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F. cyanide, carbon monoxide, and rotenone are all toxic substances that can cause harm to humans and animals. However, they differ in their chemical structure and mode of action.

Cyanide (CN-) is a highly toxic anion that binds to the heme group of cytochrome c oxidase, an essential enzyme in the electron transport chain. This binding disrupts cellular respiration, leading to a lack of oxygen supply to the body's tissues and organs. This can cause severe damage to the central nervous system and even death. Cyanide is commonly used in the production of plastics, paper, and textiles, as well as in the extraction of gold and silver.

Carbon monoxide (CO) is a colorless, odorless gas that is produced by the incomplete combustion of fuels such as gasoline, oil, and coal. It binds strongly to hemoglobin in red blood cells, reducing the amount of oxygen that can be carried to the body's tissues. This can cause headaches, dizziness, nausea, and even death in high concentrations. Carbon monoxide is commonly found in car exhaust fumes, faulty heating systems, and poorly ventilated homes.

Rotenone is a naturally occurring plant extract that is commonly used as a pesticide. It acts as an inhibitor of mitochondrial electron transport, disrupting the production of ATP in the body's cells. This can lead to paralysis and respiratory failure in insects and other pests. Rotenone has also been linked to Parkinson's disease, as prolonged exposure to the substance can damage dopamine-producing neurons in the brain.

In summary, f. cyanide and carbon monoxide disrupt oxygen supply to the body's tissues, while rotenone disrupts ATP production in the body's cells.

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The wavelength of the emitted photon is approximately 2.44 μm.

The wavelength of the emitted photon can be determined using the Rydberg formula as follow

\(\frac{1}{\lambda}=R_H\left(\frac{1}{n_1^2}-\frac{1}{n_2^2}\right)\)

where: lambda is the wavelength of the emitted photon,

\(R_H=1.0974\times10^7\text{m}^{-1} ,$n_1=19 n_2=5 :\frac{1}\)

\({\lambda}=R_H\left(\frac{1}{19^2}-\frac{1}{5^2}\right) \frac{1}\\\\\\{lambda}=1.0974\times10^7\text{m}^{-1}\left(\frac{1}{361}-\frac{1}{25}\right) \frac{1}\\{\lambda}=1.0974\times10^7\text{m}^{-1}\left(0.002709-0.04\right) \frac{1}\\{\lambda}=1.0974\times10^7\text{m}^{-1}\times(-0.037291) \frac{1}{\lambda}=-409446.34\text{m}^{-1} \lambda=-\frac{1}{409446.34\text{m}^{-1}}=2.44\times10^{-6}\text{m}\)

Therefore, the wavelength of the emitted photon is approximately 2.44 μm.

Rounded to two decimal places, this value is equal to 2.45 μm. Thus, the correct option is A) 2.45μm.

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Answer:

D) 100*C

Explanation:

Answer:

A. 0°C

Explanation:

El agua se evapora a los 0 grados

Answer:

$75

Explanation:

32(2.5) = 80 slices

80 slices / 8 slices = 10 pizzas

10/2 = 5 two pizza deals

5 x 15 = $75

Since Q is less than 1, the reaction favors the product side. This means that at equilibrium, there are higher concentrations of N2 and H2O compared to NO and H2.

Based on the given concentrations at equilibrium, we can use the law of mass action to determine the reaction quotient (Q). For this reaction,

Q = [N₂][H₂O]/([NO]²[H₂]²).
Substituting the given concentrations,

we get Q = (2.0²)/(3.0² * 2.0²)

= 4/36

= 1/9.
Since Q is less than 1, the reaction favors the product side. This means that at equilibrium, there are higher concentrations of product than reactants which means there are higher concentrations of  N₂ and H₂O compared to NO and H₂.

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Answer:

\(\boxed {\boxed {\sf SO_3}}\)

Explanation:

An empirical formula shows the smallest whole-number ratio of the atoms in a compound.

So, we must calculate this ratio. Since we are given the amounts of the elements in moles, we can do this in just 2 steps.

The first step is division. We divide the amount of moles for both elements by the smallest amount of moles.

There are 0.300 moles of sulfur and 0.900 moles of oxygen. 0.300 is smaller, so we divide both amounts by 0.300

The next step is writing the formula. We use the numbers we just found as the subscripts. These numbers go after the element's symbol in the formula. Remember sulfur is S and there is 1 mole and oxygen is O and there are 3 moles.

