A hyperpolarizing graded potential can be caused by {{c1::a K+ channel opening}}

Answer:

carbon and hydrogen are elements and methane is a compound.

Explanation:

bc

Answer:

sorry I don't know how can do this for me

Answer:

The main cause of global convection currents is the uneven heating of the earth by the sun. Hope this helped! :)

The main cause of global convection current is differential heating, that is the temperature difference in different levels of  atmosphere.

Convection current  is the heat transfer by fluid movement in the earth crust between different temperature regions. The density of fluids differs due to the temperature gradients and thus heated fluids raises and cooled fluid sinks.

The heated fluid movement causes the movement of plates of earth. The molten rock deep inside the earth crust circulates by the convection current.

Hence, the main cause of global convection current is the differential heating of the atmosphere.

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The major air pollutant sulfur oxide is removed from the flue gas by limestone, which is mixed with coal during the fluidized bed combustion process.

In fluidized-bed combustion of coal, limestone is mixed with coal to remove the major air pollutant sulfur oxides.

What is fluidized bed combustion?

Fluidized bed combustion (FBC) is a process that burns solid fuel in the presence of a fluidized air stream. This combustion method is similar to circulating fluidized bed combustion (CFBC).

A bed of solid particles is maintained in a state of suspension and turbulence by an upward velocity of the fluid, typically air or an air and fuel mixture. Coal, biomass, and waste products are the most common fuels used in fluidized bed combustion.

What is the purpose of limestone in fluidized bed combustion?

The flue gas from fluidized bed combustion contains major air pollutants such as sulfur oxides (SOx), nitrogen oxides (NOx), and carbon dioxide (CO2). The use of limestone, a calcium-rich mineral, in fluidized bed combustion technology aids in the removal of sulfur oxides (SOx).

Limestone is used as a reagent, which reacts with the sulfur in the coal to form calcium sulfate. It is then captured and eliminated as a solid by the combustion process.

Therefore, the major air pollutant sulfur oxide is removed from the flue gas by limestone, which is mixed with coal during the fluidized bed combustion process.

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To determine the precipitate formed when an aqueous solution of cesium acetate (CsCH3COO) reacts with an aqueous solution of cadmium chlorate (Cd(ClO3)2),

We need to identify the possible insoluble compounds that can form.

First, let's write the balanced chemical equation for the reaction:

2CsCH3COO(aq) + Cd(ClO3)2(aq) → ???

To identify the possible precipitate, we need to examine the solubility rules for common ionic compounds.

The solubility rules indicate that most acetates (CH3COO-) are soluble, and chlorates (ClO3-) are also generally soluble.

However, there are exceptions for certain metal ions, including cadmium (Cd2+). Cadmium acetate (Cd(CH3COO)2) is an example of a sparingly soluble salt. It has limited solubility in water.

Considering the solubility rules and the presence of cadmium acetate, it's reasonable to assume that a precipitate of cadmium acetate (Cd(CH3COO)2) would form in this reaction:

2CsCH3COO(aq) + Cd(ClO3)2(aq) → 2CsClO3(aq) + Cd(CH3COO)2(s)

Therefore, the precipitate formed in this reaction is cadmium acetate (Cd(CH3COO)2).

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Answer:

Transpiration

Then condensation

Then precipitation

and etc.

Answer: The water cycle?

Explanation: I hope this answer your question- Lily ^-^

Answer:

acids can dissolve grease but not oil

Explanation:

Most acids do not dissolve oil because the two types of substances differ chemically. When mixed, the two form two separate layers as water and oil does. 

Muriatic acid, gasoline work to remove grease. Sulfuric acid can liquefy grease.

Answer:

84%

Explanation:

Fossil Fuels Supply 84 Percent Of Worlds Electricity

Explanation:

We have a 63.9 g sample of calcium hydroxide. First we have to convert those grams into moles. To do that we have to use the molar mass of calcium hydroxide.

Calcium hydroxide = Ca(OH)₂

molar mass of Ca = 40.08 g/mol

molar mass of O = 16.00 g/mol

molar mass of H = 1.01 g/mol

molar mass of Ca(OH)₂ = 1 * 40.08 g/mol + 2 * 16.00 g/mol + 2 * 1.01 g/mol

molar mass of Ca(OH)₂ = 74.10 g/mol

mass of Ca(OH)₂ = 63.9 g

moles of Ca(OH)₂ = 63.9 g /(74.10 g/mol)

moles of Ca(OH)₂ = 0.862 moles

In 1 molecule of Ca we have 2 atoms of O. So in 1 mol of Ca(OH)₂ we will have 2 moles of O atoms.

