3. If E> 0, in which direction will the cell reac- tion proceed, and conversely if E< 0, in which direction the reaction would proceed?
5. State the limitations of the emf series and the advantages o

Answer:photosynthesis is a prosses of making food in plants.

The raw materials that are needed

are water carbondioxide,chlorophyl.

And the products are glucose for the plant and oxygen realesed to the atmosphere.

To find the pH of the solution, we need to first calculate the concentration of H+ ions in the solution using the dissociation constant (Ka) of hydrocyanic acid. Therefore, the correct option is (d) 4.699.

The dissociation reaction of HCN is: HCN ⇌ H+ + CN-

The expression for the Ka is: Ka = [H+][CN-]/[HCN]

We are given the Ka value as 4.0 x 10^-10, the concentration of HCN as 0.445 M, and we assume the concentration of [CN-] is negligible compared to [HCN].

Therefore, we can write: Ka = [H+][CN-]/[HCN] ≈ [H+]^2/[HCN]

Solving for [H+], we get: [H+] = sqrt(Ka x [HCN]) = sqrt(4.0 x 10^-10 x 0.445) = 1.881 x 10^-6 M

Now, we can calculate the pH using the equation: pH = -log[H+]

Substituting the value of [H+], we get: pH = -log(1.881 x 10^-6) ≈ 4.699

Therefore, the correct answer is (d) 4.699.

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when both L and C are doubled, the new angular frequency of oscillation is half of the original angular frequency.

In a pure LC circuit, the angular frequency of oscillation (ω) is given by the formula:
ω =\frac{1}{\sqrt{(LC)}}
Where L is the inductance and C is the capacitance.
Now, you've mentioned that both L and C are doubled. So, the new values of L and C will be:
L_new = 2L
C_new = 2C
Let's find the new angular frequency of oscillation (ω_new) using the same formula:
ω_new =\frac{ 1}{\sqrt(L_new * C_new)}
Substitute the new values of L and C:
ω_new = \frac{1}{\sqrt((2L) * (2C))}
Factor out the constant 2 from the square root:
ω_new = \frac{1}{\sqrt(4 * LC)}
Since √4 = 2, we can rewrite the equation as:
ω_new =\frac{ 1}{(2 * \sqrt(LC))}
Recall that the original angular frequency (ω) is given by:
ω =\frac{ 1}{\sqrt(LC)}
Comparing both equations, we find:
ω_new = ω/2

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when both L and C are doubled, the new angular frequency of oscillation is half of the original angular frequency.

In a pure LC circuit, the angular frequency of oscillation (ω) is given by the formula:
ω =\frac{1}{\sqrt{(LC)}}
Where L is the inductance and C is the capacitance.
Now, you've mentioned that both L and C are doubled. So, the new values of L and C will be:
L_new = 2L
C_new = 2C
Let's find the new angular frequency of oscillation (ω_new) using the same formula:
ω_new =\frac{ 1}{\sqrt(L_new * C_new)}
Substitute the new values of L and C:
ω_new = \frac{1}{\sqrt((2L) * (2C))}
Factor out the constant 2 from the square root:
ω_new = \frac{1}{\sqrt(4 * LC)}
Since √4 = 2, we can rewrite the equation as:
ω_new =\frac{ 1}{(2 * \sqrt(LC))}
Recall that the original angular frequency (ω) is given by:
ω =\frac{ 1}{\sqrt(LC)}
Comparing both equations, we find:
ω_new = ω/2

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The volume of the balloon if five more same-sized breaths are added to the balloon is 4L.A measurement of three-dimensional space is volume. Numerous imperial or US customary units, as well as SI-derived units, are frequently used to quantify it quantitatively.

The quantity of air a balloon can contain is measured by its volume. A balloon's volume is expressed in cubic feet or meters. A balloon can contain 14.5 cubic feet of air on average. The size of the balloon, the volume of air within, and the temperature of the air all have an impact on the volume of the balloon.

The amount of space occupied by a substance or item, or the volume of space enclosed within a container.

