Which one shows possible sets of quantum numbers for the last three electrons of a N atom at ground state?
n l m s
2 0 -1 -1/2
2 0 0 -1/2
2 0 +1 -1/2
n l m s
2 1 -1 +1/2
2 1 0 +1/2
2 1 +1 +1/2
n l m s
2 0 -1 -1/2
2 0 0 -1/2
2 0 +1 +1/2
n l m s
3 1 +1 +1/2
3 1 0 +1/2
3 1 -1 +1/2

The heat that reaches Jerron in the room from the furnance does so by radiation

The term radiation has to do with a situation in which heat is able to move from one point to another without a material medium. We know that there are three basic modes of heat transfer and these are;

Conduction and convection both require a medium of propagation while radiation does not. The heat that reaches you in the room does so by radiation and this is because there is no material medium that carries the heat from the furnace to you.

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Answer:

that is Ph= -Log  ( 5.9  x10^-3)  =  2.2

the  solution is acidic since the  Ph is  less  than  7

Explanation:

The heat transfer coefficient (delta Q) divided by the temperature (T) results in the change in entropy, or delta S. If a physical process can be stopped, the environment's entropy and the system's entropy will both stay constant.

When a process is occurring, the entropy of an isolated system constantly rises or, in the extreme case of a reversible process, it stays constant (never decreasing). The entropy rise principle refers to this. Entropy generation cannot be negative, but entropy change within a system or its environment may.

As a result of all energy transfers resulting in the loss of some useful energy, the entropy of the cosmos rises with each energy transfer or transformation. Entropy is a metric for determining how random and chaotic a system is.

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Correct Question:

What is the change in entropy for the process where all the energy is transferred from the hot object (AB) to the cold object (CD)

Television technology has evolved from the process of analogue to the process of digital signal transmission.

We know that technology has to do with the correct application of the scientific knowledge so as to solve practical problems. The chemical engineer is ultimately involved in the process of problem solving the society.

The television technology has evolved from the analogue transmission of the signals when I was a child to the digital transmission of signals thus most of the television stations now do digital transmission.

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Answer:

ecosystem

Ecosystems include both biotic and abiotic factors

Answer:

The particle theory of matter is a model that describes the arrangement and movement of particles in a substance. The model is used to explain the physical properties of solids, liquids and gases. Particle arrangement and movement

Explanation:

The final product of the reaction is t-pentyl chloride.

The reaction of t-pentyl alcohol with concentrated hydrochloric acid proceeds via an S_N1 mechanism, which can be described as follows:

Step 1: Protonation of the alcohol

The concentrated hydrochloric acid protonates the hydroxyl group of t-pentyl alcohol to form a oxonium ion intermediate, which is a better leaving group than the hydroxyl group.

t-pentyl alcohol + HCl → t-pentyl oxonium ion + Cl^-

Step 2: Formation of the carbocation

The oxonium ion intermediate loses a water molecule to form a t-pentyl carbocation intermediate, which is stabilized by the electron-donating effect of the three methyl groups.

t-pentyl oxonium ion → t-pentyl carbocation + H₂O

Step 3: Deprotonation of the chloride ion

A chloride ion acts as a nucleophile and attacks the carbocation, forming a new bond and releasing H<sup>+<sup> ion.

t-pentyl carbocation + Cl^- → t-pentyl chloride + HCl

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Answer:

Yes

Explanation:

Because they both react with something

Answer:

I think it is B

Explanation:

Both prokaryotes and eukaryotes have all of those things except for organelles, which only eukaryotes have (also prokaryotes are smaller not eukaryotes)

Answer:

A. 8600 J

General Formulas and Concepts:

Thermochemistry

Specific Heat Formula: q = mcΔT

Explanation:

Step 1: Define

[Given] m = 1600 g

[Given] ΔT = 214 °C - 202 °C = 12 °C

[Given] c = 0.450 J/g °C

[Solve] q

Step 2: Find Heat

Step 3: Check

Follow sig fig rules and round. We are given 2 sig figs as our lowest.

8640 J ≈ 8600 J

Topic: AP Chemistry

Unit: Thermodynamics

Answer:

Brainliest Please !!!!!

Part 1:  Reasons young workers don't report injuries. Young workers are at an increased risk of workplace accidents and injuries due to their inexperience, lack of training, and physical and emotional immaturity. However, young workers are less likely to report accidents or injuries than older workers.

Some of the reasons for this are:

1. Fear of reprisal: Young workers fear being blamed or reprimanded for an accident or injury, which may result in termination or the loss of opportunities for advancement. They are afraid to speak up and report accidents, believing that they will be punished for their mistakes.