1 mol of Ca(OH)₂ = 2 moles of O atoms

moles of O atoms = 0.862 moles of Ca(OH)₂ * 2 moles of O /1 mol of Ca(OH)₂

moles of O atoms = 1.724 moles

One mol is similar to a dozen. When we say that we need a dozen eggs we know that we need 12 eggs. If we want a mol of eggs, we want 6.022*10^23 eggs. So one mol of something is 6.022 * 10^23 of that.

1 mol of O atoms = 6.022 * 10^23 atoms

n° of O atoms = 1.724 moles * 6.022 * 10^23 atoms/1 mol

n° of O atoms = 1.04 * 10^24 atoms

Answer: In a 63.9 g sample of Ca(OH)₂ we have 1.04 *10^24 atoms of oxygen.

The dilution factor of the unknown sample is 10. The dilution factor of a solution refers to the ratio of the final volume of the now diluted solution to the initial volume of the of the initial concentrated solution.

Mathematically;

The dilution factor is given by the formula;

Dilution factor = Final volume of the now diluted solution/ Initial volume of more concentrated solution

Final volume of the now diluted solution = 100.0 ml

Initial volume of more concentrated solution = 10.00 ml

Dilution factor = 100.0 ml/10.00 ml

Dilution factor =  10

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Color is an unreliable property for identifying minerals for three primary reasons: variability, impurities, and weathering.

1. Variability: Many minerals can exhibit a range of colors, even within the same sample, due to varying chemical compositions and crystal structures. For example, quartz can appear in various colors such as clear, purple (amethyst), yellow (citrine), and pink (rose quartz). This makes it difficult to accurately identify minerals based solely on color.

2. Impurities: The presence of trace elements or impurities in a mineral's structure can alter its color, making it look similar to other minerals with different compositions. For instance, the mineral corundum, when pure, is colorless, but the presence of trace amounts of iron or chromium can cause it to appear blue (sapphire) or red (ruby). These impurities can lead to misidentification of a mineral based on color alone.

3. Weathering: Over time, exposure to environmental factors such as air, water, and temperature can cause a mineral's surface to change color. This alteration, called weathering, can make it challenging to identify the original mineral by its current color. For example, a fresh surface of copper minerals may appear green due to oxidation, making it difficult to distinguish from other green minerals.

In conclusion, color is an unreliable property for identifying minerals due to its variability, the influence of impurities, and the effects of weathering. It's essential to consider other properties like crystal structure, hardness, and cleavage when identifying minerals for more accurate results.

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Answer:

it produce atp

Explanation:

.............

Cellular respiration is a metabolic process that occurs in the cells of an organism. Carbon dioxide from cellular respiration aids the process of photosynthesis.

Cellular respiration is a process that takes place in the organism's cell where the cellular oxygen or chemical energy gets utilized and converted to ATP and waste like carbon dioxide.

The carbon dioxide released by the organism in the atmosphere is used by plants in the process of photosynthesis. Photosynthesis is a process that utilizes carbon and water to form glucose and oxygen.

Therefore, cellular respiration supports the process of photosynthesis by option D. producing carbon dioxide.

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Esters are the moderate deactivating group having substitution at meta position.

An ester is defined as a compound derived from an acid in which the hydrogen atom of at least one acidic hydroxyl group of that acid is replaced by an organyl group. It is derived from oxygen replaced by other chalcogens belong to the ester category as well Esters function as moderate deactivating groups and will direct substitution at meta positions. The first nitro group will be directed to the position meta to the ester group. This group is a severe deactivating group and will also direct substitution to the meta positions. The second nitro group will be directed to the position meta to both the ester group and the nitro group.

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Answer:

pls pls pls pls help me out i say the answer but i need some brainless plss

3.24 is the pH of this monoprotic weak acid.

Let's assume monoprotic weak acid be AB

AB ⇄ A⁺ + B⁻

Formula used for Kₐ

Kₐ = [A⁺] [B⁻]/ [AB]

We can assume that the equilibrium concentrations utilized in the expression are a fair enough approximation to the original concentrations if Kₐ lies in the range 10⁻⁴ - 10⁻¹⁰.

This is relevant here.

Rearranging and taking both sides' negative logs results in:

pH = 1/2 log [pKₐ - logx]

where x represents the concentration of weak monoprotic acid.

pKₐ = -log Kₐ

Given

Kₐ = 2×10⁻⁶

So, pKₐ = - log(2×10⁻⁶)  = 5.69

x = 0.16 M

Putting these values into the formula

pH = 1/2 [5.69 - ( -0.795)]

     = 1/2 [5.69 + 0.795]

     = 1/2[6.485]

     = 3.24

Hence, 3.24 is the pH of this monoprotic weak acid.

