A student starts with s 18. 0 M solution of H2SO4. How many ml would be required to produce 235 ml of a 1. 77 M H2SO4 solution?

option b is the correct answer. In the given reaction, the chlorine molecule (Cl2) reacts with carbon disulfide (CS2) to form carbon disulfide chloride (CSCl2). During this reaction, chlorine gains electrons and carbon disulfide loses electrons.

This means that chlorine is the oxidizing agent, as it is responsible for the oxidation of carbon disulfide. Therefore, option b is the correct answer.

Oxidation is a chemical reaction that involves the loss of electrons or an increase in oxidation state by a molecule, atom, or ion. It is usually accompanied by a reduction reaction, which involves the gain of electrons or a decrease in oxidation state. In this reaction, carbon disulfide is being oxidized while chlorine is being reduced.

Overall, this reaction is an example of a redox reaction, where oxidation and reduction occur simultaneously. Redox reactions are essential in many chemical processes, including energy production, corrosion, and synthesis of important chemicals.

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In the reaction 2cs(s) + cl₂(g) → 2cscl(s), cl₂ is : b. the oxidizing agent. Hence, the correct option is b.

In the given reaction, Cl2 gains electrons and gets reduced to form CsCl. This means that Cl2 is accepting electrons, which is the definition of an oxidizing agent. It is important to note that the opposite process of oxidation is reduction, in which a species loses electrons.

Oxidizing agent is also known as an oxidant or oxidizer. It is a substance that facilitates or causes oxidation in chemical reaction. Oxidation is a process that involves the loss of electrons from substance and resulting in an increase in its oxidation state.

Therefore, Cs(s) is the reducing agent in this reaction because it is losing electrons and getting oxidized to form CsCl(s).

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Balanced equation :

C₂H₆+7O₂⇒4CO₂+6H₂O

Conservation of mass :

In a closed / isolated system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.

Conservation of mass applies to a closed system, where the masses before and after the reaction are the same

This is the basis of reference, that the total atoms in the reactants will be equal to the total atoms in the product

The elements in the reaction will also be found in the product, but in the form of other compounds

Reaction

\(\tt C_2H_6+O_2\rightarrow CO_2+H_2O\)

Let's look at the number of atoms in the reactants and products

C,left=2, right=1

H,left=6, right 2

O,left=2, right 3

So the equation not balanced

To balance, we can use the formula for burning alkanes or by using mathematical equations

1. Formula(in this case the hydrocarbon is ethane,n=2)

\(\large {\boxed {\bold {C_nH _ (_2_n _ + _ 2_) + \dfrac {3n + 1} {2} O_2 \rightarrow nCO_2 + (n + 1) H_2O}}}\)

2. Mathematical equations

give equation

C₂H₆+aO₂⇒bCO₂+cH₂O

C,left=2, right=b⇒b=2

H,left=6,right=2c⇒2c=6⇒c=3

O,left=2a,right=2b+c⇒2a=2b+c⇒2a=2.2+3⇒2a=7⇒a=7/2

C₂H₆+7/2O₂⇒2CO₂+3H₂O x 2

C₂H₆+7O₂⇒4CO₂+6H₂O

For a mineral that contains 50% of its original K-40, the statements which are true are option (a) Mineral Age = 50% of 1.25 b.y. - 0.625 b.y. and option (d) The percentage of Ar-40 atoms inside the mineral is reduced with time.

Potassium-40 (K-40) decays to Argon-40 (Ar-40) with a half-life of 1.25 billion years. For a mineral that contains 50% of its original K-40, the statements which are true :

a) Mineral Age = 50% of 1.25 b.y. - 0.625 b.y. - This statement is true. The age of the mineral is half the half-life of K-40 which equals 0.625 billion years.

b) Mineral Age = 1.25 by. X 1 elapsed half-life = 1.25 by. - This statement is false because the mineral contains only 50% of the original K-40.

c) The percentage of K-40 atoms inside the mineral increases with time. This statement is false because K-40 decays to Ar-40 with time.

d) The percentage of Ar-40 atoms inside the mineral is reduced with time. This statement is true because K-40 decays to Ar-40 with time. As K-40 decays, the percentage of Ar-40 atoms inside the mineral increases.

Thus, the statements which are true are option (a) Mineral Age = 50% of 1.25 b.y. - 0.625 b.y. and option (d) The percentage of Ar-40 atoms inside the mineral is reduced with time.

