help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Answer:

[Ne] 3s² 3p³

Explanation:

this is the answer and give me likes and vote for me

An electric field travels away from a positive charge and toward a negative charge.

Electric field is the region of space where the impact of electric force is felt.

The electrostatic field is always directed away from positive charges and toward negative charges, and, field lines must go away from positive charges and toward negative ones.

Thus, an electric field travels away from a positive charge and toward a negative charge.

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Refrigeration will prevent bacterial growth which may result in uricase production and breakdown of uric acid in the sample.

An enzyme called uricase is responsible for catalyzing the change of uric acid into allantoin. Your body excretes uric acid, an acidic waste product, through urine. It is a typical result of the digestion of purine-rich meals.

Only media containing uric acid, allantoin, or allantoate as the primary or only source of carbon, nitrogen, and energy support the growth of the bacteria Bacillus fastidious. Raw extract of cells cultivated on uric acid had significant amounts of uricase.

Alcaligenes eutrophus, Pseudomonas aeruginosa, and Micrococcus denitrificans all displayed increased uricase activity after being placed in conditions containing uric acid, according to Kaltwasser. The ability of microorganisms to degrade uric acid and to use it for growth is an inducible property of various bacteria. Uricases of Bacillus fastidious and of Aspergillus nidulans were reported to be induced by uric acid.

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The molecule expand to relieve steric strain before undergoing torsion to a non-planar structure in order to have several resonating structures.

It should be noted that a molecule simply mean the group of atoms that are bonded together that represents the smallest fundamental unit if the chemical compound.

It should be noted that structures containing fused benzene rings have extensive conjugation. Due to this, they can undergo resonance.

This is vital in decreasing the overall energy of the molecule and helps increase its stability. When there's a change in torsion angle to relieve the steric strain, the molecule won't be planar, hence, the energy will increase and the stability will reduce.

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Answer:

- 0.57138096 M

- 0.571mol

- 0.571 M NaHCO3

- 0.571 mol/NaHCO3

(these are just different ways to identify the units but they all work and mean the same thing)

Explanation:

- molarity is measured by the ratio of the moles of a solute per liters of a solution

- the formula for molarity is: [tex]M = \frac{mol (s) solute}{L solution}[/tex]__________________________________________________________

- first, you need to convert 250mL to L so, [tex]250/1000=0.25[/tex]

- when it comes to converting g to mol you can do it in a separate equation but i prefer to do it all in one equation

__________________________________________________________

- so the equation for this specific problem would be set up like this:[tex]\frac{12.0g}{.25L} x \frac{1mol}{84.007 g} = x[/tex]

__________________________________________________________

- now to actually solve it:

[tex]\frac{12.0g}{.25L} x \frac{1mol}{84.007 g} = \frac{12.0}{21.00175} = 0.57138096(or)/0.571mol/0.571 M NaHCO3/(0.571 mol/NaHCO3)[/tex]

hope this helps :)

Answer:

I thinks is B

Explanation:

they just look harmful

I also researched and it says  its harmful and causes sickness and death

Answer:

c. because it lacks oxygen which might support life of the bacteria

Answer:

Paper Chromatography

Explanation:

Most leaves are green due to chlorophyll pigments of different types like chlorophyll A, chlorophyll B, etc. All these pigments will be seperated according to their molecular composition. So, the correct option is 'Paper Chromatography'.

An inert gas is used as an electrical insulator.

Sulfur hexafluoride (SF 6)) is a very potent and long-lasting greenhouse gas that is primarily used as an electrical insulator and arc suppressor. It is non-flammable, non-toxic, inorganic, colorless, and odorless.

The sulfur atom's steric hindrance plays a significant role in the inertness of SF6, whereas SeF 6 and other heavieSFroup 16 equivalents are more reactive than SF 6 due to less steric hindrance.

However, it reacts exothermically with lithium and does not interact with molten sodium below its boiling point.

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Explanation:

Chemical bond refers to the forces holding atoms together to form molecules and solids. This force is of an electric nature, and the attraction between electrons of one atom to the nucleus of another atom contributes to what is known as chemical bonds.

The complete statement is "CH3CHOHCH3 is not an electrolyte in solution." This is further explained below.

Generally,a liquid or gel containing ions that may be broken down by electrolysis, such as the kind used in batteries.

In conclusion, "CH3CHOHCH3 is not an electrolyte in solution," is the whole sentence.

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A 20.0 g sample of methyl alcohol (CH₃OH, molar mass 32.0 g/mol) was dissolved in 21.6 g of water. The mole fraction of CH₃OH is 0.342.

