer:

0.044 km × 1000 = 44 meters

the blades in a windmill rotate

Answer:

Yall are coming after that person above me when theres no diagram!!!! HELLO????????????? crazy

Explanation:

During beat decay

D. A neutron decays into a proton and an electron occurs during beta decay.

Beta decay is a type of radioactive decay that occurs when an unstable atomic nucleus emits an electron (called a beta particle) and a type of neutrino called an antineutrino.

During beta decay, a neutron within the nucleus of an atom decays into a proton, an electron, and an antineutrino. The proton stays in the nucleus, increasing the atomic number by one, while the electron and antineutrino are emitted from the nucleus. The emitted electron is often referred to as a beta particle, hence the name beta decay

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Because the Trichloroisocyanuric acid (TCICA) test is used to separate primary from secondary alcohols. Both major alcohols, methanol, and ethanol will undergo TCICA's oxidation process. Consequently, acetonitrile is employed as the solvent for the TCICA test rather than one of these.

What is TCICA test?

Simple primary and secondary alcohols can easily be separated from one another based on how quickly they oxidize when exposed to trichloroisocyanuric acid (TCICA). The TCICA test is carried out by adding the unknown to a solution of TCICA in acetonitrile3 containing hydrochloric acid4 and timing how long it takes for a precipitate5 to develop. Secondary alcohols respond quickly while primary alcohols react more slowly.

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Answer: The water Inside the cell is stored inside the vacuole(s)

Explanation:

Hope this helps :)

The chemical formula for aluminum oxide based on ionic bonding from valence electrons is Al₂O₃.

The chemical formula of a compound is a symbolic representation of its chemical composition.

Chemical formulae gives information about the elements that constitute the molecules of a compound and also about the ratio in which the atoms of these elements combine to form such molecules.

In this compound, aluminum (Al) donates three electrons to oxygen (O), resulting in the formation of Al³⁺ cations and O²⁻ anions. The ionic bond is formed between these oppositely charged ions, resulting in the formula Al₂O₃.

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Answer:

D because i did this last week and got it right.

A positive H indicates that the potential energy of products is higher than the potential energy of reactants.

A potential energy diagram is a diagram which shows the energy content of reactants and products as well as the energy changes that occur in a reaction.

A positive H in a reaction indicates that the reaction is endothermic and that products have a higher potential energy than reactants.

Therefore, a positive H indicates that tje potential energy of products is higher than the potential energy of reactants.

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0.010 M solution of hydrochloric acid, HCl has a pH of 2.00 but a 0.010 M solution of acetic acid, HCH₃COO, is 3.37 is because HCl dissociates more.

This is the separation of ions of an ionic compound when it dissolves.

Since 0.010 M solution of hydrochloric acid, HCl has a pH of 2.00 its hydrogen ion concentration is gotten from

pH = -log[H⁺]

So,

\([H^{+} ] = 10^{-pH}\)

So, [H⁺] = 10⁻²

Also, since 0.010 M solution of acetic acid, HCH₃COO, has a pH of 3.37, its hydrogen ion concentration is gotten from

pH = -log[H⁺]

So,

\([H^{+} ] = 10^{-pH}\)

So, [H⁺] = 10⁻³°³⁷ = 0.000427 = 4.27 × 10⁻⁴

Since the hydrogen ion concentration of HCl is 10⁻² and the hydrogen ion concentration of HCH₃COO is 4.27 × 10⁻⁴, we see that HCl dissociates more than HCH₃COO.

So, 0.010 M solution of hydrochloric acid, HCl has a pH of 2.00 but a 0.010 M solution of acetic acid, HCH₃COO, is 3.37 is because HCl dissociates more.

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The mass of 2450 mL of ethanol with a specific gravity of 0.810 is 1984.5 grams.

