NEED ANSWERED ASAP

An ideal gas is at volume V at temperature T. If the volume is doubled at constant pressure and the same amount of gas particles, the temperature will be
unchanged
halved
doubled
four times

In the given reaction  fluorine is reduced and chlorine is oxidized.

Oxidation is a process in which addition of oxygen or removal of hydrogen and electron takes place, while reduction is a process in which addition of hydrogen & electrons or removal of oxygen takes place.

Given chemical reaction is:

F₂ + 2HCl → Cl₂ + 2HF

F₂ + 2e⁻ → 2F⁻

2Cl⁻ → Cl₂ + 2e⁻

Hence, fluorine is reduced and chlorine is oxidized in the given reaction.

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Answer:

Explanation:

The number of atoms can be found by using the formula

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

We have

N = 9.3 × 6.02 × 10²³

We have the final answer as

Hope this helps you

The next sequence of events that occur in the presynaptic agitation underlying the next short-term behavioral sensitization is PKA signaling keeps presynaptic K+ channels open

The correct answer is D.

The sequence of events that take place in the presynaptic enhancement underlying short-term behavioral sensitization is as follows:

Therefore, the correct option is (d) PKA signaling keeps presynaptic K+ channels open.

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I will do my best to help! Since I'm not the best at explaining things, I will just show my work. For number four, I wasn't exactly sure what you meant so I just solved it in different ways depending on the different ways I thought you meant. I'm sorry if I didn't end up solving it the way you wanted though. Either way, I really hope I helped you out!

1.
(8.41 X 104) + (9.71 X 104)
874.64 + 1009.84
= 1884.48

2.
(5.11 X 102) - (4.2 X 102)
521.22 - 428.4
= 92.82

3.
(8.2 X 103) + (4.0 X 103)
844.6 + 412
= 1256.6

4. (If the equation was supposed to be "(6.3 X 10^9) - (2.1 X 102)")
(6.3 X 10^9) - (2.1 X 102)
(6.3 x 1000000000) - (2.1 X 102)
6300000000 - 214.2
= 6299999785.8

4. (If the equation was supposed to be "(6.3 X 109) - (2.1 X 102)")
(6.3 X 109) - (2.1 X 102)
686.7 - 214.2
= 472.5

Both the sum and difference can be used in various contexts, such as solving equations, calculating measurements, or analyzing data. These operations are fundamental in mathematics and are often used in everyday situations where numbers need to be combined or compared.

1) (8.41 x 10⁴) + (9.71 x 10⁴) = 1.521 x 10⁵

To find the sum, add the numbers in scientific notation by ensuring that the exponents are the same. In this case, since both numbers have an exponent of 4, you can add the coefficients: 8.41 + 9.71 = 18.12. The result is then expressed in scientific notation as 1.812 x 10⁵, which is equivalent to 1.521 x 10⁵ after rounding to three significant figures.

2) (5.11 x 10²) - (4.2 x 10²) = 0.91 x 10²

To find the difference, subtract the numbers in scientific notation while keeping the exponents the same. In this case, both numbers have an exponent of 2. Subtracting the coefficients gives you: 5.11 - 4.2 = 0.91. The result is then expressed in scientific notation as 9.1 x 10¹, which is equivalent to 0.91 x 10² after rounding to two significant figures.

3) (8.2 x 10³) + (4.0 x 10³) = 12.2 x 10³

To find the sum, add the numbers in scientific notation by ensuring that the exponents are the same. In this case, both numbers have an exponent of 3. Adding the coefficients gives you: 8.2 + 4.0 = 12.2. The result is then expressed in scientific notation as 1.22 x 10⁴ after rounding to three significant figures.

4) (6.3 x 10⁹) - (2.1 x 10²) = 6.3 x 10⁹

To find the difference, subtract the numbers in scientific notation while keeping the exponents the same. In this case, the exponents are different, but when subtracting a small value like (2.1 x 10²) from a large value like (6.3 x 10⁹), the smaller value becomes insignificant. Therefore, the result is approximately equal to the larger value: 6.3 x 10⁹.

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Answer:

Answer:

Explanation:Balance equation:

2 FeBr3 + 3 Na2S → Fe2S3 + 6 NaBr

When an H atom absorbs an ultraviolet photon with the correct energy, the electron in the atom can undergo a transition from the fifth energy level (n=5) to the first energy level (n=1).

This type of transition is called a "quantum jump" and is associated with the emission of a photon. When an H atom absorbs an ultraviolet photon with the correct energy, it will move from its ground state to an excited state.