This formula is technically correct, but we typically remove subscripts of 1 because no subscript implies 1 representative unit.

\(\bold {The \ empirical \ formula \ for \ the \ compound \ is \ SO_3}}\)

Applications of anaerobic respiration is generating microbial fuel cell

Anaerobic respiration is the because of lack of oxygen they carry out respiration in the absence of oxygen to produce the energy they require called as anaerobic respiration

Anaerobic respiration is useful generating microbial fuel cell which employ bacteria that respire solid electron acceptor to transfer electron from reduced compound to an electrode this process can simultaneously degrade organic carbon waste and generate electricity

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Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L}\\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{5.00 \times {10}^{26} }{6.02 \times {10}^{23} } \\ = 830.5647..\)

We have the final answer as

Hope this helps you

Answer:

Tissue

Explanation:

We are not talking about cells, organs, or the organism as a whole

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pls mark brainliest if correct:)

Answer:

B!

Explanation:

Answer:

i know im late but i just really want the points. the answer is b.

Explanation:

Answer:

The arrow would be facing upwards from the counter to the icecube.

Explanation:

Heat flows from the counter to the ice causing the molecules in the counter to move more slowly.

An ice cube is placed on the counter, The arrow would be facing upwards from the counter to the ice cube. This is the property of water.

It is tasteless, odorless, or transparent, nucleus of the oxygen atom and the electrons strongly than the nuclei of the hydrogen atoms.

In water molecule oxygen is electro negative than hydrogen, results in the development of a partial negative charge on the oxygen and a partial positive charge on the hydrogen end.

Water have a strong cohesive property where the attraction of molecules with other molecules of the same kind is referred to as cohesion.

Surface tension of the water  is defined as  the tendency of  the surface to resist rupture when they are subjected to stress due to cohesive forces.

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Answer:

The value \(N_A = 0.192 \ mol \cdot m^{-2} \cdot \ s\)

Explanation:

From the question we are told that

     The thickness of the air is \(z_2 - z_1 = 1 \ cm =0.01 \ m\)

      The temperature is  \(T = 25^oc = 25 +273 = 298 \ K\)

     The total pressure is  \(P_T = 1 atm = 1.01325*10^{5} \ Pa\)

      The partial pressure of Ammonia first side is  \(P_{AO} = 0.9 \ atm = 0.9 * 1.01325*10^{5} = 91192.5 \ Pa\)

      The partial pressure of Ammonia to the second side is \(P_{A} = 0.1 \ atm = 0.1 * 1.0325*10^{5} = 10132.5 \ Pa\)

 Rate of flow of ammonia is  

          \(D_{AB} = 0.214 \ cm/s = \frac{0.214 }{10000} = 2.14 *10^{-5} \ m^2 /s\)

Generally the  molar flux of ammonia is mathematically represented as

         \(N_A = \frac{D_{AB} * P_T }{RT(z_2 -z_1)} * ln [\frac{P_T - P_{Al}}{P_T - P_{AO}} ]\)

Here R is the gas constant with value  

         \(R = 8.314 \ m^3 \cdot Pa \cdot mol^{-1} \cdot K\)

             \(N_A = \frac{2.14 *10^{-5} * 1.01325*10^{5} }{8.314 *298 (0.01)} * ln [\frac{1 - 0.1}{1 - 0.9} ]\)

=>           \(N_A = 0.192 \ mol \cdot m^{-2} \cdot \ s\)

The statements about these compounds which are true include:

This is formed when two or more elements combine together and an example is Sodium chloride from sodium and chlorine.

The body gets energy from carbohydrate and fat while compounds like protein can determine physical characteristics.

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The mass for this amount of liquid, with density of 1.4g/mL and volume, 17 mL is equals to the 23.8 grams.

We have, a liquid with the following informations,Density of liquid, D = 1.4g/mL

Volume of liquid, V = 17 mL

The density of a liquid is a measure of how heavy it is for the amount being measured. If two different liquids have the same amount or volume, the liquid that weighs more is denser. The equation to calculate density is given by the formula Density = Mass/Volume. Let the mass for this amount of liquid be 'M'.

So, D = M/V => M = D×V

Thus, Mass for this amount of liquid, M

= 1.4g/mL × 17 mL

= 1.4 × 17 g

= 23.8 grams

Hence, required mass of amount is 23.8 g.

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Answer:

D

Explanation:

Radioactivity means

the emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei

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Answer:

Explanatthe tryposphereion:

The original sample weighs 35 70 140 280 560 grammes (The half-life of carbon-14 is 5,730 years)

22920 divided by 5730 equals four half-lives. You'll have to work backwards.