Number of moles = [tex]\frac{\text{Given Mass}}{\text{Molar Mass}}[/tex]

Number of moles of CH₃OH = [tex]\frac{20\ g}{32\ g/mol}[/tex]

                                               = 0.625 mol

Number of moles of H₂O = [tex]\frac{21.6\ g}{18\ g/mol}}[/tex]

                                          = 1.2 mol

Mole Fraction = [tex]\frac{\text{Moles of solute}}{\text{Moles of solute + Moles of solvent}}[/tex]

                       = [tex]\frac{0.625}{0.625 + 1.2}[/tex]

                       = [tex]\frac{0.625}{1.825}[/tex]

                       = 0.342

Thus from the above conclusion we can say that A 20.0 g sample of methyl alcohol (CH₃OH, molar mass 32.0 g/mol) was dissolved in 21.6 g of water. The mole fraction of CH₃OH is 0.342.

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Answer:

Carbonate

Explanation:

Carbonate is a combination of a carbon atom and two oxygen atoms for form a compound.

1 mole of a gas at STP occupies 22.4 L volume

Now the volume is given =78.4 therefore,

No. of moles of gas = 78.4 ÷ 22.4 = 3.5 moles

I hope it helps you~

An effective way of reducing effects of radiation treatment on healthy cells is by  splitting the radiation into multiple treatments; option A.

The side effects of radiation treatment include damage to healthy cells.

This damage is can cause physical effects such as lowered immune system.

The best way to reduce this effect could be done by splitting the radiation into multiple treatments.

Therefore, radiation treatment produces undesirable effects such as damage to healthy cells.

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Answer:

The total energy that an electron and positron share is 5 Mev    

Explanation:

One of the potential ways that gamma rays interact with matter is by the formation of positron-electron pairs.

The pair production requires a minimum gamma-energy of 1.02 MeV since an electron's rest mass is equal to 0.511 MeV of energy. The electron-positron pair receives any extra kinetic energy from the pair-producing gamma ray.

The reaction is represented by γ =(. - 1e⁰) +  (. + 1e⁰)

E = m₀C² + [tex]KE_{electron}[/tex] + m₀C² + [tex]KE_{positron}[/tex]

10 MeV = 2m₀C² + [tex]KE_{electron}[/tex] + [tex]KE_{positron}[/tex]

[ 2m₀C²= 1.02 ] and since the mass of electron and positron is the same, the Kinetic energy (KE), 1/2 mv² will also be the same

Therefore,

KE = 1/2(10 - 1.02)

    =4.49 MeV

[ 2m₀C²= 1.02 so, m₀C² = 1.02/ 2 = 0.51]

Total energy shared = m₀C² + KE

                                  =  0.51 + 4.49

                                  = 5 Mev

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Issues that should be taken into account:

"Urbanization implications" are the issues that governments must consider before passing conservation policies.  

Conservation policies:

It is a policy intended to preserve or restore a community, ecosystem, endangered species, or a natural or semi-natural environment.

Protecting the planet's natural resources for the benefit of present and future generations is known as conservation.

Urbanizations implications:

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Answer: C.)

Explanation:

The answer is that they were were not based on evidence and experiment and that made alchemy unscientific in its practices.

Alchemy is an old practice that might be thought of as a forerunner of chemistry.

The term alchemy is derived from the Arabic al-kimiyya, which is derived from Greek. Alchemy's fundamental notions focus around the transformation of one substance into another, often transforming a basic metal like lead or iron into a "noble" metal like silver or gold

The alchemist's main ambitions were to find the Stone of Knowledge, the medium of Eternal Youth and Health, and metal transmutation.

To conclude with we can say Alchemy is based on magic and occultism rather than true investigation and facts. Many of the items in it have been utilised as fundamentals for certain chemistry, although the vast majority of them are wrong and inaccurate.

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Answer:

10 million years

Explanation:

For a sample to decay to 25% of its original amount, 2 half lives must have passed. Since one half life is 5 million years, multiplying this by 2 gives us that 2 half lives is 10 million years.

The amount of the original isotope that remains after 30 days is 11.14.

The half life of a radioactive nuclide has to do with the time that it takes for only half of the original number of nuclides to remain.

Now;

No = 150 grams

N = ?

t1/2 = 8 days

t = 30 days

Then;

N/No = (1/2)^t/t1/2

N/150 = (1/2)^30/8

N/150 = (1/2)^3.75

N = (1/2)^3.75 * 150

N = 11.14

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Given the half-life, the amount remaining is 11.14 g

The half-life of idine-131 is 8 days.

Using the half-life formula:

Nt = No * (0.5)^(t/t1/2)

Amount remaining = 150 * (05)^(30/8)

Amount remaining = 11.14 g

In conclusion, the amount remaining is determined from the half-life of the substance.

