To generate 5.3 moles of \(N_{5}O_{7}\), roughly 1.595 * \(10^{25}\) molecules of N are required.
To determine the number of molecules of N (nitrogen) needed to produce 5.3 moles of \(N_{5}O_{7}\), we need to consider the stoichiometry of the compound \(N_{5}O_{7}\).
The formula \(N_{5}O_{7}\) indicates that there are five nitrogen atoms (N) in one molecule of \(N_{5}O_{7}\). Therefore, we can use the concept of Avogadro's number to calculate the number of molecules of N required.
Avogadro's number states that there are 6.022 × \(10^{23}\) particles (molecules or atoms) in one mole of any substance. In this case, we need to convert the given quantity of moles (5.3 moles) to the corresponding number of molecules.
First, we calculate the number of moles of N in 5.3 moles of \(N_{5}O_{7}\):
5.3 moles \(N_{5}O_{7}\) × 5 moles N / 1 mole N5O7 = 26.5 moles N
Then, we can convert the moles of N to the number of molecules of N using Avogadro's number:
26.5 moles N × 6.022 × \(10^{23}\) molecules / 1 mole = 1.595 × \(10^{25}\) molecules of N
Therefore, approximately 1.595 × \(10^{25}\) molecules of N are needed to produce 5.3 moles of \(N_{5}O_{7}\).
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1)Predict whether the following solutions are acidic, basic or nearly neutral:
(a)
N
a
B
r
(b)
K
2
S
O
3
(c)
N
H
4
N
O
2
(d)
K
2
H
P
O
4
NaBr: Nearly neutral, K2SO3: Basic, NH4NO2: Acidic, K2HPO4: Basic
NaBr: Sodium bromide is a salt formed from a strong base (NaOH) and a strong acid (HBr). Salts of strong acids and strong bases are neutral, so NaBr is nearly neutral.
K2SO3: Potassium sulfite is a salt formed from a strong base (KOH) and a weak acid (H2SO3). Salts of strong bases and weak acids are basic, so K2SO3 is basic.
NH4NO2: Ammonium nitrite is a salt formed from a weak base (NH3) and a weak acid (HNO2). Salts of weak acids and weak bases can exhibit acidic or basic properties depending on their relative strengths. In this case, ammonium ions (NH4+) act as a weak acid, making NH4NO2 acidic.
K2HPO4: Dipotassium hydrogen phosphate is a salt formed from a strong base (KOH) and a weak acid (H3PO4). Similar to (b), salts of strong bases and weak acids are basic. Therefore, K2HPO4 is basic.
The predicted acidity or basicity of the given solutions is as follows: (a) nearly neutral, (b) basic, (c) acidic, and (d) basic. The nature of the solutions depends on the specific salts formed and the relative strengths of the acids and bases involved.
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A mixture containsNaHCO3together with unreactive components. A 1. 62 g sample of the mixture reacts withHAto produce 0. 561 g ofCO2. The molar mass ofNaHCO3is84. 01g/moland the molar mass ofCO2is44. 01g/mol. What is the percent by mass ofNaHCO3in the original mixture?
The percent by mass of \(NaHCO_3\) in the original mixture is approximately 65.99%.
To find the percent by mass of \(NaHCO_3\) in the original mixture, we need to calculate the mass of \(NaHCO_3\) in the sample and then determine the percentage.
1. Calculate the moles of \(CO_2\) produced:
First, we need to convert the mass of \(CO_2\) produced (0.561 g) to moles. We'll use the molar mass of \(CO_2\) to do this.
Molar mass of \(CO_2\) = 44.01 g/mol
moles of \(CO_2\) = mass of \(CO_2\) / molar mass of \(CO_2\)
= 0.561 g / 44.01 g/mol
= 0.01274 mol (approximately)
2. Calculate the moles of \(NaHCO_3\):
Since the balanced chemical equation for the reaction between \(NaHCO_3\) and HA (assuming HA is an acid) is not provided, we can't directly determine the stoichiometry. However, we can use the information given to determine the moles of \(NaHCO_3\) by assuming that all the \(CO_2\) produced comes from the \(NaHCO_3\).
moles of \(NaHCO_3\) = moles of \(CO_2\)
= 0.01274 mol (approximately)
3. Calculate the mass of \(NaHCO_3\):
Now, we can calculate the mass of \(NaHCO_3\) using its molar mass.
