A particular saturated solution of Ca3(PO4)2 has [Ca2+]=[PO3?4]=2.9×10?7M. A) What is the value of Ksp for Ca3(PO4)2?

Answer:

It’s caused by a disturbance.

It requires a medium to travel.

Explanation:

A wave is an unsettling influence that sends energy starting with one point then onto the next. It does no essentially convey the particles or matter of the medium.  

Waves typically conveys energy. It is this energy they use in making aggravations.  

Not all waves conveys matter; a genuine model is electromagnetic waves. Additionally, electromagnetic waves don't need a mode for proliferation.

Answer: The only answer that is NOT true is that waves carry matter.

Explanation:

Waves are caused by a disturbance, require a medium to travel (by definition) and carry energy.

If you're talking about electromagnetic waves tho, those do not require a medium. Waves in general DO require a medium

Answer:

0.25M

Explanation:

acording to M1V1/M2V2=n1/n2

Answer:

i believe it is strong acids, strong bases, and salts.

Explanation:

Hope this helps : )

The total volume of 0.250 M sulfuric acid (in milliliters) is needed to react completely with 2.17 g of potassium bicarbonate is 43.4 milliliters approximately.

To determine the volume of 0.250 M sulfuric acid needed to react completely with 2.17 g of potassium bicarbonate, we first need to calculate the moles of potassium bicarbonate. Then, we can use stoichiometry to determine the volume of sulfuric acid.

The molar mass of potassium bicarbonate (KHCO3) is 100.12 g/mol. Therefore, 2.17 g of potassium bicarbonate is equal to 2.17 g / 100.12 g/mol = 0.0217 mol.

The balanced chemical equation for the reaction between sulfuric acid (H2SO4) and potassium bicarbonate is:

H2SO4 + 2KHCO3 -> K2SO4 + 2H2O + 2CO2

From the balanced equation, we can see that one mole of sulfuric acid reacts with two moles of potassium bicarbonate.

Therefore, the number of moles of sulfuric acid required is 0.0217 mol × (1 mol H2SO4 / 2 mol KHCO3) = 0.01085 mol.

Now, we can calculate the volume of 0.250 M sulfuric acid using the equation:

Molarity = moles / volume

0.250 M = 0.01085 mol / (volume in liters)

Solving for the volume in liters:

volume in liters = 0.01085 mol / 0.250 M = 0.0434 L

Finally, we convert the volume from liters to milliliters:

volume in milliliters = 0.0434 L × 1000 mL/L = 43.4 mL

Therefore, approximately 43.4 milliliters of 0.250 M sulfuric acid is needed to react completely with 2.17 g of potassium bicarbonate.

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Answer:

true

Explanation:

In 2 hours, it went 60 metres. 60 / 2 = 30 so true

The mass of 8.7x10^24 atoms of ammonium chloride would be 772.93 grams.

According to standards, 6.022 x \(10^{23\) atoms of any substance is equivalent to 1 mole of the substance.

6.022 x \(10^{23\) atoms = 1 mole

8.7 x \(10^{24\) atoms of ammonium chloride = 8.7 x \(10^{24\) /6.022 x \(10^{23\)

  = 14.45 mol of ammonium chloride.

The molar mass of ammonium chloride is 53.49 g/mol.

The mass of 14.45 mol ammonium chloride would be:

14.45 x 53.49 = 772.93 grams

In other words, 8.7 x \(10^{24\) atoms of ammonium chloride is equivalent to 772.93 grams of ammonium chloride.

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Milk : Homogenous

glass : Homogenous

sugar : compounds

bottled spring water  : Homogenous

distilled water : compounds

air  : Homogenous

alloy bicycle frame  : Homogenous

propane : compounds

baking soda  : Homogenous

When two liquids totally mix, they produce a homogenous combination.

Complete dissolution of a solid in a liquid

When there is no phase difference in a combination, it is said to be homogenous. The composition of a homogeneous mixture is constant and consistent across the whole system.

A mixture of water and ethanol, for instance, is an example of a homogeneous mixture since the two substances are miscible in all amounts.

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Answer:

One million of silver atoms weigh 1.79 xx 10^(-16)g. Calculate the atomic mass of silver. Atomic mass of silver =107.8g=107.8u

The capacity of an atom to absorb electrons can be indicated by its electron affinity. An atom gains electrons more readily the lower its first electron affinity. The ability of an atom to gain electrons is weaker the higher the electron affinity. The ionization energy demonstrates an atom's capacity to lose electrons.

What is effective nuclear charge ?

The attractive positive charge of nuclear protons acting on valence electrons is known as effective nuclear charge. Due to the shielding effect, the effective nuclear charge is always smaller than the total amount of protons in a nucleus.

