PLEASE HELP ASAP. In terms of changes in particle motion and thermal energy, how does condensation differ from evaporation?

The mass of eicosadienoic acid, in grams, in thisorchid sample is 0.0084 grams.

In this particular question, we are asked for the mass of eicosadienoic acid, in grams, in a 12-gram sample of an orchid plant based on an estimate that 0.07% (percent by mass), of the sample consists of this fatty acid. To solve this problem, we can use a simple proportion:

0.07/100 = x/12

where x is the mass of eicosadienoic acid, in grams, in the 12-gram sample. To solve for x, we can cross-multiply and simplify:

0.07 × 12 = 100 × x

0.84 = 100x

x = 0.0084 grams

Therefore, the mass of eicosadienoic acid in the 12-gram sample of the orchid plant is 0.0084 grams.

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The galaxy is the component of the universe which  contains all of the other components and would have the greatest mass.

A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity.The word is derived from the Greek galaxias , literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars,each orbiting its galaxy's center of mass.

Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies.

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Answer:

The process in which we breathe out carbon dioxide and breathe in oxygen.

Explanation:

The molecular formula of the compound with a known molecular weight of 58.1 g/mol cannot be determined with just this information.

The molecular weight of a compound can be calculated by summing the atomic weights of all the atoms present in the molecule. However, the molecular weight alone does not provide information about the specific types or numbers of atoms in the compound.

Therefore, more information is needed, such as the elemental composition of the compound, to determine its molecular formula.

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Answer:

A. It increases the concentration of OH in solution.

Explanation:

Answer:

B. It increases the concentration of Hi in solution.

Explanation:

A.p.e.x

If the volume is reduced, it then follows that; more N2,H2,NH3 would be produced until a new equilibrium position was reached.

We know that a dynamic equilibrium occurs when the rate of forward reaction is equal to the rate of  reverse reaction. In that case, the reactants disappear at the same rate as the products appear.

Now, we have the reaction; N₂(g) + 3H₂(g) → 2NH₃(g) In which case, the volumes to the left hand side of the reaction equation is smaller than the volume to the right hand side of the reaction equation.

If the volume is reduced, it then follows that; more N2,H2,NH3 would be produced until a new equilibrium position was reached.

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2-hexanone is more reactive than 3-hexanone.

The reactivity of a ketone can be influenced by the position of the carbonyl group relative to the alkyl substituents. In the case of 2-hexanone and 3-hexanone, the position of the carbonyl group differs.

2-hexanone has the carbonyl group located on the second carbon of the hexane chain, whereas 3-hexanone has the carbonyl group on the third carbon. The reactivity of ketones typically increases as the carbonyl group is closer to the end of the alkyl chain.

In this case, 2-hexanone has a more reactive carbonyl group than 3-hexanone because it is closer to the end of the carbon chain. The proximity to the end of the chain allows for greater accessibility and interaction with nucleophiles during reactions.

The increased reactivity of 2-hexanone can be attributed to the greater electronic and steric effects experienced by the carbonyl group, which make it more susceptible to nucleophilic attack or other chemical transformations compared to 3-hexanone.

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Answer:Nucleic acid,glucose,and amino acids

The concentration of nitrogen 2 mm from the surface after 25 hours is approximately 0.0198 wt%.

To find the concentration of nitrogen 2 mm from the surface after 25 hours, we can use Fick's second law of diffusion. The formula is given by:

C(x, t) = C0 * erfc((x / (2 * sqrt(D * t)))

Where:
C(x, t) is the concentration at a distance x from the surface at time t
C0 is the initial concentration at the surface
erfc is the complementary error function
D is the diffusion coefficient
x is the distance from the surface
t is the time

Given:
Initial concentration, C0 = 2 wt% = 0.02
Diffusion coefficient, D = 2.8 x 10^-11 m^2/s
Distance from the surface, x = 2 mm = 0.002 m
Time, t = 25 hours = 25 * 3600 seconds = 90000 seconds

Substituting these values into the formula:

C(0.002, 90000) = 0.02 * erfc((0.002 / (2 * sqrt(2.8 x 10^-11 * 90000))))

Evaluating this equation, we find that the concentration of nitrogen 2 mm from the surface after 25 hours is approximately 0.0198 wt%.

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That is true he was known as the hair buyer

Answer:

its true.

i did it on edg 2020

The balanced equations for the complete combustion of butane, cyclohexane, and 2,4,6-trimethylheptane:

Butane

C₄H₁₀ + 13 O₂ → 4 CO₂ + 5 H₂O

Cyclohexane

C₆H₁₂ + 9 O₂ → 6 CO₂ + 6 H₂O

2,4,6-Trimethylheptane

C₁₀H₂₂ + 16 O₂ → 10 CO₂ + 12 H₂O

The balanced equations for the complete combustion of these hydrocarbons can be written by following these steps:

In the case of butane, there are 4 carbon atoms on the reactant side and 4 carbon atoms on the product side, so no coefficients are needed to balance the carbon atoms. There are 10 hydrogen atoms on the reactant side and 5 hydrogen atoms on the product side, so we need to add a coefficient of 2 to H₂O to balance the hydrogen atoms. There are 13 oxygen atoms on the reactant side and 5 oxygen atoms on the product side, so we need to add a coefficient of 2 to O₂ to balance the oxygen atoms.

