In carbon monoxide poisoning the CO replaces the O_2 adsorbed on hemoglobin (Hb) molecules in the blood. To show the effect, consider a model for which each adsorption site on a heme my be vacant or may be occupied with energy epsilon_A by one O_2 molecule or with energy epsilon_B by one CO molecule. Let N fixed heme sites be in equilibrium with O_2 and CO in the gas phases at concentrations such that the activities are lambda (O_2) = 1 times 10^-5 and lambda (CO) = 1 times 10^-7, all at body temperature 37 degree C. Neglect any spin multiplicity factors. (a) First consider the system in the absence of CO. Evaluate epsilon_A such that 90% of the Hb sites are occupied by of O_2. Express the answer in eV per O_2. (b) Now admit the CO under the specified conditions. Find epsilon_B such that only 10% of the Hb sites are occupied by O_2.

Answer:

because each atom of helium occupies space. ... State a change in pressure that will cause the helium in the cylinder to behave more like an ideal gas.

Explanation:

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, the sample of helium can not be compressed to zero volume because each atom of helium occupies space.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles. The sample of helium can not be compressed to zero volume because each atom of helium occupies space.

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

PV=nRT

where,

P = pressure of gas

V= volume of gas

n =number of moles of gas

T =temperature of gas

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

Therefore, the sample of helium can not be compressed to zero volume because each atom of helium occupies space.

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An atom or molecule obtains one or more electrons during the reduction process, which causes a change in the positive or negative charge of the atom or molecule. Reduction is the process of reducing a material

An atom, molecule, or ion gains one or more electrons during the reduction process in chemistry. As a result, the chemical undergoing reduction experiences a drop in oxidation state or a rise in negative charge. Reduction can be caused by adding electrons to a system by using a reducing agent, or it can happen naturally, as when oxygen gas is reduced to water during cellular respiration. Several biological and commercial processes, including the synthesis of organic molecules and the extraction of metals from their ores, depend on reduction.In chemistry, reduction is a process that involves the gain of one or more

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Reaction A - Decomposition reaction

Reaction B - Combustion reaction

Reaction C - Neutralization reaction

Reaction D - Syntseis reaction

A chemical reaction is a process that results in the transformation of one set of chemical substances into another. Chemical reactions occur when the bonds between atoms in the reactants are broken and new bonds are formed to create new chemical compounds. This process is accompanied by a release or absorption of energy.

Chemical reactions are often characterized by changes in color, temperature, pressure, or the release of gas or light. They can be described using chemical equations, which represent the reactants and products using chemical formulas and show the balance of atoms on both sides of the reaction.

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Government regulatory bodies are essential in the protection of our water supply.

Protection is the act of defending oneself, one's property, or another person from physical, emotional, or financial harm. It involves shielding, guarding, and defending oneself or another person from danger or risk. It is an important concept, especially in the context of safety, security, and self-care.

These bodies are responsible for setting standards and regulations that ensure that the water that is used for drinking, cooking, and other activities is safe for human consumption. They also monitor the quality of water and investigate complaints of water contamination. By setting standards for water quality and monitoring for compliance, these organizations help to ensure that our water supply is safe and healthy. Additionally, they can take enforcement action against companies or individuals who break the regulations and pollute our water supply.

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Answer:

then it is 5

Explanation:

because i said it is

Moles are the unit of measurement that estimates the amount of the substance in a sample. It directly compares the amounts of substances. Thus, option c is correct.

Moles are said to be the SI unit to estimate the number of substances like atoms, molecules, ions, etc., in a sample. It is used to measure the elementary entities that are small in size.

It is abbreviated as mol and is equivalent to 6.02214076 × 10²³ particles (Avogadro number). It can be calculated by mass and the molar mass of the substance and is shown as,

Moles (n) = mass ÷ molar mass

Where mass is given in grams and molar mass in grams/ mol.

The moles are used to estimate the molarity and are also used in the ideal gas equation. The moles will be more in the substance with less molar mass and vice versa.

Therefore, option c. moles directly compares the amounts of substances.

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The atoms of helium are required to equalize the mass of a silver atom is 8.4 x 10 ⁻⁴⁸.

Atoms are the minute particles that are present inside elements.

Atomic mass of silver is 107.86 g/mol

Mass of one atom of silver will be

\(\dfrac{ 107.86 }{6.022 \times 10^{-23}} = 1.79 \times 10^2^4\)

Atomic mass of helium is 6.941

\(\dfrac{6.022 \times 10^{-23}}{4.0 \times 1.79 \times 10^2^4 } = 8.4 \times 10^{-48}\)

Thus, the atoms of helium are required to equalize the mass of a silver atom is 8.4 x 10 ⁻⁴⁸.

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Answer: the answer is a=10m/s^2 right

Explanation: it just make more since then the other answers .

Answer:

c 10

Explanation:

ape.x verified

Answer: Your answer is Chemical weathering.

Hope this helps!

Answer:

chemical

Explanation:

I hope it help.........