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We can read an electron configuration as if we are reading the periodic table like a book, from left to right, line after line.

There are multiple blocks on the periodic table, including s, p, d and f.

Rows can be indicated by energy levels, which can be different for each block.

Finally, superscripts define which element on that energy level in a block we are referring to. For instance, a superscript of 2 means the second element in that row.

See the image below for a more visual understanding. (Taken from Study.com).

Given this information and the electron configuration \(1s^22s^22p^63s^23p^64s^23d^1\), we can read the periodic table like a book to determine that the element is scandium.

Answer:

The rocks contain iron that points in the direction the rocks move away from the ridge.

Answer:

Explanation:

Amplitude, or the size of the wave height, affects the loudness. Larger the amplitude, the louder the volume. Period, or the time it takes for the wave to complete one round, determines the pitch. Shorter period (or higher frequency) means higher pitch.

The  higher boiling point is 38.0 g of C₃H₈O₃ in 250. g of ethanol.

The chemical compound ethanol, sometimes referred to as ethyl alcohol, grain alcohol, or alcohol, belongs to the family of compounds known as alcohols and has the molecular formula C2H5OH. A crucial industrial chemical known as ethanol is utilised as a gasoline additive, a solvent, and a raw material for the synthesis of other organic molecules (forming a mixture known as a gasohol). Many alcoholic drinks, such as beer, wine, and distilled spirits, contain the intoxicating substance ethanol.

The process used to make alcoholic drinks, carbohydrate fermentation, and ethylene hydration are the two fundamental methods for creating ethanol.

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The LD50 (Lethal Dose 50) is a measure used in toxicology to determine the lethal dose of a substance that would cause death in 50% of the test population.

However, it is important to note that conducting experiments to determine the LD50 of a substance on humans is unethical and illegal. The LD50 values are typically determined through animal testing, usually on rodents such as rats or mice.To calculate the amount of a substance that would harm a person of a certain weight, various factors need to be considered, including the toxicity of the substance and the individual's weight. In toxicology, a commonly used measure is the oral median lethal dose (LD50) expressed as milligrams per kilogram of body weight (mg/kg).To estimate the harmful dose for an individual of a certain weight, you would need to know the LD50 value of the substance and apply it to the weight of the person. The calculation involves multiplying the LD50 value by the person's weight in kilograms. However, it is crucial to emphasize that estimating harmful doses for humans based on animal LD50 values alone can be inaccurate and potentially dangerous.

It is essential to consult professionals in toxicology or poison control centers to obtain accurate information regarding the toxicity of a substance and its potential effects on human health.

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The height of a ramp does not directly determine the strength of the frictional force between a book and an object.

The strength of the frictional force between a book and an object is not directly influenced by the height of a ramp. The nature of the surfaces in contact, the force forcing the surfaces together (normal force), and the coefficient of friction are some of the variables that affect the frictional force between two surfaces.

The coefficient of friction between the book and the object plays a major role in determining the strength of the frictional force.

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In this compound, the proportion of carbon atoms to oxygen atoms is 12: 11.

What distinguishes an atom of carbon as such?

The nucleus of a carbon atom is made up of six protons and six neutrons, and it is encased in six electrons. According to quantum physics, the first two electrons must occupy the innermost atomic orbital, while the wavefunctions of the following four electrons only partially fill the second standard and three second principal orbitals.

How are atoms located in a compound?

Calculate the element's molar mass using the periodic table. To determine the atoms, the number of moles, divide the given mass in grams by the molar mass. To get the number of atoms, multiply the number of moles by Avogadro's number.

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The amount of hydrogen gas that evolved in the reaction of Cu⁺ with HCl is less than the amount of hydrogen gas that evolved in the reaction of Cu₂⁺ with HCl.

When the Copper (I) ion (Cu⁺) reacts with hydrochloric acid (HCl), it undergoes a single replacement reaction, as follows:

Cu⁺ (aq) + HCl (aq) → CuCl (aq) + H⁺ (aq)

In this reaction, copper (I) ion is oxidized to copper (II) ion (Cu₂⁺) while hydrogen ion (H⁺) is reduced to hydrogen gas (H₂).

The reaction of Copper (II) ion (Cu₂⁺) with hydrochloric acid (HCl) also undergoes a single replacement reaction, as follows:

Cu₂⁺ (aq) + 2HCl (aq) → CuCl₂ (aq) + 2H⁺ (aq)

In this reaction, copper (II) ion is reduced to copper (I) ion (Cu⁺) while hydrogen ion (H⁺) is again reduced to hydrogen gas (H₂).

The second reaction produces twice the amount of hydrogen gas compared to the first reaction.

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During the melting of ice, the ice absorbs heat energy and the molecules move further away; option A.

Melting refers to the process by which a solid substance changes to liquid when heat is added to it.

