George has several plants in his garden once in a while he adds fertilizer to the soil then leaves absorb the nutrients in the fertilizer and you look healthy if a cell is compared to a plant which organelle helps transport fertilizer from the soil to leaf?
A. lysosome
B. mitochondrion
C. vacuole
D. vesicle​

Answer:

Anaerobic respiration is the type of respiration through which cells can break down sugars to generate energy when oxygen isnt there

Explanation:

hope this helps!

Anaerobic respiration occurs without oxygen and releases less energy but more quickly than aerobic respiration.

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The sensitivity of the drug can be determined by finding the derivative of the reaction function with respect to the dosage.

To find the sensitivity of the drug, we need to calculate the derivative of the reaction function R(x) with respect to x.

Taking the derivative of the given function R(x) = \(x^2(660 - x/3)\) involves applying the product rule and chain rule.

Differentiating R(x) with respect to x yields:

R'(x) = \(2x(660 - x/3) - x^2/3\)

Simplifying further:

R'(x) = \((1320x - x^2) / 3\)

This expression represents the rate of reaction with respect to the dosage, which indicates the sensitivity of the drug.

By evaluating R'(x) at different dosage values, we can determine how the rate of reaction changes with the dosage and infer the drug's sensitivity.

The sensitivity of a drug refers to how the rate of reaction, or response, changes in relation to the dosage administered.

In this case, the sensitivity can be quantified by calculating the derivative of the reaction function R(x) with respect to the dosage x.

By taking the derivative, we obtain R'(x), which represents the rate of change of the reaction with respect to the dosage.

Evaluating R'(x) at different dosage values allows us to determine the drug's sensitivity to dosage variations.

A higher magnitude of R'(x) indicates a greater sensitivity, as the rate of reaction changes more rapidly with dosage adjustments.

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Answer: The value of \(\Delta H\) is -163 kJZ

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

\(\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}\) ......(1)

We are given:

Given mass of water = 72.0 g

Molar mass of water = 18 g/mol

Putting values in equation 1, we get:

\(\text{Moles of water}=\frac{72.0g}{18g/mol}\\\\\text{Moles of water}=4mol\)

Calculating the heat released for the condensation process:

\(\Delta H=n\times \Delta H_{(vap)}\) ......(2)

where,

\(\Delta H\) = amount of heat released

n = number of moles of water = 4 moles

\(\Delta H_{(vap)}\) = specific heat of vaporization = -40.7 kJ/mol

Negative sign represents the amount of heat released.

Putting values in equation 2:

\(\Delta H=4mol\times (-40.7kJ/mol)=-163kJ\)

Hence, the value of \(\Delta H\) is -163 kJ

Answer:

Your ability to move and lift objects refers to muscular strength. It's measured by how much force you can exert for a short period of time and how much weight you can lift.

Explanation:

For each given acid we have to determine whether it is a strong acid or weak acid,

a. The acid "HNO₃" is a - Strong acid

b. The acid "HCl" is - Strong acid

c. The acid "HBr" is - Strong acid

d. The acid "H₂SO₄" is - Weak acid

(Expression for acid ionization constant: Ka = [H⁺][HSO⁴⁻]/[H₂SO₄])

In the given list of acids:

a. HNO₃ is a strong acid because it completely dissociates in water to produce H⁺ ions and NO³⁻ ions.

b. HCl is a strong acid because it fully dissociates in water to form H⁺ ions and Cl⁻ ions.

c. HBr is a strong acid as it ionizes completely in water to produce H⁺ ions and Br⁻ ions.

d. H₂SO₄ is a weak acid as it only partially dissociates in water, resulting in the presence of both undissociated H₂SO₄ molecules and H+ ions.
The expression for the acid ionization constant (Ka) is given as [H+][HSO⁴⁻ ]/[H2SO4], where [H⁺], [HSO⁴⁻], and [H₂SO₄] represent the concentrations of the respective species in the equilibrium equation.

The classification of acids as strong or weak depends on their ability to ionize in water.

Strong acids fully dissociate, producing a high concentration of H+ ions, while weak acids only partially dissociate, resulting in a lower concentration of H+ ions.

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Lightning protection systems utilize materials, including copper-clad steel, solid copper, and stainless steel, chosen for their specific properties and characteristics making them lightning protection apps.

Lightning protection systems are designed to safeguard structures and people from the destructive forces of lightning strikes. The materials used in these systems play a crucial role in dissipating and redirecting the electrical energy of lightning safely. Copper-clad steel is a popular choice for lightning rods and conductors due to its combination of strength and conductivity.

