The rate of a certain reaction with unit of M/s increase by a factor of 4 when [A] doubled and increase by a factor of 27 when [B] triples. What is the unit of rate constant for this reaction?

Answer:

For the complete combustion of 10 g of glucose 11.52 g of oxygen is required.

Explanation:

Given data:

Mass of glucose = 10 g

Mass of oxygen required for complete combustion = ?

Solution:

Chemical equation:

C₆H₁₂O₆ + 6O₂    →  6CO₂ + 6H₂O

Now we will convert the given mass of glucose into number of moles.

Number of moles = mass/ molar mass

Number of moles = 10 g/ 180.156 g/mol

Number of moles = 0.06 mol

Now we will compare the moles of glucose with oxygen.

         C₆H₁₂O₆            :              O₂

            1                     :               6

          0.06                :            6×0.06 = 0.36 mol

Mass of oxygen required:

Mass = number of moles × molar mass

Number of moles  = 0.36 mol × 32 g/mol

Number of moles = 11.52 g

For the complete combustion of 10 g of glucose 11.52 g of oxygen is required.

Answer:

Flash Flood

Explanation:

On July 31, 1976, during the celebration of Colorado's centennial, the Big Thompson Canyon was the site of a devastating flash flood that swept down the steep and narrow canyon, claiming the lives of 143 people, 5 of whom were never found.

The equilibrium constant can be used to predict the extent of a reaction, i.e. the degree of the disappearance of the reactants

Answer:

2). 79

Explanation:

sum up the number of electrons from configuration n you'll get the protons :)

The total number of protons in an atom with the electron configuration 2-8-18-32-18-1 is 79. Therefore, option 2 is correct.

A proton is a stable subatomic particle with the symbols p, H+, or 1H+ and an electric charge of +1 e. Its mass is 1,836 times greater than that of an electron and only slightly less than that of a neutron.

Although protons were once thought of as elementary particles, the Standard Model of particle physics now recognizes them as composite particles made up of three valence quarks, and they are grouped alongside neutrons as hadrons.

A proton is, for instance, the nucleus of a hydrogen atom or the H+ ion. No of the isotope, every hydrogen atom has one proton, every helium atom has two, every lithium atom has three, etc.

Thus, option 2 is correct.

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Answer:

A

Explanation:

Answer:

the ansewr would be A

Explanation:

took the quiz.

The phrase "the molarity of a solution" refers to the concentration of a solution and is defined as the number of moles of solute dissolved in one liter of solution. It is denoted by the symbol "M" and has units of moles per liter (mol/L).

Molarity is a commonly used unit of concentration in chemistry and is particularly useful in stoichiometry calculations, as it allows for the conversion of the volume of a solution to the number of moles of solute present.

For example, a solution with a molarity of 0.1 M contains 0.1 moles of solute per liter of solution. If the volume of the solution is known, it is possible to calculate the number of moles of solute present and use this information to determine other important parameters, such as the mass of the solute or the volume of another solution required for a reaction.

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An electron orbiting around the nucleus of an atom is in constant motion, much like a planet in orbit around a star. When the electron emits a photon and drops down to a lower energy state, it is said to "decay" or "fall back" to the ground state.

In this question, we need to find the number of revolutions the electron completes in the given time of 10 seconds. The number of revolutions the electron completes in the given time of 10 seconds is 7.63 x 10^15 revolutions. The formula for finding the number of revolutions is the ratio of time to the period of the orbit. We can calculate the period of the orbit by using the formula T = 2π√(mr³/F) where T is the period, m is the mass of the electron, r is the radius of the orbit, and F is the force of attraction between the electron and the nucleus. To find the radius of the orbit, we use the formula r³ = F/4π²mr²T², where T is the decay time of the electron, which is 10 seconds. We can then use the period of the orbit to calculate the number of revolutions using the formula above. We can do this using the formula:

\text{Number of revolutions} = \frac{\text{Time}}{\text{Period}}

where the period is the time taken for one complete revolution. Since we don't know the period, we need to find it using the information given in the question. We can do this using the formula for the time period of a circular orbit:

T = \frac{2\pi r}{v}

where T is the period, r is the radius of the orbit, and v is the velocity of the electron. The velocity of the electron can be found using the formula for the centripetal force:

F = \frac{mv^2}{r}

where F is the force of attraction between the electron and the nucleus, m is the mass of the electron, and r is the radius of the orbit. Rearranging this equation, we get:

v = \sqrt{\frac{F r}{m}}

Substituting this expression for v into the equation for T, we get:

T = \frac{2\pi r}{\sqrt{\frac{F r}{m}}} = 2\pi \sqrt{\frac{m r^3}{F}}

Substituting the given value of the decay time of the electron, which is 10 seconds, we get:

