what is the correct name or formula? A.n2oB. carbon tetrafluorideC dinitrogen pentoxideD. s2cl2

Answer:

Because the moon's path is predictable

Explanation:

The moon affects the tides

Answer:

the answer is 1.227

The correct order of the increasing polarity of the analyte functional group isEthers < Esters.

The given statement is "Polarities of analyte functional group increase in the order of hydrocarbon ethers < esters."  The order of polarities of functional groups is the order of their increasing polarity (i.e., less polar to more polar) based on their electron-donating or withdrawing ability from the rest of the molecule.Polarity of analyte: The analyte's polarity is directly proportional to the dipole moment of the functional group, which is associated with a difference in electronegativity between the atoms that make up the functional group.The electronegativity of an element is its ability to attract electrons towards itself. The greater the difference in electronegativity between two atoms, the more polar their bond, and hence the greater the polarity of the molecule.

To find the correct order of the increasing polarity of the analyte functional group, let's first compare the two groups: hydrocarbon ethers and esters. Here, esters have a carbonyl group while ethers have an oxygen atom with two alkyl or aryl groups. The carbonyl group has more electronegative oxygen, which pulls electrons away from the carbon atom, resulting in a polar molecule. On the other hand, ethers have a less polar oxygen atom with two alkyl or aryl groups, making them less polar than esters. Therefore, the correct order of the increasing polarity of the analyte functional group isEthers < Esters.

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The characteristics of nuclear reactions allow to find the answers for the different questions are:

1) The total number of protons

2) The number of protons changes

3) Spontaneous emission of radiation

4) Sew one piece of fabric to another and form a larger one

5) There must be an unstable nucleus form in stable nuclei

6) The nuclei combine in a fusion reaction

7) There are no charged released

Nuclear reactions are the process by which atoms transform into other atoms, we fear two types of reactions:

It is asked to make a selection of which are the correct statements, for the different questions

1) In a nuclear reaction the amount of protons remains invariant, the neutral ones can be released or absorbed

The correct answer:  The total number of protons

2) A particula alpha is a nucleus with 2 protons, two neutrons, so it always changes from one element to another

The correct answer is: The number of protons changes

3) as described radioactive decay.

It is the process by which particles or radiation are emitted from the atomic nucleus

The correct answer is: Spontaneous emission of radiation

4) Fusion is a process by which two nuclei unite and a larger one is formed

The correct answer is: sew one piece of fabric to another and form a larger one

5) What to take into account when creating a disintegration model.

A mechanism must be created that allows the particle emission from the nucleus with the decrease of the total energy of the system

The correct answer is: There must be an unstable nucleus form in stable nuclei

6) Difference between fusion and chemical reaction

In the fusion other atoms are formed, in the chemical reaction the atoms remain unchanged

The correct answer is: The nuclei combine in a fusion reaction

7) How to describe the charged particles in the fusion

in a fusion reaction in general no charged particles are released, so all charged particles (protons are in the new nucleus

there is not image

The correct answer should be: There are no charged released

In conclusion with the characteristics of nuclear reactions lets find the results to the questions are:

1) The total number of protons

2) The number of protons changes

3) Spontaneous emission of radiation

4) Sew one piece of fabric to another and form a larger one

5) There must be an unstable nucleus form in stable nuclei

6) The nuclei combine in a fusion reaction

7) There are no charged released

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Answer:

because the lighted splint is burnt and the water and carbon dioxide starts to explode

H₂O is the formula for this compound.

How is H₂O  prepared?

A water molecule (dihydrogen monoxide) is made up of two hydrogen atoms and one oxygen atom. But you can't just plonk two hydrogen atoms on top of an oxygen atom. The real water-making reaction is a little more complicated: 2H2 + O2 = 2H2O + Energy.

In English, the equation states that two molecules of diatomic hydrogen (H2) must be joined with one molecule of diatomic oxygen to generate two molecules of water (H2O) (O2). In the process, energy will be released.

