What happens to an earthquake's P-waves when they strike the liquid core?


A - They change into S-waves

B - They bounce off

C - They are absorbed

D - They change into R-waves

Tommy can expect to produce 6.10 grams of potassium chloride.

To determine the amount of potassium chloride produced, we first need to determine the limiting reagent, which is the reactant that is completely consumed in the reaction.

To do this, we can convert the given masses of potassium phosphate and magnesium chloride into moles using their respective molar masses:

Molar mass of K₃PO₄ = 3 x 39.1 g/mol (K) + 1 x 30.97 g/mol (P) + 4 x 16.00 g/mol (O) = 212.27 g/mol

Molar mass of MgCl₂ = 1 x 24.31 g/mol (Mg) + 2 x 35.45 g/mol (Cl) = 95.21 g/mol

Moles of K₃PO₄ = 5.79 g / 212.27 g/mol = 0.0273 mol

Moles of MgCl₂ = 4.92 g / 95.21 g/mol = 0.0517 mol

Now, we need to determine which reactant is the limiting reagent by comparing the mole ratios of the reactants in the balanced chemical equation:

For every 2 moles of K₃PO₄, we need 3 moles of MgCl₂ to react completely.

The mole ratio of K₃PO₄ to MgCl₂ is therefore 2:3.

Since we have more moles of MgCl₂ than required by the mole ratio, MgCl₂ is in excess and K₃PO₄ is the limiting reagent. This means that all of the K₃PO₄ will be used up in the reaction and there will be some MgCl₂ left over.

Using the mole ratio of the balanced equation, we can now calculate the moles of KCl produced:

For every 2 moles of K₃PO₄, we get 6 moles of KCl.

The mole ratio of K₃PO₄ to KCl is therefore 2:6, or 1:3.

Moles of KCl produced = 0.0273 mol K₃PO₄ x (6 mol KCl / 2 mol K₃PO₄) = 0.0819 mol KCl

Finally, we can convert the moles of KCl produced into grams using the molar mass of KCl:

Molar mass of KCl = 1 x 39.1 g/mol (K) + 1 x 35.45 g/mol (Cl) = 74.55 g/mol

Grams of KCl produced = 0.0819 mol KCl x 74.55 g/mol = 6.10 g KCl

Therefore, Tommy can expect to produce 6.10 grams of potassium chloride.

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Answer: A..(studying how the mayfly population affects the number of trout in a stream)

Uncovering the genetic makeup of the eastern cottontail rabbit would be directly related to the science of ecology.

Option D is correct.

Human science, population, community, ecosystem, and biosphere are all parts of ecology, which is a branch of science. The study of organisms, their environment, and how they interact with one another and their environment is known as ecology.

The relationship between living things, like humans, and their physical environment is known as ecology. It aims to comprehend the crucial connections between animals and plants and the environment in which they live.

Which situation would be directly related to the science of ecology?

A. studying how the mayfly population affects the number of trout in a stream

B. studying how the mayfly population affects the number of trout in a stream

C. developing strains of corn that can withstand a combination of drought and high winds

D. uncovering the genetic makeup of the eastern cottontail rabbit

E. learning about foods that benefit the heart and blood vessels

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The most reactive ring in electrophilic aromatic substitution reactions in this tetracyclic aromatic compound is ring a.

The reactivity of a ring in electrophilic aromatic substitution reactions is determined by the number and position of electron-donating or electron-withdrawing groups attached to the ring. In this compound, ring a has two electron-donating groups (a methyl group and a methoxy group) attached to it, which increase its electron density and make it more susceptible to attack by electrophiles.

On the other hand, rings b, c, and d have electron-withdrawing groups attached to them, which decrease their electron density and make them less reactive towards electrophiles. Therefore, ring a is the most reactive in electrophilic aromatic substitution reactions in this compound.

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Answer:

a. Cellular Respiration produces more ATP than Anaerobic Respiration.

Explanation:

Cellular Respiration creates a total of 36-38 ATP per round. Anaerobic processes only produce 2 ATP per cycle.

When the ocean gets warmer, this can cause more intense and frequent b. This is because warmer water holds more moisture, which can lead to stronger winds and heavier rainfall.

Additionally, warmer water can create more unstable atmospheric conditions, which can also lead to the formation of storms. Here are some of the effects of warmer oceans on storms:

More intense storms: Warmer water can lead to stronger winds and heavier rainfall, which can make storms more intense. For example, Hurricane Katrina was a Category 5 hurricane that caused widespread damage in the Gulf Coast region of the United States. The hurricane was made stronger by the warm water in the Gulf of Mexico.