Answer: 0.1M NaH2PO4 & 0.1M Na2HPO4

Explanation:

Answer:

\(v_{solute}=25mL\)

Explanation:

Hello there!

In this case, according to the by-volume concentration of this solution, it is possible for us to use its mathematical definition as shown below:

\(\%v=\frac{v_{solute}}{v_{solution}}*100\%\)

Thus, given the percent and the volume of the solution, we can solve for the volume of ethanol (solute) as shown below:

\(v_{solute}=\frac{\%v*v_{solution}}{100\% }\\\\v_{solute}=\frac{5.00\%*500mL}{100\%}\\\\ v_{solute}=25mL\)

Best regards!

Answer:

They are positively charged

Explanation:

Hope it will help you

Protons are the sub-atomic particles present within the nucleus of the atom. The protons determine the atomic number and carry a positive charge. Thus, options c and d are correct.

Protons have been discovered as the smallest unit or particle of the atom. They are present in the nucleus of the atom situated in the middle along with the neutrons. The protons alone are the characteristics to determine the atomic number and property of the element in the periodic table.

The protons have also been discovered to have a positive charge (+1) on them that binds the atom and electron by the attractive forces. They are heavier than the other particles and are the determinant of the chemical element.

Therefore, options c and d. protons are equivalent to atomic numbers and carry a positive charge is correct.

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Higher solubility of \(Ag_{2}S\)

Explanation:

The reason why \(Ag_{2}S\) (silver sulfide) is more soluble than CuS (copper sulfide) can be attributed to the difference in their solubility products and the nature of the metal ions involved.

1. Solubility products: Solubility product (Ksp) is a measure of the equilibrium between a solid and its ions in a solution. A higher Ksp value indicates greater solubility. \(Ag_{2}S\) has a higher Ksp value compared to CuS, making it more soluble.

2. Metal ions:  \(Ag^{+}\) ions are larger and have a lower charge density compared to \(Cu^{2+}\) ions. Lower charge density results in weaker electrostatic attraction between the metal ions and the sulfide ions, making it easier for \(Ag_{2}S\) to dissolve in water compared to CuS.

In conclusion, \(Ag_{2}S\) is more soluble than CuS due to its higher solubility product and the nature of the metal ions involved.

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Answer:

Solid and Liquids

Explanation:

Solid has both definite shape and volume

It's stays on what is there natural appearance.. while

Liquid has definite volume but has indefinite shape

Answer:

\(\boxed {\boxed {\sf Solids \ and \ liquids}}\)

Explanation:

Let's review the 3 main states of matter:

Solid:

Liquid:

Gas:

So, we see that the 2 states of matter with definite volume are solids and liquids.

The mean of the diastolic blood pressures for females is 98 - 70.2 = 27.8 mmHg. The highest diastolic blood pressure is significantly high.

a. The difference between the highest diastolic blood pressure and the mean of the diastolic blood pressures for females is 98 - 70.2 = 27.8 mmHg.

b. The difference found in part (a) is 27.8 mmHg, and the number of standard deviations is 27.8/11.2 ≈ 2.48.c. To convert the highest diastolic blood pressure to a z score, we use the formula:z = (x - µ)/σ,where x is the value, µ is the mean, and σ is the standard deviation.z = (98 - 70.2)/11.2 ≈ 2.48d. Using the criteria summarized in Figure 3-6 on page 123, a z score of 2.48 is significantly high. Therefore, the highest diastolic blood pressure is significantly high.

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Answer: transcribing information to the dna sequence for use by the cell

Explanation:

Answer:

Vaporization

Since the question does not specify what molecule is being acted upon by the increment in temperature, I'll assume it's water.

When first taken out of the fridge, water is in the form of ice, and it has not been affected by a change in temperature yet, so it's at the origin.

(origin = ice)

As you raise the temperature, however, the ice starts to melt, and melting occur during phase 2. You have to keep the temperature constant for the process to properly occur.

(phase 2 = melting)

After it finishes melting, the ice is now in it's liquid state, which is water. The temperature continues to rise in order to proceed to the next phase.

(2nd slope = water)

Lastly, Water is being vaporized during phase 4. Notice, the temperature is kept constant in order to allow the process to properly occur.

(phase 4 = vaporization)

To buy two chocolate bars, one pack of peanuts, and a can of soda with a snack machine that only accepts 5-centavo coins, we need to Solve the Equation to calculate the total cost and the number of coins required. The answer to this question is 21 coins.

One chocolate bar costs 25 cent, so two chocolate bars cost 25 x 2 = 50 cent.One pack of peanuts costs 75 cent.A can of soda costs 50 cent.The total cost of these snacks is 50 + 75 + 50 = 175 cent.Now, we need to find how many 5-centavo coins make up 175 cent.1 centavo is equal to 0.05 cents.Therefore, 175 cent is equal to 175/0.05 = 3,500 centavos.

To find the number of 5-centavo coins required, we need to divide 3,500 by 5.3,500 ÷ 5 = 700 coins.So, it will take 700 5-centavo coins to buy two chocolate bars, one pack of peanuts, and a can of soda.