"This reaction (2H2 + O2 = 2H2O + Energy) has been known for two centuries, but no one has made it work in a homogenous solution until now," said Thomas Rauchfuss, a chemical professor at the University of Illinois and the paper's corresponding author.

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C/ If Fe is greater than Fg, the negatively charged oil droplet will move freely toward the negatively charged plate.

In the Millikan oil droplet experiment, the negatively charged oil droplets are subjected to an electric field created by the charged plates. The electric force (Fe) acts on the oil droplet in a direction opposite to the gravitational force (Fg). When Fe is greater than Fg, the electric force overcomes the gravitational force, causing the negatively charged oil droplet to experience an upward force. As a result, the oil droplet moves freely upward toward the negatively charged plate.

Option B is incorrect because if Fe is equal to Fg, the forces balance each other, resulting in a stationary droplet. However, the question states that Fe is increased until it is greater than Fg, implying that the droplet is no longer stationary but moves in response to the electric force.

Therefore, option C is the correct answer, as it describes the effect of an electric field on the motion of a negatively charged oil droplet in the Millikan oil droplet experiment.

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Answer:

the higher the kinetic energy

Explanation:

because their will be easy movement of particles.

pH = -log[H3O+] = -log(8.26 x 10^-5) = 4.083 (three decimal places because the concentration had three sig figs)

Answer:

Diversity?

Explanation:

Think thats bio

Answer:

.

Explanation:

Explanation:

To find the freezing point of the solution using the freezing point depression (ATf) and the freezing point of water, we can use the equation:

FPsolution = FPwater - ATf

where FPwater is the freezing point of pure water (0.00 °C). We know that ATf for this solution is 5.58 °C, as found in the previous step. Therefore:

FPsolution = 0.00 °C - 5.58 °C

FPsolution = -5.58 °C

However, a freezing point below zero degrees Celsius is not physically possible, since water freezes at 0.00 °C. Therefore, the solution would not actually freeze at this temperature, and we need to round the answer to zero °C:

FPsolution ≈ 0.00 °C

Therefore, the freezing point of the solution is around 0.00 °C, or the solution will not freeze at this temperature.

A 3.500 x 103-year-old bristlecone pine's heartwood still contains 61.5 percent of the original carbon-14, and its half-life is 5.730 x 103 years. Having the chemical symbol C and atomic number 6.

Carbon is an element with the meaning "coal" in Latin. It is nonmetallic and tetravalent, meaning that four of its atom's electrons can be used to create covalent chemical connections. The periodic table's group 14 is where it belongs. Only approximately 0.025 is made up of carbon. A quantity (of substancehalf-life )'s (symbol t12) is the amount of time needed for it to decrease to half of its original value. The phrase is frequently used in nuclear physics to indicate how long stable atoms last or how quickly unstable atoms experience radioactive decay.

(A)/(Ao) = e^-kt

(A)/(Ao) = 0.615

(A)/(Ao) =  0.615*100 = 61.5 percent

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Among the options given, the hydrogen atom (H) is not one of the four groups attached to the alpha-carbon.

In an amino acid, the central (alpha) carbon is indeed bonded to four groups. These four groups are:

Amino group (-NH₂): This group consists of a nitrogen atom bonded to two hydrogen atoms. It is called the amino group and gives amino acids their name.

Carboxyl group (-COOH): This group consists of a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group (-OH). It is called the carboxyl group and is responsible for the acidic properties of amino acids.

Hydrogen atom (H): A single hydrogen atom is also attached to the central carbon.

Side chain (R group): The fourth group attached to the alpha-carbon is the side chain, also known as the R group. The side chain varies among different amino acids and gives each amino acid its unique properties.

Therefore, among the options given, the hydrogen atom (H) is not one of the four groups attached to the alpha-carbon.

