help me plsssss ))):

Electron groups around a central atom tend to spread out as much as possible because of the electron-electron repulsion principle, also known as the Pauli exclusion principle. According to this principle, electrons in an atom tend to occupy different energy levels, or orbitals, to minimize the repulsive interactions between them.

When electron groups are spread out as much as possible, the energy of the system is minimized, and the atoms are more stable. This is because the repulsive forces between the electrons are reduced when they are farther apart. This is known as the octet rule, which states that atoms tend to gain or lose electrons in such a way as to have eight valence electrons in their outermost shell, which is the most stable configuration.

Learn more about electrons, here https://brainly.com/question/1255220

#SPJ4

The binding of the amino acid in aminoacyl-tRNA involves the formation of an ester bond.  Option b

Aminoacyl-tRNA is a complex molecule that plays a crucial role in protein synthesis. It consists of a tRNA molecule covalently linked to an amino acid. The amino acid is attached to the 3' end of the tRNA molecule through an ester bond.

An ester bond is formed between the carboxyl group (-COOH) of the amino acid and the hydroxyl group (-OH) of the ribose sugar at the 3' end of the tRNA molecule. This ester bond is also referred to as an ester linkage. The formation of the ester bond is catalyzed by the enzyme aminoacyl-tRNA synthetase.

The ester bond in aminoacyl-tRNA is essential for protein synthesis. During translation, the aminoacyl-tRNA molecule carries the specific amino acid to the ribosome, where it is incorporated into the growing polypeptide chain. The ester bond is later hydrolyzed, releasing the amino acid for further use in protein synthesis.

In summary, the binding of the amino acid in aminoacyl-tRNA involves the formation of an ester bond between the carboxyl group of the amino acid and the hydroxyl group of the ribose sugar in the tRNA molecule.

Option b

For more such question on amino acid visit:

https://brainly.com/question/30265108

#SPJ8

Answer:

0.01679

Explanation:

1 ml = 0.0001 dal

167.9×0.0001 = 0.01679

The units like milliliter [mL] and dekaliter [daL] are used to measure the volume of the substance. 167.9mL is converted into daL and is equivalent to 0.01679 daL.

Units of measurement are used to denote the physical quantities of the substances and are converted into various units of the metric system to express the same quantity but in various expressions. They are the magnitudes that express the various parameters.

The units milliliter [mL] and dekaliter [daL] are used to express the smaller physical quantities of the volume. They are the derived units that arrive from the fundamental units. The units from milliliter [mL] to dekaliter [daL] are converted as:

1 mL = 0.0001 daL

Given,

Volume = 167.9mL

The units are converted as:

1 mL = 0.0001 daL

167.9mL =  167.9mL × 0.0001 daL

= 0.01679

Therefore, 0.01679 daL is the volume.

Learn more about units, here:

https://brainly.com/question/11543684

#SPJ2

Answer:

C. Nitrogen and Phosphorous.

Explanation:

According to the balanced equation, 31.7 grams of nitrogen gas (N₂) reacting with excess hydrogen gas (H₂) will produce a 2.264 moles of ammonia gas (NH₃).

To determine the moles of ammonia formed, we need to convert the given mass of nitrogen gas to moles using its molar mass and the stoichiometric ratio of the balanced equation.

The molar mass of nitrogen gas (N₂) is 28.02 g/mol. To calculate the number of moles of nitrogen gas, we divide the given mass by its molar mass:

31.7 g / 28.02 g/mol = 1.132 mol

According to the stoichiometry of the balanced equation, the ratio between nitrogen gas and ammonia gas is 1:2. This means that for every 1 mole of nitrogen gas, 2 moles of ammonia gas are produced.

Therefore, using the stoichiometric ratio, we can determine the moles of ammonia formed:

1.132 mol N₂ * (2 mol NH₃ / 1 mol N₂) = 2.264 mol NH₃

Thus, upon the complete reaction of 31.7 grams of nitrogen gas with excess hydrogen gas, 2.264 moles of ammonia gas will be formed.

