CH3NH2 a. methyl red, eriochrome black T, bromocresol purple or alizarin b. 2,4-dinitrophenol or bromphenol blue c. phenolphthalein d. o-cresolphthalein or phenolphthalein e. bromocresol green or bromphenol blue

The answer is given below :For each of the given decay processes, the conservation of strangeness is given as follows:(a) Strangeness is conserved.(b) Strangeness is not conserved.(c) Strangeness is conserved.(d) Strangeness is conserved.(e) Strangeness is conserved.(f) Strangeness is conserved.

(a) The decay process given as $K^0 \right arrow \pi^+ + \pi^-$ is the decay of a $K^0$ meson, which is an example of the strong force at work. Strangeness is conserved in this process.

(b) The decay process $ \Lambda^0 \right arrow p + \pi^-$ is a decay of a $\Lambda^0$ baryon. Strangeness is not conserved in this process.

(c) The reaction given as $n + n \right arrow K^- + K^+ + n$ is an example of a strong force interaction. Strangeness is conserved in this process.

(d) The reaction given as $X + n \right arrow \Lambda^0 + K^0$ is an example of a strong force interaction. Strangeness is conserved in this process.

(e) The reaction given as $A^{00} + n \right arrow \Sigma^+ + K^0$ is an example of a strong force interaction. Strangeness is conserved in this process.

(f) The reaction given as $X + p \right arrow A^0 + K^-$ is an example of a strong force interaction. Strangeness is conserved in this process.

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Answer:

Explanation:

A solid, at a given temperature, has a definite volume  

and shape which may be affected by changes in  

temperature. Solids usually increase slightly in size  

when heated (expansion)  and usually  

decrease in size if cooled (contraction).A liquid, at a given temperature, has a  

fixed volume and will take up the shape of any  

container into which it is poured. Like a solid, a  

liquid’s volume is slightly affected by changes in  

temperature.

A gas, at a given temperature, has neither a definite  

shape nor a definite volume. It will take up the shape  

of any container into which it is placed and will  

spread out evenly within it. Unlike those of solids  

and liquids, the volumes of gases are affected quite  

markedly by changes in temperature.

One mole of Al(NO3)3 is equal to 212.99623 grams, while one mole of Carbon Tetrachloride is equal to 153.8227 grams and three moles are equal to 461.4681 grams of Carbon Tetrachloride.

Because it is simple to manufacture, compatible with explosives, and produces a very high enthalpy of oxidation, aluminum is commonly employed. These reactions make aluminum the perfect component for increased blast applications, where a "thermobaric" effect is produced by a late reaction with air.

The effects of Al's toxicity include oxidative stress, immunologic changes, genotoxicity, pro-inflammatory effects, peptide denaturation of transformation, enzymatic malfunction, metabolic derangement, amyloidogenesis, transmembrane disruption, iron dyshomeostasis, apoptosis, necrosis, and dysplasia.

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Atom is the smallest particle of an element that can retain all the chemical properties.

Atom is defined as the smallest part of a substance that cannot be broken down through chemical process. Each atom contains a nucleus (which is its center, and nucleus is made up of protons (positive particles) and neutrons (particles with no charge). Electrons which are negative charged particles, move around the nucleus.

Generally, the electrons which are associated with atoms are found to have measurable properties which exhibit quantization. The electrons are basically found in quantized energy states of the lowest possible energy for the atom, known as ground states.

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Answer:

yes acid can nuetralize bases

Answer:

Yes!

Explanation:

Strong Acids neutralize Strong bases.

When they react, water is formed. Whatever ions are left over, they become salt.

There must be an equal moles of strong acid and strong base.

Answer:

1.60217663 × 10-19 coulombs

Explanation:

The electron is the lightest known stable subatomic particle.

It has a negative charge that is equivalent to 1.602176634 coulombs, which is regarded as the fundamental unit of electric charge.

Answer:

yes...Sodium reacts with oxygen to form sodium oxide and has the following balanced chemical equation: 4 Na + O2 → 2 Na 2O.

There are four sodium atoms in the product.

A reaction equation is said to be balanced when the number of atoms of reactants are equal to the number of atoms of products according to the balanced reaction equation.

Given the reaction between sodium metal and oxygen, the reaction could be written as; 2Na(s) + O2(g) ----> 2Na2O(s). We can see that there are four sodium atoms in the product.

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Answer:

I don't have how to do that in numerical figures

The amount of iron, in grams, that is needed to completely react with 878.0 g of  \(Cl_2\) would be 460.392 grams

Iron (III) chloride is produced by reacting iron with chlorine as follows:

\(Fe + Cl_2 --- > FeCl_3\)

The balanced equation of the reaction goes thus:

\(2Fe + 3Cl_2 --- > 2FeCl_3\)

The mole ratio of iron to chlorine is 2:3.