1-divide the number of years by the half-life ( which should also be in years )

2- Then multiply the quantity of grammes by two four times to get the half life.35 70 140 280 560. grammes

Radiocarbon in atmospheric carbon dioxide molecules enters the biological carbon cycle, where it is taken up by green plants and transferred down the food chain to animals. In living things, radiocarbon decays slowly, and the amount lost is regularly replenished as long as the entity breathes or eats food. However, after death, the species no longer absorbs carbon-14, causing the quantity of radiocarbon in its tissues to gradually decrease. Carbon-14 has a half-life of 5,730 40 years, which indicates that half of the radioisotope present at any one moment will spontaneously dissolve during the following 5,730 years.

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Change of state occurs in portions AB and CD. In portion AB, ice melts and becomes liquid water, while in portion CD, liquid water boils and turns into water vapor. The correct answer is C.

Based on the given graph, we can analyze the different portions and make conclusions about the state of matter and changes of state that occur during the heating of ice.

Portion AB of the graph shows a slight incline in temperature from -20°C to 5°C. This indicates that the ice is gradually heating up. At the start of portion AB, the matter is in the solid state, which is ice. As the temperature increases, the ice absorbs heat energy and undergoes a change of state.

Therefore, we can conclude that a change of state takes place in portion AB, where the ice melts and transforms into water while the temperature increases.

Portion BC of the graph shows a constant temperature of 5°C. This plateau indicates that a phase change is occurring.

Since the temperature remains constant while heat is being added, we can infer that the matter is undergoing a change of state during portion BC. Therefore, we can conclude that a change of state takes place in portion BC, where the water is in the liquid state.

Portion CD of the graph shows a steady increase in temperature from 5°C to 100°C over a significant period of time. During this portion, the matter remains in the liquid state, as the temperature continues to rise. Therefore, we can conclude that matter is in the form of water in portion CD.

Portion DE of the graph shows a constant temperature of 100°C. Similar to portion BC, this plateau indicates another change of state. The water is in the liquid state, but at its boiling point.

The constant temperature suggests that heat energy is being absorbed to facilitate the phase change from liquid water to water vapor (gas). Therefore, we can conclude that a change of state takes place in portion DE, where the water vaporizes and becomes a gas.

Based on these observations, the correct conclusion is:

C. Change of state takes place in portions AB and CD.

In these portions, the ice melts and changes to liquid water (portion AB), and the liquid water boils and changes to water vapor (portion DE).

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To show the neutralization of hydroiodic acid (HI) by sodium hydroxide (NaOH), the chemical equation is as follows:

HI + NaOH → NaI + H2O

In this equation, the reactants are hydroiodic acid (HI) and sodium hydroxide (NaOH), and the products are sodium iodide (NaI) and water (H2O).

The reaction is a neutralization reaction because the acid (HI) and the base (NaOH) react to form a salt (NaI) and water (H2O), and the pH of the solution is neutral (pH 7).

The balanced chemical equation for this reaction is:

HI + NaOH → NaI + H2O

The reaction is an acid-base reaction, also known as a neutralization reaction, because an acid (HI) reacts with a base (NaOH) to produce a salt (NaI) and water (H2O).

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The element that we can be able to use for the experiment in place of potassium is sodium.

We know that the elements that can be found in the same group does react in the same way. Now we know that we have to look about among the options so that we would be able to know element that is in the same group as potassium.

Given that both sodium and potassium are members of group 1, we have to look out for the element that element thus we have to select sodium.

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The presence of enzymes and other biological factors help to overcome this barrier and facilitate the necessary chemical reactions for life to occur.

The initial energy investment needed to start a chemical reaction in a cell is called activation energy. Activation energy is the minimum amount of energy that must be input into a system for a chemical reaction to occur. This energy is required to break the existing chemical bonds in the reactants, allowing new bonds to form and creating products.

Activation energy is a critical concept in biochemistry, as it is essential for many metabolic processes to occur within living cells. Enzymes, which are biological catalysts, lower the activation energy required for reactions to occur, thereby increasing the rate of these reactions. Without enzymes, many essential chemical reactions in the cell would proceed too slowly to sustain life.

Overall, activation energy represents an important barrier to chemical reactions in living systems.

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Answer:

C. easily dissociates into ions when I’m solution

Explanation:

Strong acids are compounds that completely decompose when dissolved in water and produce the total number of ions.