The melting of pure substances occur at a definite temperature called the melting point of that substance.

The molecules of a substance move further apart when they melt as the attractive forces between them are weakened.

The melting of ice is an example of the process of melting.

During the melting of ice, the ice absorbs heat energy and the molecules move further away.

In conclusion, melting of solids occur when heat is added to the solid.

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Answer: Fractional Distallation

Explanation: this technique relies on the compounds of the mixture. This is able to happen when there is diffrent boilling points.

Hot water stays on the top of cold water and doesn't mix. This is because of difference in DENSITY of water at different temperatures.

When we heat water, then the atoms gain energy from the heat and start moving away from each other. Now, when the atoms move away from each other than the (mass per unit volume) i.e. the density decreases. This makes water lighter.

When the temperature is less i.e. cold water then the atoms are more compactly packed and therefore the density of water is more at lower temperatures.

Since, hot water is lighter than cold water that is why it stays on top of the cold water.

Answer:

Here is ur answer...

Explanation:

2) Half-filled d orbital increases the stability of the element.

The wavelength of the orange line is 610 nm, the frequency of this emission is 4.92 x 10¹⁴ Hz and the energy of the emitted photon corresponding to this orange line is 3.26 x 10⁻¹⁹ J.

"Your question is not complete, it seems to be missing the diagram of the emission spectrum"

the diagram of the emission spectrum has been added.

From the given chart;

The wavelength of the atomic emission corresponding to the orange line is 610 nm = 610 x 10⁻⁹ m

The frequency of this emission is calculated as follows;

c = fλ

where;

\(f = \frac{c}{\lambda } \\\\f = \frac{3\times 10^8}{610 \times 10^{-9}} \\\\f = 4.92 \times 10^{14} \ Hz\)

The energy of the emitted photon corresponding to the orange line is calculated as follows;

E = hf

where;

E = (6.626 x 10⁻³⁴) x (4.92 x 10¹⁴)

E = 3.26 x 10⁻¹⁹ J.

Thus, the wavelength of the orange line is 610 nm, the frequency of this emission is 4.92 x 10¹⁴ Hz and the energy of the emitted photon corresponding to this orange line is 3.26 x 10⁻¹⁹ J.

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At sea level, the air we breathe is 21% oxygen. This means that for every 100 molecules of air we inhale, 21 of them are oxygen molecules.

The remaining 79% is mostly nitrogen, with small amounts of other gases such as argon and carbon dioxide. The percentage of oxygen in the air can vary slightly depending on factors such as altitude and location.

For example, at higher altitudes, the percentage of oxygen decreases because there is less atmospheric pressure.

Additionally, air pollution can also impact the percentage of oxygen in the air. It is important for our bodies to receive this essential gas to function properly, as oxygen is necessary for cellular respiration and energy production.

At sea level, the percentage of oxygen in the air we breathe is approximately 21%. The air is primarily composed of nitrogen (around 78%), oxygen, and trace amounts of other gases such as argon, carbon dioxide, and water vapor.

The composition remains relatively consistent throughout the lower atmosphere, ensuring that we have a sufficient supply of oxygen to sustain life at varying altitudes.

However, air pressure does decrease with elevation, which can affect the availability of oxygen in higher altitudes.

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Answer:

livermorium

Explanation:

The atom with the largest number of neutrons is a tie between livermorium and tennessine. Each of these atoms contain 177 neutrons.

The Sun would take the place of the pin in the real-world, as it is the focus of the elliptical orbits of the planets in our Solar System.

Solar System is a collection of celestial objects that orbit around the sun such as planets, moons, asteroids, comets, and meteoroids. It consists of the sun and everything that orbits it, including all of the planets, moons, asteroids, comets, and meteoroids. The planets and other objects in the Solar System are held in their orbits by the gravity of the sun. The sun is the most important source of energy for the Solar System, providing light and heat for the planets. The planets and other objects in the Solar System are arranged in a specific order, with the sun at the center. The four inner planets are known as the rocky planets, consisting of Mercury, Venus, Earth, and Mars. The four outer planets are known as the gas giants, consisting of Jupiter, Saturn, Uranus, and Neptune. The asteroid belt lies between Mars and Jupiter, while the Kuiper belt lies beyond Neptune.

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A synthesis reaction is one in which a product is made from two  or mote reactants.

The term reaction mechanism refers to the sequence of steps that has to be involved as a reactant is converted to products.

The process of converting ethyne to carboxyllic acid passes through a six step process which includes the oxidation of the substrate using permanganate in basic solution.

The detailed mechanism for the synthesis of a carboxylic acid from ethyne  is shown in the image attached to this answer.