More frequent storms: Warmer water can also lead to more frequent storms. For example, the number of tropical storms and hurricanes has increased in recent years. This is likely due to a combination of factors, including climate change and warmer oceans.

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Answer:

D?

Explanation:

I think D hmm is the answer if I am wrong pls anyone or someone type the right answer but for me is d

Answer:

NOT D!!!!

Explanation:

I am taking the quiz on ck12, it is NOT "none of the above"

Actually the main difference:

Homogeneous mixture is a mixture consisting of constituent substances that are mixed evenly.  As a result, each part of the mixture has the same properties

 In contrast to heterogeneous mixtures where the constituent substances are not mixed evenly.  Thus, there are parts of the mixture that have different properties.

Differences between Homogeneous and Heterogeneous Mixtures in detail

1. Differences Between Homogeneous and Heterogeneous Mixtures Based on Their Definitions

Homogeneous is a mixture that is uniform in all its parts and forms a single phase.  An example of a homogeneous mixture is air.  In addition, homogeneous mixtures can also be commonly referred to as solutions.

Meanwhile, heterogeneous mixture is a mixture that is not similar or not uniform, and the formation of two or more phases, as well as the existence of a clear boundary between the phases.  Examples of heterogeneous mixtures include oil and water, a mixture of lime and sand, then a mixture of iron powder and carbon, and many others.

2. Differences Between Homogeneous and Heterogeneous Mixtures Based on Their Characteristics

The characteristics of this homogeneous mixture are in the form of constituent particles that cannot be distinguished from one another, have almost the same color, and have a similar taste.  Not only that, substances that have been mixed have the same ratio, have the same concentration level, and are in the form of solids, gases, and liquids.

And this mixture cannot be separated, if you use a mechanical method, but you can separate it when you use a more difficult method.  The example of such separation is similar to that of distillation.  That is one of the differences between homogeneous and heterogeneous mixtures based on their characteristics.

3. Difference between Homogeneous and Heterogeneous Mixtures Based on Their Properties

The nature of this homogeneous mixture has the property that if every part of a homogeneous mixture is often the same, both in terms of color, taste, and comparison.  An example of the nature of the homogeneous mixture is a spoonful of sugar dissolved in water.

While the nature of a heterogeneous mixture is a mixture of two or more substances, which have properties, the constituent substances are not the same or the alias is not uniform.  So that the two mixed substances can still be distinguished by the particles.

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Hydrolysis occurs when Fe2O3 is dissolved in water, resulting in the formation of Fe(OH)3 and H+ ions. For every Fe in Fe2O3, there are 1.5 O. Thus, the iron content of Fe2O3 is reduced.

Water in the liquid state serves as the solvent in an aqueous solution. In other words, water molecules surround and integrate solute (dissolved) ions and molecules into their web of bonds. Following that, the dissolved species dispersed all over the water.

Aqueous solutions are made up of water and one or more dissolved materials. Solids, gases, or other liquids can all dissolve in an aqueous solution.

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Question:

How Many Particles Fe2O3 Will Produce In An Aqueous Solution (In Water).

The Ka of niacin can be calculated using the pH and concentration of the niacin solution as 5.9 × 10⁻⁹. Niacin is a weak acid. Thus, the correct option is A.

The acidity constant of a weak acid is known as the Ka. It is a measure of the acidity of a weak acid, which is a substance that does not completely dissociate in water. The expression for the acid dissociation of the weak acid (HA) can be given as follows:

HA ⇋ H⁺ + A⁻

Initially, the concentration of the HA in the solution is [HA]. When an acid is added to the water, the concentration of hydrogen ion [H⁺] is increased. At the same time, the concentration of the conjugate base [A⁻] increases. At equilibrium, the concentration of the three substances will be as follows:

[H⁺] = x[A⁻] = x[HA] = [HA] - x

The pH of a solution can be calculated from [H⁺] as follows:

pH = - log10 [H⁺]

The Ka is calculated using the equilibrium expression below:

Ka = [H⁺][A⁻] / [HA]

Substitute the given values into the equations.

pH = 3.26

pH = -log10 [H+]

[H+] = 6.9 × 10⁻⁴

[HA] = 0.02M

Ka = [H+][A-] / [HA]

Ka = (6.9 × 10⁻⁴)² / (0.02 - 6.9 × 10⁻⁴)

Ka = 5.9 × 10⁻⁹

Hence, the Ka of niacin is 5.9 × 10⁻⁹.

Therefore, the correct option is A.