This excitation of the electron can then lead to further processes such as the emission of a photon or the formation of an ion-pair. Therefore the correct answer is D)n=5 to n=1 when the H atom absorbs an ultraviolet photon with the correct energy

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complete question:

when a H atom absorbs an ultraviolet photon with the correct energy, what transition can the electron in the atom undergo?

A)n=1 to n=5

B)n=2 to n=6

C)n=6 to n=2

D)n=5 to n=1

When the metal is seen to start melting at a temperature of about 29°C in its container, gallium is most likely the metal.

A metal is a substance that exhibits a shiny appearance when freshly processed, polished, or shattered, and conducts electricity and heat rather well. Generally speaking, metals are malleable and ductile. These characteristics are the outcome of the metallic link that exists between the metal's atoms or molecules. Any of a group of materials known as metals that exhibit strong thermal and electrical conductivity as well as malleability, ductility, and high light reflection.

Extraction of the unprocessed ore from the earth is the initial step in the production of metal alloys. The non-metal components, like as rock and rubbish, are subsequently removed from the ore during processing. Metal alloys are created by melting and mixing different metal parts.

The majority of pure metals are located in the crust of the earth. Ores, which are solid substances from which metals and minerals can be extracted, are where they are found. Iron makes up almost a third of the planet's mass, and most of it is concentrated in its core.

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Answer:

pa brainliest answer po pa heart pa follow me and back

Explanation:

SUMMURY

Radiation is energy. It travels in the form of energy waves or high-speed particles. Radiation can occur naturally or be man-made. ... Ionizing radiation, which includes ultraviolet radiation, radon, x-rays, and gamma rays.

Radiation is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.

DIFFENITION :

radiation

1a: the action or process of radiating

b: the process of emitting radiant energy in the form of waves or particles

c(1): the combined processes of emission, transmission, and absorption of radiant energy

(2): the transfer of heat by radiation

— compare CONDUCTION, CONVECTION

2a: something that is radiated

b: energy radiated in the form of waves or particles

3: radial arrangement

4: ADAPTIVE RADIATION

Answer: if doing it on ck-12 the answer is 40.1

Explanation:

There are produced 40.1 grams of ammonium chloride (NH₄Cl) in the reaction between 17.0 g of ammonia (NH₃) and 26.6 g of chlorine gas (Cl₂).

The reaction between ammonia and chlorine gas is the following:

8NH₃ + 3Cl₂ → 6NH₄Cl + N₂        

Initially, we have:

According to the conservation of mass, matter cannot be created or destroyed, only can be transformed, so the mass of the reactants must be equal to the mass of the products.  

The mass of ammonium chloride produced is:

\( m_{r} = m_{p} \)

\( m_{NH_{3}} + m_{Cl_{2}} = m_{NH_{4}Cl} + m_{N_{2}} \)

\( 17.0 g + 26.6 g = m_{NH_{4}Cl} + 3.50 g \)

\( m_{NH_{4}Cl} = 17.0 g + 26.6 g - 3.50 g = 40.1 g \)

Therefore, 40.1 grams of ammonium chloride are produced in the reaction.

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Answer:

Addition

Explanation:edg 2020

Answer:

The correct answer is A.

Explanation:

Edge 2022

Basalt is an ingenious salt which is found near the surface. Limestone fossils are found in sedimentary sequences and they are old by 2.7 billion years. Sand stones with trilobites are old about 500 million years.

Rocks are the major parts of the tectonic plates of earth, There are broadly three classes of rocks namely, sedimentary rocks, igneous rocks and metamorphic rocks.

Basalt is a type of well grained igneous rocks found near the surface of earth. Rapid cooling of lava rich in Mg and Ca composes Basalt rock

Limestone, a form of carbonate sedimentary rock composed primarily of calcium carbonate (CaCO3). The minerals calcite and aragonite, which are various crystal forms of CaCO3, make up the majority of its material. When these minerals separate from water that has dissolved calcium, limestone is created.

Sileous sandstone is a typical component of nearshore deposits about 500-600 million years of age. This often grades into siltstone and shale as it moves into the sea, with finer-grained sediment accumulating in deeper water to create these rocks.

Shale rocks with ammonites have an age of about 70 million years. Ammonites are spiral shaped fossilized shells of marine animals.

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At PH 1.2, the indicator will appear red.

Universal indicator- The universal indicator is a mixture of 4 common indicators allowing for a large pH range to be measured.

At pH 7, the indicator will appear yellow due to bromothymol blue. The universal indicator (or parts thereof) are in equilibrium and have an associated K value.

K value- The K value indicates the amount of products and reactants present in the reaction. It is an equilibrium ratio of the concentration of products and the reactants.