Molar mass of \(NaHCO_3\) = 84.01 g/mol
mass of \(NaHCO_3\) = moles of \(NaHCO_3\) × molar mass of \(NaHCO_3\)
= 0.01274 mol × 84.01 g/mol
= 1.067 g (approximately)
4. Calculate the percent by mass of \(NaHCO_3\):
The percent by mass is calculated by dividing the mass of \(NaHCO_3\) by the total mass of the mixture and multiplying by 100.
percent by mass of \(NaHCO_3\) = (mass of \(NaHCO_3\) / total mass of the mixture) × 100
= (1.067 g / 1.62 g) × 100
= 65.99% (approximately)
Therefore, the percent by mass of \(NaHCO_3\) in the original mixture is approximately 65.99%.
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Mrs. Keep burns a walnut under a beaker of water. The beaker contains 100 g of water which warms from 25oC to 30oC. Assuming that all the heat from the burning walnut goes into the water and none of the heat is lost to the air or the beaker, how many calories are in the walnut?
a 2100 calories
b 10,500 calories
c not enough information is given
d 500 calories
The amount of heat gained by the water is 500 calories. Thus, option D is correct.
Given:
Mass of water (m) = 100 g
Change in temperature (ΔT) = 30°C - 25°C = 5°C
The specific heat capacity of water (c) is approximately 1 calorie/gram°C.
Now, the amount of heat gained by the water,
Q = mcΔT
Where:
Q is the heat gained or lost by the substance
m is the mass of the substance
c is the specific heat capacity of the substance
ΔT is the change in temperature
Plugging in the values into the formula:
Q = 100 × 1 × 5
Q = 500 calories
Therefore, the amount of heat gained by the water is 500 calories.
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find the density of the gas sulfur dioxide at 420 k and 29.9 kpa.
The density of sulfur dioxide gas at 420K and 29.9 kPa is 1.82 g/L.
Determine the density of a gas?To find the density of a gas, we can use the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.
To calculate the density (d), we can rearrange the ideal gas law equation as follows: d = (molar mass * P) / (R * T), where the molar mass of sulfur dioxide (SO₂) is 64.06 g/mol.
First, we convert the given pressure from kPa to Pa by multiplying by 1000: 29.9 kPa * 1000 = 29900 Pa.
Next, we substitute the values into the formula: d = (64.06 g/mol * 29900 Pa) / (8.314 J/(mol·K) * 420 K).
After performing the calculation,
Therefore, the density of sulfur dioxide gas at 420K and 29.9 kPa is approximately 1.82 g/L.
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Complete question here:
Find the density of the gas sulfur dioxide at 420K and 29.9 kPa.
2.86g/L
0.548 g/L
0.844 g/L
1.82 g/L
Help me please ????
Answer:
I think it is more that one is correct, so sorry if I'm wrong, if it isn't, it is one of the electron bonding ones
What happens to the luminosity of stars in the main sequence as temperature decreases
Assertion: baking soda can be manufactured from nacl, h2o, co2 and nh3 reason: washing soda can be manufactured by heating baking soda.
The assertion, "Baking soda can be manufactured from nacl, H2O, CO2 and NH3" is: correct, and the reason, "Washing soda can be manufactured by heating baking soda." is: also correct and provides a logical explanation for the assertion.
Baking soda (sodium bicarbonate, NaHCO3) can indeed be manufactured from the combination of NaCl (sodium chloride), H2O (water), CO2 (carbon dioxide), and NH3 (ammonia).
The process involves several steps.
