Four quantum numbers of the last electron of Ca^2+

The substance that has vibrating particles in regular, fixed positions is Ca(s). Solids are distinguished by the regular, fixed positions of their particles.

The solid particles are tightly packed together, with little empty space between them. The distance between the atoms is less than in liquids or gases, and the attractive forces between the particles are stronger. These forces keep the particles in their place, causing the particles to vibrate around a fixed position.When it comes to their shape, solids are characterized by having a fixed shape that does not conform to the container's shape in which they are placed. Solid matter's density is typically higher than that of liquids and gases.

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Yes, hexane and diethyl ether, a solvent pair, will definitely function as a team during crystallization.

This is due to the fact that crystal formation requires a miscible solvent pair. Normally, two solvents—one in which the compound is soluble and one in which it is not—are required for crystallization. Additionally, these two solvents ought to mix easily.

Hexane and diethyl ether, the given solvent pair, are miscible with one another. Therefore, we can crystallize using the solvent pair mentioned above.

What is crystallization?

Crystallization is the process of increasing the concentration of a solution to a supersaturated state in order to form solid particles in a homogeneous phase. Crystallization is the process by which crystals are formed from either melted material or a solution.

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Answer:

+3

Explanation:

cause im smart........

Answer:

+3

Explanation:

Because elements of group 13 have 3 valence electrons they loses them and show +3 charge

Like Al3+

Answer:

sight, taste, touch, hearing and smell

Explanation:

Anything detected with the five senses is considered a sensory perception or sensory experience

Our five senses are sight (vision), hearing (audition), taste (gustation), touch (tactile perception), and smell (olfaction). These senses allow us to perceive and interpret information from the external environment.

When stated as "detected with the five senses," which means gather information about the world around us through these sensory experiences.

For example:

1. Sight (Vision): We perceive visual information through our eyes, allowing us to see colors, shapes, and movements.

2. Hearing (Audition): We perceive auditory information through our ears, allowing us to hear sounds and distinguish between different tones and pitches.

3. Taste (Gustation): We perceive taste sensations through our taste buds on the tongue, allowing us to distinguish between sweet, sour, salty, bitter, and umami flavors.

4. Touch (Tactile Perception): We perceive tactile sensations through our skin, allowing us to feel textures, pressure, temperature, and pain.

5. Smell (Olfaction): We perceive smells through our olfactory system, located in our nose, allowing us to detect and identify various scents and odors.

All the sensory experiences , whether through sight, hearing, taste, touch, or smell, contribute to our understanding of the world and our surroundings.

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The benefits of transmuting metals include having access to rare and valuable materials as well as reduced environmental impact.

Some losses from transmuting metals include the high cost and the safety concerns from radiation.

Transmuting metals involves the transformation of one metal into another by means of nuclear reactions. transmuting metals can provide access to rare and valuable metals that are in short supply, such as platinum and gold.

The process of transmuting metals can be expensive, especially if done on a large scale. The process of transmuting metals involves the use of nuclear reactions, which can pose a risk of radiation exposure.

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Answer:

What are the benefits of transmuting metals?

Although in the present state of science no chemist can say that lead and gold do not contain the same elements.

What can you gain from transmuting metals?

To the alchemists of old, this meant the conversion of one physical substance into another, particularly base metals such as lead into valuable silver and gold.

What can you lose by transmuting metals?

A transmutation entails a change in the structure of atomic nuclei and hence may be induced by a nuclear reaction (q.v.), such as neutron capture, or occur spontaneously by radioactive decay, such as alpha decay and beta decay (qq. v.).

it is limited by the costly and cumbersome need to separate long-lived fission product isotopes before they can undergo transmutation. also, some long-lived fission products, due to their small neutron capture cross sections, are unable to capture enough neutrons for effective transmutation to occur.

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Answer:

1. 4 toothpicks weigh 0.04 grams

2. about 0.60 grams

Explanation:

4 x 0.01 = 0.04 grams

The A in the diagram indicates +VE. The correct option is A.

What is enthalpy?

Enthalpy is the result of the pressure, volume, and internal energy of the system added together.