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The K+ channel uses the energy in ATP hydrolysis to remove the hydration shell from the K+ion

All of this truly implies is that one of these bonds breaks in a hydrolysis process (a water-mediated breakdown reaction), releasing a sizable amount of energy.

The following reaction results in the hydrolysis of ATP to ADP:

ATP+H2O⇋ADP+Pi+energy

The hydrolysis of ATP to ADP is reversible, like the majority of chemical processes.

Energy is needed for the reverse process, which creates ATP from ADP and Pitext P iPi start subscript, P, end subscript, start subscript, I end subscript.

Because cells frequently use (hydrolyze) ATP molecules and depend on constant production of replacement ATP, ATP regeneration is crucial1^1.

Hence the  K+ channel uses the energy in ATP hydrolysis to remove the hydration shell from the K+ion

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0.592 grams of O₂ gas are needed.

An ideal gas is a gas that obeys gas laws at all temperature and pressure conditions. It have velocity and mass but do not have volume. Ideal gas is also called perfect gas.

Ideal gas law equation is expressed as:

PV = nRT

where,

P = Pressure

V = Volume (in Liters)

n = Number of moles of gas

R = Ideal gas constant

T = Temperature

Here,

P = 0.505 atm

V = 869 ml = 0.869 L

R = 0.0821 L atm/K mol  [Ideal gas constant]

T = 287 K

Now put the values in above equation

PV = nRT

0.505 atm × 0.869 L = n ×  0.0821 L atm/K mol × 287 K

0.438 atm L = n × 23.56 L atm / mol

[tex]n = \frac{0.438\ \text{atm L}}{23.56\ \text{L atm / mol}}[/tex]

n = 0.0185 mol

Now,

Mass of oxygen = Number of moles × Molar Mass

                           = 0.0185 mol × 32 g/mol

                           = 0.592 gram

Thus from the above conclusion we can say that 0.592 grams of O₂ gas are needed.

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Answer:

11.9

Explanation:

ph=poh-14 and vice versa. Always subtract by 14

Which holds true for nuclear fission? Check all that apply.

Which holds true for nuclear fusion? Check all that apply.

What is nuclear fission?

An unstable nucleus splitting into two smaller, more stable nuclei is known as nuclear fission. Large amounts of energy are released during this process since a smaller nucleus's structure requires a lot less energy to maintain. This mechanism is exploited by turning the thermal energy released into electrical energy.

What is nuclear fusion?

The alternative is nuclear fusion. It entails joining two smaller, less stable nuclei into one larger, more stable nucleus. The sun is where this process takes place because it needs so much energy. Moreover, a tremendous amount of energy is released. Helium, a two-proton element, is the smallest element that can be created using this procedure. The smallest element has one proton (H).

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Answer:

A B D E

Explanation:

Edge 2023

The rate of change of [tex]SO_2[/tex](g)=0.024M/s when the rate of change of [tex]CS_2(g)[/tex] is – 0.012 M/s.

Reaction rate, in chemistry, is the speed at which a chemical reaction proceeds.

[tex]CS_2(l)+3O_2(g)[/tex] → [tex]CO_2(g)+2SO_2(g)[/tex]

[tex]Rate = \frac{-dcs_2}{dt} =\frac{-do_2}{dt} =\frac{+dco_2}{dt} =\frac{1dso_2}{dt}[/tex]

Rate = \frac{-dcs_2}{dt}  =\frac{-do_2}{dt} =\frac{+dco_2}{dt} =\frac{1dso_2}{dt}

Given:

[tex]\frac{-dcs_2}{dt} =-0.012 M/s[/tex]

[tex]\frac{-dcs_2}{dt} =\frac{dso_2}{dt}[/tex]

[tex]\frac{dso_2}{dt}=0.024M/s[/tex]

The rate of change of [tex]SO_2[/tex](g)=0.024M/s

Hence, the rate of change of [tex]SO_2[/tex](g)=0.024M/s

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Answer:

A

Explanation:

Phosphorus has an electron configuration of 1s2 2s2 2p6 3s2 3p3. Another way to write that is [Ne] 3s2 3p3. The [Ne] represents the fact that the beginning of phosphorus' electron configuration is the same as Neon's. so if you add all the superscripts they will give you 15. we didn't use choice d because we have to make the last p halffilled(3, half of the total electron held in p shell ) when we make "s shell 1 " not make it 4 because we are transfering that 1 electron .but nevertheless the correct answer is A.

[tex]\huge\purple{Hi!}[/tex]

carbon atom can form four covalent bonds.

Answer:

3 moles Al2O3

Explanation:

See attached image.