a helium gas balloon has a volume of 1 m3 and a gas pressure of 1.2 atm. when it is high in the sky, the volume increases to 2 m3. assuming the gas temperature does not change and there is no gas leakage, the gas pressu

1. Energy level is the discrete energy value possessed by an electron when it is in an orbital.

2. Sublevel is part of a main energy level consisting of one or two more electrons of the sublevel energy

In quantum chemistry, the electrons' state of motion within the electrostatic field produced by stationary nuclei is referred to as their electronic structure. Both the electrons' wave functions and the energies connected to them are covered by this phrase. In order to solve the aforementioned clamped-nuclei problem, quantum mechanical equations must be solved.

The Born-Oppenheimer approximation leads to problems with the electronic structure. One of the two steps in understanding a molecular system's quantum mechanical motion is the electronic structure problem, along with nuclear dynamics. Most electronic structure problems require the use of modern computers, with the exception of a small number of straightforward issues like atoms that resemble hydrogen.

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Answer:

d. 7

Explanation:

3CO2 => 3 x 2 => 6 atoms

H20 => 1 => 1 atoms

Answer:

both the original and the new genes

Explanation:

The chirality of center is c, d and e are chiral center

Chirality means that an object or molecule cannot be superimposed on its mirror image by any translations or rotations

According to given data the c is the attached to the carbon bonded to nitrogen and a dashed bond to CH₂ OPO₃ and a CH₂ bonded to a nitrogen so it is chiral center and then d  is a nitrogen bonded to a wedged bond to hydrogen a dashed bond to a carbon and two in plane bonds to two other unique carbons that's why d is also the chiral center and then e atom is a carbon with a wedged bond to a carbon a bond to nitrogen and an in plane bond to a carbonyl so e is also the chiral center of the given compound

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There is nothing that can be done to cause the sub to sink to the bottom of the tub because the boat displaces more water than it weighs, it's already on its way down.

It is a common observation that there are some substances that are able to float in water. This implies that they have the ability to remain above water and be carried by the water from place to place.

We know that an object would float in water when the weight of the object is equal to the weight of water that is displaced by the object. If the objects tends to displace more water than it weighs, the object would sink in water.

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Missing parts:

expert that helps you learn core concepts.

See Answer

Here we have a toy submarine floating in a bathtub. It's a really fancy sub, made out of steel. The sub weighs one pound. When completely submerged, it displaces two pounds of water.

What could you do to cause the sub to sink to the bottom of the tub?

a)Add one pound of sand to the sub's interior.

b)Add one pound of sand to the sub's interior, plus a little more.

c)Nothing. Since the boat displaces more water than it weighs, it's already on its way down.

I know the answer is B but I cant figure out how to explain why with another example

Based on the information in this passage, the option that is a reasonable conclusion is option A- Scientists will never change the classification system again.

The term classification might refer to the process of classifying a final set of classes the process of allocating elements to pre-defined classes In the broad sense described above, classifying is a fundamental idea and a component of practically all types of activities.

As more and more new creatures are found, the new approach must be applied to classify them. To categorize species based on their shared traits, a new classification system is continually established.

From the passage, there have been a lot of changes made to the classification and the scientist have seen that the naming as well as classifying organisms is a tricky act and what they have done seems justified.

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See passage below

What’s in a Name?

(Lexile 670L)

Shakespeare wrote in Romeo and Juliet, “What’s in a name?

That which we call a rose by any other name would smell

as sweet.” He is saying that it doesn’t matter what we call

something. While it may not matter to fiction writers, names

are very important to scientists. Scientists need a way to

sort and classify groups of life forms. How scientists do

that has changed over time. As we learn more and more

about the world around us, classifications are updated.

2 As science learns more about the characteristics of organisms, we have gotten better at

classifying them. The most basic level of classification is prokaryote and eukaryote.

Prokaryotes are organisms that don’t have a nucleus. They also don’t have any other cell

structures surrounded by membranes. They are species of bacteria and archae. Eukaryote

cells have a nucleus and complex parts enclosed within membranes. The organisms that we

know by sight are all eukaryotes. They are animals, flowers, mushrooms, and protists.