First, ammonia (NH3) is reacted with carbon dioxide (CO2) to form ammonium carbonate (NH4)2CO3.
Next, ammonium carbonate is further reacted with sodium chloride (NaCl) and water (H2O) to produce sodium bicarbonate (NaHCO3), also known as baking soda.
This reaction results in the formation of ammonium chloride (NH4Cl) as a byproduct. The overall reaction can be represented as follows:
2NH4Cl + CO2 + H2O + NaCl → 2NaHCO3 + NH4Cl
The reason provided states that washing soda can be manufactured by heating baking soda, which is also correct.
Heating baking soda (NaHCO3) drives off carbon dioxide (CO2) and results in the formation of sodium carbonate (Na2CO3), commonly known as washing soda. The reaction can be represented as follows:
2NaHCO3 → Na2CO3 + H2O + CO2
Therefore, the reason complements the assertion by explaining a subsequent transformation of baking soda into washing soda through a thermal decomposition reaction.
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Baking soda can be produced from sodium chloride, water, carbon dioxide, and ammonia. It reacts with an acid in baking, leading to gas formation which makes the batter 'rise'. Baking soda can then be converted into washing soda by heating.
Explanation:The process of producing baking soda (sodium bicarbonate) involves a series of chemical reactions involving nacl (sodium chloride), h2o (water), co2 (carbon dioxide), and nh3 (ammonia). The resultant baking soda can then be converted into washing soda, another useful household substance, through heating. This is a classic example of acid-base chemistry.
When it comes to baking, baking soda reacts with an acid (like lemon juice or buttermilk) in batter, leading to the formation of bubbles of carbon dioxide from the decomposition of the resulting carbonic acid. The release of this gas causes the batter to 'rise' which is a crucial part of baking.
Furthermore, baking soda can be used as an ingredient in cleaning agents, toothpaste, and antacids due to its chemical properties. Therefore, the statement made in your question is indeed accurate: these substances can be manufactured from the given ingredients using chemistry.
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What do people mean when they say the water cycle is a continuous cycle
Answer:
The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow.
Explanation:
Explanation:
It is understood that water cycle is also a continuous cycle because it is the continuous movement of water from the earth’s surface to the atmosphere and then back to the ground. It is a continuous process. Hence, it does not have a starting or an ending point.
What is the volume of a box measuring 2cm by 3cm by 4cm?
I The answer is 42 cubic cm
Sugar is a compound made of the elements hydrogen, carbon, and oxygen. Which element is left on the spoon after the sugar is heated?
Answer:
carbon is the element left on the spoon after the sugar is heated.
The carbon element is left on the spoon after the sugar is heated.
What are compounds?Compounds is defined as a material formed by chemical bonding between two or more chemical element.
Elements are defined as a species of atoms that has given number of protons in their nuclei, including pure substance consisting only of that species.
Elements are fundamental materials of which all the matter is composed.
Sugar is a compound made up of hydrogen, carbon and oxygen are the elements present in it.
Thus, the carbon element is left on the spoon after the sugar is heated.
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Show work please!!
68.5 grams of a certain compound contains 5.25 x 10^23 molecules. What is the molar mass of the compound?
The molar mass of the compound is 78.6 g/mol.
What is the molar mass of the compound?
In this problem, we are given the mass of a certain compound, which is 68.5 grams, and the number of molecules in this mass, which is 5.25 x 10^23. We need to find the molar mass of the compound.
First, we need to convert the number of molecules to moles, using Avogadro's number:
1 mole = 6.022 x 10^23 molecules
So, the number of moles of the compound is:
n = 5.25 x 10^23 / 6.022 x 10^23
n = 0.871 moles
Now we can calculate the molar mass of the compound:
molar mass = mass / amount of substance
molar mass = 68.5 grams / 0.871 moles
molar mass = 78.6 g/mol
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choose the correct relation between the rms speed of the gas molecules and the velocity of sound in that gas in identical situations of pressure and temperature. [y: adiabatic exponent of the gas]
The relation between the root mean square (rms) speed of gas molecules (v_rms) and the velocity of sound (v_sound) in a gas with an adiabatic exponent (y) is:
\(v_rms = √((y * R * T) / M)\)
where R is the gas constant, T is the temperature, and M is the molar mass of the gas.
