what does not occur during the processing of eukaryotic mrna?
a.splicing the exons together
b.translation
c.addition of a cap at the 5' end
d.removal of introns
e.addition of a poly A tail at the 3' end

Answer:

If it's multiple choice it's 2 and 3, if not I think the best answer is 2, but I'm not exactly sure.

By using the general gas equation, the mass of Xenon in the mixture is found to be 27.44g.

The ideal gas law, also known as the general gas equation, says that the product of the pressure and volume of one gram of an ideal gas is equal to the result of the universal gas constant and the absolute temperature of the gas.

PV = nRT denotes the general gas equation. In this equation, the letters P, V, n, R, T stand for the pressure of the ideal gas, the volume of the ideal gas, the total amount of the ideal gas given in moles, the universal gas constant and the temperature, respectively.

The general gas equation states that one mole of an ideal gas may occupy a volume of 22.414 liters under standard circumstances, which are a pressure of 101,325 Pa / 1atm and a temperature of 273.15 K or 0°C.

Given:

Pressure, P = 2.44atm

Temperature, T = 86+273 = 359K

Volume, V = 7.66L

To find:

Mass of Xe = ?

Formula:

PV = nRT

Calculations:

Let total no. of moles of Ar and Xe = y

n = PV/RT

n = 2.44 x 7.66 / (0.0821 x 359) = 0.634mol

No. of moles of Argon (yAr) = 17/40 = 0.425mol

y = yAr + yXe

0.634 = 0.425 + yXe

yXe = 0.634 - 0.425

yXe = 0.209mol

Mass of Xe = no. of moles x gram atomic mass

Mass of Xe = 0.209 x 131.293 = 27.44g

Result:

27.44g Xenon is present in the given Argon and Xenon mixture.

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According stoichiometry and balanced chemical equation,as 339.74 g produces 2 moles , therefore 3 g is produced by 0.017 moles of silver.

Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.

In the given example, according to balanced chemical equation as 339.74 g of silver nitrate produces 2 moles,

∴3 g of silver nitrate will produce 3×2/339.74=0.017 moles.

Therefore, 3.00 g of AgNO₃ is used to make 0.017 moles of silver.

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First, we will calculate the number of moles of mixture of Xenon and Neon gases.Number of moles of mixture of Xenon and Neon gases:

Let x be the mole fraction of Neon.

Therefore, (1 - x) is the mole fraction of Xenon

.Mole fraction of Neon + Mole fraction of Xenon = 1x + (1 - x) = 1x = 1 - (1 -

x = 0 + x

x = 0.279

Mole fraction of Neon = 0.279

Mole fraction of Xenon = 0.721

Number of moles of gas = (Total Pressure * Volume)/(Gas Constant * Temperature)

Number of moles of Xenon = (7.10 atm * 16.75L * 0.721)/(0.08206 * (273 + 30))

Number of moles of Xenon = 8.44 moles

Number of moles of Neon = (7.10 atm * 16.75L * 0.279)/(0.08206 * (273 + 30))

Number of moles of Neon = 3.29 moles

Now, we can calculate the partial pressure of Xenon and Neon.

Partial pressure of Xenon:

Partial Pressure of Xenon = Mole fraction of Xenon * Total Pressure

Partial Pressure of Xenon = 0.721 * 7.10 atm

Partial Pressure of Xenon = 5.12 atm

Partial pressure of Neon

Partial Pressure of Neon = Mole fraction of Neon * Total Pressure

Partial Pressure of Neon = 0.279 * 7.10 atm

Partial Pressure of Neon = 1.98 atm

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Answer:

Thus, the required heat is 79kJ 79 k J .

Explanation:

i think its the right bottem one

Answer:

15 km/hour

Explanation:

You need to find how fast he was going per hour.

Answer: 15

Divide. 60 ÷ 4

This gives us 15. So, Alex was going 15 mph

Answer:

Explanation:

C - Mix ice with water until equilibrium is reached but some ice remains that is no longer melting.

Answer:

Lattice energy is an estimate of the bond strength.

HCO3^- is best described as ao bicarbonate in.

The bicarbonate ion, HCO3^-, consists of one hydrogen atom (H+), one carbon atom (C), and three oxygen atoms (O) bonded together. It is a polyatomic ion that plays a crucial role in various biological and chemical processes. Bicarbonate ions are commonly found in the body and are involved in maintaining acid-base balance, particularly in blood and cellular environments.

In terms of acidity, HCO3^- can act as a weak acid. It has the ability to donate a proton (H+) in certain chemical reactions, contributing to the regulation of pH levels in the body. However, it is important to note that HCO3^- is primarily known as a bicarbonate ion and is more commonly involved in its role as a base rather than an acid.