The completed question is given as,

All amino acids share a common structure, a central (alpha) carbon with four groups attached. Which of these is NOT one of the four groups attached to the alpha- carbon?

an R group

an ammonium group (-NH³⁺)

a carboxylate group (-COO)

a hydrogen atom

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1. 8.5 mole of chlorine contains 8.5 x 6.023 x 10²³= 5.11x 10²⁴ atoms of chlorine. 2. 15.50 mole of oxygen has a mass of 15.50 x 16.00 g = 248.00 g. 5. The molar mass of cobalt is 58.93 g/mol.  6. The formula mass of Ca₃(PO₄)₂ is 310.18 g/mol.

Molar mass is the mass of one mole of a substance. It is a physical property and not a chemical property, and is measured in grams per mole (g/mol). The molar mass of a substance can be determined by adding together the atomic masses of each element present in the molecule. For example, one mole of carbon dioxide would have a molar mass of 44 g/mol, as it contains one 12 g/mol carbon atom and two 16 g/mol oxygen atoms.

Formula mass is the sum total of all the masses of the elements in a chemical formula. The formula mass of a compound is usually expressed in grams per mole (g/mol). It is calculated by add the atomic masses of all the atoms present in the formula, taking into account how many of each atom are present.

1. 8.5 mole of chlorine contains 8.5 x 6.023 x 10²³ = 5.11x 10²⁴ atoms of chlorine.

2. 15.50 mole of oxygen has a mass of 15.50 x 16.00 g = 248.00 g.

3. 1.953 x 108 g of helium contains 1.953 x 108 / 4.00 g/mol = 4.88x10⁷ moles of helium.

4. 147.82 g of sulfur contain 147.82 / 32.06 = 4.60x10²³ atoms of sulfur.

5. The molar mass of cobalt is 58.93 g/mol.

6. The formula mass of Ca₃(PO₄)₂ is 310.18 g/mol.

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Answer:

Different materials have different densities. So it is False

Answer:

The answer is False

18.3 g of solid precipitate formed during the reaction.

Formula of lead(ii) perchlorate = \(Pb(ClO4)_{2}\)

Formula of  sodium sulfate = \(Na_2(SO_4)\)

Reaction of lead(ii) perchlorate and sodium sulfate

\(Pb(ClO4)_{2}\) + \(Na_2(SO_4)\)    ---------->  \(PbSO_4(s)\)    + \(2Na(ClO4)_{2}\)

moles of  \(Pb(ClO4)_{2}\)  =  \(\frac{given mass}{ Molar mass}\)

molar mass of \(Pb(ClO4)_{2}\) =207+(35.5+ 16*4)*2

molar mass of \(Pb(ClO4)_{2}\) =207+ 99.5*2

molar mass of \(Pb(ClO4)_{2}\) =406

given mass = 33.17g

moles of  \(Pb(ClO4)_{2}\)  =  \(\frac{given mass}{ Molar mass}\)    

moles of  \(Pb(ClO4)_{2}\) =  \(\frac{33.17}{406}\)  

moles of  \(Pb(ClO4)_{2}\) = 0.0817 moles

molar mass of \(Na_2(SO_4)\)  = 2*23+ 32+ 4*16

molar mass of \(Na_2(SO_4)\)  = 46+32+64

molar mass of \(Na_2(SO_4)\)  = 142

moles of      \(Na_2(SO_4)\)  =      \(\frac{given mass}{ Molar mass}\)    

moles of      \(Na_2(SO_4)\) = \(\frac{8.564}{142}\)  

moles of      \(Na_2(SO_4)\) = 0.0603 moles

since in the above reaction \(Pb(ClO4)_{2}\) is the solid precipitate so we have to find the weight of \(PbSO_4(s)\) formed after the reaction.

Given that the reaction is complete so one of the 2 reactant must completely ends since \(Na_2(SO_4)\) have less number of moles than \(Pb(ClO4)_{2}\)  so , \(Na_2(SO_4)\) will disappear and hence according to Stoichiometry  same number of moles of \(PbSO_4(s)\) will form

so number of moles of \(PbSO_4(s)\) formed = 0.0603

so, the weight of \(PbSO_4(s)\) formed = number of moles formed * molar mass of \(PbSO_4(s)\)

so weight of \(PbSO_4(s)\) formed  =0.0603 * 303

weight of \(PbSO_4(s)\) formed= 18.27 g ≈ 18.3 g

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Answer: In Arizona, climate change is already making deadly heat waves, droughts and wildfires across the state worse. These impacts have real costs on Arizonans' health and economy, including heat-related deaths, higher electricity bills, crop losses and more.

