Help please! Tell me which one goes where.

Answer:

thermal

Explanation:

Thermal energy is due to the motion of an object's particles, due to the random movement of molecules in a system, thermal energy also known as random or internal kinetic energy is produced, hence option A is correct.

Atoms or molecules in motion are the source of thermal energy. An object's thermal energy rises as its temperature rises because the movement of its molecules or atoms accelerates. It is possible to transmit an object's thermal energy to another.

Thermal energy, also known as random or internal kinetic energy, is created when molecules in a system move randomly, as a result of the motion of an object's particles.

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Answer: Pollution.

Explanation: Humans are polluting Earth's oceans with our toxic waste and plastic garbage. This trash kills the coral reefs that exist in said oceans.

Answer:

Really pollution because that includes a lot of things

Explanation:

Have a good day

The functional groups that are introduced as substituents on an aromatic ring by Friedel-Crafts alkylation and acylation reactions are an alkyl chain and an acyl group. Thus, the correct options are C and D.

Friedel-Crafts alkylation is a method of synthesizing an alkylbenzene from an arene and an alkyl halide using a Lewis acid catalyst, such as aluminum trichloride or ferric chloride. Similarly, Friedel-Crafts acylation is a chemical reaction that involves introducing an acyl group to an aromatic ring in the presence of a Lewis acid catalyst such as aluminum chloride, ferric chloride, or zinc chloride.

The following are the functional groups that are introduced as substituents on an aromatic ring by Friedel-Crafts alkylation and acylation reactions: An alkyl chain and an acyl group.

Therefore, the correct options are C and D i.e. an alkyl chain and a ketone.

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Answer:

The answer will be "B"

Explanation:

It is B, because as we can see in the problem, it shows that there are three hydrogen gas, which is H₂. So, it shows that the ratio of Hydrogen gas to Ammonia is 3:2. In the answer, it says for every 3 mol of H₂ 2 moles of ammonia is produce. Therefore, B is correct.

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Answer:

the energy used to heat Cu is 27.6 Cal

Explanation:

given data

mass m = 5 g

Specific heat capacity of Cu =  0.092 cal/g

temperature T2 = 80 Celsius

temperature T1 = 20 Celsius

solution

we get here energy used to heat Cu that is express as

Q = m × c × ΔT         ....................1

so here m = mass and c = specific heat capacity

and ΔT = T2 - T1

so put value in eq 1

Q = 5 × 0.092 × (80 - 20)

Q = 27.6 Cal

so that the energy used to heat Cu is 27.6 Cal

The molar mass of the diprotic acid is 212 grams/mol.

Perimeter

Calculate the mole of a diprotic acid

Calculate the molar mass

\(n_2 = \frac{m_2}{M_2}\)

\(M_2 = \frac{m_2}{n_2}\)

\(M_2 = \frac{0.2046}{0.0009646}\)

M₂ = 212 g/mol

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Answer:

The California Condor is on the verge of extinction. There were three individuals, all males, known to be living free in late 1986. That was a drop from fifteen wild birds (including five breeding pairs) known to have been present in 1984. Twenty-one condors were also alive in captivity toward the end of 1986.

Explanation:

A molecule is made up of two or more atoms held together by chemical bonds in a stable association. The atoms may or may not belong to the same element

Molecules refer to groups of two or more atoms that are held together by chemical bonds in a stable association. This bond is formed when the electrons that orbit the atoms' nucleus intermingle. As a result, the atoms' outermost shells fill up with electrons, providing stability to the molecule. The atoms in a molecule may belong to the same element or to different elements.

When they belong to different elements, the molecule formed is called a compound molecule. For example, carbon dioxide (CO₂) is a compound molecule that consists of one carbon atom and two oxygen atoms. The bond between these atoms is formed because the carbon atom requires two more electrons to fill its outer shell while the oxygen atoms require two electrons each to fill their outer shells, resulting in a stable molecule.

Therefore, a molecule is made up of two or more atoms held together by chemical bonds in a stable association. The atoms may or may not belong to the same element.

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The initial and final states of the hydrogen atom would be 4 and 2.27 respectively.

