Tổng số hạt e, p, n của nguyên tử M là 40, số hạt mang điện hơn số hạt không mang điện
là 12. Tổng số hạt e, p, n của ng.tử X là 24, số hạt mang điện hơn số hạt không mang điện là 8.
a, Tìm số hiệu, số khối của các nguyên tử M và X.
b, M sẽ mất hay thu thêm bao nhiêu electron, X sẽ mất hay thu thêm bao nhiêu electron để
đạt cấu hình bền vững ?

Answer:

tells you by mass what percent of each element is present in a compound.

Explanation:

To determine the amount of filtrate formed in 1 minute, we use the given information that 10% of renal blood flow becomes filtrate. If the renal blood flow is 1 L/min, then 10% of that is 100 ml/min.

2. To find the amount of filtrate formed in 1 hour, we multiply the filtrate formed per minute (100 ml/min) by the number of minutes in an hour (60). This gives us 6,000 ml or 6 L of filtrate formed in 1 hour.3. For the amount of filtrate formed in 1 day, we multiply the filtrate formed per minute (100 ml/min) by the number of minutes in a day (1,440). This gives us 144,000 ml or 144 L of filtrate formed in 1 day.

4. To calculate the amount of filtrate reabsorbed per day, we subtract the amount of urine formed per day from the amount of filtrate formed per day. Given that roughly 2 L of urine are formed per day, the amount of filtrate reabsorbed would be 144 L - 2 L = 142 L. 5. The purpose of forming such a large amount of filtrate can be understood in terms of kidney function. The kidneys play a vital role in maintaining homeostasis by regulating the balance of various substances in the body. The filtration process allows for the removal of waste products, excess ions, and toxins from the blood. Additionally, it allows for the selective reabsorption of essential substances back into the bloodstream, ensuring their retention and proper functioning in the body. The large amount of filtrate formed provides the kidneys with a higher chance of effectively filtering waste and maintaining appropriate levels of essential substances.

6. To calculate the amount of filtered sodium (Na+) per day, we need to consider the glomerular filtration rate (GFR) and the concentration of plasma Na+. Given that the GFR is 125 ml/min and the plasma Na+ concentration is 140 mM (millimolar), we can multiply these values to find the amount of Na+ filtered per minute. This gives us 125 ml/min * 140 mM = 17,500 millimoles of Na+ filtered per minute. To convert this to per day, we multiply by the number of minutes in a day (1,440).

Thus, the amount of Na+ filtered per day would be 17,500 millimoles/min * 1,440 min/day = 25,200,000 millimoles or 25,200 moles of Na+ per day.

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In the context of atomic orbital (AO) wavefunctions, the terms "radial node" and "nodal plane" refer to different aspects of the wavefunction's behavior.

A radial node is a region in the AO wavefunction where the probability of finding an electron is zero along the radial direction. In other words, it represents a spherical shell where the electron is unlikely to be found. The number of radial nodes is determined by the principal quantum number (n) of the orbital. For example, the 2s orbital has one radial node, while the 2p orbital has no radial nodes.

On the other hand, a nodal plane is a flat plane within the AO wavefunction where the probability of finding an electron is zero along a particular direction. It represents a surface that divides the orbital into two regions of opposite phases. The number of nodal planes is determined by the angular quantum numbers (l and m) of the orbital. For example, the 2s orbital has no nodal planes, while the 2p orbital has one nodal plane (the xz or yz plane).

Radial nodes arise from the radial part of the wavefunction because they depend on the distance from the nucleus. The radial part determines the distribution of the electron density as a function of distance, and the nodes correspond to regions where the density drops to zero.

On the other hand, nodal planes arise from the angular part of the wavefunction because they depend on the orientation and shape of the orbital. The angular part describes the angular distribution of the electron density around the nucleus, and the nodal planes correspond to regions where the phase of the wavefunction changes sign.

