suppose atoms of an ideal gas are introduced into an evacuated bottle of volume 52 cm3, resulting in a system with a translational kinetic energy of 24 j. calculate the pressure of the gas in kpa.

Answer:

Explanation:

Both Sample A and B have the same mass (5g) and same temperature change (15°C). What is not said and may explain the difference in energy needed are their initial states and temperature.

For example Sample B may be liquid water at 90°C. Heating it up to 105°C will require additional energy to go from liquid to gas state. If Sample A is water vapor at 105°C at first, it has a lower specific heat and heating it up to 120°C does not involve a state change. So the eneregy needed is less.

Answer:

96.1 %

Explanation:

Which teacher do you have lol

Answer:

La cantidad de energía disponible de una fuente de energía determinada se denomina recurso energético. La escasez de recursos energéticos (petróleo, carbón y madera) en algunas de las fuentes de energía más utilizadas plantear necesidad de usar otras fuentes investigar el modo más rentable de emplearlas

Explanation:

Answer:

false

Explanation:

its the amount of high-quality energy available from a given quantity of an energy resource minus the high-quality energy needed to make the energy available.

Answer:

False

Explanation:

The important properties of RNA polymerase from E. coli are It reads the DNA template from its 3' end to its 5' end during RNA synthesis and It uses a single strand of dsDNA to direct RNA synthesis. It is composed of five different subunits. SO, Option D, A and B are correct.

It is a multisubunit enzyme that contains many functional regions that are critical for the synthesis of RNA from a DNA template.The RNA polymerase of E. coli is a complex enzyme that has a number of important properties. The RNA polymerase is composed of five different subunits that are arranged in a holoenzyme configuration.

This holoenzyme is responsible for the recognition of promoter sequences on the DNA template and the subsequent initiation of RNA synthesis. RNA polymerase from E. coli reads the DNA template from its 3' end to its 5' end during RNA synthesis. This is in contrast to DNA polymerase, which reads the DNA template from its 5' end to its 3' end during DNA replication.

RNA polymerase from E. coli uses a single strand of dsDNA to direct RNA synthesis. The enzyme recognizes the template strand and reads it in the 3' to 5' direction, synthesizing the RNA strand in the 5' to 3' direction. This process is called transcription.

Therefore, Option A,B, and D are correct.

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ANSWER

The mass of Na2SO4 is 874g

EXPLANATION

Given that;

The number of moles of HCl is 12.3 mol

Follow the steps below to find the mass of sodium sulfate produced

Step 1; Write a balanced equation for the reaction

In the reaction above, 2 moles of NaCl react with 1 mole of H2SO4 to give 2 moles of HCl and 1 mole of Na2SO4

Let the number of moles of Na2SO4 be x

The number of moles of Na2SO4 is 6.15 moles

Step 3; Find the mass of Na2SO4 using the below formula

Recall, that the molar mass of Na2SO4 is 142.04 g/mol

Therefore, the mass of Na2SO4 is 874g

Answer:

Beryllium

Explanation:

Beryllium has 4 protons (positive charge) and 5 neutrons (Negative charge)

According to the Coase theorem, the socially efficient level of emissions can be achieved through bargaining between a chemical company and a commercial fishery if the party that has the right to use the river is clearly defined.

The Coase theorem, developed by economist Ronald Coase, suggests that when property rights are clearly defined and transaction costs are low, private bargaining between parties can lead to an efficient allocation of resources. In the case of the chemical company and the commercial fishery operating on the same river, the socially efficient level of emissions can be reached through bargaining if one party has the right to use the river.

This means that if either the chemical company or the commercial fishery has exclusive ownership or rights over the river, they can negotiate and come to an agreement on the appropriate level of emissions that considers the interests and costs of both parties. By establishing property rights and allowing the party with the right to use the river to negotiate, the Coase theorem suggests that the involved parties can reach an outcome that maximizes overall social welfare and minimizes any negative externalities caused by emissions.

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It is possible to turn aldehydes and ketones into alkenes via the Wittig reaction.

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Hydrocarbons with non-polar characteristics are soluble in benzene. When it comes to hydrocarbons, benzene (C6H6) is nonpolar in nature.

Therefore, hydrocarbons having non-polar characteristics are soluble in benzene. The following hydrocarbons are likely to dissolve in benzene (C6H6):

Hexane (C6H14)

Heptane (C7H16)

Octane (C8H18)

Nonane (C9H20)

Decane (C10H22)

Undecane (C11H24)

Dodecane (C12H26)

Note:

The above-listed hydrocarbons are alkanes. Alkanes are hydrocarbons consisting of carbon and hydrogen atoms only and no functional groups. The presence of non-polar C-C and C-H bonds in alkanes makes them insoluble in polar solvents like water. They are soluble in non-polar solvents like benzene.

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Answer:

how Bluetooth infared is used to send information

Answer:

The molarity of the 100ml solution is 3.984 M.