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When there is competition between the inductive effect and resonance effect, the resonance effect is generally more dominant in determining the electronic properties of a molecule.

This is because resonance allows for the delocalization of electrons, resulting in more stable molecules and enhanced reactivity.

The resonance effect is a chemical phenomenon in which electrons are delocalized through a system of adjacent atoms with conjugated pi bonds. This delocalization leads to the stabilization of the molecule, which can affect its reactivity and electronic properties. The resonance effect is typically observed in organic molecules with alternating double and single bonds, or in molecules with adjacent atoms with lone pairs. The delocalization of electrons through resonance can lead to a variety of interesting effects, including increased acidity or basicity, altered reactivity patterns, and changes in molecular orbital energies. The resonance effect is an important concept in many areas of chemistry, including organic synthesis, biochemistry, and materials science, and is often used to explain and predict the behavior of complex molecules.

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Answer:

2

Explanation:i did the test

Answer:  16700 mmHg , 22,0 atm

Explanation:   1 torr  = 1 mmHg, so p = 16700 torr = 16700 mmHg

1 atm = 101325 Pa = 760 torr

16700 torr / 760 = 21,97 atm

The correct reasons for the observation is:

For cations, the measured potential increases by a factor of n x 59.16 mV for every 10-fold change in the activity of the cation, where n is the charge on the cation; option I

For anions, the measured potential decreases by a factor of 59.16 mV/n for every 10-fold change in the activity of the anion, where n is the charge on the anion; option IV

Cations are positively charged. They are formed when metals lose one or more electrons. The charge on the cations gives the number of electrons the metal ion has lost to form the ion. Hence, a cation with a charge of +2 has lost two electrons.

Anions are negatively charged. They are formed when non-metals gain one or more electrons. The charge on the anions gives the number of electrons the non-metal ion has gained to form the ion. Hence, an anion with a charge of -2 has gained two electrons.

Electrodes are materials through which current enters or leaves a cell.

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Complete question:

A Na ion-selective electrode increased in voltage by 59.16 mV when the sodium ion activity increased by a factor of 10. An S2 ion-selective electrode measured a decrease of 29.58 mV when the sulfide activity increased by a factor of 10. Why?

I. For cations, the measured potential increases by a factor of n x 59.16 mV for every 10-fold change in the activity of the cation, where n is the charge on the cation.

II. For anions, the measured potential decreases by a factor of n x 59.16 mV for every 10-fold change in the activity of the anion, where n is the charge on the anion.

III. For cations, the measured potential increases by a factor of 59.16 mV/n for every 10-fold

change in the activity of the cation, where n is the charge on the cation.

IV. For anions, the measured potential decreases by a factor of 59.16 mV/n for every 10-fold change in the activity of the anion, where n is the charge on the anion.

Select one:

a. I and IV

Ob. III and IV

c. II and III

d. I and II

e. None of the statements explains the behavior.

Answer:

30100000000000000000 atoms

Explanation:

Ar of Fe : 56

0.028/56 = 0.0005 moles of Fe

0.0005 * 6.02 * 10^23(Avagardro's law of constant)

= 3.01*10^20 atoms

Explanation:

There is a trend in the periodic table.

I.E increases up the group and across the period. So you know that metals have less I.E compared to non-metals.

Aqueous solutions have various uses because they participate in various processes, creating a wide variety of substances that tend to dissolve in water.

Blood is a good example of important aqueous solutions, because its solubility allows life to be sustained.

Blood is an aqueous solution made up of salts and proteins (plasma), in which erythrocytes or red blood cells, white blood cells or leukocytes are found, and the functions that these components fulfill are important for life.

Other examples of aqueous solutions:

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False. A prochiral center does not describe an sp_3 hybridized atom that can become a chirality center by changing one of its attached groups.

A prochiral center is an atom that possesses chirality, meaning it can become a chirality center by changing its stereochemistry. However, the statement in question is incorrect because a prochiral center does not require changing one of its attached groups to become a chirality center.

In contrast, a prochiral center is a type of stereocenter that exhibits chirality due to the presence of two different groups attached to it. It becomes a chirality center when one of the groups is replaced by another group, resulting in the formation of two distinct stereoisomers.

An example of a prochiral center is a carbon atom with three different groups attached to it. Upon substitution of one of the groups, the prochiral center becomes a chirality center, giving rise to enantiomers.

Therefore, the statement that a prochiral center can become a chirality center by changing one of its attached groups is false.