The volume of inflated balloon is 1.5 L

\(1.5 X \frac{1 breath}{3breath} =0.5\)

The final volume after 8 breaths

\(0.5 X \frac{8 breath}{1 breath} =4 L\)

Thus, the volume of the balloon after five more breaths is 4.5 L.

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Answer:

conversion factor

Answer:

rising up- gravity forces decrease

falling down- gravity forces increase

uh im not sure about the last one, sorry

Explanation:

The surface tension depends on the intermolecular forces, and it rises as the strength of those forces rises. Hydrogen bonds are present in water in acetone, but not the other way around. Water, therefore, has a high surface tension.

The only other liquid with a higher surface tension than water is mercury. A sign that the hydrogen bond is present is surface tension. Hydrogen bonds between the water molecules below them and those at the surface of the water create a powerful attraction between them.

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Answer:

0.75 M

Explanation:

M1 = 0.15 M

V1 = 125 mL or 0.125 L

M2 = Y

V2 = 25 mL or 0.025 L

0.15 M x 0.125 mL = Y x 0.025 L

Y =  0.15 M x 0.125 mL / 0.025 L

Cancel out the mL

Y = 0.01875M /  0.025 L

Y = 0.75M

Answer:

0.125 M

Explanation:

M₁V₁ = M₂V₂

125 mL / 1000 = 0.125 L = V₁

25 + 125 = 150 mL / 1000 = 0.150 L = V₂

0.15 M = M₁

M₁ × V₁ / V₂ = M₂

(0.15) × (0.125) / (0.150) = 0.125 M

0.125 M is the answer

Glyphosphate, lindane, 2,4-d, chlordane are organic compound that have chlorine in common.

Organic compound are group of chemical substance that have carbon and hydrogen atoms in which the bonds are covalently linked together.

Therefore, Glyphosphate, lindane, 2,4-d, chlordane are organic compound that have chlorine in common and these chemicals are use as herbicides that is kill weeds, or to kill insects or pests because of chlorine present in it.

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Answer:

The mass of 25 g of CO2 is approximately 25.01 g.

Explanation:

The molar mass of CO2 (carbon dioxide) is approximately 44.01 g/mol.

To calculate the mass of 25 g of CO2, we can use the following formula:

mass = number of moles × molar mass

First, we need to determine the number of moles of CO2 in 25 g. We can do this by dividing the mass by the molar mass:

number of moles = 25 g ÷ 44.01 g/mol ≈ 0.568 mol

Now, we can use the formula above to calculate the mass:

mass = 0.568 mol × 44.01 g/mol ≈ 25.01 g

Therefore, the mass of 25 g of CO2 is approximately 25.01 g.

The pressure inside the container is 3.25 × 10⁴ Pa.

The ideal gas law, which connects a gas's pressure, volume, temperature, and molecular weight:

PV = nRT

We are given the volume of the container (50 L = 0.050 m³), the number of moles of oxygen gas (1.41 mol), and the temperature (473 K). We can rearrange the ideal gas law to solve for the pressure:

P = nRT/V

Plugging in the values we get:

P = (1.41 mol) × (8.31 J/(mol·K)) × (473 K) / (0.050 m³)

P = 3.25 × 10⁴ Pa

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Answer:

the sun beams down on the pool and heats it up top to bottom the deeper the colder

Answer:

1.heterogeneous mixture

2.element

3.compound

4.homogeneous mixture

Explanation:

The correct pairs are:

A cloud, which consist of small water droplets - Heterogeneous mixture

Distributed throughout the air

helium, a gas composed of identical atoms - Element

Rubbing alcohol, a liquid composed of chemically bonded - Compound

Carbon, Oxygen, and Hydrogen atoms

sugar thoroughly dissolved in water - Homogenous mixture.

In Heterogenous mixture, the composition of the mixture is not uniform. In Homogenous mixture, the composition is uniform throughout. Element is the combination of same atoms. Compound contains two or more elements.

Therefore, the correct pairs are,

A cloud, which consist of small water droplets - Heterogeneous mixture

Distributed throughout the air

helium, a gas composed of identical atoms - Element

Rubbing alcohol, a liquid composed of chemically bonded - Compound

Carbon, Oxygen, and Hydrogen atoms

sugar thoroughly dissolved in water - Homogenous mixture.