The rms speed of gas molecules represents the average speed of the molecules in the gas. The velocity of sound is related to the average speed at which the gas molecules can transmit a pressure wave. In an ideal gas, the rms speed is directly proportional to the velocity of sound. The proportionality constant is determined by the adiabatic exponent (y), which relates the specific heat capacities of the gas at constant pressure and constant volume. The equation shows that as the rms speed of gas molecules increases, the velocity of sound in the gas also increases, given identical conditions of pressure and temperature.
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Short-chain organic acids are mostly used in foods that have a pH<5.5 because...a. they taste better in those foods.b. only at low pH the acid can penetrate the microbial cellmembrane.c. that is how the consistency of the food is maintained.d. these acids remain protonated at pH>5.5.
The Short-chain organic acids are mostly used in foods that have the pH of the food, the type of microorganisms present, and the desired flavor profile.
This property makes them effective as preservatives because they can kill or inhibit the growth of microorganisms. These acids are also known for their flavor-enhancing properties, which is why they are commonly used in the food industry. However, it is important to note that not all short-chain organic acids are effective at low ph. For instance, some may not penetrate the microbial cell membrane as effectively as others. In addition, these acids remain protonated at pH>5.5, making them less effective at preserving foods with higher ph. Overall, the use of short-chain organic acids in food preservation is a complex topic that requires careful consideration of various factors, including the pH of the food, the type of microorganisms present, and the desired flavor profile.
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State what would most likely happen to the rate of the enzyme action if the temperature
were reduced by 10 degrees?
Answer:
The reaction will slow down because it is below the optimal temperature.
Explanation:
Enzymes catalyses a reaction and thus increases its rate. The rate of enzyme action is dependant on temperature by Arrhenius equation. If the temperature reduces 10 degree celsius, then the rate enzyme action rate will also decreases accordingly.
What are enzymes?An enzyme is a biological catalyst. They increases the rate of chemical reactions by attaining equilibrium fastly. This is achieved by decreasing the activation energies of the reactants.
There are various kinds of enzymes which are specific in their function and specific to some substrates. The temperature at which an enzyme shows its maximum activity is called optimum temperature.
The Arrhenius equation showing the relation between rate of reaction and temperature is:
\(K = Ae^{- \frac{E_{a}}{RT} }\)
Hence, as the temperature increases rate also increase. The enzyme activity also. Therefore if the temperature reduces the enzyme activity reduces.
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Only two students are allowed in a workspace ? True or false?
Answer:
It can be true but I think that more than 2 persons can study together
Explanation:
Immunotherapy attacks cancer cells by boosting:
a. The rate of cell division
b. The number of benign tumors
c. The frequency of body scans
d. The body's own defenses
Answer:
I think its the
d. The body's own defenses
Question 1 Multiple Choice Worth 2 points)
(03.05 LC)
Which statement is true?
Answer:
I need more information. What is the question?
Answer:
what are the statements?
Explanation:
A fatty acid composed of 20 carbon atoms undergoes β‑oxidation.
How many acetyl CoA, FADH2, and NADH does β‑oxidation of this fatty acid generate? (answer is 10 acetyl CoA, 9 FADH2, 9 NADH)
Calculate the net ATP generated by the β‑oxidation of the 20‑carbon fatty acid. Assume that each FADH2 generates 1.5 ATP and each NADH generates 2.5 ATP.
number of ATP molecules: ??????
The net ATP generated by the β-oxidation of the 20-carbon fatty acid is 156 ATP.
The β-oxidation of a 20-carbon fatty acid generates 10 acetyl CoA, 9 FADH₂, and 9 NADH.
To calculate the ATP yield, use the following conversion factors:
Each acetyl CoA entering the citric acid cycle generates 12 ATP.