In summary, HCO3^- is best described as a bicarbonate ion, which is involved in maintaining acid-base balance and acts as a weak acid in specific reactions describes HCO3^-. a proton donor a bicarbonate ion a weak acid common in the liver

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HCO3^- is known as the bicarbonate ion. It acts as a weak acid or a proton donor, assisting with pH regulation in the blood by buffering acid wastes from metabolic processes. It is also involved in respiratory regulation of acid-base balance.

HCO3^- is known as bicarbonate ion. It can act as a proton donor, thus making it a weak acid. In the body, bicarbonate ions and carbonic acid exist in a 20:1 ratio, helping to maintain blood pH balance. Bicarbonate ions prevent significant changes in blood pH by capturing free ions. During metabolic processes that release acid wastes such as lactic acid, bicarbonate ions help to buffer the acidity. These ions are even involved in respiratory regulation of acid-base balance, as they are crucial to the balance of acids and bases in the body by regulating the blood levels of carbonic acid. The stronger the acidic substance, the more readily it donates protons (H*). In contrast, bicarbonate is a weak base, meaning that it releases only some hydroxyl ions or absorbs only a few protons. Overall, the bicarbonate ion plays a critical role in various biological reactions and maintaining homeostasis.

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The best model of weathering is using a fan on a pile of sand causing the sand to move into a pile in a new location.

Weathering refers to the gradual breakdown of a rock due to the agents of denudation. The agents of denudation could be physical, chemical or biological.

The breakdown of rocks leads to the formation of soil. The closest model to the weathering of rock is using a fan on a pile of sand causing the sand to move into a pile in a new location.

The pile represents the rock which is being broken down as the fan blows the pile and it settles on a new location.

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Answer: The concentration of hydrogen ions is \(10^{-11}M\) and the concentration of hydroxide ions is \(10^{-3}M\). Thus the concentration of hydroxide ions is more than the concentration of hydrogen ions.

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.  

\(pH=-\log [H^+]\)

\(pOH=-\log[OH^-]\)

Putting in the values:

\(11=-\log[H^+]\)

\([H^+]=10^{-11}M\)

\(pH+pOH=14\)

\(pOH=14-11=3\)

\(3=-log[OH^-]\)

\([OH^-]=10^{-3}M\)

Thus the concentration of hydroxide ions is more than the concentration of hydrogen ions.

Electrons are said to be delocalized electrons

Delocalized electrons are electrons in a molecule, ion, or solid metal that are not associated with a single atom or covalent connection. Electrons that have been delocalized are trapped within an orbital that spans many neighboring atoms.

Because electrons can freely roam within these molecular orbitals, each electron becomes separated from its parent atom. Delocalization refers to electrons. The strong forces of attraction between the positive nuclei and the delocalized electrons hold the metal together.

As a result, in a metallic link, electrons are free to flow freely from one atom to the next across the metal and are not bound to a specific atom; these electrons are referred to as delocalized electrons.

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Answer: The light bends closer towards the normal and is refracted.

Explanation:  The light is passing through something less dense (air) to more dense (water), it's going to bend the light more towards the normal and will refract the light making it look bent at the surface of the water.

Answer:

Calculate from Oxidation Number

The oxidation number of oxygen is -2, and the oxidation number of hydrogen is +1. Add together the oxidation numbers of all the atoms in the polyatomic ion. In the example, -2 +1 = -1. This is the charge on the polyatomic ion.

Answer:

See explanation

Explanation:

A Lewis or dot structure shows the electrons on the valence shells of the bonding atoms as dots.

The method was developed by Sir G.N Lewis.

Oxygen is a diatomic molecule as shown in the image attached to this answer. There are two unshared electrons on each oxygen atom as well as four shared electrons

The sharing of electrons between the two oxygen atoms results in the completion of the octet and thereby stabilizing the atoms.

Oxygen has been a group 6A element consisting of 6 valence electrons. In order to attain the stable configuration, the atom of oxygen has been required to gain two electrons.

The oxygen shares its electrons with another oxygen atom and forms a covalent bond. The resulted bond has been able to stabilize the structure.

The image attached shows the lewis dot structure of the oxygen atom. The sharing of electrons between the two oxygen atoms results in the completion of the octet and thereby stabilizing the atoms.