10 = 2\pi \sqrt{\frac{m r^3}{F}}

Squaring both sides and rearranging, we get:

r^3 = \frac{F}{4\pi^2 m} (10)^2

Dividing both sides by r, we get:

r^2 = \frac{F}{4\pi^2 m} (10)^2

Taking the square root of both sides, we get:

r = \sqrt{\frac{F}{4\pi^2 m} (10)^2} = 2.19 \times 10^{-10} \text{ m}

Now we can find the period of the orbit using the formula we derived earlier:

T = 2\pi \sqrt{\frac{m r^3}{F}} = 1.31 \times 10^{-15} \text{ s}

\Finally, we can use the formula for the number of revolutions to find the answer:

\text{Number of revolutions} = \frac{\text{Time}}{\text{Period}} = \frac{10}{1.31 \times 10^{-15}} = 7.63 \times 10^{15} \text{ rev}

In conclusion, the number of revolutions an electron completes in the given time of 10 seconds is 7.63 x 10^15 revolutions.

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Answer:

Explanation:

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

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

From the question

mass = 48 g

volume = 24 cm³

We have

\(density = \frac{48}{24} \\ \)

We have the final answer as

Hope this helps you

The regiochemistry of hydroboration/oxidation of alkenes is (a) Markovnikov.

The hydroboration/oxidation reaction follows Markovnikov's rule, which states that the electrophile (in this case, the boron atom) adds to the carbon atom of the double bond that has the greater number of hydrogen atoms attached to it. The regioselectivity of the reaction is determined by the relative stability of the carbocation intermediates formed during the reaction.

In hydroboration, the boron atom adds to the less substituted carbon atom of the double bond, leading to the formation of a boron-alkyl bond and a boron-hydrogen bond. Subsequently, in the oxidation step, the boron-alkyl bond is replaced with an alcohol group (-OH) while maintaining the regiochemistry established during hydroboration.

Therefore, the regiochemistry of hydroboration/oxidation of alkenes is Markovnikov, where the electrophilic addition occurs preferentially at the carbon atom of the double bond that has the greater number of hydrogen atoms attached to it.

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The percent yield of aspirin can be calculated by comparing the actual yield (the given amount of C9H8O4) to the theoretical yield (the amount of C9H8O4 that would be produced if the reaction went to completion).

First, we need to determine the theoretical yield of C9H8O4. We can do this by examining the balanced chemical equation and the molar masses of the reactants and products.

The balanced equation for the reaction can be written as:

2 C7H6O3 + C4H6O3 → C9H8O4 + H2O

The molar mass of C7H6O3 is approximately 138.12 g/mol, and the molar mass of C4H6O3 is approximately 102.09 g/mol. The molar mass of C9H8O4 (aspirin) is approximately 180.16 g/mol.

Now we can calculate the theoretical yield of C9H8O4:

Theoretical yield = (mass of C9H8O4 / molar mass of C9H8O4) * (2 moles of C7H6O3 / 1 mole of C9H8O4) * (molar mass of C9H8O4 / molar mass of C7H6O3) * (mass of C7H6O3 / molar mass of C7H6O3) + (mass of C9H8O4 / molar mass of C9H8O4) * (1 mole of C4H6O3 / 1 mole of C9H8O4) * (molar mass of C9H8O4 / molar mass of C4H6O3) * (mass of C4H6O3 / molar mass of C4H6O3)

Calculating the values:

Theoretical yield = (2.04 g / 180.16 g/mol) * (2 mol C7H6O3 / 1 mol C9H8O4) * (180.16 g/mol C9H8O4 / 138.12 g/mol C7H6O3) * (3.00 g C7H6O3 / 138.12 g/mol C7H6O3) + (2.04 g / 180.16 g/mol) * (1 mol C4H6O3 / 1 mol C9H8O4) * (180.16 g/mol C9H8O4 / 102.09 g/mol C4H6O3) * (5.40 g C4H6O3 / 102.09 g/mol C4H6O3)

Simplifying and calculating the result, we find the theoretical yield of C9H8O4 to be approximately X g.

Now, we can calculate the percent yield:

Percent yield = (actual yield / theoretical yield) * 100

Substituting the given values into the equation, we find:

Percent yield = (2.04 g / X g) * 100

Therefore, the percent yield of aspirin is approximately X%.

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Answer:

Bromine and mercury.

Explanation:

Most metals are solid at room temperature so Titanium is solid at room temperature. All elements above uranium are solid at room temperature. two elements are liquid at room temperature that is Bromine and mercury.