Learn more about balanced equation:

brainly.com/question/31242898

#SPJ11

The statement that is true regarding beta particles is D. "Beta-particle formation is accompanied by the conversion of a neutron into a proton."

Beta particles are high-energy electrons or positrons that are emitted during certain types of radioactive decay processes. Beta decay occurs when an unstable nucleus undergoes a transformation in order to reach a more stable state. In beta-minus decay, a neutron in the nucleus is converted into a proton, releasing a beta particle (high-energy electron) and an antineutrino. The conversion of a neutron into a proton increases the atomic number of the nucleus by one.

The statement that beta particles have a mass number of 0 is incorrect. Beta particles do have mass, although they are much less massive compared to protons or neutrons. Similarly, the statement that beta particles have an atomic number of 1 is incorrect. The atomic number refers to the number of protons in an atom, and beta particles are not atoms themselves. Beta particles are high-energy particles emitted from the nucleus during beta decay.

Therefore, the only true statement regarding beta particles is that their formation is accompanied by the conversion of a neutron into a proton, which leads to an increase in the atomic number of the nucleus. Therefore, Option D is correct.

which of the statements regarding beta particles are true?

A. beta particles have a mass number of 0.

B. beta-particle formation is accompanied by the conversion of a proton into a neutron.

C. beta particles have an atomic number of 1.

D. beta-particle formation is accompanied by the conversion of a neutron into a proton.

Know more about beta particles here:

https://brainly.com/question/24312947

#SPJ8

The percent composition of the carbon in the C₆H₁₂O₆ is 40 %.

The chemical compound is  C₆H₁₂O₆.

The molar mass of the compound  C₆H₁₂O₆ = 180 g/mol

The mass of the carbon = 12 g

The percent composition is as follows :

Percent composition of the carbon = ( mass of the carbon / total mass of the compound ) × 100 %

Percent composition of the carbon = ( 72 / 180 ) × 100 %

Percent composition of the carbon  = 40 %

Thus the percentage composition if the carbon is 40 percent in the chemical compound  C₆H₁₂O₆ that is glucose.

To learn  more about percent composition here

https://brainly.com/question/30489347

#SPJ4

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 25 \times {2.5}^{2} \\ = 12.5 \times 6.25 \\ = 78.125 \: \: \: \: \: \: \: \: \)

We have the final answer as

Hope this helps you

Answer:

its valency must be 3

hope it helps.

Answer: -3

Explanation: an element with atomic number of 15 is Phosphorus the Electronic configuration of phosphorous is 2, 8, 5. It has 5 electrons in its last orbit which can be completely filled by accepting 3 electrons.

Explanations:

Question 1: Lithium in 20.00+ g is C. or D., but 25.00+ g is D. which means this is the correct option.

I am unsure of Question 2. I don't think it is mole though.

Question 3: Boron in 25.00-30.00 g is B. or D., but 25.00 g would be C.

Question 4: 2.393 x 1024 atoms of Oxygen is 63.58 mole O. I don't know for sure, but I think this is correct.

I am NOT professional. There is a chance I am incorrect. Please reply to me if I've made a mistake.

The atomic weight of one carbon atom = 12 amu

Mass of 1 mole of carbon atoms = 1 × atomic weight of one carbon

= 12 gm

Since we already know that the atomic mass is specified for one mole of the atom, we may get the mass of one atom by dividing the mass by Avogadro's number.

The mass of one atom of carbon is = Atomic mass/Avogadro number

= 12g/6.022×10^23

= 126.022×10^−23g

= 1.9933×10^−23g

Hence, the mass of 1 carbon atom is 1.9933×10^−23grams

Now,

Mass of 8.99 x 10^24 atoms = (8.99 x 10^24) x (mass of 1 carbon atom)

⇒ Mass of 8.99 x 10^24 atoms = 8.99 x 10^24 x 1.9933×10^−23grams

⇒ Mass of 8.99 x 10^24 atoms = 17.919767 x 10

⇒ Mass of 8.99 x 10^24 atoms = 179.2 g (approx.)