2. Lack of knowledge: Young workers are not always aware of their rights and responsibilities, as well as the procedures for reporting accidents and injuries in the workplace. They may not know who to report to or how to fill out an incident report.

Part 2:  Identifying the hazard in the picture attached

The hazard in the attached picture is the use of improper PPE (Personal Protective Equipment). The worker in the picture is using a grinder to cut metal without using any kind of eye protection. Sparks and metal shavings can fly into the eyes of the worker, causing eye damage or even blindness.    

The worker is also not wearing gloves, which exposes their hands to cuts, abrasions, or burns. The worker should wear appropriate PPE such as safety goggles, gloves, and a face shield while using a grinder to minimize the risk of injury or accidents.

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The moles of oxygen required to completely react with 1-mole acetylene is 2.5 mol.

The moles of reactant and product in a chemical reaction to the whole number ratio is given by the stoichiometric coefficient of the balanced chemical equation.

The balanced chemical equation for the reaction is :

\(\rm 2\;C_2H_2\;+\;5\;O_2\;\to\;4\;CO_2\;+\;2\;H_2O\)

From the balanced chemical equation, the 2 moles of acetylene react with 5 moles of oxygen.

The moles of oxygen react with 1 mole of acetylene are:

\(\rm 2\;mol\;C_H_2=5\;mol\;O_2\\\\1\;mol\;C_2H_2=\dfrac{5}{2}\;\times\;1\;mol\;O_2\\\\ 1\;mol\;C_2H_2=2.5\;mol\;O_2\)

The moles of oxygen required to completely react with 1-mole acetylene is 2.5 mol.

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Answer:

thank you :')

Explanation:

Answer:

Aw and thank you!

Explanation:

Even though you said I am loved, you are loved very much too! Don't you ever forget that! No matter what happens and how you feel remember that you are loved and mean so much to people. What you said to me means a lot to me! Thank you! YOU ARE LOVED!!

Answer:

Surface area

Explanation:

The rate of a chemical reaction is increased when the surface area of a solid reactant is increased. This can be done by cutting the substance into small pieces, or by grinding it into a powder. If the surface area of a reactant is increased, it implies more particles are exposed to the other reactant.

When a seltzer tablet is ground into powder, the idea is to expose more of its surface to the other reactant. Since rate reaction depends on effective collision between reactants, more exposed particles implies a greater degree of collision between reactants and a faster rate of reaction.

Answer:

the answer is the second option got it right so do worry

Explanation:

hope this helps

Answer:

go for what ever brother GUESS / imagine this gate brainlyist for literally doing nothing.

Explanation:

Answer:

si. en los atomos los protones y los electrones llevan cargas electricas

Answer:

The forensic scientist must be able to tell the difference between the substances.

Explanation:

It is important for forensic scientists to be able to identify particular drugs so they have evidence for the case that a certain drug was present.

The goal of forensic drug chemistry is to determine whether the material submitted contains an illegal substance.

Answer

ΔT = 3.78x10^-3 °C

Explanation

Given:

Energy (Q) = 12.0275 J

Mass of water = 760.6 g

We know the specific heat capacity of water = 4.182 J/g °C

Required: The change in temperature

Solution

Q = m x Cp x ΔT

ΔT = Q/m x Cp

ΔT = 12.0275 J/(760.0 g x 4.182 J/g °C)

ΔT = 3.78x10^-3 °C (or 0.00378 °C)

Answer:

can hydrogen be used to make oxygen? and how do you know?

Explanation: yes because H1 is water

Answer:

see the answer

Explanation:

Yes hydrogen can be used to make oxygen

because H1 is water

Answer: The nebular theory is an explanation for the formation of solar systems.

Explanation:

The minimum energy needed by the photons to react with silver bromide in the film is approximately 57.9 kJ/mol. Then, the wavelength is 206 nm.

Wavelength of a wave is the distance between two consecutive crests or troughs of the wave.

To find the wavelength of the energy in nm, we can use the equation:

E = hc/λ

where E is the energy in joules, h is Planck's constant (6.626 x 10⁻³⁴ J s), c is the speed of light (2.998 x 10⁸ m/s), and λ is the wavelength in meters.