The steel core provides mechanical strength, while the copper coating ensures excellent electrical conductivity. Solid copper is another common material used in lightning protection systems. Copper has exceptional electrical conductivity and is highly resistant to corrosion, making it an ideal choice for applications where longevity and conductivity are vital. Additionally, stainless steel, known for its durability and corrosion resistance, is utilized in lightning protection systems, particularly for grounding components and structural connections.

By using these materials strategically within lightning protection systems, the risk of damage from lightning strikes can be minimized by providing effective paths for lightning current to safely follow, reducing the potential for destructive electrical surges.

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Answer:

Explanation:

The process is photosynthesis as plants need carbon dioxide and humans need oxygen so plants release oxygen which humans breath/take in and plant/trees take in carbon dioxide which humans release.

The natural process which removes  carbon dioxide from the atmosphere is photosynthesis.

It is defined as a process by which plants and other photosynthetic organisms convert the light energy in to chemical energy  through the process of cellular respiration.

Some of the energy which is converted  is stored in molecules of carbohydrates like sugar and starches  which are made up of from carbon dioxide and water . Photosynthetic organisms which can perform photosynthesis  are algae and cyanobacteria. Photosynthesis is largely responsible for producing and maintaining the content of oxygen in earth's atmosphere.

The process begins with proteins absorbing light energy  which are called reaction centers and contain a green pigment which is called chlorophyll . In plants ,these pigments are present inside organelles called chloroplasts while in bacteria they are present in plasma membrane.

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The concentration of [H3O+] in the solution is approximately 3.16 x 10^(-5) mol/L or M (molar)

The pH of a solution is the degree of measurement of hydronium ions, [H3O+], in the solution. The pH scale is logarithmic, hence the formula applicable here is:

pH = -log[H3O+]

To find the concentration of [H3O+], we have:

[H3O+] = 10^(-pH)

Substituting the given pH value of 4.52 into the equation, we are able to calculate the concentration of hydronium ions:

[H3O+] = 10^(-4.52)

[H3O+] ≈ 3.16 x 10^(-5) mol/L

Therefore, the concentration of [H3O+] ions in the solution is about 3.16x 10^(-5) mol/L or M (molar).

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There are 0.067 moles and 36.03 grams of carbon present in 12.16 g of aspirin.

mass of aspirin, C3H804 = 12.16 g

Now, we have to calculate the number of moles and grams of carbon present in this aspirin. Calculating number of moles of C3H804

Number of moles = mass of the substance / molar mass of the substance

The molar mass of C3H804= (3 x atomic mass of C) + (8 x atomic mass of H) + (4 x atomic mass of O)

The atomic mass of carbon (C) is 12.01 g.

The atomic mass of hydrogen (H) is 1.008 g.

The atomic mass of oxygen (O) is 16 g.

So, molar mass of C3H804 = (3 x 12.01 g) + (8 x 1.008 g) + (4 x 16 g)= 180.16 g/mol

So, number of moles of aspirin C3H804 = 12.16 g / 180.16 g/mol= 0.067 moles of aspirin

Calculating grams of carbon in C3H804.

As per the molecular formula of aspirin, C3H804 contains three atoms of carbon. The molar mass of carbon (C) is 12.01 g. So, mass of carbon in C3H804 = 3 x 12.01 g= 36.03 g.

Therefore, there are 0.067 moles and 36.03 grams of carbon present in 12.16 g of aspirin, C3H804.

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The molar concentration of Al(OH)₃ in the solution is 1.61 M.

we need to calculate the number of moles of Al(OH)3 in the solution:

Number of moles of Al(OH)₃ = mass of Al(OH)3 / molar mass of Al(OH)3

Molar mass of Al(OH)₃ = (1 x atomic mass of Al) + (3 x atomic mass of O) + (3 x atomic mass of H)

Molar mass of Al(OH)₃ = (1 x 26.98 g/mol) + (3 x 16.00 g/mol) + (3 x 1.01 g/mol) = 78.00 g/mol

Number of moles of Al(OH)₃ = 62.7 g / 78.00 g/mol = 0.804 moles

Next, we need to calculate the volume of the solution in liters:

Volume of solution = 500.0 mL = 500.0 mL x (1 L/1000 mL) = 0.500 L

Finally, we can calculate the molar concentration of Al(OH)₃

Molarity = moles of solute/volume of solution in liters

Molarity = 0.804 moles / 0.500 L = 1.61 M

Therefore, the molar concentration of Al(OH)₃ in the solution is 1.61 M.