The graphic shows that the enthalpy of the products is higher than the enthalpy of the reactants, proving that Hrxn is positive as shown in the previous response.

The difference between the total enthalpy (heat content) of the products of a reaction and the total enthalpy (heat content) of the reactants in that reaction is used to find out the enthalpy of the reaction (Hrxn).

Thus, the correct option is A. +VE.

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Answer:

2.52\(x10^{23}\) atoms*

Explanation:

\(\frac{0.419mol}{1} *\frac{6.02*10^{23}atoms }{1 mol} =2.52238x10^{23}\)atoms

*i put the answer in correct sig figs(significant figures) in case your teacher is like mine and wants answers like that

Enolates are commonly formed from the deprotonation of ketones or aldehydes, which results in the formation of a carbonyl group with a negative charge.

The difference between an enol and an enolate is that an enol is a compound that has both an alcohol (-OH) and an alkene (=C-H) group, while an enolate is the anionic form of an enol after deprotonation of the alpha-carbon adjacent to the carbonyl group. Enolates are formed by removing a proton from the alpha-carbon of the enol, which gives the molecule a negative charge alcohols, on the other hand, are a class of organic compounds that contain an -OH functional group. Alcohols can be classified based on the number of alkyl groups attached to the carbon atom that is bonded to the -OH group. Primary, secondary, and tertiary alcohols are examples of this classification. Alcohols can also be converted into enols by deprotonation of the -OH group.

In summary, enols and enolates are related but different compounds. Enols are alcohols that contain an alkene group, while enolates are the anionic form of enols after deprotonation of the alpha-carbon adjacent to the carbonyl group. Alcohols, on the other hand, are a class of organic compounds that contain an -OH functional group.

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The concentration and size of the boxes appear to be highest near Broad Street.

Communicable diseases are those diseases that can be transferred from one person to another and one animal to another animal or person.

The black boxes show the relative numbers of cholera-related fatalities. Because of the lack of socioeconomic development in the locations where it occurs, cholera is known as a disease of poverty.

Overpopulated camps are ideal for a cholera breakout. Other humanitarian emergencies that interrupt water and sanitation infrastructure include earthquakes, civil upheaval, and war.

Therefore, near Broad Street, both the quantity and size of the boxes seem to be at their maximum.

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The question is incomplete. Your most probably complete question is given below:

The Spread of 30The Spied of- Tools Communicable diseases are spread between indivuals by different methods, but they are all caused by pathogens, which are commonly called "germs." Knowledge of pathogens and the ways in which they can be spread helps humans understand and prevent disease out Model 1 - The 1854 London Cholera Outbreak Relative number of deaths due to cholera Portland S. St. Annes Court Beoad St. Pamp 2 Peter St. Old Compton St Pamp Pump +

A. In this pair, H3O+ is the stronger acid because it can donate a proton more easily than HCN.
B. H2SO4 is the stronger acid in this pair because it is a strong acid, while HCN is a weak acid.
C. HS? is the stronger acid in this pair because it has a greater positive charge on the sulfur atom, making it more acidic than H2S.

The stronger acid in each pair.

A. Between HCN and H3O+, the stronger acid is H3O+. H3O+ is a stronger acid due to its higher ability to donate a proton.

B. Between H2SO4 and HCN, the stronger acid is H2SO4. H2SO4 is a stronger acid because it has a higher degree of ionization and can donate more protons than HCN.

C. Between HS- and H2S, the stronger acid is H2S. H2S is a stronger acid because it more readily donates a proton compared to HS-.

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Explanation:

an acid will give away a proton and become a conjugate base.

A base will accept a proton and become a conjugate acid.

Answer:

The presence of a brightly colored, detachable tail can be advantageous for some lizards because it serves as a distraction or decoy for predators. When a predator attacks, the lizard can quickly detach its tail, which wriggles and continues to move for a short period of time. This sudden movement can divert the predator's attention away from the lizard's body, allowing the lizard to escape.