Each FADH₂ generates 1.5 ATP.
Each NADH generates 2.5 ATP.
Acetyl CoA:
10 acetyl CoA × 12 ATP/acetyl CoA = 120 ATP
FADH₂:
9 FADH₂ × 1.5 ATP/FADH₂ = 13.5 ATP
NADH:
9 NADH × 2.5 ATP/NADH = 22.5 ATP
120 ATP (from acetyl CoA) + 13.5 ATP (from FADH2) + 22.5 ATP (from NADH) = 156 ATP
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A(n) ____________ acts to maintain a relatively stable concentration of hydrogen ions in a solution.
Answer:
buffer
Explanation:
what would most likely occur if you applied alcohol for only one second
We can see here that if you apply alcohol for only one second, it is unlikely to have a significant effect. Alcohol typically requires a longer exposure time to effectively disinfect or have noticeable effects.
What is alcohol?Alcohol refers to a broad category of organic compounds that contain a hydroxyl (-OH) functional group attached to a carbon atom. In everyday usage, the term "alcohol" commonly refers to a specific type of alcohol called ethanol or ethyl alcohol. Ethanol is a clear, volatile liquid that is commonly used as a recreational beverage (in alcoholic beverages), as a solvent in various industries, and as a disinfectant or antiseptic.
Alcohol can also refer to other types of compounds with similar functional groups, such as methanol and isopropyl alcohol
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Compare the type of change that occurs when a match is burnt and when a liquid starts boiling. Use complete sentences to justify the type of change that occurs. (10 points)
Answer: liquid boiling is a reversable chemical change.
Explanation: you can alter the temperature to prevent it from boiling
he levels of organization within an organism are __________, molecule, cell, __________, organ, and organ system.
Answer:
atom and tissue
Explanation:
atoms makes up molecules which makes up cell which makes up tissue which comes together to make up organs
What is the name of the ionic compound CaO?
calcium oxygen
calcium oxide
calcium(I) oxide
calcium(II) oxide
Answer:
Calcium Oxide.
Explanation:
Ca + O = CaO.
Calcium + Oxygen = Calcium Oxide.
The name of the ionic compound CaO is calcium oxide. The correct option is b.
What are ionic compounds?Positively charged ions, known as cations, and negatively charged ions, known as anions, make up ionic compounds, which are neutral substances.
The name of the cation is written first, followed by the name of the anion, for binary ionic compounds (ionic compounds that only contain two types of elements).
Calcium oxide is a chemical compound that is also called quicklime. It is used as a crystalline solid and is caustic in nature. It is used as desulfurization for the material. It is also called burnt lime.
The compound contains calcium and oxygen, whose symbols are Ca and O.
Ca + O = Cao
Therefore, the correct option is b. calcium oxide.
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What is the approximate volume of gas in a 1.50 mol sample that exerts a pressure of 0.922 atm and has a temperature of 10.0ºC (283 K)? (R= 0.0821 L atm over mol K )
PV = nRT
V= ___ L (Answer Format: XX.X)
The approximate volume of the gas is 31.0 L in a 1.50 mol sample that exerts a pressure of 0.922 atm and has a temperature of 10.0ºC .
We can use the Ideal Gas Law equation:
PV = nRT
where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.
Rearranging the equation, we get:
V = (nRT) / P
Substituting the given values, we get:
V = (1.50 mol * 0.0821 L atm/mol K * 283 K) / 0.922 atm
V = 31.0 L
A gas law is a mathematical equation that describes the behavior of gases under certain conditions, such as temperature, pressure, volume, and number of moles. There are several gas laws, including Boyle's law, Charles's law, Gay-Lussac's law, and the combined gas law, among others. These laws are based on experimental observations of gas behavior and provide a way to predict how gases will behave under various conditions.
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HELPP!!!