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Answer: same concentration

Explanation:

H+ makes it more acidic, OH- makes is more basic. 7 is neutral so it has the same amount of both.

The acceleration of the tornado is obtained as 3 miles/hr^2.

We know that we can be able to obtain the acceleration by looking at the equations of motion. Let us note that using the equations of motion as we have it we should consider the use of the equation;

v = u + at

v = final velocity

u = initial velocity

t = time taken

a = acceleration

Where we have;

t = 5 hours

v = 25 miles/hour

u =  10 miles/hour

Then;

a = v - u/t

a = 25 - 10/5

= 3 miles/hr^2

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Answer:

Acidic

Explanation:

the pH scale ranges from 0 to 14, where 7 means the substance is neutral. Less than 7 means the substance is Acidic. Greater than 7 means the substance is Basic.

Remember that the lower the pH is, the more Acidic the substance is. In this case lemon juice is Acidic.

Therefore, the mechanical energy of an object is proportional to its mass, its height, or its vertical position.

Mechanical energy depends on the position and motion of an object, and its force is the sum of its moving energy and its stored energy. That is, mechanical energy is produced when the potential energy of an object combines with its kinetic energy. The kinetic energy of a moving object is directly proportional to its mass, which is directly proportional to the square of its velocity.

This means that an object with twice the mass and the same velocity has twice the kinetic energy, and an object with the same mass and twice the velocity has four times the kinetic energy. Mechanical energy is defined as the ability of a body to do work. The amount of work an object can do depends on two things position and movement. Before delving further into mechanical energy we need to understand more about how the position and motion of an object affect its energy.

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Citric acid is added to food to add tartness and enhance the flavor. The correct option is b.

Citric acid, a natural compound found in citrus fruits, is commonly added to food for its tart flavor and ability to enhance taste. Here's a step-by-step explanation:

1. Tartness: Citric acid is highly acidic and has a sour taste. When added to food, it provides a sharp, tangy flavor that adds tartness. This tartness can help balance the overall taste profile of a dish, especially in sweet or savory recipes.

2. Flavor enhancement: Citric acid acts as a flavor enhancer, intensifying the existing flavors in food. It has the ability to enhance the perception of other taste sensations, such as sweetness and saltiness, making food taste more vibrant and flavorful.

3. Preservation: Citric acid also acts as a natural preservative in some food products. It has antimicrobial properties that inhibit the growth of certain bacteria and fungi, helping to extend the shelf life of foods and prevent spoilage.

4. pH adjustment: Citric acid can be used to adjust the pH level of certain food products. It is commonly used in canning and preserving processes to create an acidic environment that inhibits bacterial growth and helps maintain product quality and safety.

Overall, the addition of citric acid to food primarily serves to enhance flavor, provide tartness, and potentially contribute to preservation. Option b is the correct one.

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The molecular formulas of maleic and fumaric acids are identical, but fumaric acid is a trans isomer while maleic acid is a cis isomer. The two acids have different physical properties even though they have the same molecular structure.

The melting point of fumaric acid is higher than that of maleic acid. In this case, polarity is much less critical than intermolecular hydrogen bonding in determining the relative stability of the crystal lattice and, consequently, the melting temperature of both acids. The carboxyl groups in fumaric acid can hydrogen bond with their neighbors, whereas the carboxyl groups in maleic acid form an intramolecular hydrogen bond. It requires more effort to break the bonds in the trans isomer than in the cis isomer because of the efficient packing structure of fumaric acid. Since fumaric acid has strong intermolecular forces, its melting point is higher.

The cis configuration, dipole-dipole interaction, and hydrogen bonding of the molecule make maleic acid polar, which makes it soluble in water. Because water is also polar, it can dissolve quickly in it. Fumaric acid is a non-polar molecule, but is not very soluble in water, despite the instantaneous induced dipole that the London Dispersion forces have for the molecule.

After losing the H⁺ ion, malic acid's cis isomer can create intramolecular H bonds, which makes the conjugate base more stable than the trans form (Fumaric acid).

Maleic acid has a higher tendency to lose H⁺ than fumaric acid because intramolecular H-bonding stabilizes the conjugate base by H-bonding, as shown in the first and second figures of the image given below:

Because maleic acid contains intramolecular H-bonding, fumaric acid has a lower pKa₂ than maleic acid when the second H is taken out.

