PLEASE HELP ILL MARK BRAINEST!! 40 POINTS!!

1. What is the chemical reaction shown above? What kind of reaction is this?

2. What is the difference between the two different reactions shown in the chart above? What can you determine about the role a catalyst plays in a reaction?

3. This chart above compares the reaction rate of a naturally occurring chemical reaction vs. the same reaction when an enzyme is involved.

a. Compare the differences between the two reactions, but also note what they have in common.

b. Explain the role the enzyme plays in the second reaction

c. Explain what the three bumps in the second reaction means and why the original reaction only has one bump.

Ranking the elements in order of increasing size, from smallest to largest:

F < O < N < C

Based on their position in the periodic table, we can rank the elements in order of increasing size from left to right:

Fluorine (F): Fluorine is the smallest element among the given options. It has the highest effective nuclear charge and the smallest atomic radius. Its valence electrons experience strong attraction from the nucleus, making it difficult to remove or add electrons.

Oxygen (O): Oxygen is the second smallest element among the given options. It has a slightly larger atomic radius than fluorine due to the addition of another electron shell. Its valence electrons experience a weaker attraction from the nucleus than fluorine.

Nitrogen (N): Nitrogen is larger than oxygen because it has one more electron shell. Its valence electrons experience even weaker attraction from the nucleus, making it easier to remove or add electrons.

Carbon (C): Carbon is the largest among the given options because it has the most electron shells. Its valence electrons experience the weakest attraction from the nucleus, making it the easiest to remove or add electrons.

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The neutral atom with a nuclear charge of +9 and a nuclear mass of 19 amu is fluorine-19. It has 10 neutrons and 9 electrons.

The atomic number of an element is equal to the number of protons in its nucleus. Therefore, if an atom has a nuclear charge of +9, it means it has 9 protons. The nuclear mass of an atom is the sum of its protons and neutrons. Since we know the nuclear mass of this atom is 19 amu, and it has 9 protons, it must have 10 neutrons (19 - 9 = 10).

To determine the number of electrons, we need to know the charge of the atom. Since it is a neutral atom, it has no net charge. This means the number of electrons must be equal to the number of protons, which is 9.

Therefore, the identity of the neutral atom is fluorine-19, with 9 protons, 10 neutrons, and 9 electrons.

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The calculate the minimum amount of energy needed to break the bond between two atoms, we first need to know the bond energy. Bond energy is the energy required to break a specific chemical bond between atoms. Unfortunately, without knowing the specific atoms or bond energy involved, we cannot calculate the exact minimum amount of energy needed in Joules.

The general idea of the process involved. Atoms are the smallest units of matter that make up all the elements and compounds. Kinetic energy refers to the energy of an object in motion. When two atoms are in a bound state, they are held together by a chemical bond. In order to break the bond between two atoms that are 0.1 nm apart and have no kinetic energy Determine the bond energy E for the specific chemical bond between the atoms. This value is usually given in units of Joules per mole (J/mol).  Convert the bond energy from Joules per mole to Joules per pair of atoms by dividing it by Avogadro's number 6.022 x 10^23. The resulting value will give you the minimum amount of energy that needs to be added to the system in order to break the bond between the two atoms. Keep in mind that this calculation requires knowledge of the specific atoms and bond energy.

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Answer:

Probably C but then again it may be D

I'm not for sure

Explanation:

The equation must have the following form to be balanced: 4CO2 + 2H2O = 2C2H2 + 5O2

S8: O2 = 1/8; S8 utilized = 240/8 = 30SO2 generated is equal to the number of sulphur molecules used, which is 240. Stoichiometry is the name given to the study of chemical processes in mathematics. Numerous calculations can be done, such as stoichiometry, which is most usually performed with moles but can also be done with masses and even percentages. Stoichiometric ratio A stoichiometric ratio is important when considering the interactions between specific elements or molecules. This exact ratio of reactant to product coefficients is necessary for a reaction to occur properly. Let's discuss some problems you can run across when you learn about stoichiometry. Chemical Equations in Balance Equations needing to be balanced is a fairly common stoichiometric issue type. This is an essential chemistry skill since a reaction can only occur if the ratio of reactants to products is correct.possess. Additionally, it provides an essential framework for organic chemistry. Balance the ensuing reply: _ CO2 + _ H2O C2H2 + _ O2 To be balanced, equations must have an equal number of each element on both sides of the reaction. Before balancing the oxygen, you can start by balancing the carbons and hydrogens. The equation must have the following form to be balanced: 4CO2 + 2H2O = 2C2H2 + 5O2