Recall that: mole = mass/molar mass

Molar mass of \(Cl_2\) = 35.5 x 2

                             = 71 g/mol

Mole of 878.0 g  \(Cl_2\) = 878/71

                                 = 12.3662 moles

From the mole ratio, the equivalent mole of Fe from 12.3662 moles  \(Cl_2\) will be:

 12.3662 x 2/3 = 8.2441 moles

Mass of 8.2441 mole Fe = mole x molar mass

Molar mass of Fe = 55.845 g/mol

Mass of 8.2441 moles Fe = 8.2441 x 55.845

                                         = 460.392 grams

The numbers in the final multiplication operation have 5 significant figures each. Thus, the significant figure of the final answer will also be 5.

in other words, the amount of iron needed to completely react with 878.0 g of  \(Cl_2\) is 460.392 grams.

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Answer:

D) 14 Electrons

Explanation:

I took the test and got it right

The total number of electrons that can occupy the f sublevel is 14 electrons. Thus option D is correct.

Electrons can be defined as a negatively charged subatomic particle that together with protons and neutrons forms an atom's nucleus. It is the lightest subatomic particles.

s orbital has 2 electrons in pair

p orbital has 6 electrons in pair

d orbital has 10 electrons in pair

f orbital has 14 electrons in pair.

Thus, the total number of electrons that can occupy the f sublevel is 14 electrons. Thus option D is correct.

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Since the student wants to synthesize propionitrile from ethanol, the correct answer is C. PBr3, pyridine; NaCN.

This is a substitution reaction where the hydroxyl (-OH) group in ethanol is replaced with a cyano (-CN) group to form propionitrile. The reaction requires the use of a reagent that can convert the -OH group into a good leaving group and a nucleophile that can attack the carbon atom to form the C-N bond.

Out of the given options, PBr3 (phosphorus tribromide) is the best reagent to convert the -OH group into a good leaving group (Br-) by converting it into an alkyl bromide. Pyridine is used as a base to deprotonate the alcohol, making it a better leaving group. NaCN (sodium cyanide) acts as a nucleophile and attacks the carbon atom to form the C-N bond.

Therefore, the correct reagents for the synthesis of propionitrile from ethanol are PBr3, pyridine, and NaCN.

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We can conclude as chlorine is the excess reactant and potassium bromide is the solute. Just 31.3 g of KCl, the mass produced from solute, can be made by 50.0 g of chlorine & 50.0 grams of potassium bromide.

The substance which is present when a chemical reaction first begins is known as a reactant. Products refer to the material or substances to a right of the arrow. A substance that's also present following a chemical reaction is known as a product.

In the first, sodium (Na) and chlorine (Cl) are the reactants, and the finished product being sodium chloride, called table salt (NaCl N a C l ).

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Answer: 215.0%

Explanation:

Answer:

Photometer

Explanation:

A photometer (photo comes from the Greek for light) measures the light coming from 140,000 stars in Kepler's stationary field of view. If a planet transits (passes in front of) any star the amount of light from the star is reduced enough so that the photometer senses it and relays the information back to the Kepler team.

Scientific instruments are tools used for researching the universe and natural sciences. A Photometer is sensitive enough to detect a planet transiting a star. Thus, option D is correct.

A Photometer is a device that converts light energy into electrical voltage by the photoelectric effect given by Einstein. It uses Quantum mechanics to convert the energy possessed by the photons and electrons. It follows Ohm's law to convert energy.

It is used to detect the planets transiting stars as they can detect the light energy as it uses the electromagnetic radiation of various wavelengths to convert them by the photodiode, resistor, and a multiplier.

Therefore, option D. a photometer is used to detect the planets in the universe transiting stars.

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Your question is incomplete, but most probably your full question was, What scientific instrument is sensitive enough to detect a planet transiting a star?

Answer

A

Explanation

letter a kase tama

Answer:

Barium Sulfite

Explanation:

Barium Sulfite

The IUPAC name for BaSO₃ is barium sulfite.

"Ba" stands for barium, which is the chemical symbol for the element with atomic number 56. Barium is an alkaline earth metal and belongs to Group 2 of the periodic table.

"SO₃" stands for sulfite, which is a polyatomic ion composed of one sulfur atom (S) and three oxygen atoms (O). The chemical formula for the sulfite ion is SO₃²⁻. The sulfur atom in the sulfite ion has a +4 oxidation state.

When barium (Ba) reacts with the sulfite ion (SO₃²⁻), they combine to form barium sulfite (BaSO₃). The balanced chemical equation for the reaction is:

Ba²⁺ + SO₃²⁻ → BaSO₃

Barium sulfite is an ionic compound, where the Ba²⁺ ion and the SO₃²⁻ ion are held together by electrostatic attractions (ionic bonds). In its solid form, barium sulfite appears as a white crystalline powder.

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Answer:

Triton is the largest natural satellite of the planet Neptune, and the first Neptunian moon to be discovered. The discovery was made on October 10, 1846, by English astronomer William Lasselle. It is the only large moon in the Solar System with a retrograde orbit, an orbit in the direction opposite to its planet's rotation.

A sample that is not finely ground creates difficulties in melting point determination due to inconsistent sample size and poor heat transfer. To obtain accurate results, it is essential to grind the sample finely, ensuring uniform particle size and efficient heat transfer during the melting point determination process.

A sample that is not finely ground can create difficulties in a melting point determination for two main reasons.