As the acidity rises, the value falls because pKa is the negative logarithm of Ka. Maleic acid has a higher initial dissociation constant than fumaric acid as a result of stable conjugate base synthesis, which increases the former's acidity. Due to the structures of the singly dissociated ions, fumaric acid undergoes the second dissociation more quickly. Fumaric acid is a simple two distinct carboxylate group that dissociates relatively separately.

Maleic acid, on the other hand, only undergoes one dissociation to form a more robust resonant ring structure. The remaining hydrogen can now alternately bond to the oxygen in positions 2 and 3 to form an alternating 3 Center bond because it is a 1,4 dicarbonyl with an alkene between those two positions. The alternating 3 Center bond creates a seven-part aromatic ring because an alkene is located next to it. The conjugate base of maleic acid is stabilized and has fewer acidity thanks to aromatic rings. Look at the image below, specifically the third number figure.

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Sodium-potassium pumps actively transport sodium ions out of the cell and potassium ions into the cell, maintaining appropriate ion concentrations after nerve impulses.

Sodium-potassium pumps play a crucial role in maintaining appropriate ion concentrations, especially after nerve impulses that involve ion diffusion. These pumps are specialized proteins found in the cell membrane of neurons and other cells. They work by actively transporting sodium ions (Na+) out of the cell and potassium ions (K+) into the cell, against their concentration gradients. This process requires energy in the form of adenosine triphosphate (ATP).

When a nerve impulse occurs, there is a rapid exchange of sodium and potassium ions across the cell membrane, leading to temporary imbalances in ion concentrations. Sodium ions rush into the cell, while potassium ions move out. This movement generates an electrical signal that allows the nerve impulse to travel along the neuron. However, these rapid changes in ion concentrations need to be restored to their original levels quickly for the neuron to function properly.

This is where sodium-potassium pumps come into play. They actively transport sodium ions out of the cell, helping to restore the initial balance. Additionally, these pumps bring potassium ions back into the cell, replenishing the potassium that was lost during the nerve impulse. By constantly maintaining the appropriate ion concentrations, sodium-potassium pumps ensure the proper functioning of neurons and support various physiological processes, including nerve signaling and muscle contraction.

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Answer: 581 Sn and 13 Sn

Explanation:

581 Sn and 13 Sn are both Sn which are the same element with different masses. Isotopes are same element with different masses and the elements can have different masses because of different number of neurons

Answer:

3,6,6...................................

The nuclear fission of U-235 is a process of radioactive decay in which the heavy nucleus of Uranium-235 which absorbs a neutron first and then it ultimately converts into a an unstable nucleus of Uranium-236 which eventually bifurcates into the lighter elements and additional neutrons.

One of the fissile isotopes that undergo an important and crucial nuclear fission reactions is U-235 which in turn forms a chain reaction. A nuclear fission can be defined as a process of radioactive decay where a heavier nucleus splits further into the two or more lighter elements by absorbing a neutron and releasing its multiples along with great amount of energy.

Taking up the example of Uranium-235, when it's bombarded with small neutrons, the nucleus of U-235 absorbs one of them and turns to heavier U-236 which remains unstable for an infinitesimal time. This U-236, undergoes a phase where fission occurs and it releases three neutrons and produce Kr-92 and Ba-141 along with enormous amount of energy and gamma rays.

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Answer:

HNO3 ->NO3²- + H+

Concentration of H+ ions= 0.0032M

pH = - log[ H+]

= - log (0.0032)

= 2.49

pH + pOH = 14

pOH = 14 - pH

= 14 - 2.49

= 11.51

pH = 2.49 and pOH = 11.51

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Answer:

The wavelength decreases

Explanation:

As you go along the EM spectrum from radio waves to gamma rays, the wavelength decreases as the wave's energy and frequency increase.

Answer:

A Bacteria

Explanation:

Explanation:

In gases the particles move rapidly in all directions, frequently colliding with each other and the side of the container. With an increase in temperature, the particles gain kinetic energy and move faster.

Both small and large stars can increase in size when core hydrogen is used up. However, only large stars may turn into a black hole at the end of their life.

Both small and large stars can increase in size when core hydrogen is used up. However, only large stars may turn into a black hole at the end of their life. Small stars, on the other hand, become a white dwarf when fusion ends. Large stars, after the supernova phase, become a neutron star. Both small and large stars are capable of fusing hydrogen for billions or trillions of years, which is what powers them throughout their life. These stars have different life cycles and outcomes based on their size, mass, and other factors. Understanding the lives of stars, including both small and large stars, can help us understand the universe we live in and the processes that drive it.

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