The energy of a photon can be calculated using the formula: E = hc/λ, where h is Planck's constant, c is the speed of light, and λ is the wavelength of the photon.

The energy released when a hydrogen atom transitions from an excited state to a lower energy state can be calculated using the formula: ΔE = Efinal - Einitial, where Efinal is the energy of the final state and Einitial is the energy of the initial state.

We know that the hydrogen atom emits a photon of wavelength 410 nm, so we can calculate its energy:

E = hc/λ = (6.626 x 10^-34 J s) x (3.00 x 10^8 m/s) / (410 x 10^-9 m) = 4.84 x 10^-19 J

This energy corresponds to the energy difference between the initial and final states of the hydrogen atom.

We can use the Rydberg equation to calculate the energy levels of hydrogen:

1/λ = R (1/ninitial^2 - 1/nfinal^2)

Rearranging the equation gives:

1/nfinal^2 = R/λ + 1/ninitial^2

Substituting the values we know:

1/nfinal^2 = (1.097 x 10^7 m^-1) / (410 x 10^-9 m) + 1/ninitial^2

Solving for nfinal:

nfinal = sqrt(1 / ((1.097 x 10^7 m^-1) / (410 x 10^-9 m) + 1/ninitial^2))

To find the initial state, we need to try different values of ninitial and see which one gives us the correct energy difference. We know that the energy difference is:

ΔE = Efinal - Einitial = 4.84 x 10^-19 J

Using ninitial = 3, we get:

nfinal = sqrt(1 / ((1.097 x 10^7 m^-1) / (410 x 10^-9 m) + 1/3^2)) ≈ 2.75

ΔE = (-(2.18 x 10^-18 J) / nfinal^2) - (-(2.18 x 10^-18 J) / 3^2) ≈ 4.76 x 10^-19 J

This is close to the energy difference we calculated earlier, but not exact. We need to try a different value of ninitial.

Using ninitial = 4, we get:

nfinal = sqrt(1 / ((1.097 x 10^7 m^-1) / (410 x 10^-9 m) + 1/4^2)) ≈ 2.27

ΔE = (-(2.18 x 10^-18 J) / nfinal^2) - (-(2.18 x 10^-18 J) / 4^2) ≈ 4.84 x 10^-19 J

This is the correct energy difference, so the initial state of the hydrogen atom is ninitial = 4 and the final state is nfinal ≈ 2.27.

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Answer:

2 C4H10     +  13  O2    ====>   8  CO2      + 10 H2O

Explanation:

Answer:

b

Explanation:

Answer:

B. Color of the solute

Explanation: Study island ;)

Answer:

yes it chemical to electrical to radiant energy

Explanation:

correct

The mass of the piece of cork is determined by its density, which can vary depending on the specific type of cork.

To calculate the mass of the piece of cork, we need to know its density. Density is defined as the mass per unit volume of a substance. However, the question only provides the volume of the cork, which is 35.5 milliliters (ml). Without the density, we cannot directly determine the mass.

To find the mass, we need to multiply the volume by the density of the cork. Density is typically expressed in grams per milliliter (g/ml) or grams per cubic centimeter (g/cm³). Once we have the density, we can use the formula:

Mass (g) = Volume (ml) x Density (g/ml)

Without information about the density of the cork, we cannot accurately calculate its mass. Therefore, we need additional data or specifications to proceed with the calculation.

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Answer:

Chemical digestion involves the secretions of enzymes throughout your digestive tract. These enzymes break the chemical bonds that hold food particles together. This allows food to be broken down into small, digestible parts. Digestion involves taking large portions of food and breaking them down into micronutrients small enough to be absorbed by cells. Chewing and peristalsis help with this, but they don’t make particles small enough. That’s where chemical digestion comes in.

Chemical digestion breaks down different nutrients, such as proteins, carbohydrates, and fats, into even smaller parts:

Fats break down into fatty acids and monoglycerides.

Nucleic acids break down into nucleotides.

Polysaccharides, or carbohydrate sugars, break down into monosaccharides.

Proteins break down into amino acids.

Explanation:

I hope this helps!