Firstly, larger particle sizes can lead to an inaccurate melting point reading. When a sample is not finely ground, it may contain larger particles that have a higher melting point than the rest of the sample. These particles can take longer to melt than the rest of the sample, leading to a broader and inaccurate melting point range.

This can make it difficult to accurately determine the true melting point of the sample, which is important for identifying its chemical properties.

Secondly, a sample that is not finely ground can also result in poor heat transfer, leading to an inaccurate melting point determination. During a melting point determination, the sample needs to be heated at a constant rate to ensure accurate results.

However, larger particles may not conduct heat as effectively as smaller particles, which can lead to localized overheating or underheating. This can cause the sample to melt at a higher or lower temperature than expected, leading to inaccurate melting point readings.

Therefore, it is important to finely grind a sample before conducting a melting point determination to ensure accurate and reliable results.

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Answer:

Boron : B :: Beryllium :​Be

Explanation:

Boron is an element found in group 13 of the periodic table. It has three electrons in its outermost shell hence a valency of 3.

Beryllium is an element in group two of the periodic table. It has a valency of two hence there are two electrons in its outermost shell.

Boron and beryllium are similar words. The symbol of boron is B while the symbol of beryllium is Be.

Answer:

4.0 kg

Explanation:

M = W/g = 39.2/9.8 = 4.0 kg

sorry if its wrong-

Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

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Here is the ranking of bonds and interactions in a living cell from strongest to weakest: Covalent bonds, Ionic bonds, Hydrogen bonds, Van der Waals interactions.

The strongest to weakest links and interactions in a live cell are listed below:

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The following question may be like this:

What is the order of bonds and interactions from the strongest to the weakest?

(Covalent, Van der Waals interaction, ionic bond, hydrogen bond)

Answer:

I would say c.

Explanation:

Dow Company refused to take responsibility for Bhopal Tragedy because they claimed that they acquired Union Carbide free of liabilities. Union Carbide owned the plant in Bhopal before. They settled the claim but paid substantially fewer fines than the amount being promised, until such time that Dow Company acquired them.

Is Dow chemical responsible for Bhopal?

India's Bhopal plant suffered a terrible tragedy when gas leaked out of it in 1984. You should be aware that The Dow Chemical Company (TDCC) has never owned or run the Bhopal plant. TDCC did not take over UCC's debts when Union Carbide Corporation (UCC) became a division of TDCC in 2001.

What Is the Meaning of Dow in the Stock Market?

The Dow Jones Industrial Average, also known as the Dow for short, is a metric used to determine the general direction of the stock market. 30 of the stocks with the heaviest trading volume are represented by their prices.

What is Dow chemical famous for?

The Dow Chemical Company (Dow) manufactures and provides raw materials for goods used in a wide range of sectors, including the appliance, automotive, agricultural, chemical processing, electronics, oil and gas, and processed food industries.

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Answer:

7.1 g

Explanation:

A way to figure this out is by using the molecular formula.

\(Na + Cl\) ⇒ \(NaCl\)

(Sodium + Chloride ⇒ Sodium Chloride)

From this formula it's one mol sodium + one mol chloride = one mol of sodium chloride.

Then you can substitute the values:

4.6 grams sodium + x grams chlorine = 11.7 g of sodium chloride

By using algebra you get:

x = 11.7 - 4.6 = 7.1 g

You can check this by using the molar masses of sodium and chlorine which can take a more time and is kind of unnecessary.

Hope that helps!

There are different ways to know if a statement is true.  When questioned, the principal could say that open campus lunch was a contributing factor to student  tardiness is true statement.

A statement is true if what it stand in gap for the case, Example is The buses are always early” is only true if what it describes is the case. That  is,  if it is actually the case that the buses are often early.

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The reaction of carbonic acid with two equivalents of hydroxide ions results in the formation of one carbonate ion and two water molecules is:

\(HCO_3^- + OH^- - > CO_3 ^{2-} + H_2O\)

The reaction of carbonic acid (H₂CO₃) with two equivalents of hydroxide ions (OH⁻) can be represented as follows:

\(H_2CO_3 + 2OH^- - > CO_3 ^{2-} + 2H_2O\)

In this reaction, two hydroxide ions react with one molecule of carbonic acid to form one carbonate ion (CO₃²⁻) and two water molecules (H₂O).

Carbonic acid is a weak acid that can ionize in water to produce hydrogen ions (H⁺) and bicarbonate ions (HCO₃⁻):

\(H_2CO_3 - > H^+ + HCO_3^-\)

When two equivalents of hydroxide ions (OH⁻) are added to the carbonic acid solution, they react with the hydrogen ions (H⁺) to form water molecules:

\(H^+ + OH^- - > H_2O\)

The remaining bicarbonate ion (HCO₃⁻) can then react with another hydroxide ion (OH⁻) to form a carbonate ion (CO₃²⁻) and water:

\(HCO_3^- + OH^- - > CO_3 ^{2-} + H_2O\)

Overall, the reaction of carbonic acid with two equivalents of hydroxide ions results in the formation of one carbonate ion and two water molecules.

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