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Answer:

Explanation:

Decomposition reaction, also known as analysis or dissociation, is a type of chemical reaction in which a compound breaks down into simpler substances or elements. In this reaction, a single reactant undergoes a chemical change and produces two or more products.

The decomposition reaction can be represented by the general equation:

AB → A + B

Where AB is the reactant, and A and B are the products. The reactant AB is usually a compound, and it breaks down into its constituent elements or simpler compounds.

There are different types of decomposition reactions, including:

Thermal decomposition: It occurs when a compound is heated, resulting in its decomposition into simpler substances. For example, the thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2):

CaCO3 → CaO + CO2

Electrolytic decomposition: It takes place when an electric current is passed through an electrolyte, causing it to break down into its component ions. For instance, the electrolysis of water (H2O) leads to the decomposition into hydrogen gas (H2) and oxygen gas (O2):

2H2O → 2H2 + O2

Photochemical decomposition: It occurs when a compound undergoes decomposition due to exposure to light energy. Chlorine gas (Cl2) can decompose into chlorine atoms (Cl) under the influence of light:

Cl2 → 2Cl

These are just a few examples of decomposition reactions. They are important in various chemical processes and are used in industries, laboratory experiments, and natural phenomena. By understanding and controlling decomposition reactions, scientists can gain insights into the behavior of different compounds and develop practical applications in fields such as chemistry, materials science, and environmental science.

Answer:

Explanation:

reaction in which a compound breaks down into simpler substances or elements

Answer:

I think it's False

Explanation:

Explanation:

The amount of water in, on, and above our planet does not increase or decrease because of the water cycle

So it's false

Answer:

A. Enzymes

Explanation:

Enzymes are in our saliva and tears. They help break down pathogens and the cell wall of bacteria.

I hope it helps! Have a great day!

Muffin~

Answer:

A. Enzymes.

Explanation:

Enzymes break down things and they are in both our saliva and tears.

I hope it helps! Have a great day!

.-.

Explanation:

We have a 63.9 g sample of calcium hydroxide. First we have to convert those grams into moles. To do that we have to use the molar mass of calcium hydroxide.

Calcium hydroxide = Ca(OH)₂

molar mass of Ca = 40.08 g/mol

molar mass of O = 16.00 g/mol

molar mass of H = 1.01 g/mol

molar mass of Ca(OH)₂ = 1 * 40.08 g/mol + 2 * 16.00 g/mol + 2 * 1.01 g/mol

molar mass of Ca(OH)₂ = 74.10 g/mol

mass of Ca(OH)₂ = 63.9 g

moles of Ca(OH)₂ = 63.9 g /(74.10 g/mol)

moles of Ca(OH)₂ = 0.862 moles

In 1 molecule of Ca we have 2 atoms of O. So in 1 mol of Ca(OH)₂ we will have 2 moles of O atoms.

1 mol of Ca(OH)₂ = 2 moles of O atoms

moles of O atoms = 0.862 moles of Ca(OH)₂ * 2 moles of O /1 mol of Ca(OH)₂

moles of O atoms = 1.724 moles

One mol is similar to a dozen. When we say that we need a dozen eggs we know that we need 12 eggs. If we want a mol of eggs, we want 6.022*10^23 eggs. So one mol of something is 6.022 * 10^23 of that.

1 mol of O atoms = 6.022 * 10^23 atoms

n° of O atoms = 1.724 moles * 6.022 * 10^23 atoms/1 mol

n° of O atoms = 1.04 * 10^24 atoms

Answer: In a 63.9 g sample of Ca(OH)₂ we have 1.04 *10^24 atoms of oxygen.

The carbon intermediate generated via homolytic bond cleavage of a C-C sigma bond is called a carbon radical.

When a C-C sigma bond undergoes homolytic bond cleavage, it means that the bond is broken in a way that each bonding electron is split equally between the two carbon atoms. This process leads to the formation of two carbon radicals.

A radical is a highly reactive species that possesses an unpaired electron. In the case of the carbon radical generated from the cleavage of a C-C sigma bond, one carbon atom retains the unpaired electron, while the other carbon atom also possesses an unpaired electron. These carbon radicals are represented as •C and •C, where the dot represents the unpaired electron.