A universal indicator is made by mixing bromomethyl, methyl orange and phenolpthalein in alcohol.

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Aid is money given to students for education funding which may not be paid back.

The term aid may be used to refer to money given to a person for a particular purpose which the person may not be required to pay back. Often students are given this sort of assitance to fund their education.

Hence, grants given to students to finance their education which they may not pay back are called aid.

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The setup in A will not change while the color of the set up in B will gradually change from blue to green.

The term displacement reaction is said to occur when a specie is removed from solution by another specie that is above it in the electrochemical series.

In trying to answer this question, we must have it at the back of our minds that iron is ahead of copper in the electrochemical series. This implies that iron can displace coper from its aqueous solution.

This simply means that the color of the setup in A will not change while the color of the set up in B will gradually change from blue to green.

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Answer:

Explanation:

The closest I can come to this is

Li C2H5 which would really be weird, but it comes to nearly 37.11. Everything depends on the periodic table you are using.

C2 = 2 * 12.011 = 24.022

H5 = 5 *   1.008 = 5.040

Li =  1 * 6.94          6.94

Total                    36.002  

The number of moles of a gas with a pressure of 1 atm and a temperature of 273.15K occupying a volume of 224L is 10 moles. Avogadro's number is 6.022 x 10²³. This number represents the number of atoms, molecules, or ions in a mole of any substance. It has been calculated from experiments and is a fundamental constant of chemistry.

The ideal gas law is a combination of gas laws that defines the behaviour of an ideal gas. The relationship between the pressure, volume, and temperature of a gas is described by this law. It is given by the formula PV = nRT, where P is pressure, V is volume, n is the number of moles of the gas, R is the ideal gas constant, and T is the temperature in Kelvin.

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Answer:

it means that the two opposing reactions run on equal rates hence there is no net change

it means that the two opp2r

The net ionic equation for the reaction between acetic acid (HC2H3O2) and sodium hydroxide (NaOH) can be written as:

HC2H3O2 (aq) + OH- (aq) --> H2O (l) + C2H3O2- (aq)

The net ionic equation for the reaction between sodium acetate (NaC2H3O2) and sodium hydroxide (NaOH) can be written as:

NaC2H3O2 (aq) + OH- (aq) --> NaOH (aq) + C2H3O2- (aq)

In the buffer solution mode, both of these reactions occur simultaneously. The acetic acid reacts with the hydroxide ions to form water and acetate ions, while the sodium acetate reacts with the hydroxide ions to form sodium hydroxide and acetate ions. The acetate ions produced by both reactions act as a buffer, helping to maintain the pH of the solution.

So the overall net ionic equation for the reaction in the buffer solution mode can be written as:

HC2H3O2 (aq) + NaOH (aq) --> H2O (l) + NaC2H3O2 (aq)

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The relative abundance of isotopes is the number of atoms of a particular isotope divide by the total number of atoms of all isotopes of that element, multiplied 100 percent.

The relative abundance of an isotope is the percentage of atoms with a specific atomic mass found in a naturally occurring sample of an element.

Also relative abundances refers to the relative proportions of the stable isotopes of each element. They are most often quoted as atom percentages

To calculate the percent abundance of each isotope in a sample of an element,  the number of atoms of a particular isotope is usually divide by the total number of atoms of all isotopes of that element and then multiply the result by 100 since it is expressed in percentage.

Mathematically, the formula for relative abundance is given as;

R.A = ( number of atoms of isotope / total number of atoms ) x 100%

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Answer:

Electronegativity is the relative ability of an atom involved in covalent bonding to pull electrons toward itself.

Answer:

Electronegativity

Explanation:

Electronegativity is the ability of an atom to attract electron.

Electronegativity increases as it get closer to fluorine since fluorine is the most electronegative element.

Answer: Neutral

Explanation: This is because, in the ph scale, greater than 7 indicates base or alkaline (basic), while less than 7 indicates that it is acidic.

Answer:

It has two isomers; n-butane and isobutane. Here n-butane is a straight-chain compound with four carbon atoms bonded with single covalent bonds. Explanation: Butane is an alkane with four carbon atoms so molecular formula is C4H10.

Explanation:

Answer:

the answer would be to your problem here is 90g

Explanation:

Answer:

I think the correct answer would be the second one

The solution are required to obtain 50.0 grams of sodium nitrate is 395 gm.

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Carbon plays a fundamental role in the structure of organic compounds.

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The pH of the acid solution after adding the NaOH solution is approximately 4.068.