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The percent yield of carbon disulfide is 37.5% if the reaction of 43.7 g of carbon produces 34.8 g of carbon disulfide.

To calculate the percent yield of carbon disulfide (CS₂), we need to compare the actual yield of CS₂ obtained from the reaction to the theoretical yield that would be obtained if all of the carbon reacted to form CS₂. The percent yield is then calculated using the following formula;

Percent yield =(actual yield/theoretical yield) x 100%

First, we need to calculate the theoretical yield of CS₂ based on the amount of carbon used in the reaction. Balanced chemical equation for the reaction is;

C + 2S → CS₂

From this equation, we can see that the molar ratio between carbon and CS₂ is 1:1. Therefore, the number of moles of CS₂ that can be produced from 43.7 g of carbon is;

moles of CS₂ = moles of C = mass of C / molar mass of C

= 43.7 g / 12.01 g/mol

= 3.637 mol

Since the molar ratio between carbon and CS₂ is 1:1, the theoretical

yield of CS₂ would be 3.637 mol.

Next, we need to calculate the actual yield of CS₂ obtained from the reaction, which is given as 34.8 g.

Now we can use the formula above to calculate the percent yield;

Percent yield =(actual yield/theoretical yield) x 100%

= (34.8 g / (3.637 mol x 76.14 g/mol)) x 100%

= 37.5%

Therefore, the percent yield of CS₂ is 37.5%.

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Answer:

the surface may become etheir scratchy and soft and that the surface may also be come heated up due to friction

When a surface is experiencing friction with another surface, the surface may become either scratchy and soft and that the surface may also be come heated up due to friction.

When a surface is experiencing friction with another surface, the surface may become either scratchy and soft and that the surface may also be come heated up due to friction.

Projectile motion is a type of motion in which a object is thrown from the surface earth at some angle it will take projectile projection .

In above question a man thrown a object 14 m/sec an it will moves 2 meter.

Then

vsinθ×t−1/2×gt^2=25

where v = initial velocity in m/sec

t = time in sec

g = acceleration due to gravity

14sinθ×1−5×12=25

14sin=30

sin=30/14

sinθ>2 not possible

vsinθt−1/2×gt^2=2

14×sinθ−5=2

14xsinθ=7

Sinθ=7/14

Sinθ=1/2

θ=30 degree

Therefore, When a surface is experiencing friction with another surface, the surface may become either scratchy and soft and that the surface may also be come heated up due to friction.

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Answer:

I would go with the first option. It shows how people having been releasing more and more carbon dioxide into the atmosphere.

Explanation:

Answer:

The ability of water molecules to form hydrogen bonds with other molecules besides water is the universality of water as a solvent.

Explanation:

hope it helps you :)

The concentration of hydroxide ions is 0.001145 M and,  the ph given a concentration of aluminium is 3.9.

(Molar mass of 342.15 g/mol).

In order to answer this question, we must first convert our units. We are given 6.70 lb = 453.592 × 6.70 lb = 3039.0664 g of aluminium sulphate.

Water in 2050 gallons is equal to 2050 x 3.785 or 7759.25 litres.

Then, using the following formula, we will search for the Concentration of aluminium sulphate:

The formula for concentration is volume x moles.

Remember: 8.8823 moles is equal to 3039.0664 / 342.15 moles. 2050 gallons, or 7759.25 litres, make up the volume.

As a result, when we plug the values of the volume and number of moles into the previous equation (1), we get;

Concentration is equal to 8.8823 moles per 7759.25 litres, or 0.001145 M.

The solubility product equation, which is what we'll utilise next today, is as follows:

Ksp = (Al^3+) (OH^-)^3.

So, we have the ksp = 1.3 × 10^-33 and the value of (Al^3+)= 0.001145 M.

Hence, making (OH^-) the subject of the formula;

(OH^-) = ( 1.3 × 10^-33 / 0.001145)^1/3.

(OH^-) = 8 × 10^-11 M.

Hence, pOH = - log (OH^-)

pOH = - log (8 × 10^-11).

pOH = 10.1

Therefore, the value of pH is; 1

pH + pOH = 14.

pH = 14 - 10.1 = 3.9.

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Answer:

It is the temperature at which water is frozen or is pure ice

"Absolutely zero" temperature is the coldest temperature possible. It's so cold that everything stops moving and has no energy left. Scientists use a special scale called Kelvin to measure temperature, and absolute zero is at 0 Kelvin or -273.15 degrees Celsius (-459.67 degrees Fahrenheit). We can't actually reach absolute zero in real life, but scientists have come very close in laboratories using special cooling methods.