The balanced equation for the complete combustion of butane is shown above. The balanced equations for the complete combustion of cyclohexane and 2,4,6-trimethylheptane can be written using the same steps.

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Answer: yes

Explanation: Light is simply a wave with a specific wavelength or a mixture of wavelengths; it has no color in and of itself. An object that is emitting or reflecting light to our eye appears to have a specific color as the result of the eye-brain response to the wavelength.

The question is about finding the concentration of a substance after seven half-lives if it has a concentration of 5.80 M at the beginning of the reaction. substance will be 0.0906 M after seven half-lives.

The half-life of a substance is the time it takes for half of it to decay. After five half-lives, the concentration becomes 0.181 M. After six half-lives, the concentration becomes 0.0905 M. After seven half-lives, the concentration becomes 0.0453 M. Therefore, the concentration of the substance will be 0.0906 M after seven half-lives.The formula to find the concentration after a certain number of half-lives is given as:Final concentration = Initial concentration x (1/2)number of half-livesGiven,Initial concentration = 5.80 MNumber of half-lives = 7The formula to find the final concentration becomes:Final concentration

= 5.80 M x (1/2)7

= 5.80 M x 0.0078125

= 0.0453 M (rounded to four significant figures)

The concentration of the substance after one half-life is 2.90 M.

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Answer: nitrogen and carbon dioxide

Explanation: I hope this helps :)

You take in that you need to make a decision. Try to notice and define the nature of the decision you must make. This first step is very important.

Decision-making requires the identification and selection of alternatives on the basis of values, linking, requirements, and beliefs. To begin the procedure objectives must be defined, classified, and ordered in the order of their importance. Decision-making involves the recognition and selection of alternatives on the basis of values, preferences, concerns, and beliefs.  Decision-making means selecting a course of action from two or more alternative strategic decision-making (SOM) is of great and growing importance.

So we can conclude that attribute of Decision Making · It is a process of selecting a course of action from among the alternative courses of action.

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The percentage yield is equal to 200.6%.

The balanced equation for the given chemical reaction is :

2C2H + 5O2 → 4CO2 + 2H2O

Let's find the limiting reagent:

Mass of C2H = 120 g

Mass of O2 = 288 g

Molar mass of C2H = 26 g/mol

Molar mass of O2 = 32 g/mol

The number of moles of C2H is equal to:

120 g × 1 mol/26 g = 4.62 mol

The number of moles of O2 is equal to:

288 g × 1 mol/32 g = 9 mol

According to the stoichiometry of the balanced equation, 2 moles of C2H react with 5 moles of O2, so:

If 4.62 moles of C2H is used, then the required amount of O2 would be:

5/2 × 4.62 mol = 11.6 mol

We only have 9 mol of O2 which means it is the limiting reagent.

C2H is the excess reagent.

Let's find the mass of water produced:

According to the stoichiometry of the balanced equation,2 moles of H2O is produced per 2 moles of C2H2 moles of H2O is produced per 5 moles of O2If 9 mol of O2 is used, the number of moles of water produced would be:

2/5 × 9 mol = 3.6 mol

The mass of water produced is equal to:

3.6 mol × 18 g/mol = 64.8 g

Therefore, 64.8 g of water can be produced.

The amount of excess reagent is equal to:

4.62 mol - 2/2 × 9 mol = 4.62 - 9

= -4.38 mol

C2H is the excess reagent and it is not possible to have negative amount of a substance.

So, we assume that there is no excess reagent.

If 130 grams of water is produced, then the percentage yield is equal to:

Percent yield = actual yield/theoretical yield × 100

Theoretical yield is equal to 64.8 g

Actual yield is equal to 130 g

Percent yield = 130/64.8 × 100

= 200.6%

Therefore, the percentage yield is equal to 200.6%.

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Given :

A compound is found to be made up of 3.21 g Carbon and 1.02 g Oxygen.

To Find :

The percent composition from this data.

Solution :

We know, percentage composition is given by :

\(\%mass = \dfrac{mass}{mass of compound}\times 100\)

So, percentage composition of Carbon is :

\(\%Carbon = \dfrac{3.21}{3.21+1.02}\times 100\\\\\%Carbon = \dfrac{3.21}{4.23}\times 100\\\\\%Carbon = 75.89 \%\)

Since, compound is made up of Carbon and Oxygen.