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Answer : A

Explanation : Surface-active compounds/agents (surfactants) Substances which have the effect of reducing the surface tension of a solvent, an example being a detergent/surfactant or soap dissolved in water. ... Both synthetic detergents and soaps are surfactants. Surfactants See "Surface-active compounds/agents".

According to the context, a detergent is an example of a synthetic  organic compound.

They are a group of synthetic organic compounds that have the property of lowering the surface tension of the liquids in which they are dissolved.

These contain surfactant substances that help in penetration, soaking, emulsification, dispersion, solubilization.

Therefore, we can conclude that according to the context, a detergent is an example of a synthetic organic compound.

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Answer:

i beleive iron

Explanation:

The energy transformation in riding bicycle is given as conversion of kinetic to thermal by warm generated with friction. Thus, option D is correct.

Energy is defined as the capacity of the person to do work. The conservation of energy defines that energy not be created or destroyed, it is converted from one form to another.

The riding bicycle requires the energy for paddling and moving. The energy of doing work is kinetic energy.

In riding and paddling, the kinetic energy is the energy generated with the friction and is given as thermal energy giving warmth. Thus, option D is correct.

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Answer:

1. kinetic

2. transferred

3. transformed into

Explanation:

chemistry 2022

Answer: Calcium carbonate is another example of a compound with both ionic and covalent bonds. Here calcium acts as the cation, with the carbonate species as the anion. These species share an ionic bond, while the carbon and oxygen atoms in carbonate are covalently bonded

Explanation:

Here is a picture that might help :)

Answer:

Synthetic products are processed and changed chemically by people to produce a new substance with different characteristics.

Answer:

Twelve electrons

Explanation:

If we look at the product side, we will notice that iron lost twelve electrons and oxygen gained twelve electrons.

Hence, we have 4Fe^3+ and 2O3^2- showing twelve electrons lost/gained.

Answer:

How many electrons does the iron half-reaction lose?

12

How many electrons does the oxygen half-reaction gain?

12

What is the total number of electrons that are moved in this oxidation-reduction reaction?  12

Explanation:

Answer:

it looks like the answer that your looking for is B.

Answer:

B may be the answer.

Explanation:

Answer:

Half-life = 28.8 years

Explanation:

The radioactive decay of an atom follows the equation:

Ln[A] = -kt + ln[A]₀

Where [A] is actual amount of isotope after time t; k is decay constant and [A]₀ initial amount of isotope

Solving for k:

Ln[0.393g] = -k*10yrs + ln[0.500]

-0.2408 = -k*10yrs

0.02408yrs⁻¹ = k

Half-life, is:

Half-life = ln 2 / k

Half-life = ln 2 / 0.02408yrs⁻¹

Half-life = 28.8 years

The isotope \(38Sr^{90}\) is one of the extremely hazardous species in the residues from nuclear power generation. The strontium in a 0.500-g sample diminishes to 0.393 g in 10.0 yrs, the half-life is - 28.78

Formula:

radioactive decay follows first-order kinetics,  

k = \(\frac{1}{t}ln\frac{a}{x}\)

Given:  

a = initial amount = 0.5 g  

x = amount of isomer after 10 years = 0.393 g  

t= time   = 10 years

Solution:  

k =  \(\frac{1}{10}ln\frac{0.5}{0.393}\)

   = 0.02408  

k = \(\frac{0.693}{t/2}\)  

T(1/2) = half-life time

= \(\frac{0.693}{k}\)

=   \(\frac{0.693}{0.02408}\)

= 28.78 years.

Thus, The isotope \(38Sr^{90}\) is one of the extremely hazardous species in the residues from nuclear power generation. The strontium in a 0.500-g sample diminishes to 0.393 g in 10.0 yrs, the half-life is - 28.78

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Answer:

Explanation:

The speed of an object can be found by using the formula

\(v = \frac{d}{t} \\ \)

where

d is the distance

t is the time taken

From the question we have

\(v = \frac{100}{30} = \frac{10}{3} \\ = 3.333333...\)

We have the final answer as

Hope this helps you

The term "partial pressure" refers to the amount of pressure that each gas in a mix exerts. A mole fraction of the a gas,x, can also be used to formulate Dalton's law.

The partial pressure formula: what is it?

Partial pressures can be calculated in one of two ways: 1) To determine the individual pressures of each gas in a mixture, use PV = nRT. 2) Determine the proportion of pressure from of the total pressure that may be assigned to each single gas by using the molar concentration of each gas.

What is the name for partial pressure?

The idea of partial pressure is derived from the fact so each individual gas contributes to the overall pressure in a given proportion, which corresponds to its partial pressure. In order to characterise all the pieces, it is essentially equivalent to taking a percent or proportion of the whole.