Explanation:

The molarity of the 100ml solution can be calculated using the formula:

Molarity = (moles of solute) / (volume of solution in liters)

First, we need to calculate the moles of solute present in the original 500ml solution:

Moles of KI = (50g / 166.0028 g/mol) = 0.300 mol Moles of I2 = (25g / 253.808 g/mol) = 0.0984 mol

Total moles of solute = 0.300 + 0.0984 = 0.3984 mol

Next, we need to calculate the volume of the 100ml solution in liters:

Volume of 100ml solution = 100ml / 1000ml/L = 0.1 L

Finally, we can use the formula to calculate the molarity of the 100ml solution:

Molarity = 0.3984 mol / 0.1 L = 3.984 M

Therefore, the molarity of the 100ml solution is 3.984 M.

The statement "Polyunsaturated fatty acids are precursors of other molecules" is true because polyunsaturated fatty acids have a greater number of double bonds, which makes them more unstable and reactive than saturated fatty acids.

These double bonds can undergo a process called oxidation, which generates free radicals and reactive oxygen species that can interact with other molecules in the body to create new compounds.

Polyunsaturated fatty acids (PUFAs) can serve as precursors of eicosanoids, a family of signaling molecules that play key roles in inflammation, blood clotting, and other physiological processes.

Eicosanoids are derived from arachidonic acid, a polyunsaturated fatty acid found in cell membranes, and include prostaglandins, thromboxanes, and leukotrienes.

Other polyunsaturated fatty acids, such as omega-3 and omega-6 fatty acids, can also serve as precursors of specialized pro-resolving mediators (SPMs), which are lipid mediators that play a key role in the resolution of inflammation.

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Sure! The structure of caffeine is a heterocyclic organic compound with the chemical formula C8H10N4O2. It consists of two fused six-membered rings (a purine), with four nitrogen atoms and two oxygen atoms. The structure can be drawn as follows: H3C N N || || || H3C-C-N-C-C-N-C-C=O || || || N N CH3.

Caffeine is a drug that stimulates (increases the activity of) your brain and nervous system. The atom is a basic unit of matter, consisting of an atomic nucleus and a cloud of negatively charged electrons that surrounds it. The atomic nucleus consists of positively charged protons and neutral charged neutrons. The electrons in an atom are bound to the nucleus by electromagnetic forces. Heterocyclic compounds are organic compounds with ring structures that contain at least one carbon atom and one other element, such as N, O, or S.

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The Ea of the forward reaction is 297.5 kJ/mole. The E of the products is 33.6 kJ/mole LOWER than that of the reactants, hence the negative value. Thus, the Ea of the reverse reaction requires 33.6 kJ/mole to get back to the starting point and then an additional 297.5 kJ/mole to reach the threshold. Total = 331.1 kJ/mole.

Chemical reaction is the process by which one or more compounds, known as reactants, change into one or more new ones, known as products. Chemical components or compounds make up substances. The atoms that make up the reactants are rearranged in a chemical reaction to produce various products.

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Answer:D). C3H6N

Explanation:applesause

Lithium has 3 protons in the nucleus.

Atomic number =number of protons =number of electrons

According to the question,

we have been given atomic number= 3

So, number of protons will be 3 and number of electrons will also be 3.

We can additionally calculate number of neutrons as follows-

number of neutrons= mass number - number of protons

                                   = 6.941 - 3

                                   ≈ 4

Hence, the number of protons in lithium will be 3.

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The nucleus of Lithium has three protons.

The number of protons or electrons in the nucleus of a neutral atom is known as its Atomic number.

The total mass of an atom's protons and neutrons is known as its mass number. (neutrons and protons added together Equals nucleons)

Atomic mass= Mass number + Neutrons

Atomic number equals the sum of the protons and electrons

Since, atomic number given is 3

Therefore, protons in the nucleus will be 3.

Additionally, we may determine the neutron number using the formula below.

mass number = number of neutrons + number of protons

⇒ 6.941 = number of neutrons + 3

⇒ number of neutrons will be approximately 4.

Thus, lithium will contain three protons.

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Answer:

To convert from mols to grams, multiply the number by the total molar mass of the compound.

To find the approximate molar mass of a compound, add up the molar masses of each element in the compound, making sure to multiply by the subscripts.

#2 for example:

First, find the molar mass of NaCl.

Molar mass of Na= 22.990g (refer to a periodic table or look it up)

Molar mass of Cl= 35.45g

22.990g + 35.45g= 58.44g

Next, convert from mols to g.

2.19 mol x 58.44g= 127.98g NaCl

To convert from grams to mols, do the same thing as mols to grams except DIVIDE instead of multiply.

#3 for example:

NaC2H3O2

Na= 22.99g

C2= 12.011 x 2 => 24.022g (multiply molar mass of C by 2 since there are 2 carbons)

Do this for the rest of the elements in the compound and add them up. The total molar mass should be approximately 82.0343g.

Next, convert from g to mol.

14.68g/82.0343g≈ 0.179 mol

Answer:

Explanation:

The density of a substance can be found by using the formula

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

From the question

mass = 4.5 g

volume = 6.75 cm³

We have

\(density = \frac{4.5}{6.75} \\ = 0.6666666...\)

We have the final answer as

Hope this helps you

Answer:

sorry read the question and answer the question

When the temperature of a substance increases, the average kinetic energy of its particles also increases.