So, %Oxygen is ( 100 - 75.89 )% = 24.11%

Hence, this is the required solution.

10.0 trillion DNA molecules are equal to option a. 1.66 × 10–11 moles.

Deoxyribonucleic acid is a polymer composed of polynucleotide chains that coil around every different to shape a double helix sporting genetic instructions for the improvement, functioning, increase, and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.

DNA is fabricated from chemical constructing blocks known as nucleotides. those building blocks are the product of three components: a phosphate institution, a sugar institution, and one of four styles of nitrogen bases. To shape a strand of DNA, nucleotides are connected into chains, with the phosphate and sugar corporations alternating.

calculation:-

1 trillion = 10¹² DNA molecules

6.022 × 10²³ molecule = 1 mole

10¹² DNA molecules = 1 / 6.022 × 10²³ × 10¹²

                                 = 1.66 × 10–11 moles

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The particles in a hot coffee possess greater kinetic energy compare to the particles of an ice cream due to the nature of their states of matter.

The particles of liquid substance are held together by weak intermolecular force of attraction and therefore are far from each other which cause them to be able to move about freely in the hot cup of coffee. Due to easy movement they will have more kinetic energy and move at a faster rate due to application of heat. Due to this heat, the particles in the hot coffee will be free to move about and strikes the wall of the container which in turns increases their kinetic energy since kinetic energy is the energy possessed by a body by virtue of its motion.

An ice cream is a semisolid and in a semisolid compare to liquid substance, the molecules/particles of the substance are held together by intermolecular force of attraction and hence, this particles will not be able to move freely and as such will possess low kinetic energy compare to the particles in the hot coffee.

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Answer: permeable and porous

The moles of CO2 are in the tank is mathematically given as

n=1.431

Question Parameters:

A 10-liter tank of CO2 is at a pressure of 3.5 atm and a temperature of

25°C.

Generally, the equation for the ideal gas  is mathematically given as

PV=nRT

Therefore

n=PV/RT

n=354.638kpa*10/8.314 J/mol·K *298k

n=1.431

In conclusion,  moles of CO2 is in the tank is

n=1.431

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Exothermic reactions release heat when the reactants produce products. The process of respiration is an exothermic reaction as it releases heat. Thus, option D is correct.

An exothermic is a type of reaction that involves the release of heat during the reaction through product formation. The respiration reaction is exothermic as it involves the breakdown of oxygen and glucose into energy.

Thermal decomposition is an endothermic reaction as it requires energy for completion. Similarly, photosynthesis and reaction between ammonium nitrate and water are endothermic reactions as they also require energy from the external source.

Therefore, respiration is an exothermic reaction.

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Answer:

hey mate your answer is

D ALL OF THESE

HOPE IT HELPS YOU

To make sedimentary rock, broken bits of sedimentary, igneous, and metamorphic rocks get deposited in layers and bonded together.

So, option d. is correct.

Sedimentary rocks are created by the accumulation and deposition of mineral and organic particles just at earth's surface, followed by cementation. The processes that enable these particles that settle in place are referred to as sedimentation.

To make sedimentary rock, broken bits of sedimentary, igneous, and metamorphic rocks get deposited in layers and bonded together.

So, option d. is correct.

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The equilibrium constant, Kp, for the reaction cannot be determined without knowing the equilibrium pressures of gases B and C in addition to the initial and equilibrium pressure of gas A.



To calculate the value of Kp, which is the equilibrium constant in terms of partial pressures, we need to use the given equilibrium pressures and the stoichiometric coefficients of the balanced equation.The equilibrium constant expression for the reaction is Kp = (P(B) * P(C)^2) / (P(A)^2), where P(A), P(B), and P(C) are the partial pressures of gases A, B, and C, respectively.

Given that the initial pressure of A is PA = 240 mmHg and the equilibrium pressure of A is PA = 55 mmHg, we can substitute these values into the Kp expression.Kp = (P(B) * P(C)^2) / (P(A)^2) = (55 * P(B) * P(C)^2) / (240^2)

To solve for Kp, we need additional information about the equilibrium pressures of B and C. Without that information, we cannot determine the exact value of Kp.

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Answer:

k=2, L=8, M=7

Explanation:

because k shell have maximum electron number of 2 ,L shell and M shell have 8 and 18 respectively.

Answer:

Since the noble gases are unreactive or inert, they are safe to use. Helium is used to fill balloons and airships, because it is much lighter that air and it will not catch fire. Neon is used in advertising signs. It will give red glow, but the color can be changes by mixing it with other gases.

Explanation:

Answer:

Inert gases or noble gases

Explanation:

These gases have 8 outer shells meaning their full so they won't allow chemical reactions therefore providing an inert environment hence the name inert gas.