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Answer:

(the numbers are suppose small on the bottom right of the letter)

1. H2SO4 + K

2. H2SO4 + Mg

3. HCL + Na

Answer:

A) a pure substance

Explanation:

Everything in the universe is made from elements. An element has unique number of protons and electrons. Due to the number of neutrons present in the nucleus, an element can be either stable or radioactive. In other words we can say an element has one type of atoms. C,H,O,N and P can be taken as examples for elements.

Hope this helps! Have a great day!

Answer:

uhh i learned thisin like 6th grade, its A.)

Explanation:

<3 i did not look at the other persons answer i swear U-U

The number of atoms in 3 moles K of the particle is 1.806 x 10²⁴ atoms.

The value of one mole of an atom is equal to exactly 12 grams of pure carbon-12.

12.00 g (C-12 ) = 1 mol C-12 atoms = 6.02 × 10²³ atoms .

The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 10²³).

The number of atoms in 3 moles K of the particle is calculated as follows;

= 3 moles  x   6.02 × 10²³ atoms / mol

= 1.806 x 10²⁴ atoms

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The percent yield of the reaction is 70%, since 3.5 g of aluminum oxide is produced when 2.5 g of aluminum reacts with 2.5 g of oxygen gas.

The percent yield of a reaction can be calculated if the amount of product produced and the amount of reactants used are known. First, the theoretical yield of the reaction must be determined. This is calculated by multiplying the amount of reactant used by the mole ratio of the reaction. In the given experiment, 2.5 g of aluminum will react with 2.5 g of oxygen, thus the theoretical yield of aluminum oxide will be 5 g. The actual yield is 3.5 g, so the percent yield of the reaction is determined by dividing the actual yield (3.5 g) by the theoretical yield (5 g) and then multiplying by 100. The result is 70%, meaning 70% of the theoretical yield of the reaction was achieved.

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When the temperature conversion function =CONVERT(-22, "C", "F") is applied, a reading of -22 °C in Fahrenheit is displayed. On a variety of scales, including the Fahrenheit and Celsius systems, temperature is a unit that is used to denote hotness or coolness.

Heat energy will logically go from a hotter (body with a higher temperature) to a colder (body with a lower temperature) according to temperature (one at a lower temperature).

A temperature is a measurement used to express how hot or cold something is. It demonstrates how heat energy naturally flows from a hotter body to a cooler body and can be expressed in terms of any number of arbitrary scales (one at a lower temperature).

A match is burning at a far greater temperature than an iceberg, yet an iceberg has a significantly higher total heat energy than a match. Temperature is not the same as the energy of a thermodynamic system.

The temperature, along with pressure, density, and other similar properties, is referred to as an intense property as opposed to extensive characteristics like mass or volume—one that is independent of the quantity of stuff being addressed.

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so 68 + 83 is 182 easy done

The number of electrons, protons, and neutrons in argon is 18, 18 , and 22 respectively, the number of electrons , protons and neutrons in sulphur-32 is 16, 16, 16 respectively. The number of protons, neutrons, and electrons are 6 , 8 and 6. And for uranium-238 , 92 protons , 92 electrons and 146 neutrons.

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Answer:

\(\boxed {\boxed {\sf 0.3375 \ mol \ NaCl}}\)

Explanation:

Molarity is found by dividing the moles of solute by liters of solution.

\(M=\frac{moles \ of \ solute }{liters \ of \ solution}\)

We know the molarity is 0.45 M and there are 0.750 liters of solution. The solute is NaCl (sodium chloride). We can substitute the values into the formula.

\(0.45 \ M = \frac{ moles \ of \ NaCl}{ 0.750 \ L }\)

The molarity (M) can also be represented by mol/L

\(0.45 \ mol/L = \frac{ moles \ of \ NaCl}{ 0.750 \ L }\)

We are solving for the moles of solute, so we must isolate the numerator. It is being divided by 0.750 liters. The inverse operation is multiplication, so multiply both sides of the equation by 0.750 L.

\(0.750 \ L * 0.45 \ mol/L = \frac{ moles \ of \ NaCl}{ 0.750 \ L }*0.750 \ L\)

The liters will cancel out.

\(0.750 * 0.45 \ mol = { moles \ of \ NaCl}\)

\(0.3375 \ mol \ = moles \ of NaCl\)

There are 0.3375 moles of NaCl in a 0.750 liter solution with a molarity of 0.45 M.

Answer:

Acid

Explanation:

The pH level is below 7