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With an average residence time of 400 million years, carbon in sedimentary rocks plays a minor role in the circulation of carbon over shorter periods of time.

All of the reservoirs on Earth contain carbon. Sedimentary rocks like coal, chalk, limestone, and shale contain the majority of it. However, carbon in sedimentary rocks, which has a residence length of 400 million years on average, plays a small role in the global carbon cycle over shorter times.

After 1,000 years, the air would still contain between a third and a half of the CO2 emissions if all recoverable fossil fuels were burned up using today's technologies. According to Hansen and colleagues, "for all practical purposes, 500 to 1000 years is 'forever'."

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Answer:

Mass = 17.8 g

Explanation:

Given data:

Number of atoms of Ca = 2.68 × 10²³

Mass in gram = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

2.68 × 10²³ atoms × 1 mole  /6.022 × 10²³ atoms

0.445 mol

Mass in gram;

Mass = number of moles ×  molar mass

Mass = 0.445 mol  ×  40 g/mol

Mass = 17.8 g

The balanced equation for the reaction between hydrogen chloride gas (HCl) and silicon (Si) is as follows: Si(s) + 3 HCl(g) → SiHCl3(g) + H2(g). The complete reaction would produce approximately 20.32 grams of trichlorosilane gas.

To determine the mass of trichlorosilane gas (SiHCl3) produced by the complete reaction of 5.61 grams of silicon, we need to use stoichiometry.

First, calculate the molar mass of SiHCl3:

Si: 28.09 g/mol

H: 1.01 g/mol (3 hydrogen atoms)

Cl: 35.45 g/mol (1 chlorine atom)

Total: 28.09 + 3(1.01) + 35.45 = 101.62 g/mol

Next, convert the mass of silicon (5.61 grams) to moles using its molar mass (28.09 g/mol):

5.61 g Si × (1 mol Si/28.09 g Si) = 0.2 mol Si

From the balanced equation, we know that the mole ratio between Si and SiHCl3 is 1:1. Therefore, 0.2 mol of Si will produce 0.2 mol of SiHCl3.

Finally, convert moles of SiHCl3 to grams using its molar mass:

0.2 mol SiHCl3 × (101.62 g SiHCl3/1 mol SiHCl3) ≈ 20.32 g of trichlorosilane gas.

Therefore, approximately 20.32 grams of trichlorosilane gas would be produced by the complete reaction of 5.61 grams of silicon.

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Since Qp>Kp , the reaction is not at equilibrium.

The equilibrium constant shows the extent to which reactants are converted into products.

Now we have to obtain the Qp as follows;

Qp =[CH3OH]/[CO] [H2]^2

Qp = 0.265/(0.265) (0.265)^2

Qp = 14.2

Now we know that Kp = 6.09×10−3, Since Qp>Kp , the reaction is not at equilibrium.

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No, the volume of water in a beaker is not an extensive property.

Extensive properties are those that depend on the amount or size of the substance being measured. In other words, they are properties that change with the quantity of the substance. Examples of extensive properties include mass, volume, and total energy.

In the given scenario, the volume of water in the beaker is 50 milliliters. This volume remains the same regardless of the quantity of water present. Whether it's 50 milliliters or 500 milliliters, the volume measurement does not change. Therefore, the volume of water in the beaker is an example of an intensive property.

Intensive properties are independent of the amount or size of the substance. They are characteristics that remain constant regardless of the quantity of the substance. Examples of intensive properties include temperature, density, and color.

It's important to note that the distinction between extensive and intensive properties depends on the specific property being considered. While volume is typically an extensive property for a bulk substance, in the case of a fixed volume of water in a beaker, it becomes an intensive property.

In summary, the volume of water in a beaker is not an extensive property but rather an intensive property because it does not change with the quantity of the substance.

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Answer:

yea hold them in your hand for a while and your hand will look like a rainbow

Explanation:

Answer:

Explanation: It will not

All of the following are qualitative tests that are often used to identify unknown ionic compounds except titration.

Qualitative tests are conducted to determine the presence or absence of certain ions or compounds in a sample based on their characteristic reactions. Common qualitative tests include flame tests, precipitation reactions, color changes, and gas evolution tests.

Titration, on the other hand, is a quantitative technique used to determine the concentration of a specific substance in a solution by reacting it with a standardized solution of another substance. It is not typically used as a qualitative test for identifying unknown ionic compounds.

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To contain five electrons with three of them unpaired, we need five degenerate orbitals.

Orbitals within the same energy level in an atom or molecule that have the same energy are called degenerate orbitals. This implies that electrons in these orbitals have the same amount of energy and are therefore indistinguishable from each other.

If there are multiple orbitals with the same energy level, then they are said to be degenerate orbitals.

This is because each degenerate orbital can hold a maximum of two electrons with opposite spins. Since three of the five electrons need to be unpaired, we need three separate degenerate orbitals to hold these unpaired electrons. The remaining two electrons can be paired in the other two degenerate orbitals.

Therefore, we need five degenerate orbitals in total to contain the five electrons with three of them unpaired.

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