Use the scenario to answer the question. a student is examining scientific evidence to support the following claim. ""life is possible because of the unique mixture of gases that cycle through the earth’s spheres."" which evidence best supports the student’s claim?

Answer:

different sizes of the parachute

Explanation:

this is what is being changed throughout the experiment

Based on the information provided, the argument that is supported is:

C. This gene therapy method can help improve vision in some patients with the defective gene.

Gene therapy is a medical approach aimed at treating or preventing genetic disorders by modifying the genetic material of an individual's cells. It involves introducing functional genes or altering existing genes within the cells of a patient to correct or compensate for a genetic mutation or abnormality.

The given information implies that the gene therapy method discussed is effective in addressing a defective gene that impacts vision. Therefore, it suggests that the gene therapy method has the potential to improve vision in individuals with the specific genetic condition.

Hence, C. This gene therapy method can help improve vision in some patients with the defective gene is correct.

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Answer:

photosynthesis

Explanation:

Answer:

The answer is

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

\(volume = \frac{mass}{density} \)

From the question

mass of substance = 5668 g

Density = 3.56 g/mL

The volume is

\(volume = \frac{5668}{3.56} \\ = 1592.1348314\)

We have the final answer as

Hope this helps you

the burning of fossil fuels

The mass in grams of butane at standard room temperature is 53.21 grams.

The gram of an organic substance at room temperature can be determined by using the ideal gas equation which can be expressed as:

PV = nRT

1 × 22.4 L = n × (0.0821 atm*L/mol*K×  298 K)

n = 22.4/24.4658 moles

n = 0.91556 moles

Recall that:

mass of butane = 0.91556 moles × 58.12 g/mole

mass of butane = 53.21 grams

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The needed volume of water with Molarity 12 M for the dilution of solution of 12 M hydrochloric acid is equals to the 250 mL.

Initial Volume of hydrochloric acid, HCl = 50 mL

Molarity or initial concentration of hydrochloric acid= 12 M

Final concentration of solution = 2.0M

We have to determine the water will you need for dilution. Molarity is a chemistry term, which used to measure the quantity. According to dilution law, \(C_1V_1 = C_2V_2 \)

Here, C₁ = 12 M , V₁ = 50 mL, C₂ = 2.0M, V₂ = final volume

Substitute all known values in above equation, 12 M × 50 mL = 2.0 M × V₂

=> V₂ = 600/2 mL

=> V₂ = 300 mL

So, final volume of solution is 300 mL.

Now, the needed volume of water = final volume - initial volume = 300 mL - 50 mL

= 250 mL. Hence, required value of volume is 250 mL.

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Answer: C

Explanation:

The density of the material which is the ratio of the mass and volume of the material is 10g/cm³

The density of a material is obtained using the relation ::

The density of the material can be obtained by obtaining the slope of the graph :

Therefore, the density of the materials is :

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Answer:

l think gasoline and electric

Answer:D

Explanation:Each time state transforms into a solid matter thus a physical property is the answer.BRAINLIEST PLEASE

The correct option is C;  II and III

The gases obtained from a landfill sites are ammonia, hydrogen sulfide, methane, and carbon dioxide.

Of these gases, ammonia and hydrogen sulfide are responsible for the odor at  landfill sites.

The odor from burning landfill gas can have deleterious effects on the health of residents owing to its smelly odors.

Also, many air pollutants are produced when the constituents of landfill gas  are burnt.

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Answer:

Molecules of H2O

Explanation:

Frost is condensed vapour and vapour is gaseous water. So, their particles are made up of same particles as water, i.e., H2O.

The third law of thermodynamics describes the entropy of a: solid.

The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.

The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.

In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.

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Answer:

(d)

Explanation:

The correct statement is the density of ice is less than that of water. Therefore, option D is correct.

Water has a higher density than ice because its molecules are more tightly packed. Don't be fooled by the fact that ice is a solid. Water expands as it freezes. As a result, ice has a higher volume than water.

Because the orientation of hydrogen bonds causes molecules to push farther apart, ice is less dense than water.

Other liquids' solid states are denser because the molecules pack together tightly as the kinetic energy (temperature) decreases. Although the hydrogen bonds in water ice are strong, their orientation causes molecules to push apart, lowering density.

Thus, option D is correct.