There are four possible types of orbital interactions when two atomic orbitals approach each other along a particular axis: bonding, antibonding, nonbonding, and destructive. These interactions are determined by the relative orientation and symmetry of the orbitals, as well as the energy difference between them.

1. Bonding: When two atomic orbitals approach each other along the same axis and have the same symmetry, they will form a bonding orbital. This orbital will have a lower energy than the individual orbitals, and will be more stable.
2. Antibonding: When two atomic orbitals approach each other along the same axis but have opposite symmetry, they will form an antibonding orbital. This orbital will have a higher energy than the individual orbitals, and will be less stable.
3. Nonbonding: When two atomic orbitals approach each other along a perpendicular axis, they will not interact and will remain as nonbonding orbitals. These orbitals will have the same energy as the individual orbitals.
4. Destructive: When two atomic orbitals approach each other along a perpendicular axis but have opposite symmetry, they will interact destructively and cancel each other out. This will result in no orbital being formed.

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None

it is a form of electromagnetic radiation, meaning it does not have any protons or neutrons

Answer:

Fe(C₂H₃O₂)₃,  Fe(CN)₃,  Pb(C₂H₃O₂)₄,  Pb(CN)₄

Explanation:

Cations (positively charged ions) can only form ionic bonds with anions (negatively charged ions). However, you can't just simply put one cation and one anion together to form a compound. Each compound needs to been neutral, or have an overall charge of 0. When cations and anions do not have charges that perfectly cancel, you need to modify the amount of each ion in the compound.

1.) Fe(C₂H₃O₂)₃

-----> Fe³⁺ and C₂H₃O₂⁻

-----> +3 + (-1) + (-1) + (-1) = 0

2.) Fe(CN)₃

-----> Fe³⁺ and CN⁻

-----> +3 + (-1) + (-1) + (-1) = 0

3.) Pb(C₂H₃O₂)₄

-----> Pb⁴⁺ and C₂H₃O₂⁻

-----> +4 + (-1) + (-1) + (-1) + (-1) = 0

4.) Pb(CN)₄

-----> Pb⁴⁺ and CN⁻

-----> +4 + (-1) + (-1) + (-1) + (-1) = 0

Answer:

B. The forces holding atoms together are stronger in a liquid than in

a gas

I hope that this helps!

The mole ratio of PbO2 to water in the given chemical reaction is 1:2.

According to the balanced chemical equation, for every 1 mole of PbO2 (lead dioxide), 2 moles of H2O (water) are produced. This can be seen from the coefficients in the equation, where the stoichiometric ratio is 1:2 between PbO2 and H2O.

The balanced equation represents a redox reaction that occurs within a car battery. In this reaction, lead (Pb) and lead dioxide (PbO2) react with sulfuric acid (H2SO4) to produce lead sulfate (PbSO4) and water (H2O). The mole ratio of reactants and products is determined by the coefficients in the balanced equation.

In this case, the coefficient of PbO2 is 1, indicating that 1 mole of PbO2 is consumed. The coefficient of H2O is 2, indicating that 2 moles of H2O are produced. Therefore, the mole ratio of PbO2 to water is 1:2, meaning that for every mole of PbO2, 2 moles of water are produced as a result of the chemical reaction.

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Ethyl trichloro acetate is significantly more reactive toward hydrolysis than ethyl acetate because of the polar nature of the functional group. Ethyl trichloro acetate is more reactive towards hydrolysis than ethyl acetate because of the polar nature of the functional group.

The reaction between an ester and water is known as hydrolysis. An ester is a derivative of carboxylic acid, which contains a carbonyl group that is linked to an alkyl or an aryl group through an oxygen atom. The hydrolysis of esters involves the addition of water to the ester's carbonyl group, resulting in the formation of a carboxylic acid and an alcohol.The reactivity of esters toward hydrolysis is determined by the alkyl or aryl group linked to the carbonyl group, as well as the functional group. The higher the electron density of the carbonyl group, the more reactive the ester will be toward hydrolysis.

Ethyl trichloro acetate has a more polar carbonyl group than ethyl acetate. Trichloro acetate has a chlorine atom that draws electron density away from the carbonyl group, reducing the electron density of the carbonyl group, making it more electrophilic and reactive towards nucleophiles like water. Therefore, ethyl trichloro acetate is significantly more reactive towards hydrolysis than ethyl acetate.

