Phenolphthalein turns litmus paper what color?

Answer:

that it i think

Explanation:

the earth revolves around the Sun once each year and spins on its axis of rotation once each day. This axis of rotation is tilted 23.5 degrees relative to its plane of orbit around the Sun. The axis of rotation is pointed toward Polaris the North Star. As the Earth orbits the Sun the tilt of Earth’s axis stays lined up with the North Star.

The average acceleration from the following data points is 20.625 m/s^2.

We know that average acceleration = change in speed / change in time
here,

change in speed = v2-v1

                          = 975-150

                          = 825 m/s

change in time   = t2 - t1

                         = 55 - 15

                         = 40 s

now, putting all the values, average acceleration = 825 / 40

                                                                             = 20.625 m/ s^2 .

what is acceleration?

The rate at which an entity's velocity with regard to time changes is referred to as acceleration in mechanics. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration.

The SI unit of acceleration is metre per second square (m/s^2).

An average acceleration the speed at which velocity changes, the evolution of velocity through time, or the instantaneous acceleration ( acceleration at a given moment ) .

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The variable position in the signature sequence that can be occupied by any amino acid, although one amino acid appears much more often than any other, is usually denoted as the "variable" or "diversity" position.

In protein sequences, there are often conserved regions that contribute to the function or structure of the protein. These conserved regions can be identified by comparing the amino acid sequences of related proteins and noting the positions where the same amino acid appears across multiple sequences. However, in some cases, there is a position in the sequence where multiple amino acids can be found, although one amino acid may be more prevalent than the others.

To determine this variable position, researchers typically align a set of related protein sequences and analyze the frequency of amino acids occurring at each position. The position with the highest variability, where multiple amino acids are observed but one amino acid is more frequent than the others, is identified as the variable position.

The variable position in the signature sequence is a position in the amino acid sequence of a protein where multiple amino acids can occur, although one amino acid is more commonly observed than others. This variability can provide insights into the functional or structural diversity of related proteins and can be studied further to understand the significance of the amino acid variation at that position.

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Answer: B

Explanation: I don’t really know how to explain this because it’s just something my teacher told me and it just stuck in my head

Answer:

Magma

Explanation: cuz S waves travel through solids water, soil, and air are not solids so ur answer is B; magma

Answer:

c. soil

Explanation:

this is the correct answer not the one above...

Se (Selenium) is the only paramagnetic species from the given options.

To determine how many of the following species are paramagnetic: Sc3+, Cl-, Ba2+, and Se, we need to analyze their electron configurations.

1. Sc3+: Scandium has an atomic number of 21, and its electron configuration is [Ar] 4s² 3d¹. When it loses three electrons (Sc3+), the configuration becomes [Ar], with no unpaired electrons. Therefore, Sc3+ is diamagnetic.

2. Cl-: Chlorine has an atomic number of 17, and its electron configuration is [Ne] 3s² 3p⁵. When it gains one electron (Cl-), the configuration becomes [Ne] 3s² 3p⁶, with no unpaired electrons. Therefore, Cl- is diamagnetic.

3. Ba2+: Barium has an atomic number of 56, and its electron configuration is [Xe] 6s². When it loses two electrons (Ba2+), the configuration becomes [Xe], with no unpaired electrons. Therefore, Ba2+ is diamagnetic.

4. Se: Selenium has an atomic number of 34, and its electron configuration is [Ar] 4s² 3d¹⁰ 4p⁴. There are two unpaired electrons in the 4p orbital. Therefore, Se is paramagnetic.

In conclusion, out of the four given species, only one (Se) is paramagnetic.

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Theoretical capacity is the maximum output capability, allowing for no adjustments for preventive maintenance, unplanned downtime, or the like is Rated capacity.

The maximum output capability, with the no adjustments is made for the scheduled is the maintenance, the unanticipated downtime, or the similar circumstances. The capacity of the resource or the system to produce the results over the long term. The  capacity strategy is where the capacity is increased the ahead of the  demand.

The Rated capacity is the maximum working load that is permitted by the manufacturer under the specified working conditions. The long-term, is expected the output capability of the resource or the system.

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This question is incomplete, the complete question is :

The maximum output capability, allowing for no adjustments for preventive maintenance, unplanned downtime, or the like is   __________.

Pulp

distillation

chromatography

Acetone is captured and cooled.

Substance A is rice, and substance B is sugar.

To separate the components of a mixture the substances to be separated must differ in a given physical property.

In chemistry, there are diverse separation techniques used to separate the components of a mixture. Separation depends on differences in a given physical property such as boiling point, solubility in a solvent, difference in particle size etc.

Filtration can be used to separate a solid from a liquid hence it can be used to separate pulp from orange juice.

To separate water and alcohol, distillation is used because such a separation depends on the difference in the boiling points of water and alcohol. Water boils at a higher temperature than alcohol hence the mixture can be separated by distillation.

Chromatography is a method of separation that is dependent on how quickly a the components of a  mixture move through a stationary phase.

Acetone has a lower boiling point than water hence it collected first and cooled before water.