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The identity of the noble gas is the sample is Krypton

From the question, we are to determine the identity of the noble gas in the sample

From the ideal gas equation, we have that

PV = nRT

∴ n = PV / RT

Where P is the pressure

V is the volume

n is the number of moles

R is the gas constant

and T is the temperature

From the given information,

P = 678 mmHg = 0.892105 atm

V = 363 mL = 0.363 L

R = 0.08206 L.atm/mol.K

T = 35 °C = 35 + 273.15 K = 308.15 K

Putting the parameters into the equation, we get

n = (0.892105 × 0.363)/ (0.08206 × 308.15)

n = 0.0128 moles

Now, we will determine the Atomic mass of the sample

Using the formula,

Atomic = Mass / Number of moles

Atomic mass of the substance = 1.07 / 0.0128

Atomic mass of the substance = 83.6 amu

The noble gas with the closest atomic mass to this value is Krypton.

Molar mass of Krypton = 83.798 amu

Hence, the identity of the noble gas is the sample is Krypton

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Answer:

II and III

Explanation:

(second and third)

Matter is made of particles. Which can be best explained using the model of dissolving salt in water forming a salt solution.Thus option 2 is correct.

A solution is made of a solvent solute particles. A compound is made from the combination of one or more different atoms. Thus the basic unit of every substances is atoms. Atoms are made of subatomic particles electrons, protons and neutrons.

In a compound the basic units that its molecules can be called as the constituent particles of the compound. Similarly for a solution the constituent particles are solvent molecules and solute molecules.

When we dissolve salt in water, the salt molecules are combining with the solvent molecules and forming a compound. Hence, we are making a  compound by it constituent particles. Thus, option 2 is correct.

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The adage "They are no longer within Thermal Equilibrium" is accurate. Heating up is the iron.

When two objects experiencing thermal contact stop influencing one another's temperatures, thermal equilibrium has occurred.The two things are in thermal contact, for instance, if a carton warm milk from of the refrigerator is placed on the kitchen countertop.

Since water has a higher specific heat than other substances, it requires more energy to raise its temperature.This is why industries value water and why it serves as a coolant in the radiator of your car.

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The equilibrium for the dissolution of the weak base is ;(CH3)2NH(aq) + H2O(l) ⇄ (CH3)2NH3^+(aq) + OH^-(aq)

A weak base is one that does not ionize completely in solution. As such, a weak base will have a very low base dissociation constant Kb reflecting its minimal dissociation in solution.

The question is incomplete hence we are are unable to work out the equilibrium but in solution it will look like this;

(CH3)2NH(aq) + H2O(l) ⇄ (CH3)2NH3^+(aq) + OH^-(aq)

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The equilibrium for the reaction between (Ch₃)2NH of the weak base is (CH₃)2NH(aq) + H₂O(l) ⇄ (CH₃)2NH₃⁺(aq) + OH⁻(aq).

A weak base is one that does not completely dissociate in water.

It leaves only a small proportion of hydroxide ions and the concerned basic radical in the resulting aqueous solution.

A large proportion of dissociated base molecules.

Thus, the equilibrium for the reaction is (CH₃)2NH(aq) + H₂O(l) ⇄ (CH₃)2NH₃⁺(aq) + OH⁻(aq).

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Answer:

one generation to the next via DNA,

Explanation:

Heritable traits are known to be passed from one generation to the next via DNA, a molecule that encodes genetic information. ... Organisms inherit genetic material from their parents in the form of homologous chromosomes, containing a unique combination of DNA sequences that code for genes.

When using a properly stabilized balance, we should ensure that the

most accurate mass reading possible is gotten by doing the following:

A balance is an equipment which is used to measure the mass of objects.

It is best to measure the mass of the sample at room temperature to

prevent loss or reabsorption of water and to ensure air currents don't

affect the reading.

The side of the balance should be closed to prevent any form of

interference from the external environment.

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In the chemical reaction C2H2 + O2 CO2 + H2O, the compound C2H2 is being oxidized, while the compound O2 is being reduced. This is because, in an oxidation-reduction reaction, the substance that is being oxidized (in this case, C2H2) is losing electrons, while the substance that is being reduced (in this case, O2) is gaining electrons.