Explanation:

https://www.edf.org/climate/costofinaction- this is where I gathered this info.  Not mine.  But I hope it helps!

Answer:

Verdadero.

Explanation:

¡Hola!

En este caso, dado que las propiedades periódicas nos hablan de un comportamiento específico sobre los elementos en la tabla periódica, resulta primeramente necesario recordar que la electornegatividad nos dice que tan fuerte es un elemento para atraer electrones de valencia de otros elementos.

De este modo, inferimos que es verdadero, ya que de hecho la electronegatividad nos define el tipo de enlace, basado en la diferencia de electronegatividades de los elementos enlazados, de acuerdo con la imagen adjunta.

Saludos!

Answer:

Polar Covalent Bonding.

Explanation:

Polar Covalent Bonding. A water molecule is formed when two hydrogen bonds covalently (sharing of electrons) with an oxygen atom. It is polar because there is unequal distribution of the electrons between the oxygen and hydrogen atom.

Answer:

The probability  of spinning red with the spinner or rolling an odd number with the  die is \(\dfrac{1}{8}\)

Explanation:

Given that,

Total color in spinner = 4

Let the area of four parts is equal in the spinner.

We need to calculate the probability of spinning red

Using formula of probability

\(P(A) = \dfrac{Number\ of\ red\ color\ outcome}{Total\ number\ of\ colors\ in\ the\ spinner}\)

Put the value into the formula

\(P(A)=\dfrac{1}{4}\)

We need to calculate the probability of odd number of the die

Using formula of probability

\(P(B) = \dfrac{Number\ of\ odd\ digits\ outcome}{Total\ number\ of\ digits\ in\ the\ die}\)

Put the value into the formula

\(P(B)=\dfrac{3}{6}\)

\(P(B)=\dfrac{1}{2}\)

We need to calculate the probability  of spinning red with the spinner or rolling an odd number with the  die

Using formula of probability of two events which is independent

\(P(A\ and\ B)=P(A)\times P(B)\)

Put the value into the formula

\(P(A\ and\ B)=\dfrac{1}{4}\times\dfrac{1}{2}\)

\(P(A\ and\ B)=\dfrac{1}{8}\)

Hence, The probability  of spinning red with the spinner or rolling an odd number with the  die is \(\dfrac{1}{8}\)

Answer:

Explanation:

vacuole -used to storage

Answer:

Solid

Liquid

Gas

Hope this helps :)

- jp524

Scientific theories are always testable. A theory may be changed as a result of new observations.

A scientific theory is a set of laws, facts and hypotheses that have a complete vision of an aspect of reality.

It is a proposed explanation for a set of observable phenomena.

It allows in this way to organize and understand the observations and to be able to predict or provoke other future observations.

Theories can be modified or improved as more information is collected.

That is, theories can continue to be tested indefinitely, and eventually rejected, if the tests lead to it.  

Therefore, a scientific theory is testable by using a research method.

As mentioned, any theory can be tested or rejected as more information is collected.

This information to prove or reject theories are interpretations of observable facts, which generates new statements or allows to accept those already included in the theory.

Then, a theory may be changed as a result of new observations.

Finally, scientific theories are always testable. A theory may be changed as a result of new observations.

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Answer:

testable & new observations

Explanation:

Answer:

Principle of Original Horizontality

Answer:

780 watts

Explanation:

formula to find power when given amps and voltage

P = A x V

=6.50a x 120V

= 780 W (watts)

Answer:

B.) A mixture can be separated by physical means.

Explanation:

While it may be difficult, mixtures can be separated back into their original elements/compounds. Compounds cannot be separated because their original elements/compounds bond together to form the new compound. The only way to separate compounds is through chemical (or drastic physical) means.