Due to the presence of the unpaired electron, carbon radicals are highly reactive and tend to participate in chemical reactions to attain stability. They can engage in various reactions, such as radical addition, radical substitution, or radical polymerization, by either accepting or donating an electron to another atom or molecule.

Overall, the carbon intermediate generated via homolytic bond cleavage of a C-C sigma bond is known as a carbon radical, which is a highly reactive species with an unpaired electron.

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Answer:

thanks for the points

Explanation:

The Option C is correct precipitation is concentrated in the season

Hope it help

Answer:

C) precipitation is concentrated in one season

Explanation:

edge 2020

Answer:

0.202M

Explanation:

you will want to use C₁V₁=C₂V₂ to solve for this.

C₁ is the initial concentration, in this problem it is .458 mol/L or M

V₁ is the initial volume, so it will be the 22.0 mL or 0.0220L

C₂ is the new concentration but here it is unknown.

V₂ is the new volume which is 50.0 mL or 0.0500L.

1. So now we plug this information in to the equation:

\((.458 mol/l)(0.0220L)=(C_{2} )(0.0500L)\)

2. We then do algebra to get C₂ alone:

\(C_{2} =\frac{(.458 mol/L)(0.0220L)}{(0.0500L)} =0.20152 mol/L or M\)

The liters cancel out and take note of the significant figures, there are 3 digits in all numbers in the question, so that means your answer must contain 3 sig figs. The answer 0.0202 rounded.

** instead of converting the mL to L you can also just keep them mL since they will be crossed out anyway. You will still get the correct answer.

Hope this help you! good luck :)

\(\begin{aligned} -5x+4y &= 3\\\\ x&=2y-15 \end{aligned}\)

The metals that are able to displace iron sulfate from solution are magnesium and aluminum.

The electrochemical series is a series that shows the reactivity of the metals. We must note that the order of the reactivity of the metals depends on the electrode potential of the metal. The metals that have a higher electrode potential would tend to react better and faster.

Also note that, the metals that are higher in the electrochemical series are able to displace the metals that are lower in the series from their aqueous solutions. This implies that if we add a metal to a solution that contains a meta that is lower in the electrochemical series, the lower meta is discharged from solution.

As we can see, when we add each of these metals to the iron sulfate solution, the only time that we would be able to have a reaction is when  we add the aluminum or the magnesium metals.

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Answer:

25.45 Liters

Explanation:

Using Ideal Gas Law PV = nRT => V = nRT/P

V = (1mole)(0.08206Latm/molK)(298K)/(1atm) = 25.45 Liters

Answer:

Im pretty sure its alpha

Explanation:

Alpha radiation has been identified as helium nuclei that have been stripped of their planetary electrons, and each consists of two protons and two neutrons.

To stabilize carbon dioxide concentrations, emissions must stop increasing. Carbon dioxide (CO2) is a greenhouse gas that traps heat in the Earth's atmosphere. As a result, CO2 is the most important driver of global warming.

To stabilize carbon dioxide concentrations, emissions must stop increasing. Carbon dioxide (CO2) is a greenhouse gas that traps heat in the Earth's atmosphere. As a result, CO2 is the most important driver of global warming. Human activities, such as burning fossil fuels for energy and transportation, deforestation, and industrial processes, emit vast amounts of CO2 into the atmosphere, increasing its concentration. The concentration of CO2 in the atmosphere has risen dramatically since the Industrial Revolution, from about 280 parts per million (ppm) to over 400 ppm today.

Scientists have concluded that to avoid the worst impacts of climate change, including rising sea levels, more frequent and severe weather events, and food and water scarcity, the concentration of CO2 in the atmosphere must be stabilized at or below 450 ppm. In order to achieve this, global emissions of CO2 must be reduced to zero. However, the challenge is not only to reduce emissions but also to remove CO2 from the atmosphere through methods such as reforestation, soil management, and carbon capture and storage technologies.

In conclusion, stabilizing carbon dioxide concentrations is critical to mitigating the impacts of climate change, and it requires both reducing emissions to zero and removing CO2 from the atmosphere through various means. The process is complex, and it will require a global effort to achieve this goal.

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Selecting resources with reliable credentials and expertise is important for any information we look up, on any topic.