The bright coloration of the tail can also help to draw the predator's attention towards it, instead of the lizard's body. Bright colors are often used in the animal kingdom as warning signals, indicating that an animal is toxic or dangerous. While the lizard may not necessarily be toxic or dangerous, the bright colors of its tail can create a similar effect, deterring predators from attacking in the first place.

Additionally, the detachable tail can serve as a form of self-defense, allowing the lizard to escape from a predator's grasp. By detaching its tail, the lizard can leave the predator with a distraction while it makes its escape. Over time, the lizard can regrow its tail, allowing it to continue to use this defense mechanism in the future.

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 80 × 1.6

We have the final answer as

Hope this helps you

Answer:

whatttttttttttttr//ttttt

Answer:

41 inches

Explanation:

There is 12 inches in 1 foot so times 12 and 3. Thats 36 so now do 36 + 5 that =41.

Answer:

call an vet ASAP 10 pounds of chocolate is very bad for a dog.

Explanation:

Chocolate is one of the worst things a dog can eat, and 10 pounds of it is worst! Take your dog to the vet IMMEDIATELY! I hope that that the dog will survive.

-------------------------------------------------------------------------------------------------------------Brainiest would make my day, but you don’t have to give it! You’re welcome.

D. Able to answer for one's conduct and obligations

The amygdala is a pair of almond-shaped structures located in the brain's temporal lobes. It is part of the limbic system, which is involved in the processing of emotions and memory. The amygdala is involved in the formation of memories associated with emotional events, as well as the reaction to those memories.

The amygdala also plays a role in the regulation of the body's fight-or-flight response, which is the autonomic nervous system's response to danger or perceived danger. It is thought to be involved in the formation of fears and phobias, as well as the development of aggressive behaviors. In addition, the amygdala is believed to be involved in the processing of social cues, such as facial expressions and body language.

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The events most likely occurred during Stage 2 sleep.

During Stage 2 sleep, brain activity slows down and the body begins to relax. This is a light sleep stage that accounts for the majority of our sleep cycle. It is characterized by bursts of brain activity called sleep spindles and K-complexes. This stage is also when we are most likely to be awakened by external stimuli, such as a sibling walking in the hallway. However, once we are fully asleep again, it is difficult to remember being awakened. Overall, Stage 2 sleep is important for restoring energy and preparing the body for the deeper stages of sleep.

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A compound that occupies a receptor, but does not activate the neuron is known as an antagonist.

A neurotransmitter receptor (also known as a neuroreceptor) is a protein on the membrane that is activated by a neurotransmitter. Chemicals on the cell's surface, such as a neurotransmitter, can bind to the membrane, and receptors can be found along the membrane.

G-protein coupled receptors are found on the majority of neurotransmitter receptors. Neurotransmitter (NT) receptors can be found on the surface of neurons and glia. One neuron sends messages to the other neuron via neurotransmitters at a synapse.

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Answer:

A meteor shower are defined as the celestial event in which a meteor comes from one point in the sky and visible in night sky.

Meteors are also known as Shooting stars as they glow when enters in the Earth surface as glowing streaks, where tail point to the origin in the sky and face faces the Earth surface.

Meteor showers take place when meteoroids entering Earth's atmosphere.

Meteor showers can repeat themselves because it depends on the comet orbits which can take place at the same time each year.

The volume of the copper is equal to  4cm³.

The density of the substance can be described as the substance's mass per unit of its volume. The symbol commonly used to express density is ρ and the D letter can also be used.

The mathematical formula of the density can be expressed as written below:

Density = Mass/Volume or ρ = m/V

The density of a material varies with temperature and pressure. There is a small variation for solids as well as liquids but much larger for gases. Increasing the pressure of material decreases the volume of material and thus increases its density.

Given the mass of the copper = 35.2 g

The density of the copper at  20°C, d = 8.80 g/cm³

The volume of the copper, V = mass/density = 35.2/8.80 = 4 cm³

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The pressure acting here is 3.32 atm. Then the volume of copper can be determined using ideal gas law. The volume is 3.9 L.

Ideal gas equation is a combination of   Boyle's law, Charle's law and Avogadro's law. The expression relating pressure, volume,   temperature and number of moles of a gas is written as:

PV = nRT.