A 6.28 L balloon is filled with water at 3.93 atm. If the balloon is
squeezed into a 3.25 L beaker and does NOT burst, what is the
pressure of water in the balloon?
a. 7.59
b. 2.03
c. 80.2
d. 0.0893
which type of chemical reaction takes place in an electrolytic cell
Answer:
The reaction that takes place in an electro-chemical cell is the Redox reaction, a type of reversible reaction combining both oxidation and reduction reactions.
a liquid that occupies a volume of 5.0L gas a mass of 6.0 kg. what is the density of the liquid in kg/L?
Answer:
1.2Kg/l
Explanation:
Density=Mass/Volume
Density=6.0/5.0
Density=1.2Kg/l
What kind of device in a circuit supplies voltage? What kind of device acts as a resistor?
Battery device in a circuit which supplies voltage. Battery is a electrical component which converts chemical energy into electrical energy using the process electrochemical oxidation-reduction reaction. Voltage is also called as potential difference which means the difference between two electropotentials of battery.
Resistor is a electronic component which offer resistance in the circuit. Resistor main purpose which opposes current flow in the circuit. Resistor are available in two categories linear resistors(metal oxide resistor ,potentiometer) and non linear resistors (photo resistor and thermistor)
The above two electronic components are played important keyrole in electronic circuit.
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for the following reaction: 1 CuO + 1 H2 --> 1 Cu +1H2O, what is the quantity of moles of H2O when there are 240 grams of CuO present?
Considering the reaction stoichiometry, the quantity of moles of H₂O produced is 3.02 moles.
The balanced reaction is:
CuO + H₂ → Cu + H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
CuO= 1 moleH₂= 1 moleCu= 1 moleH₂O= 1 moleThe molar mass of the compounds present in the reaction is:
CuO= 79.55 g/moleH₂= 2 g/moleCu= 63.55 g/moleH₂O: 18 g/moleThen, by reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of mass of each compound participate in the reaction:
CuO= 1 mole× 79.55 g/mole= 79.55 gramsH₂= 1 mole× 2 g/mole= 2 gramsCu= 1 mole× 63.55 g/mole= 63.55 gramsH₂O: 1 mole× 18 g/mole= 18 gramsThen, it is possible to determine the moles of H₂O necessary by the following rule of three: If by reaction stoichiometry 79.55 grams of CuO produces 1 mole of H₂O, 240 grams of CuO produces how many moles of H₂O?
\(molesofH_{2} O=\frac{240 grams of CuOx 1 mole ofH_{2} O }{79.55 grams of CuO}\)
moles of H₂O= 3.02 moles
Finally, the quantity of moles of H₂O produced is 3.02 moles.
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brainly.com/question/11999193 brainly.com/question/15111313?referrer=searchResults brainly.com/question/9926203?referrer=searchResults brainly.com/question/6061451?referrer=searchResultsThe final electron acceptor in aerobic respiration is....... NAD water oxygen pyruvate O hydrogen . Answer al Question 16 Which of the following processes generate carbon dioxide? Hint There are more than one. Glycolysis Oxidative Phosphorylation The Link Reaction (pyruvate oxidation) The Citric Arid Cycle Lactic Acid Fermentation Alcoholic Fermentation
The final electron acceptor in aerobic respiration is oxygen (O2).The electron transport chain (ETC) in cellular respiration relies on a final electron acceptor to help oxygen get reduced into water. This is why oxygen is considered the final electron acceptor in cellular respiration.
During cellular respiration, glucose is broken down into pyruvate. Pyruvate is then transformed into acetyl CoA and enters the citric acid cycle, where it is oxidized and generates ATP, NADH, and FADH2. The final stage of aerobic respiration involves the electron transport chain, in which electrons from NADH and FADH2 are passed through a series of proteins and coenzymes in the inner mitochondrial membrane, ultimately reducing oxygen to form water.
This process is known as oxidative phosphorylation.In conclusion, the final electron acceptor in aerobic respiration is oxygen (O2), and carbon dioxide is generated in the link reaction (pyruvate oxidation) and the citric acid cycle.
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