Clearly, substance A must be a solid since it is filtered out after adding water. Substance B must be a water soluble substance which can be recovered from water by evaporation to dryness. Hence substance A is rice, and substance B is sugar.

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The magnitude of vector A - B is 499 m/s.To find the magnitude of the vector A - B, we subtract the corresponding components of A and B and then calculate the magnitude of the resulting vector.

Given:

A = (-4 m/s) î + (3 m/s) ĵ

B = (200 cm/s) î + (300 cm/s) ĵ

First, we need to convert the units of B from cm/s to m/s:

B = (200 cm/s) î + (300 cm/s) ĵ

  = (2 m/s) î + (3 m/s) ĵ

Now, subtracting the components:

A - B = (-4 m/s - 2 m/s) î + (3 m/s - 3 m/s) ĵ

      = (-6 m/s) î + (0 m/s) ĵ

      = (-6 m/s) î

The magnitude of A - B is the absolute value of the resulting vector:

|A - B| = |-6 m/s|

        = 6 m/s

Therefore, the magnitude of vector A - B is 6 m/s.

vector subtraction and magnitude calculations to deepen your understanding of this topic.

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Answer:

Answer is 9.2 grams

Explanation:

Molar mass of ethanol

\({ \bf{CH _{3}CH_{2}OH}} = (12 \times 2) + (6 \times 1) + (16) \\ = 46 \: g\)

for moles:

\({ \sf{1 \: mole \: of \: ethanol \: weighs \: 46 \: g}} \\ { \sf{0.2 \: moles \: weigh \: (0.2 \times 46) \: g}} \\ = 9.2 \: g\)

Yes, the statement is True i.e. Sodium chloride is a buffer creating an injectable solution that is isotonic.

A buffer solution, also referred to as a pH buffer or hydrogen ion buffer, is an aqueous mixture of a weak acid and its conjugate base, or vice versa. The pH scarcely changes at all when a small amount of a strong acid or basic is added to it. Buffer solutions are used in a wide range of chemical processes to keep pH values almost constant. Buffering is used by many living systems to regulate pH in the natural world. For instance, the bicarbonate buffering system regulates the pH of blood, and bicarbonate also acts as a buffer in the ocean. Because of a chemical equilibrium between the weak acid HA and its conjugate base A, buffer solutions are resistant to pH change: HA ⇌ H+ + A− According to Le Chatelier's principle, an equilibrium between a weak acid and its conjugate base shifts to the left when hydrogen ions (H+) are supplied. Because of this, despite the supply of strong acid, the concentration of hydrogen ions increases less than anticipated.

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Answer:

It's explained below.

Explanation:

An everyday situation is when we raise an object.

Now, when we raise an object, energy is transferred to the Earth object system and thus the gravitational field energy of the system will increase.

Now, this energy is usually released when the object falls. The mechanism of this release is known as gravitational force.

In the same manner, two magnetic and electrically charged objects that are interacting at a distance will exert forces on each other and this can lead to transfer of energy between the interacting objects.

Answer:

Explanation:

The Golgi apparatus receives proteins and lipids (fats) from the rough endoplasmic reticulum. It modifies some of them and sorts, concentrates and packs them into sealed droplets called vesicles.

Answer: 500 individual nerds candies for $5 would be better bc u would have more candy and it would last a while

Explanation: would have more candies

To solve this we must be knowing each and every concept related to division. Therefore, 500 individual nerds candy for $5 is preferable since you will have more candy and it will last longer.

Division is one of four fundamental mathematical operations, the others being addition, subtraction, and multiplication. Division is defined as the equal division of larger groups into smaller units.

The division of labor is the sequence of tasks given to and performed by the  group of staff in order to maximize efficiency. The splitting down of a job into multiple separate parts that make up the total is referred to as division of labor. 500 individual nerds candy for $5 is preferable since you will have more candy and it will last longer.

Therefore, 500 individual nerds candy for $5 is preferable since you will have more candy and it will last longer.

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Answer:

espero poderte ayudar

Explanation:

Answer:

2FMg

Explanation:

MgF*2=2FMg

The vast majority of the reactions you have experienced up until this point only goes in one direction.

To put it another way, by the time the reaction is complete, all of the reactants have been transformed into products. When a reaction of this type takes place, it is said to have gone to completion. This sort of reaction takes place when the products of the reaction are significantly more stable than the reactants.

This is not always the case with reactions. There are occasions when the products interact with one another to produce the reactants again. The reaction that takes place between the reactants in order to produce the products is referred to as the forward reaction. The process by which the products undergo a transformation into the reactants is referred to as the reverse reaction.

1. ATP+H20 yields ADP+ Pi

DeltaG' = -32KJ/mol, Forward reaction occurs.

2. ATP + glycerol yields glycerol 3 phosphate + ADP

DeltaG' = -30.5 - (-9.2) kJ/mol = -21.3 kJ/mol, Forward reaction occurs.

3. ATP +pyruvate yields phosphoenolpyruvate + ADP

3. DeltaG' = -30.5 - (-61.9) kJ/mol = +31.4 kJ/mol, Reverse reaction occurs.

4. ATP+ glucose yields glucose 6 phosphate +ADP

DeltaG' = -30.5 - (-13.8) kJ/mol = -16.7 kJ/mol, Forward reaction occurs.