To learn more about Mole concept, refer to:

https://brainly.com/question/22540912

#SPJ13

(A) The concentration of S in chloroform is 0.088 M.

(B) The quotient is  0.695.

(a) To calculate the concentration of S in chloroform, use the partition coefficient:
Partition coefficient = [S(chloroform)] / [S(water)]
4.0 = [S(chloroform)] / 0.022
Now, solve for the concentration of S in chloroform:
[S(chloroform)] = 4.0 * 0.022 M
[S(chloroform)] = 0.088 M

(b) To find the quotient (mol S in chloroform)/(mol S in water), first calculate the moles of S in each phase:

Moles of S in water = [S(water)] * volume of water
Moles of S in water = 0.022 M * 0.069 L (convert mL to L)
Moles of S in water = 0.001518 mol

Moles of S in chloroform = [S(chloroform)] * volume of chloroform
Moles of S in chloroform = 0.088 M * 0.012 L (convert mL to L)
Moles of S in chloroform = 0.001056 mol

Now, calculate the quotient:
Quotient = (mol S in chloroform) / (mol S in water)
Quotient = 0.001056 mol / 0.001518 mol
Quotient = 0.695

To learn more about "partition coefficient", visit: https://brainly.com/question/13184491

#SPJ11

Answer:

The reactants of photosynthesis are Carbon Dioxide and water. The products are Glucose (or starch/sugar) and Oxygen. The autotroph uses light energy from the sun in order to complete this process. In the formula, the arrow is the light energy.

Explanation:

Answer:

I've inserted an image.

Explanation:

Hope this helps!

(:

Answer:

Water-> Brine-> Kerosene

Explanation:

Answer:

Brine, water, kerosine

Explanation:

Brine is the densest.

Kerosine Is less dense than water.

Answer:

C

Explanation:

USA Test prep

The aluminum metal has atoms with greater attraction than the atoms in nitrogen gas. Hence option C is correct.

Metals are defined as a substance that appears shiny when freshly manufactured, polished, or broken, and conducts electricity and heat rather well. A metal element is an element with metallic bonding and positive ions. The periodic table contains mostly metals. The earth's crust is where most pure metals are found. The majority of the planet's iron mass, which makes up over a third of its mass, is located in its core.

Under a specific set of circumstances, a substance's state of matter is controlled by its molecular qualities rather than the other way around. While relatively weak intermolecular interactions promote the gaseous state, strong intermolecular forces favor a condensed form of matter (liquid or solid).

Thus, the aluminum metal has atoms with greater attraction than the atoms in nitrogen gas. Hence option C is correct.

To learn more about metals, refer to the link below:

https://brainly.com/question/28650063

#SPJ6

Answer:

Explanation:

The percent composition of carbon in acetic acid is 40.002%.

Answer:

ecological succession

Explanation:

Answer:

ecological succession

Explanation:

I did this before

In the endpoint when the indicator changes color it gives the information that the acid is neutralized by the base.

Titration is also known as titrimetry is a technique where a solution of known concentration is used to calculate the concentration of the unknown solution. Titration is a laboratory technique.

The point at which the indicator changes the color is known as Endpoint.

Thus from the above conclusion we can say that In the endpoint when the indicator changes color it gives the information that the acid is neutralized by the base.

Learn more about the Titration here: https://brainly.com/question/186765

#SPJ1

Answer:

0.326 mol. is the answer.

Explanation:

No. of moles = Volume (L) / Volume at STP

N = 7.3 / 22.4

N = 0.326 moles

Answer:

Decomposition

Explanation:

A decomposition reaction is a type of reaction in which a compound is broken down into its constituent elements sometimes under the influence of heat.

When  iron (III) hydroxide is heated,new products are formed according to the equation; 2Fe(OH)3 -----------> Fe2O3 + 3H2O.

This is a thermal decomposition reaction.

DART sent images from a camera to record its progress. The collision and the results of the collision were recorded by the International Space Station.

DART stands for Double Asteroid Redirection Test. The investigative team of the (DART) mission indicates that the spacecraft's kinetic contact with its target asteroid, Dimorphos, successfully changed the asteroid's orbit.