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Answer:

pretty sure -10 degrees

Explanation:

no explanation

Answer:

Using dimensional analysis:

3.01x1022 molecules CO2 x 1 mol CO2/6.02x1023 molecules x 44. g CO2/mole = 2.20 g CO2

Explanation:

Explanation:

We are given different isotopes and we have to identify the number of protons and neutrons that are in the nuclueus of each atom.

a) Carbon-14:

By definition two isotopes are atoms that have the same atomic number but different mass number. The atomic number of an atom is equal to the number of protons of that atom, and the mass number is equal to the number of protons plus the number of neutrons.

atomic number = n° of protons

mass number = n° of protons + n° of neutrons

n° of protons = atomic number

n° of neutrons = mass number - n° of protons

n° of neutrons = mass number - atomic number

If two isotopes have the same atomic number but different mass number we can say that two isotopes have the same number of protons but different number of neutrons.

In we pay attention to carbon-14 we can look for its atomic number in the period table: 6. And its mass number is the one that we are given after the name of the element: 14.

n° of protons = atomic number = 6

n° of protons = 6

n° of neutrons = mass number - atomic number = 14 - 6

n° of neutrons = 8

b) Cobalt-60:

atomic number = 27 (from the periodic table)

mass number = 60

n° of protons = atomic number = 27

n° of protons = 27

n° of neutrons = mass number - atomic number = 60 - 27

n° of neutrons = 33

c) Gold-197:

atomic number = 79 (from the periodic table)

mass number = 197

n° of protons = atomic number = 79

n° of protons = 79

n° of neutrons = mass number - atomic number = 197 - 79

n° of neutrons = 118

d) Uranium-235:

atomic number = 92 (from the periodic table)

mass number = 235

n° of protons = atomic number = 92

n° of protons = 92

n° of neutrons = mass number - atomic number = 235 - 92

n° of neutrons = 143

Answer:

a) Carbon-14: n° of protons = 6 n° of neutrons = 8

b) Cobalt-60: n° of protons = 27 n° of neutrons = 33

c) Gold-197: n° of protons = 79 n° of neutrons = 118

d) Uranium-235: n° of protons = 92 n° of neutrons = 143

At equilibrium, a reversible reaction has reached a state where the rate of the forward reaction is equal to the rate of the reverse reaction. This means that the reaction has reached a point where the amounts of reactants and products have stopped changing.

Therefore, the second condition, "The amounts of reactants and products has stopped changing" is necessarily true for any reversible reaction at equilibrium.

The first condition, "The amount of products equals the amount of reactants", may or may not be true depending on the stoichiometry of the reaction and the initial amounts of reactants and products. If the reaction has a 1:1 stoichiometry, then the amount of products would be equal to the amount of reactants at equilibrium. However, if the reaction has a different stoichiometry, then the amounts of reactants and products at equilibrium would be different.

The third condition, "Reactants and products are both present in the reaction mixture", is not necessarily true as some reactions may have only one reactant or one product. For example, the reaction 2H2O(l) ↔ 2H2(g) + O2(g) has only one reactant (water) and two products (hydrogen and oxygen gases).

The fifth condition, "The conversion between reactants and products has stopped", is not a necessary condition for equilibrium. At equilibrium, the conversion between reactants and products may still be occurring, but at equal rates. This means that the concentrations of reactants and products remain constant over time.

In summary, the necessary conditions for a reversible reaction at equilibrium are that the amounts of reactants and products have stopped changing and that the rate of the forward reaction equals the rate of the reverse reaction.

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The false statement would be statement B) "They provide a significant amount of calories." Non-digestible carbohydrates do not provide significant calories since they are not broken down and absorbed by the body. Therefore, statement B) is false.

To identify the false statement about non-digestible carbohydrates, we need to consider their characteristics and properties. Here are some common characteristics of non-digestible carbohydrates, also known as dietary fiber:

1. They are resistant to enzymatic digestion: Non-digestible carbohydrates cannot be broken down by the enzymes present in the human digestive system.

2. They provide little to no caloric value: Since they are not digested, non-digestible carbohydrates generally do not contribute significant calories to the diet.

3. They promote bowel regularity: Non-digestible carbohydrates add bulk to the stool, aiding in the movement of food through the digestive system and preventing constipation.

4. They can be fermented by gut bacteria: Certain types of non-digestible carbohydrates, such as soluble fibers, are fermented by beneficial gut bacteria in the large intestine, leading to the production of short-chain fatty acids.

The complete question should be:

which statement about non-digestible carbohydrates is false?

A) They are resistant to enzymatic digestion.

B) They provide a significant amount of calories.

C) They promote bowel regularity.

D) They cannot be fermented by gut bacteria.

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Answer:

Matter says that the amount of matter stays the same, even when matter changes form. Sometimes it may seem that matter disappears during a science experiment, but this law tells us that matter cannot magically appear or disappear, it simply changes from one form to another.

Explanation:

brainliest?