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The balanced equation of the copper (II) hydroxide precipitation reaction can be written as follows;Cu(OH)2 (s) → Cu2+ (aq) + 2 OH- (aq)We can express the solubility product constant (Ksp) for this reaction in a mathematical equation as follows;Ksp = [Cu2+] [OH-]2

The balanced equation of the copper (II) hydroxide precipitation reaction can be written as follows;Cu(OH)2 (s) → Cu2+ (aq) + 2 OH- (aq)We can express the solubility product constant (Ksp) for this reaction in a mathematical equation as follows;Ksp = [Cu2+] [OH-]2

To find the correct solubility product constant for the reaction shown above, we must first determine the balanced chemical equation for the reaction. After writing the balanced equation, we can then identify the reactants and products present in the chemical reaction.

After identifying the products and reactants present, we can then write the expression for the solubility product constant (Ksp) for the chemical reaction. From the chemical equation shown above, the correct solubility product constant for copper (II) hydroxide (Cu(OH)2) precipitation reaction is given by;Ksp = [Cu2+] [OH-]2The answer is a mathematical equation and so it is not possible to provide a value in this case. Thus, the correct solubility product constant for the reaction shown above is expressed as Ksp = [Cu2+] [OH-]2.

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The limiting reagent is NO and the mass of NO₃ formed in the reaction is 1.38 grams

The limiting reactant (or limiting reagent) is the reactant that gets consumed first in a chemical reaction and they determine the amount of product formed in a reaction.

2O₃ + 3NO → 3NO₃

From the balance equation 2 moles of trioxide reacted with 3 moles of nitrogen monoxide to produce 3 moles of nitric oxide.

molarity (O₃) = 7.40 / 48 = 0.15416666666 moles

molarity(NO) = 0.670 / 30.01 = 0.02232589136 moles

Therefore,

O₃  :  NO

 2  :  3

Therefore, the limiting reagent is NO. It will completely be used before the reaction comes to an end.

3(30.1) g of NO produces 3(62) g of NO₃

0.670 g of NO will produce ?

cross multiply

mass of NO₃ formed = 0.670 × 186 / 90.3 = 124.62 / 90.3 = 1.38006644518 = 1.38 grams.

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Answer:

The correct answer is - due to the movement of plates it is relocated.

Explanation:

Antarctica is a very cold part of the earth, it is so cold that there is no growth of trees or such vegetation. Even though there are no or less vegetation scientists found fossils of the trees.

It is relocated from the north where the conditions were warmer and easy for tree growth. It is then moved due to plate movements to the south pole. This is the reason behind the fossils scientist found.

The four pieces of the safety equipment present in each lab is the lab coats, the safety glasses, the disposable gloves, and the eyewash stations.

The four of important safety equipment should be present in the lab are as follows :

These are the safety equipment must be available in each of the lab. The Chemical spill kits contain the special absorbents , that is used to clean the chemicals and the other items for the cleaning up the chemical spills. We should properly clean our hand after the handling the chemicals.

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We know that temperature at which there would be the highest concentration of the products is 373 K

Temperature variations can affect the reaction's equilibrium position and, as a result, change the equilibrium constant (Keq) value. Whether a reaction is exothermic or endothermic affects the precise outcome.

We know that the higher the Keq would mean that the products would be more and this is going to happen when the Keq is 373 K as we can see from the table that has been shown in the question here displayed.

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Answer:

C: Ability to react. Sorry if its wrong!

Explanation:

Yes, the IR spectrum allow you to confirm that the structure of the product is a combination of the two reactants.

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Answer:

Photic Zone

Explanation:

The photic zone is the uppermost layer of the sea that recieves sunlight allowing phytoplankton to perform photosynthesis.

Answer:

I think it is Organ

Explanation:

After the completion of one half-life, half of the radioactive elements present at the beginning of the process would decay and convert into other elements. Therefore, the remaining half will be unchanged.

Half-life is defined as the time taken for half of the atoms in a given quantity of a radioactive sample to decay. It is a characteristic property of each radioactive nuclide. It is expressed in terms of seconds, minutes, hours, or years, depending on the specific nuclide involved.The half-life of copper is 63.546 hours. It means that if we start with 100 grams of copper, 50 grams of it will decay in the first 63.546 hours, leaving 50 grams of copper remaining.

In the next 63.546 hours, half of the remaining 50 grams of copper, or 25 grams, will decay. Thus, after 127.092 hours, we will be left with 25 grams of copper. The amount of radioactive copper left can be calculated using the formula N = N0 * (1/2)t/T where N is the final amount of radioactive copperN0 is the initial amount of radioactive copper t is the elapsed time T is the half-life of copper Substituting the values given in the question, N = 100 * (1/2)1/63.546N = 50 g Therefore, after the first half-life, 50 grams of radioactive copper would be left.

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Answer/ Explanation:  

(This was from research hope it helps!)

Similarity:

They are both are a kind of cell division.

Difference:

They are different in that mitosis produces two cells identical to the original, while meiosis produces cells that only have half the chromosomes of the original.