In summary, radial nodes are related to the distance from the nucleus and arise from the radial part of the wavefunction, while nodal planes are related to the orientation and shape of the orbital and arise from the angular part of the wavefunction. The 2s orbital has one radial node and no nodal planes, while the 2p orbital has no radial nodes and one nodal plane.

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Answer:

6.2192 meters

Explanation:

5.98cm × 104cm= 621.92cm

100 cm makes 1 meter therefore

621.92 ÷100= 6.2192m

To determine the direction of heat flow in each scenario, we need to consider the temperature difference between the objects involved.

Heat always flows from an object at a higher temperature to an object at a lower temperature until thermal equilibrium is reached.

1. A glass of ice water:

In this scenario, the glass of ice water consists of two components: the ice and the water. The ice has a temperature below 0°C (32°F), while the water is at or slightly above 0°C (32°F). The surroundings, including the air and the glass, are generally at a higher temperature than the ice.

Heat flow: The heat flows from the surroundings (air and glass) to the ice and water to increase their temperature and melt the ice. Therefore, heat flows into the glass of ice water.

2. Ice cube to tap water:

In this scenario, the ice cube is at a temperature below 0°C (32°F), while the tap water is typically at room temperature or slightly higher.

Heat flow: The heat flows from the tap water to the ice cube because the tap water has a higher temperature than the ice cube. The heat from the water raises the temperature of the ice cube, causing it to melt. Therefore, heat flows into the ice cube from the tap water.

3. Tap water to ice cube:

In this scenario, the tap water is at room temperature or slightly higher, while the ice cube is at a temperature below 0°C (32°F).

Heat flow: The heat flows from the ice cube to the tap water because the tap water has a lower temperature than the ice cube. The heat from the ice cube lowers the temperature of the tap water, causing it to cool down. Therefore, heat flows out of the ice cube to the tap water.

In summary:

- In a glass of ice water, heat flows into the glass of ice water.

- In the interaction between an ice cube and tap water, heat flows from the tap water to the ice cube.

- In the interaction between tap water and an ice cube, heat flows from the ice cube to the tap water.

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The solution with the highest concentration of potassium ion would be option C) 0.15 M K3PO4.

This is because K3PO4 contains three moles of potassium ions per mole of compound, while KCl and K2CrO4 contain only one mole of potassium ion per mole of compound. Therefore, the concentration of potassium ion is highest in K3PO4.

Potassium particle (K+) is maybe the most often enhanced electrolyte. 37. Potassium assumes a significant part in cell layer physiology, particularly in keeping up with resting film potential and in producing activity possibilities in the sensory system and heart.

Potassium can be obtained both naturally and through supplementation. Its primary job in the body is to assist with keeping up with typical degrees of liquid inside our cells. Its opposite, sodium, keeps the fluid levels outside of cells normal. Potassium additionally assists muscles with contracting and supports typical b.

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Answer:

C. It represents the heat involved in a reaction

Explanation: It would make sense since most of the time h in chemistry  

is the equivalent to heat.  

I hope this helped you!

Answer:

3.2 MJ or 3200KJ or 3200000J

Explanation:

To calculate the Kinetic energy, we use the following formula:

\( \alpha ke \: = \frac{1}{2} m {v}^{2} \)

Where, ∆KE = change in kinetic energy

m = mass

v = velocity

From our question, we have

m = 16000 kg

v = 20 m/s

Substitute the values into the equation gives,

\(ke \: = \: \frac{1}{2} \: \times \: 16000 \: \times \: {20}^{2} \\ = 3200000 \: joules\)

Therefore, the Kinetic energy of the car

∆KE = 3200000 J = 3200 KJ = 3.2 MJ

And we have the solution to our problem.

Answer:

1.006 * 103

Explanation:

Add the number between 1 and 9 and add a decimal accordingly . so the answer is 1.006 multiplied by 10 raised to power 3

Therefore, the volume of O2 needed at 298K and 1 atm is approximately 77 liters.

The balanced chemical equation for the combustion of ethane is shown below:

7O2 + 2C2H6 → 4CO2 + 6H2O

We can use the stoichiometry of the reaction to find out how much O2 is needed to completely react with 2 moles of C2H6.