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The formula \(S = k ln(W)\) relates the disorder or randomness of a system to its temperature

Entropy is a measure of the disorder or randomness of a system. It can be defined using Boltzmann's constant \((k),\) which relates the energy of a system to its temperature.

The formula for entropy \((S)\) using Boltzmann's constant is:

\(S = k ln(W)\)

where W is the number of microstates that correspond to a given macrostate. In other words, W is the number of ways that a system can be arranged while still maintaining the same macroscopic properties, such as temperature, volume, and pressure.

Boltzmann's constant is a fundamental physical constant that relates the average kinetic energy of particles in a system to its temperature. It is defined as \(k = R/N_A,\) where R is the gas constant and \(N_A\) is Avogadro's number.

The natural logarithm of W \((ln(W))\) is a measure of the multiplicity of a system, or the number of possible arrangements of its particles. The higher the multiplicity, the more ways the system can be arranged, and the more disorder or randomness it has.

Therefore, through Boltzmann's constant and the number of possible arrangements of the system.

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When heat is added or removed from an object after he completed his test with the mug of hot chocolate Eric concludes that arrow A shows the direction heat flowed because the temperature of his hand increased as heat was absorbed by his hand. Therefore, option A is correct.

The term heat is defined as the transfer of kinetic energy from one medium or object to another, or from an energy source to a medium or object.

According to the description, Eric can conclude that when 'heat is either prepended or separated from an object after the completion of his test,' as arrow A shows the direction in which the heat has flown because his hands' temperature increased after the heat was absorbed by his hand.

It implies that heat is added when his hand's temperature rises and removed when the heat is removed.

Thus, option A is correct.

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Your question is incomplete, most probably your question was

Eric is investigating what happens when heat is added or removed from an object. First he places a mug of hot chocolate in this hand and records the temperature of the hot chocolate and the surface of his hand every five minutes for a total of 15 minutes. He repeats this procedure when investigating heat flow with an ice cube. Use the diagram to answer the question below. A flowchart illustration with two forward (right direction) arrows and two backward (left direction) arrows. The phrase Mug of chocolate is followed by the forward arrow A that leads to the word Hand. The word Hand is followed by the forward arrow C that leads to the phrase Ice cube. The word Ice cube is preceded by the backward arrow D that leads to the word Hand. The word Hand is preceded by a backward arrow B that leads to the phrase Mug of hot chocolate. What could Eric conclude about what happens when heat is added or removed from an object after he completed his test with the mug of hot chocolate? A. Arrow A shows the direction heat flowed because the temperature of his hand increased as heat was absorbed by his hand. B. Arrow A shows the direction heat flowed because the temperature of his hand increased as heat was released from his hand. C. Arrow B shows the direction heat flowed because the temperature of the hot chocolate changed as heat was absorbed by the mug. D. Arrow B shows the direction heat flowed because the temperature of the hot chocolate changed as heat was absorbed by his hand.

Answer:

d.They do not want to live near towers that transfer electricity

Explanation:

Due to Incomplete combustion, a candle produces a yellow flame and due to complete combustion, an LPG burner produces a blue flame.

A candle is made of wax, which does not burn completely. As a result, candles have partial combustion, which gives them their yellow color. On the other hand, LPG (Liquified Petroleum Gas), burns at approx. around 1,960°C temperature. Hence, LPG burners have complete combustion, giving them their blue color.

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Answer:

Ca- 20,20,20

Na-11,12,11

U-92,146,92

i dont know what the last one is

Explanation:

Sunlight energy can be converted by photosynthesis into chemical energy in the form of carbohydrates, which can then be used by the body for cellular respiration. Humans employ oxygen and carbohydrates, the byproducts of photosynthesis, to create energy, water, and carbon dioxide. Human breath carbon dioxide is used by the plant to complete photosynthesis.

Green plants and certain other organisms convert light energy into chemical energy through a process called photosynthesis. Light energy is gathered and utilized during photosynthesis in green plants to change the water, carbon dioxide, and minerals into oxygen- and energy-rich organic molecules.