Answer:

D. Provides higher resolution images

Explanation:

The advantages gained by the use of digital data transmission instead of analog transmission are;

1) Noise do not damage digital signal transmission but they impact on analog signals. Digital signals are therefore more secure than analog signals

2) The bandwidth required for digital signal transmission is much less than the bandwidth required for analog

3) Digital signal allow data transmission to very long distance

4) The rate of transmission with digital signals is higher with digital signals

5) Digital signals allow easy and cost effective methods by which they are  replicated

The resolution of an image is a measure of the amount of pixels displayed per inch of the image, such that a high resolution image has more pixel per inch of the image. It is therefore a factor determined at the source of the image based on how much detail is required in an image before transmission

Answer:

44

Explanation:

You multiply the length value by 1000

Answer:

0.044 km × 1000 = 44 meters

Answer:

12.3

Explanation:

Trust

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, 12.3L is the volume of a balloon that contains a 1.00 mol sample of oxygen with a pressure of 2.00 atm at 300.0 K.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of oxygen gas= 2.00 atm

V= volume of oxygen gas =?

n =number of moles of oxygen gas=1.00 mol

T =temperature of oxygen gas =300.0 K

R = Gas constant = 0.0821 L.atm/K.mol

Substituting all the given values, we get

2.00×V=1× 0.0821×300.0

On calculation we get

Volume=12.3L

Therefore, the volume of oxygen is 12.3L.

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The functional groups can be identified via IR Spectroscopy, which monitors atom vibrations.

It is feasible to identify the functional groups using IR Spectroscopy, which monitors the atoms' vibrations. 5 Typically, lighter atoms and stronger connections will vibrate with a higher stretching frequency (wavenumber).

IR spectra of solids and liquids are often produced using straightforward liquid cells after the sample has been dissolved in a solvent that is moderately IR transparent, like CCl4. Another method for studying a solid directly involves grinding it into a fine paste using NUJOLTM, a blend of highly pure hydrocarbons.

The process involves passing infrared light through the organic compound we wish to identify; some of the frequencies are absorbed by the compound, and if we keep track of the light that passes through, the precise frequencies of the absorptions may be determined.

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The dependent  variable is the time taken, the independent variable is the type of paper helicopter and the control is the height from which the paper helicopters are dropped.

The term experiment helps us to decode the relationship between two variables. We have to know that in an experiment we are able to establish cause and effect relationships.

The dependent variable is the variable that is changed owing to the fact that another variable (the independent variable) is manipulated in the experiment.

Now, the dependent  variable is the time taken, the independent variable is the type of paper helicopter and the control is the height from which the paper helicopters are dropped.

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NH4Cl will form an acidic solution in water. The correct answer is (c). When NH4Cl dissolves in water, it dissociates into NH4+ and Cl- ions. The NH4+ ion can act as a weak acid and donate a proton (H+) to water, resulting in the formation of hydronium ions (H3O+).

Formation of hydronium ions (H3O+) increases the concentration of H3O+ ions in the solution, leading to an acidic pH.

On the other hand, options (a) NaI, (b) KBr, and (d) LiNO3 will dissociate into cations and anions that do not exhibit acidic properties when dissolved in water. These compounds generally produce neutral solutions.

Option (e) "none of the above solutions will be acidic" is incorrect since NH4Cl will indeed form an acidic solution. It is important to recognize the acidic nature of NH4Cl due to the presence of the ammonium ion (NH4+) in the compound.

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Solution :

We know, In an electrolyte solution, the number of dissolved particles is larger because the solute breaks apart into ions. The greater the number of ions, the larger the impact on colligative properties will be.

So, the compound which will dissociate into more number of electrolyte has more vapour pressure.

Out of all given compound K₃PO₄ have highest number of particles after dissociation.

Hence, D) is the required solution.

The equation is said to balance if the number of the elements is equal on both sides. No, the reaction is not balanced as the number of elemental atoms on both sides of the equation is not equal. Thus, option A is correct.

A balanced equation has an equal number of atoms of the chemical elements in a reaction that are seen as their coefficients. The reaction between Barrelene and oxygen is not balanced.

The reaction is given as,

2C₈H₈ + 25O₂ ⇒ 8CO₂ + 18H₂O

Here, the number of carbon and oxygen is more on the reactant side, and the number of hydrogen is more on the product side.