3 A domain is the largest rank of organism. There are three domains: Eukarya, Bacteria, and

Archaea. Eukarya is the domain for all eukaryotes. These organisms have a cell nucleus and

a membrane that encloses a complex structure. Most of what we think of as “animals” are in

this domain. It includes all plants, fungi, and protists. Bacteria is the domain made of bacteria.

These prokaryotes include the oldest fossils on Earth.

Every living being on the planet falls into one of these three domains. All eukaryotes are a part

of the Eukarya domain. All bacteria are a part of the Bacteria domain. All of archaea fall into

the Archaea domain.

5 The next smallest rank of organism is kingdom. The eukaryotic kingdoms are: Animalia, Fungi,

Plantae, and Protista. The prokaryotic kingdoms are Eubacteria and Archaea. Organisms are

sorted into kingdoms based on how complex their cells are and how they obtain nutrients and

reproduce. Naming and classifying organisms is a tricky process. Scientists must make changes to keep

up with new discoveries and information. Knowing the basics can help you think like a scientist when you read about life science.

Based on the information in this passage, which of the following is a reasonable conclusion?

A- Scientists will never change the classification system again.

B- Scientists know everything there is to know about all organisms.

C-Scientists have never changed the classification system.

D-New scientific discoveries could change the current classification system.

prove the statement about the PCR cycle

What is PCR cycle?

PCR is a laboratory techniques for rapidly producing millions of copies of a species.

So pcr goes through 3

different steps in integration, finaline and elongation. So first is denaturation and this happens at 95 degrees celsius, and this is where the template dana is requiredand. Then the stiffest step is the nailing, and this happens at 55 degrees celsius, and this is where primers are needed. That will attach to specific sequences of d and a that are needed to start elongation. So each step is kind of preparing for the next step. In the process, and then the third step is elongation and this happens at 65 degrees celsius and it requires the use of attack.

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The total pressure become 1.514 atm

According to Dalton's Law of Partial Pressures, the partial pressure of a gaseous component in a gaseous mixture is equal to the pressure that the component would produce if it inhabited the container alone.

hence,

[tex]P_{mixture} = P_{A} + P_{B} +P_{C}[/tex]

We are given [tex]P_{A}[/tex]and[tex]P_{B}[/tex], but we must determine [tex]P_{C}[/tex]. We may do this by assuming ideality and using the following formula:

[tex]P_{C}= \frac{0.110 mol . 0.0821 . 326}{9.10} =0.323atm[/tex]

[tex]P_{mixture} = P_{A} + P_{B} +P_{C}[/tex]

              =0.324 + 0.867+0.323

              =1.514 atm

The total pressure become 1.514 atm

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Plate tectonics is supported by the distribution of fossils. The graphic depicts how four distinct fossilised species were distributed over three continents.

How the plates originally fit together is shown by evidence from fossils, glaciers, and adjacent coasts. Plants and animals formerly lived there, and fossils show us when and where.

According to the idea of plate tectonics, the mantle is covered by a number of different plates that make up the Earth's crust. Compared to the mantle of the Earth, the plates behave like a solid, rigid shell. The lithosphere is this thick outer layer. Continental drift has been replaced by plate tectonics.

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According to the given statement if the mass of the stone was 25g was its density 5 g/cm³.

Density is the ratio of a material's mass to its volume. The formula for density is d = M/V, where d denotes density, M is mass, and V is volume. Density is typically measured in grams per cubic centimeter.

Despite the fact that the SI unit of density is kg/m3, we instead use g/cm3 for solids, g/ml for liquids, and g/L for gases out of convenience.

Mass = 25 g

Volume = 7 mL – 2 mL

Volume = 5 mL

Volume = 5 cm³

Density = mass/volume

Density = 25 g/5 cm³

Density = 5 g/cm³

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Taking into account the reaction stoichiometry, the correct answer is the third option: 1.25 grams of propane is necessary to react with 4.53 grams of oxygen.

In first place, the balanced reaction is:

C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: If by reaction stoichiometry 160 grams of O₂ react with 44 grams of C₃H₈, 4.53 grams of O₂ react with how much mass of C₃H₈?

mass of C₃H₈= (4.53 grams of O₂× 44 grams of C₃H₈)÷ 160 grams of O₂

mass of C₃H₈= 1.25 grams

Finally, 1.25 grams of C₃H₈ is required to react with 4.53 grams of O₂.