2 moles of C2H6 requires 7 moles of O2.10 L of C2H6 will contain (10/22.4) x 2 moles of C2H6 = 0.892 mole C2H6.

So the amount of O2 needed will be: (7/2) x 0.892 mole C2H6 = 3.118 moles O2.

Since the gases behave ideally, we can use the ideal gas law to find the volume of O2 at 298K and 1 atm.

PV = nRTV = nRT/PV = (3.118 mol) (0.08206 L atm K-1 mol-1) (298 K) / (1 atm)V = 77.02 L ≈ 77 L

Therefore, the volume of O2 needed at 298K and 1 atm is approximately 77 liters.

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Answer:It’s helps use take in fresh air and conduct it to carbon

dioxide.

Explanation:Our respiratory system not only helps us turn air to Co2 the frest air also helps refresh our blood when it passes through our heart.

The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. When we breathe, we inhale oxygen and exhale carbon dioxide. This exchange of gases is the respiratory system's means of getting oxygen to the blood. The respiratory system also helps to regulate the acid-base level in the blood. lastly, the respiratory system allows us to vocalize by the movement of exhaled air through the larynx.

brings oxygen into the body

Answer:

The central and most important part of an object, movement, or group, forming the basis for its activity and growth.

Explanation:

hope this helps!

Answer:

atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom. definition for science.

Explanation:

important part of an object, movement, or group

Answer:

D)

Explanation:

CH4 + 2O2 = CO2 + 2H2O

1 (L CO2)= 32.5(L CO2)

1 (CH4) = 32.5 (L CH4)

A, B, and C take the least amount of energy to disassemble from least to greatest amount.

There are lots of molecules in matter. Most of the oceans and atmosphere are also made up of them. The majority of organic compounds are molecules. Molecules such as proteins, the amino acids that make them up, nucleic acids (DNA and RNA), sugars, carbohydrates, lipids, and vitamins are examples of the constituents of life.

The following are listed in order of how much energy each one needs to break the carbon-carbon bond:

A. C2H2: C = H

B. C₂H4: H

H/

C=C

C. C₂H6: H H

H

H-C-C-H

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Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

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The partial pressures of NO2, O2, and N2 can be found by multiplying the total pressure by the mole fraction of each gas component. The partial pressures of NO2, O2, and N2 are 0.60 atm, 0.66 atm, and 0.74 atm, respectively

Mole fraction is a unitless quantity used to express the ratio of the number of moles of a particular substance to the total number of moles in a mixture. It is defined as the ratio of the number of moles of a component in a mixture to the total number of moles of all components in the mixture. The mole fraction of a component can range from 0 to 1, and the sum of the mole fractions of all components in a mixture is always equal to 1.

First, we need to calculate the mole fractions of each gas component:
The mole fraction of NO2 = 0.300 (given)
The mole fraction of O2 = 0.330 (given)
The mole fraction of N2 = 0.368 (given)
The mole fraction of trace gases = 0.002 (calculated as 1 - sum of other mole fractions)
Next, we can calculate the partial pressures of each gas component:
The partial pressure of NO2 = 2.00 atm x 0.300 = 0.60 atm
The partial pressure of O2 = 2.00 atm x 0.330 = 0.66 atm
The partial pressure of N2 = 2.00 atm x 0.368 = 0.74 atm
Therefore, the partial pressures of NO2, O2, and N2 are 0.60 atm, 0.66 atm, and 0.74 atm, respectively.

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Answer:

B) They will react because X and Y can share two pairs of electrons to become stable

Explanation:

The electron configurations of two elements x and y are given :

X: 1s2 2s2 2p6

Y: 1s2 2s2 2p6 3s2 3p6

The statement that is true for both the elements is that, they both will react as they both can share two pairs of electrons to become stable.

To become stable the outermost shell or p orbital should have 8 electrons, so element X  can gain 2 atoms to become stable.

Element Y can also react as it can also share two atoms to fulfill its 3p orbital and will stable.