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Answer:

a) 1.567 x 10^9

b) 2.36 x 10^(-5)

The volume of stock solution needed is 50mL when a student is set to prepare 250.0 mL of 0.100 M \(CuSO_4\) from a 0.500 M stock solution.

Given the initial concentration of \(CuSO_4\) solution (M1) = 250mL

The initial volume of \(CuSO_4\) solution (M1) = 0.100M

The final concentration of \(CuSO_4\) = V2

The final concentration of \(CuSO_4\) (M2) = 0.500M

We know that molarity also known as molar concentration, is a measure of the concentration of a solute in terms of moles per liter of solution. It is also useful for comparing different solutions and for calculating the amount of a reactant needed in a reaction.

M1*V1 = M2*V2 = constant such that:

0.25 * 0.100 = 0.500 * V2

V2 = 0.05L = 50mL

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Answer:

0.16 mol

Explanation:

you will use the ideal gas law PV=nRT where R is approximately 0.082 atm×L/mol×K

PV=nRT

n=PV/RT

n=0.8×5.2/0.082×315

n=0.16 mol

Answer: Aluminum Carbonate

Explanation:

Answer:

Aluminum carbonate.

Explanation:

It is an aluminum salt form of carbonic acid.

Regioselectivity is the preference of chemical bonding or breaking in one direction over all other possible, stereospecific mechanism specifies the stereochemical outcome of a given reactant.

Regioselectivity occurs when two possible reaction products are regioisomers. Stereoselectivity exists when two possible reaction products are stereoisomers. Chemoselectivity occurs when a reactant within a substrate prefers one functional group over another. Markovnikov's law predicts the regiochemistry of his HX addition to unsymmetrically substituted alkenes.

The Zaitsev and Hoffman rule describes the principle of regioselectivity in elimination reactions. Regioselective means that the reaction selectively produces one regioisomer as the major product. The two alkenes are positional isomers because the double bonds are in different regions. A process that favors bond formation at certain atoms over other possible atoms.

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A statement that explains, asserts, or predicts on the basis of statements (known as reasons) that are offered as evidence for it is called an argument.

An argument is a logical and structured presentation of a claim or assertion supported by reasons or evidence. It aims to persuade or convince others of the validity of the claim.

The main components of an argument include the claim itself, the reasons or evidence provided to support the claim, and the logical relationship between the claim and the reasons.

In an argument, the claim is the main statement being made, while the reasons serve as the supporting statements or evidence that back up the claim. The reasons provide logical connections and justification for accepting the claim as true or valid. By presenting coherent and persuasive reasoning, an argument seeks to establish the credibility and validity of the claim being made.

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Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$

Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$

The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.

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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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Answer:

Ca2+ is cation

Explanation:

Because cation contain positive charge.

By investigating the origins of various diseases, scientists play a key role in hospitals. They aid in understanding the underlying processes, risk factors, and potential therapies for many illnesses through their scientific knowledge and research techniques.

To understand the intricacies of diseases , their study involves running tests, analysing data, and working with other medical specialists. By figuring out the underlying reasons, scientists make it possible to create efficient diagnostic equipment, therapeutic methods, and preventative techniques .

Their discoveries and techniques expand medical knowledge, improve patient care, and ultimately work towards communities and people experiencing greater health. There are very factors that contribute to the overall institution.

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Answer:

when you boil water, you convert it into water vapor, which leaves the pot and mixes with the atmosphere. If you boil the pot long enough, eventually all the water in it is converted to vapor and leaves. the pot is then empty.

Explanation:

When we boil water, the level of liquid decrease is based on the phenomenon of the phase transition, which is a physical change as no new compound is forming.

Phase transition is a process in which transition takes place from one state to another of a medium on changing temperature or pressure.

During phase transition temperature remain constant as the extra heat that is given to the system that goes into breaking of intermolecular forces of attraction between the particles. So overall temperature remains same but heat keeps on increasing.

Phase transition of water from liquid to vapors on heating starts  at 100°C.  Water changes into vapors. Vapors goes into the atmosphere leaving the surface of water. Thus the level of liquid decrease as we boil water.

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Answer:

ZnS

Explanation:

Because there are two tetrahedral holes per anion (sulfide ion) and one-half of these holes are occupied by zinc ions, there must be 1 2 1 2 × 2, or 1, zinc ion per sulfide ion. Thus, the formula is ZnS. Check Your Learning

Answer:

chemical composition