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Answer:C. 1.25 g C3H8

Explanation:…

The law of conservation of mass hold true in this case.

Mass of magnesium = 48 g

Mass of product = 80 g

Total mass of the reactants = Total mass of the products

The balanced chemical reaction for the burning of magnesium strip in air follows:

[tex]2Mg + O_2 \rightarrow 2MgO[/tex]

Mass of the reactants = Mass of Mg + mass of [tex]O_2[/tex]

Mass of the products = Mass of MgO

Putting values in the equation:

Mass of [tex]O_2[/tex] = 80 - 48 = 32g

The latent mass of the reactant is the mass of oxygen consumed. Thus, the formation of magnesium oxide follows laws when magnesium is burned.

The law of conservation of mass, or the principle of  conservation of mass, states that in any system that is closed to all  matter and energy transfers, the mass of the system must remain unchanged over time, because the  mass of the system cannot change. , so the amount cannot be increased or decreased. will be deleted. Therefore, the amount of mass is conserved over time.

The law means that mass cannot be created or destroyed, although it can be moved in space or its related entities transformed. For example, in chemical reactions, the mass of the chemical components before the reaction is equal to the mass of the components after the reaction. Thus, in all chemical reactions and low-energy thermodynamic processes in an isolated system, the total mass of the reactants or reactants must  equal  the mass of the products.

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     Lewis structure, sometimes referred to as Lewis dot structure or electron dot structure, is an easy way to depict the electrons in the outermost shell of a chemical species, such as an atom, ion, or molecule.

       Lewis structures, often referred to as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDS), are diagrams that depict the interactions of atoms inside molecules as well as any lone pairs of electrons that may be present.

     A Lewis structure is a visual representation of the electron distribution around atoms. To forecast the quantity and type of bonds that might form around an atom, Lewis structures must be drawn. The geometry of a molecule can also be predicted using a Lewis structure.

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Answer:

A. population growth rate

Explanation:

ignore C. and D., these aren't even related to geography. (oh and by the way, this isn't a chemistry question, it's a geography question)

B isn't the answer either because the question includes "immigration rates". this means that survivorship would only be about the people already inside an area, and forgetting about people who travel into it

Absorbance (A) and   [tex][FeSCN2^{+}][/tex]  of the solution is 1.041

Transmittance=0.091

Absorbance (A) and  [tex][FeSCN2^{+}][/tex] of the solution  is calculated by:

A=-log( T), where T = 0.091

A=-log(0.091)

A=1.041

Absorbance (A) and   [tex][FeSCN2^{+}][/tex]  of the solution is 1.041

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Answer:

nitrogen and carbon because there diffusion rate is high

Answer:

about 12 cm

Explanation:

Considering the frequency of 2,450 MHz, the wavelength of microwave oven radiation is about 12 cm and the quantum energy of a microwave photon is about 1 x 10-5 eV.

The specific heat of this metal is 0.385  J/g ∘ C.

What is Specific heat?

The amount of heat needed to raise a substance's temperature by one degree Celsius in one gramme, also known as specific heat. Typically, calories as well as joules per gramme per degree Celsius are employed as the units of specific heat. For instance, water has a specific heat of 1 calorie (as well as 4.186 joules) per gramme per degree Celsius. The Scottish scientist Joseph Black, inside the 18th century, started to notice that equal masses of various substances needed various amounts of heat to raise people through the same temperature range, and, from in this observation, he founded this same concept of specific heat. Early in the 19th century, French physicists Pierre-Louis Uniformly as well as Alexis-Thérèse Petit proved that calculating a substance's atomic weight is possible by measuring its specific heat.

Given: m=2800g;△t=35 - 22 = 13C ;

Q=14,014 J

Now, Q=mc△t

14,014=2800×C×13

Specific heat capacity of the metal,

c = 14,014/2800x 13

​=0.385 J/g ∘C

Hence, the specific heat of this metal is 0.385  J/g ∘ C.

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Convection is a type of heat transfer in which a fluid experiences an energy transition. Radiation refers to the process by which heat is transferred between objects without direct physical contact.

Through the process of conduction, heat is transferred directly from one object to another. Convection is a type of heat transfer in which a fluid experiences an energy transition. Radiation refers to the process by which heat is transferred between objects without direct physical contact.