First, we need to convert the energy from kJ/mol to J/photon:

57.9 kJ/mol = 57.9 x 1000 J/mol / 6.02 x 10²³ mol^-1

= 9.626 x 10²⁰ J/photon

Now we can use the equation above to find the wavelength:

9.626 x 10²⁰ J/photon = (6.626 x 10⁻³⁴ J s)(2.998 x 10⁸ m/s) / λ

Solving for λ, we get:

λ = hc/E = (6.626 x 10⁻³⁴ J s)(2.998 x 10^8 m/s) / 9.626 x 10⁻²⁰J/photon

  = 2.06 x 10⁻⁷ m

Finally, we convert the wavelength from meters to nanometers:

λ = 2.06 x 10⁻⁷ m x (10⁻⁹ nm/m)

  = 206 nm

Therefore, the wavelength of the energy needed to react with silver bromide in 35 mm photographic film is approximately 206 nm.

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Answer:

element with same number of protons but different number of neutrons

brainliest plzzzzz

Answer:

When table salt is added to water the resulting solution has a higher boiling point than the water did by itself. The ions form an attraction with the solvent particles that then prevent the water molecules from going into the gas phase. Therefore, the salt-water solution will not boil at 100oC

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Therefore, Student C had the purest crystals and the correct product

Melting point determination is a useful technique for checking the purity and identity of the crystalline solid. The melting point of a compound is the temperature range where the solid changes to a liquid. The literature value for the melting point of a product is an important property to know, and it can be compared to the values obtained experimentally.

The melting point of the compound is an important factor in determining its purity. A pure compound has a sharp melting point, whereas an impure compound has a broad melting range that is lower than the pure melting point.

The student with the purest crystals and the correct product was Student C.

Student A's melting point range is too low, which indicates that the compound is impure.

The melting point range of Student B is too high, which indicates that the compound is impure.

The melting point range of Student D is close to the literature value, but it is still too broad, which indicates that the compound is impure.

Student C's melting point range is close to the literature value, and it is relatively sharp, which indicates that the compound is pure.

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Answer:

can be replaced in a short amount of time

Explanation:

done

CIF will tend to increase as the reaction proceeds toward equilibrium.

Given that Kp is equal to 20 at 2500 K, we can calculate the initial concentrations of CIF using the ideal gas law. Let's assume the initial volume is 1 liter for simplicity.

For Cl2:

P(Cl2) = 0.18 atm

n(Cl2) = P(Cl2) * V / (RT) = 0.18 mol

For F2:

P(F2) = 0.31 atm

n(F2) = P(F2) * V / (RT) = 0.31 mol

For CIF:

P(CIF) = 0.92 atm

n(CIF) = P(CIF) * V / (RT) = 0.92 mol

Based on the balanced equation, for every 1 mole of CIF, 1 mole of Cl2 and 1 mole of F2 are consumed. Therefore, the initial moles of CIF are equal to the initial moles of Cl2 and F2.

Since the initial concentrations of CIF, Cl2, and F2 are the same, and the reaction is not at equilibrium, we can conclude that CIF will tend to increase as the reaction proceeds toward equilibrium. This is because the reaction favors the formation of CIF, as indicated by the value of Kp. As CIF forms, the concentrations of Cl2 and F2 decrease, driving the reaction in the forward direction to restore equilibrium.

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Explanation:

Carbohydrates provide 4 calories per gram, protein provides 4 calories per gram, and fat provides 9 calories per gram.

Ref www.nal.usda.gov

The correct answer is A. Based on the given options, amino acids can be classified into different categories based on the properties of their R groups.

it are organic compounds serve as the building blocks of proteins. They consist of a central carbon atom (alpha carbon) bonded to an amino group (-NH2), a carboxyl group (-COOH), a hydrogen atom, and an R group (side chain) that varies among different amino acids.

classified R groups amino acids. The given options represent different classifications:

A. Hydrophobic amino acids with nonpolar R groups: These amino acids have R groups that are nonpolar and do not readily interact with water molecules. They tend to be hydrophobic (water-fearing) and are often found in the interior of proteins away from water.

B. Polar amino acids with neutral R groups but the charge is not evenly distributed: These amino acids have polar R groups that contain functional groups such as hydroxyl (-OH) or amine (-NH2). Although they are polar, the charge is not evenly distributed within the R group.

C. Positively charged amino acids with R groups that have positive charge at physiological pH: These amino acids have R groups that contain positively charged functional groups, such as amino groups (-NH3+), at physiological pH (around 7.4).

D. Negatively charged amino acids with R groups that have a negative charge at physiological pH: These amino acids have R groups that contain negatively charged functional groups, such as carboxylate groups (-COO-), at physiological pH.

Based on the given options, amino acids can be classified into different categories based on the properties of their R groups. Amino acids with hydrophobic nonpolar R groups are classified as hydrophobic amino acids.

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