The equation to calculate the mass (in grams) of a substance using its specific gravity (SG) and volume (in milliliters) in the SI system is:

Grams = milliliters × SG

For example, let's say you have 2450 mL of ethanol with a specific gravity of 0.810. To calculate the mass in grams, you would use the following equation:

Grams = 2450 mL × 0.810

Simplifying the equation, you get:

Grams = 1984.5 g

Therefore, the mass of 2450 mL of ethanol with a specific gravity of 0.810 is 1984.5 grams.

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The only factors that doesn't affect surface current from the question is B:

density.

Therefore, Option D is correct because density does affect the surface current.

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Answer:

malleable

Explanation:

The image represent in malleable property of metal.

The image possibly represents the photoelectric effect of a metal, which is when it emits electrons after being exposed to electromagnetic radiation. Metals are also characterized by physical properties such as conductivity, malleability, metallic luster, and metallic bonding.

Based on your question, the image possibly represents the photoelectric effect, a key property of metals. This phenomenon occurs when a metal surface exposed to electromagnetic waves of a certain frequency absorbs radiation and emits electrons. These emitted electrons are called photoelectrons. Metals can also exhibit free electron model behavior, where electrons freely roam within the metal structure.

Metals possess unique physical properties like conductivity, malleability, and metallic luster. Malleability refers to the metal's ability to deform without breaking, while conductivity refers to the metal's ability to transfer heat or electricity. A metallic luster gives metals their characteristic shiny appearance.

Finally, metals are also known for their metallic bonding—a unique force that holds together the atoms within a metallic solid. Metallic bonding gives rise to many useful and varied bulk properties of metals.

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0.197 M NaOH​ is the molarity of a solution made by dissolving 11.8 g of NaOH (solid) in sufficient water.

Thus, The total number of moles of solute in a given solution's molarity is expressed as moles of solute per liter of solution.

As opposed to mass, which fluctuates with changes in the system's physical circumstances, the volume of a solution depends on changes in the system's physical conditions, such as pressure and temperature.

M, sometimes known as a molar, stands for molarity.

When one gram of solute dissolves in one litre of solution, the solution has a molarity of one. Since the solvent and solute combine to form a solution in a solution, the total volume of the solution is measured.

Thus, 0.197 M NaOH​ is the molarity of a solution made by dissolving 11.8 g of NaOH (solid) in sufficient water.

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The balanced chemical equation for the standard formation reaction of solid water is: H₂ (g) + 1/2O(g) → H₂O(s)

The standard formation reaction of solid water is: H₂ (g) + 1/2O₂(g) --> H₂O(s)

The balanced chemical equation for the standard formation reaction of solid water is: H₂ (g) + 1/2O(g) → H₂O(s)

The standard enthalpy change of the above reaction can be determined from the enthalpies of formation of the products and reactants using Hess's Law.

Standard enthalpy of formation (∆Hfo) is defined as the amount of heat absorbed or released when one mole of a substance is formed from its constituent elements in their standard states under standard conditions (∆Hfo=0 at 298 K and 1 atm).

Since H₂O(s) is the standard state of water, its standard enthalpy of formation (∆Hfo) is -285.8 kJ/mol. This means that the formation of one mole of solid water releases 285.8 kJ of heat energy.

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Answer:

The 4th statement. Because sulfur is not malleable.

Answer:

d

Explanation:

The base peak of (E)-2-hexene would occur at m/z 56. This is because the base peak is the most intense peak in the mass spectra of a compound, and it corresponds to the most stable ion that is produced during fragmentation of the compound in the mass spectrometer.

To determine at what m/z the base peak of (E)-2-hexene would occur, it's important to consider the fragmentation pattern and possible ionization modes of the compound. The base peak is usually the result of the most stable and abundant fragment ion, which can be formed by the cleavage of weak bonds.

From the given options it can be narrowed down that (E)-2-pentene has a similar structure to (E)-2-hexene, so it's likely that their mass spectra would be similar. Based on the fragmentation pattern of (E)-2-pentene, the base peak is likely to occur at m/z 41, which corresponds to the fragment ion C3H7+.