Direct contact between the objects is how heat is transferred during conduction. The heat is transferred within the fluid during convection. Heat transfer in radiation happens through electromagnetic waves without the use of particles. The temperature difference causes heat transfer to occur.

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The season on earth is constantly changing from one form to another in a cycle that occurs over and over again

Earth is the fragmental material composing part of the surface of the globe and earth's tilted axis causes the seasons  throughout the year in different parts of earth receive the sun most direct rays so when the north pole tilts toward the sun it's summer in the northern hemisphere and when the south pole tilts toward the sun it's winter in the northern hemisphere

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Answer:Both protons and neutrons have a mass of 1

Explanation:

Answer:

Protons and neutrons are both subatomic particles, which means they are both components of atoms. Protons and neutrons are found in the nucleus of an atom. They both have mass of 1 amu.

Explanation:

Answer:

3

Explanation:

A nitrogen atom has 3 unpaired electrons

The electron configuration for Fe with 26 electrons is:

The electronic configuration of an elemnet is the arrangement of electrons in electron orbits or energy levels around the nucleus of an atom of the element.

The electronic configuration shows the number of electrons that are found in an atom of the element.

The electrons in an atom are filled into orbitals.

The four orbitals to which electrons in an atom can be accommodated are:

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The frequency of a wave is V = 4.4 x [tex]10^{2}[/tex] [tex]s^{-1}[/tex].

The visible light spectrum is the part of the electromagnetic spectrum that can be seen by the human eye. This wavelength range is simply called visible light. Normally the human eye can see wavelengths between 380 and 700 nanometers. Visible light made up of the individual colors of the rainbow is only a small part of the electromagnetic spectrum. Another kind of light is radio waves.

The wavelength of light waves is approximately 400 to 700 nanometers 4,000 to 7,000 angstroms. Our eyes perceive different wavelengths of light as rainbow colors. Red light has a relatively long wavelength approximately 700 nm in length. Blue and violet light have short wavelengths of about 400 nm and the visible light spectrum is part of the spectrum of electromagnetic radiation visible to the human eye.

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The traits that are effected by the X or the Y chromosomes are s--ex linked.

We know that animals are composed of cells. The cells have different parts that are contained in the cells and these parts of the cells are what we call the organelles of the cell. The organelles of the cell just helps the cell to perform its functions. The cell is the simplest unit of life that we have.

Now one of the organelles in the cell is the chromosome. This is the organelle that contains the gene. It gene is the unit of inheritance. Let us know that this unit of inheritance is passed from the parents to the offspring.

Let us then bear in mind that hen a trait is affected by a gene on either on the X or Y Chromosomes, which inheritance pattern is being described as s--ex linked.

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Considering the Combined Law Equation, the pressure of Cl₂ if the volume is increased to 0.800 l and the temperature increased to 55 °C is 114.367 mmHg.

Boyle's law states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant: if the pressure increases, the volume decreases while if the pressure decreases, the volume increases.

Mathematically, this law is expressed as:

P×V= constant

Gay-Lussac's law states that the pressure of a gas is directly proportional to its temperature when the volume is constant: increasing temperature increases pressure, while decreasing temperature decreases pressure.

Mathematically, this law is expressed as:

P÷T= constant

Charles's law states that the volume is directly proportional to the temperature of the gas when the pressure is constant: if the temperature increases, the volume of the gas increases while if the temperature of the gas decreases, the volume decreases.

Mathematically, this law is expressed as:

V÷T= constant

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

(P×V)÷T= constant

Considering an initial state 1 and a final state 2:

(P₁×V₁)÷ T₁= (P₂×V₂)÷ T₂

In this case, you know:

Replacing in Combined law equation:

(475 mmHg× 0.175 L)÷ 298 K= (P₂× 0.800 L)÷ 328 K

Solving:

[(475 mmHg× 0.175 L)÷ 298 K] × (328 K÷ 0.800 L)= P₂

114.367 mmHg= P₂

Finally, the new pressure will be 114.367 mmHg.

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Answer:Water is entirely composed of hydrogen and oxygen Being composed of such elusive and invisible elements

Explanation:this is helped to be clear by oxygen and invisible elements like nutrients