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To determine the pressure required to reduce the volume of a gas from 75 mL to 19 mL at a temperature of 26°C, we need to use the combined gas law equation, which incorporates the initial and final volumes, pressures, and temperatures. By rearranging the equation and solving for the final pressure, we can find the answer.

However, the information regarding the initial pressure is missing, making it impossible to provide a specific answer without that data.

The combined gas law equation, P1V1/T1 = P2V2/T2, relates the initial pressure (P1), initial volume (V1), initial temperature (T1), final pressure (P2), final volume (V2), and final temperature (T2) of a gas.

Given that the initial volume (V1) is 75 mL, the final volume (V2) is 19 mL, and the final temperature (T2) is 26°C, we can rearrange the equation to solve for the final pressure (P2).

However, the information about the initial pressure (P1) is missing from the question, which is necessary to calculate the final pressure (P2) using the combined gas law equation. Without knowing the initial pressure, it is not possible to provide a specific answer.

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Answer:

Liquid

Explanation:

If a phase is skipped, the skipped phase will be liquid because it is the only phase between solid and gas.

Answer:

liquid

Explanation:

sublimation, is when a substance goes directly from a solid to gas. it doesn't pass through the liquid state.

Answer:

There is only one sub level in the first principal energy level, and it is 1s

Explanation:

trust

Answer:

what model

Explanation:

ill answer if u have model

Answer:

SF6

Explanation:

Octet Rule

The central atom covalent bounds with 6 flourine atoms.

8.2 x 10⁻⁸N is the Coulomb force acting on the electron due to the proton in the hydrogen atom.

To calculate the Coulomb force acting on the electron due to the proton in a simplified model of a hydrogen atom, we can use the following formula:
\(F=(kq1q2/r^{2} )\)
where F is the Coulomb force, k is the Coulomb's constant (8.99 x 10⁹ N m² C⁻²), q1 and q2 are the charges of the two particles (electron and proton), and r is the distance between them.
In a hydrogen atom, the electron and proton have equal but opposite charges, so q1 = q2 = e, where e is the elementary charge (1.6 x 10⁻¹⁹ C). The diameter of the hydrogen atom is given as 0.10 nm, so the radius (r) is half of that, which is 0.05 nm or 0.05 x 10⁻⁹ m.
Now, we can plug in the values into the formula:
F = (8.99 x 10⁹ N m² C⁻²) × (1.6 x 10⁻¹⁹ C)² / (0.05 x 10⁻⁹ m)²
F ≈ 8.2 x 10⁻⁸ N
So, the Coulomb force acting on the electron due to the proton in this simplified model of a hydrogen atom is approximately 8.2 x 10⁻⁸N.

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First of all, Z is unknown. I hope it is a mistake.

        Now, it is given that the element X has nineteen electrons. This proves that X is actually Potassium.

        As per the periodic table, both Potassium and Lithium belongs to group 1 as their valency is 1 because of the presence of only one electron in the outermost shell of electrons i.e., they lose an electron during a chemical reaction to form a stable compound. Furthermore, both are metallic.

        Magnesium belongs to group 2 and hence its valency is two, which is different from potassium though it is metallic. Similiarly, bromine belongs to group 17 and gains one electron during a reaction in contrast to potassium.

( No internal links available for reference. For clarification, check the periodic table).

Answer:

Explanation:

1) Fe2O3 + 3 H2 -----> 2 Fe + 3 H2O Number of moles of Iron (III)oxide = 450 g / 159.69 g/mol = 2.82 mole

2) 0.0155 moles of hydrogen gas

3) oxide needed to produce 125 of oxygen is7.8 moles

4) 216.5894

5) K3PO4 and KNO3

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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The product of an acid-base reaction that is most likely to be an ionic compound is a salt. Option D).

In an acid-base reaction, the product that is most likely to be an ionic compound is a salt. A salt is formed when an acid reacts with a base, resulting in the transfer of ions between the two reactants. Acids typically release hydrogen ions (H+) when dissolved in water, while bases release hydroxide ions (OH-). When these ions combine, they form water (H2O), which is a neutral molecule.

However, in addition to water, the reaction between an acid and a base also produces a salt. A salt is an ionic compound composed of positive and negative ions. The positive ion usually comes from the base, while the negative ion comes from the acid. The combination of these ions results in the formation of an ionic compound, which is commonly referred to as a salt.

Therefore, the product of an acid-base reaction that is most likely to be an ionic compound is a salt. Hence option D) is correct.

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In an oxidation-reduction experiment, it is important to observe the reaction after 30 minutes because the reaction requires time to complete.

During this time, the solution and solid may look different than when the reaction begins, and silver may continue to precipitate for 30 minutes.

By observing the reaction after 30 minutes, we can ensure that the reaction has completed and that we have accurate results.

It also allows us to analyze the full extent of the reaction and make any necessary adjustments or observations. Therefore, it is crucial to wait the full 30 minutes before analyzing the results of an oxidation-reduction experiment.

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