Therefore, it's possible that the base peak of (E)-2-hexene would also occur at m/z 41, as it's a common fragment ion in many alkenes. However, it's important to note that the exact m/z value of the base peak can vary depending on the conditions of the mass spectrometer and the fragmentation pattern of the compound.

Take note, however, that In this case of (E)-2-hexene, the most stable ion is the one that is produced when the molecule fragments at the C-C bond between the second and third carbon atoms, resulting in a fragment with a molecular weight of 56. Therefore, the base peak of (E)-2-hexene would occur at m/z 56 and none of the options listed (A-E) would have a base peak at this m/z value, as their molecular weights and fragmentation patterns are different from that of (E)-2-hexene. #SPJ11

The ionic equation:

2Mn\(O^{- }_{4}\) + 5 H2O4 + 6 \(H^{+}\)⇄  2\(Mn^{2+}\) + 10 CO2 + 8H2O

Molarity of KMnO4 is 0.0229M

Molarity:

Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of the amount of substance per unit volume of solution.

Formation of  the ionic equation:

2 × ( Mn\(O^{-}\)4)  + 8 \(H^{+}\) + 5\(e^{-}\) ⇄ \(Mn^{2+}\)  + 4 H2O )

5 × ( H2C2O4  ⇄ 2CO2  + 2\(H^{+}\)  + 2\(e^{-}\) )

_______________________________________

2Mn\(O^{-} _{4}\)  + 5 H2C2O4  + 6\(H^{+}\) ⇄ 2M\(n^{2+}\) + 10 CO2 + 8 H2O

Now we have to find the molarity of the permanganate,

Volume = 28.97ml

mass = 0.1058g

molecular mass = 0.105 × 1000/ 28.97

                          = 3.62g

molecular mass = 158

Molarity of the solution = mass/ molecular mass

                                       = 3.62/ 158

                                       = 0.0229M

Therefore the ionic equation is 2Mn\(O^{- }_{4}\) + 5 H2O4 + 6 \(H^{+}\)⇄  2\(Mn^{2+}\) + 10 CO2 + 8H2O and the molarity of the permanganate solution is 0.0229M.

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Answer and Explanation:

When methane (CH4) and chlorine (Cl2) react, a substitution reaction takes place. Specifically, the reaction is a halogenation reaction, in which one or more hydrogen atoms in the methane molecule are replaced by chlorine atoms. The reaction can be represented by the following equation:

CH4 + Cl2 → CH3Cl + HCl

In this equation, CH3Cl represents chloromethane, which is a type of organochlorine compound. The reaction is typically initiated by ultraviolet (UV) light or heat, and it proceeds through a series of free radical chain reactions. The products of the reaction are typically a mixture of chloromethane and hydrogen chloride (HCl) gas.

This reaction mechanism involves the formation of an intermediate (tetrahedral intermediate) and proton transfer (deprotonation).

It is important to note that this reaction must be carried out under carefully controlled conditions and in the presence of an acid catalyst (such as sulfuric acid) to ensure maximum yield and purity of the product.

The synthesis of acetanilide from aniline and acetic anhydride involves the following reaction mechanism:

Protonation of Aniline

The first step is the protonation of aniline in the presence of acetic anhydride, which leads to the formation of anilinium ion.

Aniline + Acetic Anhydride → Anilinium ion + Acetate ion

Nucleophilic Attack of Anilinium Ion

The anilinium ion acts as a nucleophile and attacks the carbonyl carbon of acetic anhydride, which leads to the formation of a tetrahedral intermediate.

Anilinium ion + Acetic Anhydride → Tetrahedral intermediate

Loss of Acetate Ion

In this step, the tetrahedral intermediate loses an acetate ion to form N-acetylaniline.

Tetrahedral intermediate → N-acetylaniline + Acetate ion

Deprotonation

The final step involves the deprotonation of N-acetylaniline to yield acetanilide.

N-acetylaniline → Acetanilide + H+

Overall Reaction:

Aniline + Acetic Anhydride → Acetanilide + Acetic Acid

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Answer: True

Explanation: Synthetic materials are not found in nature and can be created in labs using chemicals and compounds.