The pressure will be 139.92 kPa at a volume of 27.5 mL.

To answer this question, we will use Boyle's Law formula, which states that the product of the initial pressure (P1) and volume (V1) of a gas is equal to the product of the final pressure (P2) and volume (V2) when the temperature remains constant.


Step 1: Identify the initial pressure (P1), initial volume (V1), and final volume (V2).

P1 = 102.3 kPa
V1 = 37.5 mL
V2 = 27.5 mL

Step 2: Apply Boyle's Law formula, which is P1 * V1 = P2 * V2. We need to find the final pressure (P2).

102.3 kPa * 37.5 mL = P2 * 27.5 mL

Step 3: Solve for P2.

P2 = (102.3 kPa * 37.5 mL) / 27.5 mL

Step 4: Calculate the value of P2.

P2 ≈ 139.64 kPa

At 27.5 mL, the pressure of the gas will be approximately 139.64 kPa.

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Answer:

Approximately 3.375 moles.

Explanation:

1 mole of oxygen is about 15.9 grams. And if you divide 54 by 15.9, you get 3.375.

Answer:

Hydroelectricity, or hydroelectric power, is electricity produced from hydropower. In 2015, hydropower generated 16.6% of the world's total electricity and 70% of all renewable electricity, and was expected to increase by about 3.1% each year for the next 25 years.

Explanation:

Answer:

The electricity which is produced from flowing water or from the force exerted by the flowing water is called Hydroelectricity..

hope it is helpful to you

1. The creature is the Porcupine

2. He lived in Sri Lanka

3. The temple in Manish Gandir

4. It is in the excited state

5. Carbon can share four electrons

6. Alcohol is soluble in water.

Nascent hydrogen is the term used to describe hydrogen atoms or molecules that are created during specific chemical reactions and are in a highly reactive condition. The word "nascent" refers to something that is new or just created, implying that the hydrogen is in a highly reactive state right away.

Nascent hydrogen is often produced by processes like the electrolysis of water or the interaction of a metal with an acid.

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Answer:

The first ionization energies (I1) of the alkaline earth metals are not as low as the alkali metals. The alkaline earth metals are therefore less reactive than the alkali metals (Be and Mg are the least reactive of the alkaline earth metals). Several physical properties of these elements are compared in Table 7.7.

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{12.04 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{12.04}{6.02} \\ \)

We have the final answer as

Hope you this helps you

Sun-Bleached hair.

You can't exactly pass down piano skills, they have to be taught and also you can't just be born with strong muscles, they also have to develop over time. Height can't exactly be passed down because some parents are tall and their kids come out short. That leaves the only other option to be Sun-Bleached Hair (hair color).

Hope this helps and have a nice day.

-R3TR0 Z3R0

Answer:

B only

Explanation:

Using the VSEPR principle, the electron bond pairs and the lone pairs on the middle atom help us predict the structure of the molecule. The shape of a molecule is determined by the position of the nucleus and its electrons. The electrons and the nucleus settle in positions that minimize repulsion and maximize attraction.

The following factors determine the shape of a molecule Lone pair(s) on the central atom.

The correct answer is option B.

In chemistry, a lone pair refers to a pair of valence electrons that are not shared with every other atom in a covalent bond and is once in a while known as an unshared pair or non-bonding pair. Lone pairs are located inside the outermost electron shell of atoms.

A negatively charged carbon atom should right away let you know about a lone pair of electrons. In this situation, for the reason that carbon has the handiest 3 bonds and a poor fee, it should also have a lone pair. this can also be confirmed by means of the use of the method: FC= V – (N + B)

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List of metal or alloy that is best-suited include :

1) Block of an internal combustion engine is made of grey cast iron because it is ductile and hard enough to bear the loads.

2) Steam heat exchanger is made up of stainless steel material as it has high resistance to corrosion and has the capacity to bear high-temperature differences.

3) For jet engine turbofan blades, titanium alloys are being used because they can able to bear high pressure and high energy loads.

4) Tool steel is used to make drill bit material as it has high tensile and point strength.

5) Aluminum alloys are used for cryogenic applications as it is the best suited for work at low temperatures.

6) Magnesium is used for pyrotechnics as it gives works on the effect of heat, light, and gas.

Alloy, a metallic substance composed of two or more elements, as both a compound or a solution. The components of alloys are ordinarily themselves metals, though carbon, a nonmetal, is an essential constituent of metal.