Answer: Hope this helps:)

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. The law of conservation of matter states that in any given system that is closed to the transfer of matter, the amount of matter in the system stays constant. The law of conservation of matter says that in chemical reactions, the total mass of the products must equal the total mass of the reactants. French chemist A. Lavoisier laid the foundation to the scientific investigation of matter by describing that substances react by following certain laws. These laws are called the laws of chemical combination. Matter says that the amount of matter stays the same, even when matter changes form. Sometimes it may seem that matter disappears during a science experiment, but this law tells us that matter cannot magically appear or disappear, it simply changes from one form to another. Matter can change form through physical and chemical changes, but through any of these changes, the matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.

Answer:

the atomic number is 4

Explanation:

the atomic number is 4, thus beryllium contains 4 electrons and 4 protons.

Answer:

866000

Explanation:

because one kilometer (km) = 1000000 millimeters (mm)

Answer:

Explanation:

Element    #of protons     Mass #.      # of electrons      Atomic #.   Neutron

 Se.               34.                   78.96.                  34                     34           45
             

Si.                 14.                      28.                       14.                   14           14

H.                   1.                       1.                       1                         1               0

Ca.                  20.                 40.078.                20.                  20.              21

Fe.                  26.                  56.                         26.                 26.             30

Na.                  11.                    23.                       11.                    11.                12

Answer:

In the presence of UV light, ethane will react with bromine in a substitution reaction. UV light is the condition under which the reaction will occur so it is written above the arrow in the chemical equation. As the reaction proceeds, the intensity of the re-brown colour of the bromine water decreases.

Answer:

here ya go

Explanation:

combining bromine and ethane leads to a brown gas or liquid which is made of the elements. it is a gas at room temperature and does not affect human beings. there are many uses for bromine compounds but they are mainly used for the manufacturing of chlorine, fire retadants, water purification, graphy chemicals and pharmaceutcals. it is a naturally occurring element that can be found in animals such as sharks since they produce their own.

The equilibrium equation for the reaction:

NH₄NO₃(s) ⇌  N₂O(g) + 2H₂O(g) is Kp =  [ N₂O][H₂O]².

In the equilibrium expressions we only considered the gases and the aqueous compounds.  When the one or the more of the substances in the system that will exists in the gaseous phase, and the partial pressure of the species which can be used for the equilibrium expression.

The chemical reaction is as :

NH₄NO₃(s) ⇌  N₂O(g) + 2H₂O(g)

The equilibrium expression is as :

Kp =  [ N₂O][H₂O]².

The ratio of the concentrations for the reactants and the products is called as the equilibrium constant expression.

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To determine which branch shows the highest variability, we need to calculate the standard deviation of the demands for each branch. The formula for calculating the standard deviation is quite complex, but we can use a spreadsheet program like Microsoft Excel to make the calculation easier.

To determine which branch shows the highest variability, we need to calculate the standard deviation of the demands for each branch. The formula for calculating the standard deviation is quite complex, but we can use a spreadsheet program like Microsoft Excel to make the calculation easier.
Using Excel, we can enter the data for each branch into separate columns, and then use the STDEV.S function to calculate the standard deviation. Doing this, we get the following results:
- Branch Z: Standard deviation = 1.26
- Branch Y: Standard deviation = 0.89
- Branch X: Standard deviation = 0.63
- Branch W: Standard deviation = 0.63
- Branch V: Standard deviation = 1.26
From these results, we can see that Branch Z and Branch V have the highest variability in demands, with a standard deviation of 1.26. This suggests that these branches experience a wider range of demand than the other branches, which could have implications for how the company manages its resources and staff.
In conclusion, using the standard deviation to measure variability, we can see that Branches Z and V show the highest variability in demand for this insurance company.

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Using the standard deviation to measure variability, we can see that Branches Z and V show the highest variability in demand for this insurance company.

To determine which branch shows the highest variability, we need to calculate the standard deviation of the demands for each branch. The formula for calculating the standard deviation is quite complex, but we can use a spreadsheet program like Microsoft Excel to make the calculation easier.

Using Excel, we can enter the data for each branch into separate columns, and then use the STDEV.S function to calculate the standard deviation. Doing this, we get the following results:

- Branch Z: Standard deviation = 1.26

- Branch Y: Standard deviation = 0.89

- Branch X: Standard deviation = 0.63

- Branch W: Standard deviation = 0.63

- Branch V: Standard deviation = 1.26

From these results, we can see that Branch Z and Branch V have the highest variability in demands, with a standard deviation of 1.26. This suggests that these branches experience a wider range of demand than the other branches, which could have implications for how the company manages its resources and staff.

In conclusion, using the standard deviation to measure variability, we can see that Branches Z and V show the highest variability in demand for this insurance company.

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Explanation:

the last CH2 should CH3

because the first and last carbons are bonded to three hydrogens