Hence, the correct option is "B".

The correct answer is c. proximal tubule: site of secretion of organic anions and cations.

The proximal tubule is a crucial part of the nephron, which is the functional unit of the kidney. It is responsible for the reabsorption of important solutes and water from the filtrate, as well as the secretion of organic anions and cations. The secretion of these substances is essential for maintaining proper electrolyte balance and eliminating waste products from the body.

The other options provided are not accurately matched with their functions. The ascending limb of the loop of Henle primarily functions in the reabsorption of sodium and chloride ions, not the secretion of potassium (K+). The descending limb of the loop of Henle is involved in the passive reabsorption of water, rather than the transport of solutes. Lastly, the distal tubule plays a role in the fine-tuning of electrolyte balance and regulation of acid-base balance, but the main site of reabsorption of calcium (Ca2+) and magnesium (Mg2+) occurs in the thick ascending limb of the loop of Henle, not the distal tubule.

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Citrulline has structural similarity to arginine among the 20 amino acids that make up proteins.

Citrulline, an amino acid, has structural similarity to arginine among the 20 amino acids that make up proteins. Citrulline and arginine share similar chemical structures and contain a guanidino group. Citrulline is a non-standard amino acid, meaning it is not directly encoded by the genetic code and is typically produced in the urea cycle in the body. Structurally, citrulline differs from arginine by the absence of a terminal guanidino group, as it has been deaminated.

However, citrulline can be converted back to arginine through enzymatic reactions. Functionally, citrulline plays a role in the urea cycle and is involved in the synthesis of nitric oxide. Arginine, on the other hand, is essential for protein synthesis and is a precursor for the production of various molecules, including nitric oxide, creatine, and polyamines. Despite their structural similarity, citrulline and arginine have distinct roles and functions in biological systems.

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Answer:

covalen and ionic compound

During the electrolysis process, a direct electric current is passed through the Cr3+ solution. This causes the Cr3+ ions to gain three electrons and form solid metallic chromium on the surface of the iron hubcap.

Now, let's move on to the second part of your question. The iron hubcap would serve as either the anode or the cathode during the electrolysis process. To determine which electrode it is, we need to consider the half-reaction.Since the Cr3+ ions are gaining electrons and being reduced to form metallic chromium, we can conclude that the iron hubcap is acting as the cathode.

In summary: The half-reaction that takes place to plate the hubcap with metallic chromium is: Cr3+ (aq) + 3e- → Cr(s The iron hubcap serves as the cathode during the electrolysis process.

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As soon as you can, thoroughly rinse the afflicted area with clean water to get rid of any remaining chemicals.

Use the nearest downpour wash or hand/spray unit to fully wash (15 minutes). Eliminate any clothes that may be covering the skin and retaining the chemical, preventing full skin cleansing. Additional medical care can be needed depending on the chemical. As soon as you can, thoroughly rinse the afflicted area with clean water to get rid of any remaining chemicals. Make an effort to prevent water from gathering on the skin or running off the afflicted region, which might transfer the toxin to more of the body. Do not massage or wipe the area; just use water.

Apply no ice. In addition to increasing pain and damage, it can drop body temperature. Breaking blisters or applying butter or ointments might result in infection.

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The first stage of a lunar eclipse:

Penumbral eclipse.

There are 7 stages of a total lunar eclipse. The first one is when the Penumbral eclipse begins. his begins when the penumbral part of Earth's shadow starts moving over the Moon. This phase is usually not feasible to be seen with the naked eye.

Answer:

Think about where you're located on the globe. That'll tell you your answer

Explanation:

Answer: alpha radiation, uranium, radium, radon, polonium,

Explanation:

10 radioactive substances are:

One can tell that a reaction is taking place by the emission of smoke.

A reaction takes place when a new substance or substances are formed from one or a combination of more than one substance.

The initial substances are called reactants while the new substances formed are called products.

In the image, the burning of the magnesium results in the production of smoke. Thus, a new substance is being formed in the form of smoke.

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