It is impossible to overstate the role that photosynthesis plays in sustaining life on Earth. There would soon be little food or other organic materials on Earth if photosynthesis stopped. The majority of life would vanish, and eventually, the atmosphere of Earth would contain almost no gaseous oxygen. Only chemosynthetic bacteria, which can use the chemical energy of specific inorganic substances and are not reliant on the conversion of light energy, would be able to survive in such an environment.

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Answer: Animation: Burning gas makes the air inside the balloon less dense, producing an upward force or lift. 1) A hot air balloon stays on the ground (or descends) when the air inside it is too cool. ... 3) When the air is hotter still, the balloon rises because the lift force is greater than the weight.

Explanation:

Common sense

Answer:

monkey

Explanation:

cause that's what u r

The number of the molecules of water is 1.8 g is  6.02 * 10^22 molecules.

We can be able to obtain the molecules from the Avogadro's number. We know that the number of the molecules that we find in the compound can be gotten by the use of the proposition that was put forward by Avogadro.

Number of moles of the water = 1.8g/18 g/mol = 0.1 moles

We know that;

1 mole of water contains 6.02 * 10^23 molecules of water

0.1 moles of water would contain 0.1 mole * 6.02 * 10^23 molecules/ 1 mole

= 6.02 * 10^22 molecules

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Answer:

Pottasium reacts with water vigorously and the reation is exothermic. The heat released causes the hydrogen released to ignite

Explanation:

That oil sands executive is greedy and heartless and therefore can't be trusted when she claims is Ad hominem attack. So, Option B is correct.

4-  The argument in question 4 is an example of an ad hominem attack. This is due to the argument's focus on the character of the oil sands executuive rather than the actual problem, which is how to improve the company's environmental record.

The argument holds that the executive cannot be believed when she says she wants to improve the company's environmental record because she is avaricious and callous. This is an error in logic, though, as the executive's character may not necessarily be related to the company's environmental policies.

5-  The argument in question 5 is an example of an appeal to ignorance. This is because the argument states that there is no proof that humans are causing climate change, so it must be natural causes. Just because there is no conclusive proof that humans are causing climate change, it does not mean that they are not.

The argument assumes that just because there is no evidence to the contrary, the argument must be true. This is a logical fallacy.

So, Option B is correct.

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Answer:

Try googling it that will help. If not I don't know?

Explanation:

Molality of a solution is defined as the number of moles of solute per kilogram of solvent. The formula for molality is given by the following equation:molality (m) = moles of solute / mass of solvent (in kg)In order to calculate the molality of a 12 percent urea solution, we need to first determine the mass of urea present in the solution.

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From the list provided, the following groups are part of the periodic table are Metals, Nonmetals , Semimetals and Conductors .

Metals: Metals are a group of elements that are typically solid, shiny, malleable, and good conductors of heat and electricity. They are located on the left-hand side and middle of the periodic table.

Nonmetals: Nonmetals are elements that have properties opposite to those of metals. They are generally poor conductors of heat and electricity and can be found on the right-hand side of the periodic table.

Semimetals: Semimetals, also known as metalloids, are elements that have properties intermediate between metals and nonmetals. They exhibit characteristics of both groups and are located along the "staircase" line on the periodic table.

Conductors: Conductors are materials that allow the flow of electricity or heat. In the context of the periodic table, certain metals and metalloids are good conductors of electricity.

Therefore, the groups that are part of the periodic table are metals, nonmetals, semimetals, and conductors. The other groups mentioned, such as acids, flammable gases, and ores, are not specific groups found on the periodic table but may be related to certain elements or compounds present in the table.

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The complete question is :

From the list below, choose which groups are part of the periodic table.

metals

acids

flammable gases

nonmetals

semimetals

ores

conductors

Answer: Glucose (C6H12O6) is a hexose -- a monosaccharide containing six carbon atoms. Glucose is an aldehyde (contains a -CHO group). Five of the carbons plus an oxygen atom form a loop called a "pyranose ring", the most stable form for six-carbon aldoses.

Explanation:.