The balanced reaction is given as,

C₈H₈ + 10O₂ ⇒ 8CO₂ + 4H₂O

Therefore, in option A. the reaction is not balanced.

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Your question is incomplete, but most probably your full question was, Is this equation completely balanced? 2C₈H₈ + 25O₂ ⇒ 8CO₂ + 18H₂O

A. No, because the number of carbon, hydrogen & oxygen atoms on both sides of the equation are not equal.

B. No, because the number of oxygen atoms on both sides of the equation is not equal.

C. Yes, because all of the coefficients are in their lowest whole number ratio.

D. No, because the number of hydrogen atoms on both sides of the equation is not equal.

E. Yes, because the number of products is equal to the number of reactants.

Answer:

Explanation:

Any densities less than 1g/cm3 will float, while objects with densities over 1g/cm3 will sink.

Answer:

A. The birthrate is higher than the death rate

Explanation:

The maximum possible time between the injection and the scan completion for the condition to be met is approximately 348 seconds.

To calculate the maximum possible time between the injection and the scan completion, we need to find the time it takes for 42% of the initially injected oxygen-15 to decay.

Given that the half-life of oxygen-15 is 2.0 minutes, we can use the formula for exponential decay:

\(N(t) = N_0 * (1/2)^{(t / t_{half}),\)

where N(t) is the remaining amount of oxygen-15 at time t, N₀is the initial amount, \(t_{half\) is the half-life, and t is the time.

We want to find the time t when N(t) is equal to 42% of N₀:

N(t) = 0.42 * N₀.

Substituting the values, we have:

0.42 * N₀ = N₀ * \((1/2)^{(t / t_{half})\).

Simplifying the equation, we get:

0.42 = \((1/2)^{(t / 2.0)\).

To solve for t, we take the logarithm of both sides:

log(0.42) = (t / 2.0) * log(1/2).

Dividing both sides by log(1/2), we have:

(t / 2.0) = log(0.42) / log(1/2).

Finally, solving for t, we get:

t = 2.0 * (log(0.42) / log(1/2)).

Calculating this expression, we find:

t ≈ 5.8 minutes.

Since we need the answer in seconds, we multiply by 60:

t ≈ 5.8 * 60 = 348 seconds.

Therefore, the maximum possible time between the injection and the scan completion for the condition to be met is approximately 348 seconds.

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Using stoichiometry and the molar mass, we find that one would need approximately 2218.32 milligrams of MgSO₄·7H₂O (Epsom salt) to make 30 mL of 0.3 M MgSO₄ solution.

The molar mass of MgSO₄·7H₂O is calculated as follows:

Therefore, the molar mass of MgSO₄·7H₂O is :

30 mL of 0.3 M MgSO₄ solution is prepared by finding the amount of MgSO₄·7H₂O required in milligrams:

Converting grams to milligrams, multiplying by 1000:

Therefore, to make 30 mL of 0.3 M MgSO₄ solution, you would need approximately 2218.32 milligrams of MgSO₄·7H₂O.

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Complete question :

On the first day of your new job as a chemist, you are given a bottle of magnesium sulfate and asked to make 30 mL of 0.3 M MgSO4. The formula on the bottle is MgSO4∗7H2O (also known as Epsom salt). Calculate the amount of salt you need (in milligrams).

Answer:

2 C Atoms

Explanation:

When you have coefficient of 2 next to a compound element, it indicates there are 2 of each compound element. In the compound element, there is one C Atom, and 2×1 is 2.

Answer:

0.694 cents per second

Explanation:

25x100=2500 cents per hour, 2500/60 = 41.67 per minute and 41.67/60=0.694 cents per second

Statement B is true because the motion of one molecule or atom is its kinetic energy. Statement C is also true because the motion of all molecules or atoms in a system contributes to the total kinetic energy of the system.

The total internal energy of a system resulting from the random movement of its particles, including both kinetic and potential energy, is known as thermal energy. The energy that an object has as a result of its motion is known as kinetic energy, on the other hand.

Therefore, statement B is true because the motion of one molecule or atom is its kinetic energy. Statement C is also true because the motion of all molecules or atoms in a system contributes to the total kinetic energy of the system.

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