Alloys, in trendy, are more potent and harder, less malleable, much less ductile, and greater corrosion-resistant than the alloy's predominant metallic.

An alloy is created with the aid of mixing metallic with another issue, both any other metal or a nonmetal substance. Metallic alloys are commonly made by means of melting the substances, mixing them collectively, after which letting them cool to room temperature, ensuing in a strong material.

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The slowest step in a reaction mechanism is known as the rate-determining step. The rate-determining step limits the overall rate and therefore determines the rate law for the overall reaction.

Overall reaction equation:

2NO (g) + O2(g) ---------> 2NO2(g)

Overall rate= k1 [NO]^2

Overall reaction equation:

2NO (g) + O2(g) ---------> 2NO2(g)

The overall reaction equation is obtained by adding the two equations. This now gives the actual overall equations when intermediates must have been cancelled out.

Since k1<<k2 which me as that the first step is much slower than the second step, then the first step is the rate determining step, being the slowest step in the non elementary reaction sequence.

Therefore overall rate;

Overall rate= k1 [NO]^2

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Answer:

It’s actually 130 degrees Celsius.

Explanation:

Answer:

precipitation occur

Explanation:

the solute do not dissolve in water

For the rocket engine a lean or excessively rich air-fuel ratio will lead to a compromise in the power output and ultimately the altitude the rocket will reach. Hence which ever the ratio the altitude is greatly affected, unless the ideal ratio is archived.

The air-fuel ratio is the ratio of the amount of air need to burn a part of fuel in a combustion cycle, the ratio is basically a compromise between fuel economy and  optimum power output.

For a gasoline engine for example, the ideal air-fuel mixture of 14.7 parts air to 1 part fuel.

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Answer:

Using the VSEPR theory, the electron bond pairs and lone pairs on the center atom will help us predict the shape of a molecule. The shape of a molecule is determined by the location of the nuclei and its electrons. The electrons and the nuclei settle into positions that minimize repulsion and maximize attraction.

Explanation:

this from the internet

sorry if im wrong

The lone pairs and bond pairs in a molecule are used to determine the location of electron pair geometry around the molecule.

The geometry of a molecule refers to  the shape of the molecule. The geometry of a molecule is determined by the valence shell electron pair repulsion theory.

Now, we know that both lone pairs and bond pairs in the molecule are used to determine the electron domain geometry around the central atom as they take the most appropriate orientations in space to minimize electron pair repulsions.

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In conclusion, when cyanide and water react in a proton transfer reaction, hydrogen cyanide and hydroxide are formed. One of the atoms involved in this reaction does not have a properly depicted valence.

Cyanide and water react in a proton transfer reaction to form hydrogen cyanide and hydroxide.

In this reaction, one of the atoms involved does not have a properly depicted valence.

To understand the reaction, let's break it down step-by-step:

1. The cyanide molecule (CN-) reacts with a water molecule (H2O).
2. In the reaction, a proton (H+) is transferred from the water molecule to the cyanide ion.
3. As a result, a hydrogen cyanide molecule (HCN) and a hydroxide ion (OH-) are formed.

It is important to note that one of the atoms in this reaction does not have a properly depicted valence.

This means that the atom may not have the correct number of valence electrons or may not be showing the correct valence state.

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Answer:

Archaeology is the study of the human past using material remains. These remains can be any objects that people created, modified, or used.

Explanation:

To complete the back titration of NH4F, a quantity of 50.0 mL of 0.500 M HCl is required.

The given chemical equation for the reaction between NH4F and NaOH is as follows: NH4F + NaOH → NaF + NH3 + H2OThe reaction between NH3 and HCl can be written as follows:NH3 + HCl → NH4ClTherefore, the total reaction can be written as follows:NH4F + NaOH + HCl → NaCl + NH4Cl + H2O

The amount of NaOH needed to react with NH4F is calculated as follows:

n = C × Vn = 1.00 M × 0.0250 Ln = 0.025 mol

The amount of NH3 generated is equal to the amount of NH4F that reacted, assuming that NH3 is fully driven off. The amount of HCl that reacts with NH3 can be calculated using the following equation:

n = C × Vn

= 0.025 molC

= n / VC = 0.025 mol / 0.500 MC

= 0.0500 LTherefore, 50.0 mL of 0.500 M HCl is needed for the back titration

To complete the back titration of NH4F, a quantity of 50.0 mL of 0.500 M HCl is required.

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