The average kinetic energy of particles refers to the average energy associated with the motion of particles in a substance. It is directly related to the temperature of the substance. When the temperature of a substance increases, the average kinetic energy of its particles also increases. This is because temperature is a measure of the average kinetic energy of the particles in a substance.

As the temperature increases, the particles gain more energy and move faster. This increase in energy causes the particles to collide with each other more frequently and with greater force. The increased motion and collisions result in an increase in the average kinetic energy of the particles.

Conversely, when the temperature decreases, the average kinetic energy of the particles decreases as well. The particles have less energy and move more slowly, leading to fewer and less energetic collisions. This decrease in motion and collisions results in a decrease in the average kinetic energy of the particles.

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The average kinetic energy of the particles increases when heat is added to a substance.

Heat is a form of energy that causes the particles in a substance to move faster and collide more frequently, resulting in an increase in the average kinetic energy of the particles.

The amount of energy required to raise the temperature of a substance is directly proportional to the substance's mass, specific heat, and temperature change.

The more massive the substance is and the higher its specific heat, the more energy is required to raise its temperature.

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Explanation:

the first question's answer is a

the second question's answer is c

Answer:

It is the temperature at which water is frozen or is pure ice

"Absolutely zero" temperature is the coldest temperature possible. It's so cold that everything stops moving and has no energy left. Scientists use a special scale called Kelvin to measure temperature, and absolute zero is at 0 Kelvin or -273.15 degrees Celsius (-459.67 degrees Fahrenheit). We can't actually reach absolute zero in real life, but scientists have come very close in laboratories using special cooling methods.

There is a way to decrease the concentration of an ion here. The carbonate ion happens to be easy to decrease. All we have to do is add some acid (say HCl) to the container. The following sequence of reactions explains how this WO r ks.

As long as more acid is added, this process will continue until all the solid Zn CO3 has been dissolved

The sense of smell, also known as olfaction, is referred to as a "chemical" sense because chemical stimuli, in the form of odor molecules, are detected by specialized cells in the nose called olfactory receptors.

Here correct answer is A)

When these odor molecules come into contact with the olfactory receptors, they bind to specific receptor proteins, triggering a series of chemical reactions.

These chemical reactions result in the transformation of the chemical stimulus (odor molecule) into electrical signals. The electrical signals are then transmitted to the olfactory bulb in the brain, where further processing and interpretation of the smells occur.

In summary, the sense of smell relies on the detection and transformation of chemical stimuli into electrical signals, distinguishing it as a "chemical" sense.

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Answer:

genes are small sections of DNA. These genes contain instructions that tell your cells to make molecules called proteins. And the protein do things to your body to keep you healthy. Genes determine traits as well.

e) If the G-C base pair at position 35 in the DNA sequence were changed to a C-G, it would result in a mutation.

f) If the A-T base pair at position 34 were deleted, it would cause a frameshift mutation

e. If the G-C base pair at position 35 in the DNA sequence were changed to a C-G, it would result in a mutation. This mutation is called a point mutation, specifically a substitution mutation. The change from G-C to C-G would lead to a different codon being formed during transcription and translation. The specific amino acid encoded by that codon would be altered. This change in amino acid sequence can potentially affect the structure and function of the resulting protein. The exact impact on the protein's structure and function would depend on the specific amino acid substitution and its location within the protein.

f. If the A-T base pair at position 34 were deleted, it would cause a frameshift mutation. This mutation would shift the reading frame of the DNA sequence during transcription and translation. As a result, all subsequent codons would be read differently, leading to a completely different amino acid sequence downstream of the mutation site. This frameshift mutation can have significant consequences as it can alter the entire protein sequence and disrupt its function. The severity of the impact would depend on the specific protein and the role of the affected region in its structure or function.

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The number of grams of methanol in the sample can be calculated using the Avogadro's number and the molar mass of methanol.

First, we need to determine the number of moles of methanol in the sample:
n = N/NA
n = 4.34 × 10^24/6.022 × 10^23
n = 7.21 moles
where N is the number of molecules and NA is the Avogadro's number (6.022 × 10^23).
Next, we can use the molar mass of methanol to convert moles to grams.
m = n × M
m = 7.21 × 32.04
m = 231.1 grams
where M is the molar mass of methanol (32.04 g/mol).


Explanation: To calculate the mass of methanol, we first need to determine the number of moles in the sample.
Use Avogadro's number (6.022 × 10^23 molecules/mole) to find the number of moles of methanol:
Number of moles = (4.34 × 10^24 molecules) / (6.022 × 10^23 molecules/mole) ≈ 7.2 moles
Calculate the molar mass of methanol (CH3OH):
Carbon (C) = 12.01 g/mol
Hydrogen (H) = 1.01 g/mol (3 H atoms = 3.03 g/mol)
Oxygen (O) = 16.00 g/mol
Molar mass of CH3OH = 12.01 + 3.03 + 16.00 = 31.04 g/mol
Multiply the number of moles by the molar mass to find the mass in grams:
Mass = 7.2 moles × 31.04 g/mol ≈ 72.7 grams.

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