The resources can be studied as reliable and credentials if they include the information that arises from an authentic source. And also, the resource that has been verified by many reviewers that exhibit special knowledge and expertise in the linked field of the topic can be contemplated as reliable and credential. That kind of resource can be looked upon for retrieving needed information on any topic.

It is important to evaluate our sources. When we do research, surely, we want to find the best information to support our ideas. This needs careful evaluation of the information we collect.

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The Resource Conservation and Recovery Act (RCRA) identifies c. three categories of waste generators. These categories help ensure that hazardous waste is managed according to the risks it poses to human health and the environment.

These categories are:
1. Conditionally Exempt Small Quantity Generators (CESQGs): This category includes generators that produce less than 100 kilograms (approximately 220 pounds) of hazardous waste per month. These generators are subject to less stringent regulations compared to the other two categories.
2. Small Quantity Generators (SQGs): This category comprises generators that produce between 100 and 1,000 kilograms (approximately 220 to 2,200 pounds) of hazardous waste per month. SQGs must adhere to specific regulations for hazardous waste management, including proper storage, transportation, and disposal.
3. Large Quantity Generators (LQGs): This category includes generators that produce more than 1,000 kilograms (approximately 2,200 pounds) of hazardous waste per month. LQGs must follow more stringent regulations than the other two categories, including stricter storage, recordkeeping, reporting, and disposal requirements.
By categorizing waste generators, RCRA enables regulatory agencies to enforce appropriate safety measures and compliance requirements based on the amount of waste produced.

The complete question is:-How many categories of waste generators are identified by RCRA?

a. One

b. Two

c. Three

d. Five

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Answer:

6.408924056 miles/hour.

Explanation:

First we have to convert 247.54 km to miles. The conversion factor will be 1 km = 0.621371 miles. To do this I set up my stoichiometry.

247.54km | 0.621371miles = 153.8141773 miles

                 |  1 km

Now we have 153.8141773 miles per 1 day. The conversion factor will be 1 day = 24 hours.

153.8141773 miles | 1 day       6.408924056 miles/hour.

1 day                      | 24 hours

(if you need to know what I did with the stoichiometry just ask! I'll be happy to help!)

Answer:

o sou imleyna leqro mueuto ajdairv  c aegra vamos loámas...i o

Explanationaer pgunta t:á incoplmeta

Answer:

sea urchins

Explanation:

Answer:

sea urchins

Explanation:

i took the test

Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:

folic Acid

Folic acid, often known as folate, is a water-soluble B vitamin that is necessary for the generation of healthy red blood cells and the regular functioning of the brain system. Folate is present in numerous foods, including leafy green vegetables, legumes, nuts, and grains. Numerous processed goods, including breakfast cereals, breads, and rice, contain it as well. Folic acid is essential for pregnant women because it prevents birth abnormalities. It is also crucial for people of all ages since it helps maintain the health and normal operation of the body's cells. Folic acid is also essential for the production and repair of DNA, as well as the breakdown of specific proteins. Without appropriate folic acid, the body cannot produce red blood cells effectively, which can result in anemia. It is essential to consume adequate amounts of folic acid through diet or supplementation.

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Answer

1.50 mol

Explanation

Given:

Initial volume, V₁ = 25.0 L

Mass of CH4 gas in 25.0 L container = 40 g

Final volume, V₂ = 15.0 L

From the Periodic Table; molar mass of CH4 = 16.04 g/mol

What to find:

The new amount in mole.

Step-by-step solution:

According to Avogadro’s law: For a confined gas, the volume (V) and number of moles (n) are directly proportional if the pressure and temperature both remain constant. That is:

n₁ = Mass/Molar mass = (40.0g/16.04 g/mol) = 2.493765586 mol

n₂ is the new amount in mole and can be calculated as follows:

The new amount in moles is 1.50 moles

Answer:

The theoretical yield in grams is 60.292 grams, and in moles the theoretical yield is 0.384. The percent yield is 94%.

Explanation:

The theoretical yield of bromobenzene is 60.3 grams and the percent yield of the reaction is 94.0%.

Explanation:

\(Yield(\%)=\frac{\text{Actual or experimental yield}}{\text{Theoretcial yield}}\times 100\)

Given:

Mass of benzene = 30.0 g

The actual yield of bromobenzene = 56.7 g

To find:

Theoretical yield and percent yield of the reaction.