First, let's calculate the moles of HNO₂ in the original solution:

Moles of HNO₂ = Volume (in liters) × Concentration

= 0.1152 L × 0.4600 mol/L

= 0.052992 mol

Since the stoichiometric ratio between HNO₂ and NaOH is 1:1, the moles of NaOH added will be equal to the moles of HNO₂ consumed.

Now, let's calculate the moles of NaOH added:

Moles of NaOH = Volume (in liters) × Concentration

= 0.1704 L × 0.3400 mol/L

= 0.057936 mol

Since the moles of HNO₂ consumed equal the moles of NaOH added, we can calculate the remaining moles of HNO₂:

Remaining moles of HNO₂ = Initial moles of HNO₂ - Moles of NaOH added

= 0.052992 mol - 0.057936 mol

= -0.004944 mol

The negative value indicates that all the HNO₂ has reacted with the NaOH. The excess NaOH is in solution.

To determine the concentration of the remaining HNO₂, we can use the Henderson-Hasselbalch equation:

pH = pKₐ + log ([A-]/[HA])

Since HNO₂ is a weak acid, it will dissociate to form H⁺ and NO₂⁻ ions:

HNO₂ ⇌ H⁺ + NO₂⁻

In this equation, [A-] represents the concentration of NO₂⁻, and [HA] represents the concentration of HNO₂.

We can assume that the volume of the solution doesn't change significantly upon mixing, so the concentration of HNO₂ can be calculated as follows:

[HNO₂] = Moles of HNO₂ / Volume of solution (in liters)

= 0.004944 mol / 0.1152 L

= 0.0429 M

Now, let's substitute the values into the Henderson-Hasselbalch equation:

pH = 3.35 + log ([NO₂⁻]/[HNO₂])

Since the stoichiometric ratio is 1:1, the concentration of NO₂⁻ is equal to the moles of NaOH added divided by the final volume of the solution:

[NO₂⁻] = Moles of NaOH / Final volume of solution (in liters)

= 0.057936 mol / (0.1152 L + 0.1704 L)

= 0.2248 M

Substituting the values into the equation:

pH = 3.35 + log (0.2248 M / 0.0429 M)

pH = 3.35 + log (5.234)

Using a calculator:

pH ≈ 3.35 + 0.718

pH ≈ 4.068

Therefore, the pH of the acid solution after adding 170.4 mL of the NaOH solution is approximately 4.068.

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The fugacity in atm for pure ethane at 310 K and 20.4 atm is given by the equation: f = 20.4 exp (-Δg1/RT). The change in chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm is -0.0911RT.

Fugacity is a measure of the escaping tendency of a component in a mixture, which is defined as the pressure that the component would have if it obeyed ideal gas laws. It is used as a correction factor in the calculation of equilibrium constants and thermodynamic properties such as chemical potential. Here we need to determine the fugacity in atm for pure ethane at 310 K and 20.4 atm and the change in the chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm. So, using the formula of fugacity: f = P.exp(Δu/RT) Where P is the pressure of the system, R is the gas constant, T is the temperature of the system, Δu is the change in chemical potential of the system.  Δu = RT ln (f / P)The chemical potential at the initial state can be calculated using the ideal gas equation as: PV = nRT    

=>  P

= nRT/V

=> 20.4 atm

= nRT/V

=> n/V

= 20.4/RT The chemical potential of the system at the initial state is:

Δu1 = RT ln (f/P)

= RT ln (f/20.4) Also, we know that for a pure substance,

Δu = Δg. So,

Δg1 = Δu1 The change in pressure is 24 atm – 20.4 atm

= 3.6 atm At the second state, the pressure is 24 atm.

Using the ideal gas equation, n/V = 24/RT The chemical potential of the system at the second state is: Δu2 = RT ln (f/24) = RT ln (f/24) The change in chemical potential is Δu2 – Δu1 The change in chemical potential is

Δu2 – Δu1 = RT ln (f/24) – RT ln (f/20.4)

= RT ln [(f/24)/(f/20.4)]

= RT ln (20.4/24)

= - 0.0911 RT Therefore, the fugacity in atm for pure ethane at 310 K and 20.4 atm is:

f = P.exp(Δu/RT)

=> f

= 20.4 exp (-Δu1/RT)

=> f

= 20.4 exp (-Δg1/RT) And, the change in the chemical potential between this state and a second state of ethane where the temperature is constant but pressure is 24 atm is -0.0911RT. Therefore, the fugacity in atm for pure ethane at 310 K and 20.4 atm is given by the equation: f = 20.4 exp (-Δg1/RT). The change in chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm is -0.0911RT.

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