Asteroid is a small planet in our Solar System. Asteroids range in size and shape from 1-meter boulders to a dwarf planet almost 1000 kilometers in diameter; they are stony, metallic, or ice worlds with no atmosphere.

Learn more about Space Station:
https://brainly.com/question/13033832
#SPJ1

Answer: Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

Explanation:

Glycine is the N-terminal residue and Serine is the C-terminal residue.

From the given polypeptide Gly-Tyr-Gly-Phe-Met-Ser, the correct statements are:

Glycine is the N-terminal residue: This is correct because glycine is the first amino acid in the sequence, making it the N-terminal residue.

Serine is the C-terminal residue: This is correct because serine is the last amino acid in the sequence, making it the C-terminal residue.

Methionine is the N-terminal residue: This statement is incorrect. Although methionine is present in the sequence,

it is not the first amino acid. Glycine is the first amino acid, so it is the N-terminal residue.

Therefore, the correct statements are:

Glycine is the N-terminal residue.

Serine is the C-terminal residue.

Learn more about Glycine from the given link

https://brainly.com/question/170426

#SPJ11  

Answer:

B. The rate of mitosis is much greater than the rate of apoptosis

Answer:

2.5 billion years

Explanation:

Answer:

The relation between individual and society is very close. Essentially, “society” is the regularities, customs and ground rules of antihuman behavior. These practices are tremendously important to know how humans act and interact with each other. Society does not exist independently without individual.

Explanation:

Answer:

In every work area

1-ethoxybut-2-yne is the desired product of synthesis. using the principles of retrosynthetic design, compounds a and b are attached.

The SN2 reaction process needs a nucleophile attack from the carbon atom's contrary side. As a result, the product moves into the stereochemical location that the departing group had previously held. This is referred to as configuration inversion. A good illustration of a stereospecific reaction, in which several stereoisomers react to produce various stereoisomers of the result, is the SN2 reaction. Additionally, the most typical instance of Walden inversion occurs in the SN2 reaction, in which the configuration of an asymmetric carbon atom is reversed.

In the first step of the given reaction, the SN2 reaction between the compound A and NaCH₂CH₃ gives the product B. In the second step after deprotonation of aikyne, it reacts with CH₃Br to give 1-ethoxybut-2-yne.

Complete question and structures are attached.

You can also learn about  SN2 reaction  from the following question:

https://brainly.com/question/29589832

#SPJ4

The balanced chemical equation is:

0.5C7H16 + O2 → 0.5CO2 + H2O

For balancing the chemical equation C7H16 + O2 → CO2 + H2O, we can use linear algebraic techniques. We need to determine the coefficients that balance the number of atoms on both sides of the equation.

Let's denote the coefficients for C7H16, O2, CO2, and H2O as a, b, c, and d, respectively.

The balanced chemical equation can be written as:

aC7H16 + bO2 → cCO2 + dH2O

To balance the carbon (C) atoms, we have:

7a = c (Equation 1)

To balance the hydrogen (H) atoms, we have:

16a = 2d (Equation 2)

To balance the oxygen (O) atoms, we have:

2b = 2c + d (Equation 3)

We have three equations (Equations 1, 2, and 3) and four unknowns (a, b, c, d). To solve this system of equations, we can write it in matrix form and find the solution using linear algebraic techniques.

The augmented matrix for the system of equations is:

[ 7 0 -1 0 | 0 ]

[ 0 0 0 -2 | 0 ]

[ 0 -2 2 -1 | 0 ]

By performing row operations to row-reduce the augmented matrix, we can obtain the solution:

[ 1 0 -0.5 0 ]

[ 0 1 -1 -0.5 ]

[ 0 0 0 0 ]

The solution to the system of equations is:

a = 0.5

b = 1

c = 0.5

d = 1

Putting the values of a,b,c, and d we get the balanced chemical equation as:

0.5C7H16 + O2 → 0.5CO2 + H2O

To learn more about balancing, visit:

https://brainly.com/question/31242898

#SPJ11