Solution:

Mass of benzene = 30.0 g

Moles of benzene =\(\frac{30.0 g}{78.11 g/mol}=0.384 mol\)

\(C_6H_6+Br_2\rightarrow C_6H_5Br+HBr\)

According to reaction, 1 mole of benzene gives 1 mole of bromobenzene, then 0.384 moles of benzene will give:

\(=\frac{1}{1}\times 0.384 mol=0.384 \text{mol of bromobenzene}\)

Mass of 0.384 moles bromobenzene:

\(=0.384 mol\times 157.02g/mol=60.3 g\)

The theoretical yield of bromobenzene = 60.3 g

The actual yield of bromobenzene = 56.7 g

The percent yield of the reaction:

\(Yield(\%)=\frac{56.7 g}{60.3 g}\times 100=94.0\%\)

The theoretical yield of bromobenzene is 60.3 grams and the percent yield of the reaction is 94.0%.

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Answer:

3 moles of CaO

Explanation:

The chemical balanced equation is;

2Ca + O₂ → 2CaO

The ratio of calcium(Ca) to Calcium Oxide(Cao) in this equation is 2:2.

Now, when 3 moles of calcium react with oxygen, Cao produced will be;

3 moles of O₂ × 2 moles of CaO/2 moles of Cao = 3 moles of CaO

The correct order of decreasing acidity for the given compounds is option F, which is 3142.  Acidity of a compound is determined by the strength of its conjugate base.

The stronger the conjugate base, the weaker the acid. In this case, all the given compounds have a carboxylic acid functional group, which is a strong acid. However, the strength of the acid is affected by the electronegativity of the substituents on the carbon atom. The more electronegative the substituent, the stronger the acid.

Therefore, CF3COOH (compound 3) is the strongest acid due to the presence of the highly electronegative CF3 group. CH3COOH (compound 1) is the next strongest acid due to the presence of the moderately electronegative CH3 group. CCI3COOH (compound 4) is weaker than CH3COOH due to the presence of the highly electronegative CCI3 group. Finally, CH3CH2OH (compound 2) is the weakest acid as it does not have any electronegative substituents.

Thus, the correct order of decreasing acidity is 3142 (option F).

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The only situation where there is an increase in entropy;

The term entropy has to do with the degree of disorder in a system. Thus we must recall that gases tend to move very freely and the the gas does not have a particular or a fixed shape or volume. Hence, the level of the disorderliness would increase so much when a gas is produced.

The entropy is least when we have a solid because the particles that compose a solid are all held together in such a way that the particles do not move about freely in the system.

Thus, when there is an isothermal compression of the gas, the molecules of the gas collide more frequently with each other and entropy increases.

When a gas expands, it spreads out and entropy is reduced. When a glass of water looses energy, the molecules of the water would decrease in speed and entropy is reduced.

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The minimum number of polarizing filters required to achieve a configuration such that the detector only detects 6% of the initial photons would be two.

Polarizing filters are used to transmit light waves that are polarized in a specific direction and block light waves that are polarized in a perpendicular direction. When two polarizing filters are placed in series, the intensity of the light that passes through both filters is proportional to the product of the transmissions of each filter.

Let's assume that the transmission of each polarizing filter is represented by T. If we want the detector to only detect 6% of the initial photons, we can write the equation as follows:

0.06 = T₁ × T₂

Since T represents the transmission of each polarizing filter, it must be a value between 0 and 1. To minimize the number of polarizing filters required, we want T₁ and T₂ to be as close to 1 as possible. So, we can choose T₁ and T₂ to be equal to 0.2:

0.06 = 0.2 × 0.2

Therefore, the minimum number of polarizing filters required to achieve a configuration such that the detector only detects 6% of the initial photons is two.

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--The given question is incomplete, the complete question is

"Using only polarizing filters (the second element under the polarization section) create a configuration such that the detector only detects 6% of the initial photons. what is the minimum number of polarizing filters required to achieve this?"--

The first two reactions are double displacement reactions, the next three equations are single replacement reactions, and the last equation is a type of decomposition reaction.

An equation for a chemical reaction is said to be balanced if both the reactants and the products have the same number of atoms and total charge for each component of the reaction. In other words, both sides of the reaction have an equal balance of mass and charge.

Chemical formulae and symbols are used in chemical equations to depict chemical reactions. In a chemical equation, the reactants are represented on the left and the products are shown on the right.

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