Elements with high ionization energies typically also have high electronegativity values.

This is because the strength of the attraction between an atom and the electrons it contains affects both properties. The more strongly an atom attracts its electrons, the higher it's ionization energy and electronegativity.

This is because it requires more energy to remove the electrons from the atom, resulting in higher ionization energy, and it will also take more energy to attract electrons away from another atom, resulting in a higher electronegativity. This means that elements with high ionization energies typically also have high electronegativity values.

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Answer:

Explanation:

The passage is all about temperature. Remember that it is an external piece of evidence.

When you say that a reaction is exothermic, what you are really saying is that when the bonds break, the energy created must be given away.

When you say the reaction of endothermic what you are saying is that the bonds will break only if the reaction can get heat from the environment and thus make the environment feel cooler.

The answer is therefore, B

The pH of the buffer is 3.75. This is because the pKa of formic acid is 3.75, and the concentrations of the acid and its conjugate base in the buffer remain constant.

The pH of a buffer is determined by the concentrations of both the acid and its conjugate base. Since the pKa of formic acid is 3.75, this means the acid and its conjugate base must have concentrations of 0.20 M and 0.21 M respectively in order to keep the pH at 3.75. This is the case with the given buffer, therefore the pH is 3.75.

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The orange blood tube is used for the Stat Serum test. The orange tube contains a thrombin-based clot activator that rapidly clots blood to produce serum. The Stat Serum test is used to analyze various blood components, including electrolytes, proteins, enzymes, and lipids, to help diagnose and monitor a wide range of medical conditions. The orange tube is designed to stabilize the serum and prevent hemolysis or breakdown of red blood cells, ensuring accurate test results.

It is important to follow the standard coding system for blood tube colors to ensure that the correct test is performed and accurate results are obtained. The orange tube is just one of many different colored tubes used in blood testing, each with a specific purpose and additive. Following the standard coding system helps to stabilize the blood sample and ensure accurate test results. #SPJ11

Answer:

55mL

Explanation:

44g / 0.8g/mL = 55mL

Molality is the number of moles of solute dissolved in 1000 g of the solvent (mol/kg). The formula for molality is as follows:Molality (m) = moles of solute / kilograms of solventHere are the steps to calculate the molality of a solution that has 14 g of dissolved CaO in 25 kg of water:1. Convert the mass of CaO to moles. The molar mass of CaO is 56.077 g/mol.14 g CaO × (1 mol CaO / 56.077 g CaO) = 0.2495 mol CaO2. Convert the mass of water to kilograms.25 kg of water × 1000 g/kg = 25,000 g of water3. Calculate the molality of the solution.molality (m) = 0.2495 mol / 25 kg= 0.00998 mol/kgThe molality of the solution is 0.00998 mol/kg.

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 overall equation is ,

2FeSo4+heat→Fe203+SO2+SO3

Decomposition reaction is when Reactant break down into simpler parts .

For decomposition reactions require energy input. The decomposition reaction happens in our everday life. The process of digestion food is a type of decomposition ,where breakdown of food from larger to smaller particles and large amount of energy release.

The decomposition is classified into

*thermolysis

*Electrolysis

*photolysis

The overall equation will be

2FeSo4+heat→Fe2O3+SO3+So2

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Coca-Cola is making a version of Coke that uses sucrose (C12H22O11) instead of high fructose corn syrup. The molarity of sucrose in the Coke is 0.32 mol/L.

Coca-Cola is making a version of Coke that uses sucrose (C12H22O11) instead of high fructose corn syrup. If there are 39.24 grams of sucrose in a 12.0 fluid oz. can of this Coke, what is the molarity of sucrose in the Coke.

To find the molarity of sucrose in the Coke, we first need to find the number of moles of sucrose present in the can. We can use the mass of sucrose (39.24 g) and the molar mass of sucrose (342.3 g/mol) to find the number of moles of sucrose:

= (39.24 g) / (342.3 g/mol)

= 0.114 mol

Next, we need to find the volume of the can in liters. We can convert the volume in fluid oz. to liters using the conversion factor 1 fluid oz.

= 0.0295735 L:

= (12.0 fluid oz.) x (0.0295735 L/fluid oz.)

= 0.354882 L

Finally, we can use the formula for molarity (moles of solute / liters of solution) to find the molarity of sucrose in the Coke:

= molarity

= (0.114 mol) / (0.354882 L)

= 0.32 mol/L

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