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Here are the given properties. The task is to decide whether each property is a physical property or a chemical property:

1. Solubility: Physical property

2. Flammability: Chemical property

3. Reactivity: Chemical property

4. Color: Physical property

5. Density: Physical property

6. Melting point: Physical property

There are two types of properties: Physical property and Chemical property. In this task, we have to identify which property among Solubility, Flammability, Reactivity, Color, Density, Melting point is Physical property or Chemical property.

A Physical property is a characteristic that defines the behavior or appearance of a substance without any changes in its composition. Physical properties can be identified by measuring, observing, or using physical methods.

A Chemical property is a characteristic that defines the behavior or the ability of a substance to undergo a chemical change or to transform into a new substance. The correct answer is given above.

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The empirical formula of the unknown compound is CH.

The empirical formula of a compound represents the simplest whole number ratio of atoms in that compound. To determine the empirical formula of the unknown compound, we need to use the information given.

First, let's calculate the moles of CO2 produced. The molar mass of CO2 is 44.01 g/mol, so:

moles of CO2 = mass of CO2 / molar mass of CO2
moles of CO2 = 8.71 g / 44.01 g/mol
moles of CO2 = 0.1979 mol

Next, let's calculate the moles of H2O produced. The molar mass of H2O is 18.02 g/mol, so:

moles of H2O = mass of H2O / molar mass of H2O
moles of H2O = 2.38 g / 18.02 g/mol
moles of H2O = 0.132 mol

Now, let's calculate the moles of carbon and hydrogen in the unknown compound. From the balanced chemical equation for the combustion, we know that for every 1 mole of CO2 produced, there is 1 mole of carbon and for every 1 mole of H2O produced, there are 2 moles of hydrogen.

moles of C = moles of CO2
moles of C = 0.1979 mol

moles of H = 2 * moles of H2O
moles of H = 2 * 0.132 mol
moles of H = 0.264 mol

Now, let's calculate the moles of oxygen in the unknown compound. Since the compound contains only carbon, hydrogen, and oxygen, we can subtract the moles of carbon and hydrogen from the total moles of the compound.

moles of O = total moles - moles of C - moles of H
moles of O = 0.1979 mol + 0.264 mol - total moles
moles of O = 0.4629 mol - total moles

Given that the mass of the unknown compound is 3.70 g, we can calculate the moles of the compound using its molar mass.

moles of compound = mass of compound / molar mass of compound
moles of compound = 3.70 g / molar mass of compound

Since we are looking for the empirical formula, we can assume a convenient mass for the unknown compound, such as 100 g. This will make it easier to find the empirical formula.

moles of compound = 3.70 g / molar mass of compound
moles of compound = 100 g / molar mass of compound

Now, we can set up an equation to find the molar ratio of carbon, hydrogen, and oxygen in the compound:

0.1979 mol / moles of compound = moles of C / moles of compound
0.264 mol / moles of compound = moles of H / moles of compound
0.4629 mol - moles of compound / moles of compound = moles of O / moles of compound

Simplifying these equations, we get:

0.1979 = moles of C
0.264 = moles of H
0.4629 - moles of compound = moles of O

Since we assumed a mass of 100 g for the compound, we can convert the moles to grams:

0.1979 mol = 0.1979 * molar mass of C
0.264 mol = 0.264 * molar mass of H
0.4629 - moles of compound = 0.4629 * molar mass of O

Now, we can find the molar masses of carbon, hydrogen, and oxygen. The molar mass of carbon is 12.01 g/mol, the molar mass of hydrogen is 1.008 g/mol, and the molar mass of oxygen is 16.00 g/mol.

0.1979 * molar mass of C = 0.1979 * 12.01 g/mol
0.264 * molar mass of H = 0.264 * 1.008 g/mol
0.4629 - moles of compound * molar mass of O = 0.4629 * 16.00 g/mol - moles of compound

Now, let's simplify and solve for the molar masses:

2.373979 g = 2.521712 g - moles of compound

moles of compound = 0.147733 g

Now, let's substitute the moles of carbon, hydrogen, and oxygen into the equation:

0.1979 = 0.1979 / 0.147733
0.264 = 0.264 / 0.147733
0.4629 - moles of compound = 0.4629 - 0.147733

Simplifying these equations, we get:

1 = 1
1 = 1
0 = 0

This means that the ratio of carbon, hydrogen, and oxygen in the unknown compound is 1:1:0. Therefore, the empirical formula of the unknown compound is CH.

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Answer:

Yes.

Explanation:

Yes, this difference of readings will definitely affect the results of the experiment as well as the E values because the readings taken by both students are different from one another. There is a fault in one of the thermometer because both shows different readings of temperature of the same solution. This will affect the overall experiment and due to this error, we are unable to tell that which one reading is correct so the answer is uncertain or unsure.