It can be rearranged as PM = dRT.

where d is the density and M be the mass.

Atomic mass of copper = 63.5 g/mol

density = 8.80 g/cm³

T = 20° C or 293 K.

Then pressure p =  dRT/M

p = 8.80 g/cm³ × 0.082× 293 /63.5 = 3.32 atm

Now the weight of copper = 35.2 g

number of moles of Cu = 35.2/63.5 = 0.5 g.

Then, v = nRT/P

v = 0.5 × 0.082 × 293 /3.32 = 3.9 cm³.

Therefore, the volume of copper is 3.9 L.

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Answer: 91.5 kJ

Explanation:

Answer: D- making flexible eyeglass frames

Explanation: my powerful mind

To determine the size (volume) of the tank interior holding 1.786 mol of argon gas at STP (standard temperature and pressure), we need to use the ideal gas law equation, PV = nRT. At STP, the temperature (T) is 273.15 K, and the pressure (P) is 1 atm. We also need to know the gas constant (R), which is 0.0821 L·atm/(mol·K). By rearranging the equation and solving for volume (V), we find that the size of the tank interior must be approximately 38.7 L.

The ideal gas law equation, PV = nRT, relates the pressure (P), volume (V), number of moles (n), gas constant (R), and temperature (T). At STP, the temperature is 273.15 K, and the pressure is 1 atm.

Rearranging the equation to solve for volume (V), we have V = (nRT) / P. Plugging in the values for the number of moles (n) as 1.786 mol, the gas constant (R) as 0.0821 L·atm/(mol·K), and the pressure (P) as 1 atm, we get V = (1.786 mol * 0.0821 L·atm/(mol·K) * 273.15 K) / 1 atm.

Simplifying the equation, we find V = 38.7 L. Therefore, the size (volume) of the tank interior holding 1.786 mol of argon gas at STP must be approximately 38.7 L.

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Answer:

The moons orbit around planets.

Mass is the force that holds people ans objects to earths surface.

Explanation:

Answer:

A, C, E, G

Explanation:

I think they are your answer

Can I have brainliest

The colorimetric determination of cobalt with dimethylglyoxime and benzidine is a method used to quantify the concentration of cobalt ions in a solution based on the formation of a colored complex.

Dimethylglyoxime (DMG) and benzidine are reagents that react with cobalt ions to form a red-colored complex. The intensity of the color is directly proportional to the concentration of cobalt ions present in the solution.

The procedure involves adding DMG and benzidine reagents to the solution containing cobalt ions. The cobalt ions react with DMG and benzidine to form the red complex. The absorbance of the colored complex is then measured using a spectrophotometer at a specific wavelength.

To determine the concentration of cobalt, a calibration curve is prepared using known concentrations of cobalt solutions. The absorbance values of the solutions are measured, and a linear relationship between absorbance and concentration is established.

By measuring the absorbance of the unknown cobalt solution and using the calibration curve, the concentration of cobalt can be determined.

The colorimetric determination of cobalt with dimethylglyoxime and benzidine provides a quantitative method to measure the concentration of cobalt ions in a solution. The formation of a red-colored complex allows for the measurement of absorbance, which is directly related to the concentration of cobalt. This method is useful in various applications, such as environmental analysis, industrial processes, and research involving cobalt-containing compounds.

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if you combined a polar solvent with a molecule that has a carbonyl group the value of Rf will be low:

The more polar the compound, the more it will adhere to the absorbent and the smaller the distance it will travel from the baseline, and the lower its Rf value.

An Rf value of 1 or too close to it means that the spot and the solvent front travel close together and are therefore unreliable.

Rf values can be affected by layer thickness, moisture on the TLC plate, vessel saturation, temperature, depth of mobile phase, nature of the TLC plate, sample size, and solvent parameters.

A carbonyl group would be not very polar because carbon double-bonded with oxygen would create a London dispersion force which is very weak.

Therefore the value of Rf will be low when a polar solvent is combined with a molecular that has a carbonyl group.

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Answer:

20

Explanation: