You now know that [Pb+2] = 0.17 M. Calculate [Cl-].

The Solubility Product Constant for silver phosphate is 1.3x10^-20 . The molar solubility of silver phosphate in a 0.223 M sodium phosphate solution is 77.51×10M.

A homogenous mixture of one or more solutes in a solvent is referred to as a solution. A typical illustration of a solution is the addition of sugar cubes to a cup of tea or coffee. Solubility is a quality that aids in the dissolution of sugar molecules. Thus, the ability of a substance (solute) to dissolve in a specific solvent can be defined as solubility. Any substance that is dissolved in a solvent and is either solid, liquid, or gas is referred to as a solute.

Ksp = [Ag⁺]³ [PO₄⁻]

1.3×10⁻²⁰=0.256³×s

s=77.51×10M

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The Kc is 2.8 * 10^24

In chemistry, Kp usually refers to the equilibrium constant of a reaction that involves gases. It is defined as the ratio of the partial pressures of the products to the partial pressures of the reactants, each raised to the power of their stoichiometric coefficients.

Kp= Kc (RT)^Δn

Thus;

Kc = Kp/(RT)^Δn

Kc = 2.24 × 10²² /(0.082 * 1546)^-1

Kc = 2.8 * 10^24

Thus the Kc of the reaction when we consider the concentration of the reactants is  2.8 * 10^24

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Refer to the attachments

Answer:

A. 444.5 pm

Explanation:

We know that:

\(Density = \dfrac{mass \ of \ atoms \ in \ unit \ cell}{total \ volume \ of \ unit \ cell}\)

i.e.

\(\rho = \dfrac{n*M}{v_c * N_A}\)

\(\rho = \dfrac{n*M}{a^3 * N_A}\)

in a face-centered cubic crystal, the number of atoms per unit cell is (n) = 4

The molar mass of manganese (II) oxide \([Mn(11)O] = 70.93 \ g/mol\)

Density \(\rho\) is given as 5.365 g/cm³

Avogadro constant \(N_A\) = 6.023 × 10²³ atoms/mol

∴

\(\rho = \dfrac{n*M}{a^3 * N_A}\)

Making th edge length "a" the subject, we get:

\(a^3 = \dfrac{n*M}{\rho* N_A}\)

\(a^3 = \dfrac{4*70.93 \ g/mol}{5.365 \ g/cm^3 *6.023 * 10^{23} \ atoms/mol }\)

\(a^3= 8.78 \times 10^{-23} \ cm^3\)

\(a= \sqrt[3]{8.78 \times 10^{-23} \ cm^3}\)

a = 4.445 × 10⁻⁸ cm

a = 444.5 pm

The unit cell edge length of manganosite is equal to: A. 444.5 pm

Given the following data:

We know that the molar mass of manganese (ll) oxide is equal to 70.93 g/mol.

Avogadro constant = \(6.02 \times 10^{23}\)

Since the rock salt is face-centered cubic crystal, the number of atoms per unit cell, n = 4

To find the unit cell edge length of manganosite:

For a crystal structure, density is given by the formula:

\(Density = \frac{Mass\; of\;atoms\;in\;a\;unit\;cell}{Total\;volume\;of\;a\;unit\;cell}\)

\(\rho = \frac{nM}{N_Aa^3}\)

Where:

Making "a" the subject of formula, we have:

\(a=\sqrt[3]{\frac{nM}{\rho N_A} }\)

Substituting the parameters into the formula, we have;

\(a=\sqrt[3]{\frac{4 \times 70.93}{5.365 \times 6.02 \times 10^{23} }}\\\\a=\sqrt[3]{\frac{283.72}{3.23 \times 10^{24} }}\\\\a=\sqrt[3]{8.79 \times 10^{-23} }}\\\\a = 4.445 \times 10^{-8}\; meters\)

Unit cell edge length, a = 444.5 pm

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Answer:

the answer is c

Energy is transferred from organisms in a food chain and chemical compounds are recycled

Answer:

17.86mL of the HCl solution

Explanation:

The reaction of CaCO₃ with HCl is:

CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O

The concentration of HCl with a pH of 1.52 is:

pH = 1.52 = -log [H⁺]

[H⁺] = 0.0302M = [HCl]

27.0mg = 0.0270g of CaCO₃ (Molar mass: 100.09g/mol) are:

0.0270g of CaCO₃ ₓ (1mol / 100.09g) = 2.70x10⁻⁴ moles of CaCO₃

Moles of HCl to react completely with these moles of CaCO₃ are:

2.70x10⁻⁴ moles of CaCO₃ ₓ (2 mol HCl / 1 mol CaCO₃) =

5.40x10⁻⁴ moles of HCl

As the concentration of HCl is 0.0302M, volume in 5.40x10⁻⁴ moles is:

5.40x10⁻⁴ moles of HCl * (1L / 0.0302mol) = 0.01786L =

The volume in milliliters (mL) of an HCl solution with a pH of 1.52 that can be neutralized by the given CaCO₃ is 17.87 mL

From the question,

We are to determine the volume of HCl that could be neutralized by the given CaCO₃

First, we will write the balanced chemical equation for the reaction

The balanced chemical equation for the reaction is

2HCl + CaCO₃ → CaCl₂ + CO₂ + H₂O

This means

2 moles of HCl is required to neutralize 1 mole of CaCO₃

Now, we will determine the number of moles of CaCO₃ present

Mass of CaCO₃ = 27.0 mg = 0.027 g

Using the formula

\(Number\ of\ moles = \frac{Mass}{Molar\ mass}\)

Molar mass of CaCO₃ = 100.0869 g/mol

∴ Number of moles of CaCO₃ present = \(\frac{0.027}{100.0869}\)

Number of moles of CaCO₃ present = 0.00026977 mole

Since

2 moles of HCl is required to neutralize 1 mole of CaCO₃

Then,

0.00053954 mole of HCl will be required to neutralize the 0.00026977 mole of CaCO₃

∴ 0.00053954 mole of HCl is required to neutralize the CaCO₃

Now, for the volume of HCl solution with a pH of 1.52 required

First,

We will determine the concentration of the HCl

From the given information

pH of the HCl = 1.52

Using the formula

pH = -log[H⁺]

Then,

1.52 = -log[H⁺]

∴ [H⁺] = 10^(-1.52)

[H⁺] = 0.0302 M

∴ The concentration of the HCl is 0.0302 M

Now, for the volume

Using the formula,

\(Volume = \frac{Number\ of\ moles}{Concentration}\)

∴ Volume of HCl required = \(\frac{0.00053954}{0.0302}\)

Volume of HCl required = 0.01787 L

Volume of HCl required = 17.87 mL

Hence, the volume in milliliters (mL) of an HCl solution with a pH of 1.52 that can be neutralized by the given CaCO₃ is 17.87 mL

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Answer:

Explanation:

molar mass Cr(NO3)3 = 238 g/mol

Convert 325 ml to liters:  325 mls x 1 L / 1000 mls = 0.325 L

Convert 10.0 g to moles:  10.0 g x 1 mol / 238 g = 0.0420 moles

Molarity = moles/liters = 0.0420 moles / 0.325 L = 0.129 M (3 sig. figs.)

Hi There!

Black powder is an explosive powder consisting of saltpeter, sulfur, and charcoal, used chiefly in old guns fired for sport, in fireworks, and for spotting charges in practice bombs; black gunpowder.

In addition to being easily ignited by friction and impact, black powder is also extremely sensitive to flame and spark. It ignites violently when unconstrained and explodes when lit in even the slightest amount of confinement.

Thank you,
Eddie

Answer:

Electrolysis is a process in which an electric current is used to drive a chemical reaction that would not otherwise occur.

When an electric current is passed through the cell, the ions in the electrolyte solution are attracted to the electrodes and undergo a chemical reaction at the surface of the electrodes.

hope this helps :)

The product of pressuré and volume of an ideal gas is proportional to the absolute temperature.

An ideal gas is a gas that is not real in nature. It is a hypothetical gas that obeys the ideal gas law.

Just like normal gas particles, the particles of an ideal gas also move randomly. However, unlike normal gas molecules, the molecules of an ideal gas do not interact with one another.

The ideal gas law states that the product of the pressure and the volume of a gas is proportional to the temperature of the gas.

Mathematically, the ideal gas equation is expressed as:

PV = nRT where n = number of mole of the gas and R = constant.

Thus, the best conclusion from the ideal gas law is the product of pressure and volume is directly proportional to the temperature.

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the second options

the number of protons and electrons found in that element

55.03 moles of KCI are produced when 6743 grams of \(KClO_{3}\) decomposes

To determine the number of moles of KCl produced when 6743 grams of \(KClO_{3}\) decomposes, we need to use the concept of molar mass and the balanced chemical equation.

First, let's calculate the molar mass of \(KClO_{3}\)

The molar mass of potassium (K) is approximately 39.10 g/mol.

The molar mass of chlorine (Cl) is approximately 35.45 g/mol.

The molar mass of oxygen (O) is approximately 16.00 g/mol.

So, the molar mass of \(KClO_{3}\) is:

(39.10 g/mol) + (35.45 g/mol) + (3 * 16.00 g/mol) = 122.55 g/mol.

Now, we need to calculate the number of moles of \(KClO_{3}\):

Number of moles = Mass / Molar mass

Number of moles = 6743 g / 122.55 g/mol = 55.03 mol.

According to the balanced chemical equation:

2\(KClO_{3}\) -> 2 KCl + 3 O2,

we can see that for every 2 moles of \(KClO_{3}\), we obtain 2 moles of KCl.

Therefore, the number of moles of KCl produced will be equal to the number of moles of \(KClO_{3}\) since the ratio is 1:1. Thus, 55.03 moles of KCl will be produced.

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Answer: Potassium (K)

Explanation:

Answer:

man my brain like that to

Explanation:

Answer:

man my brain like that to

Explanation:

Answer:2.9 grams

Explanation:i had this question

Answer:

That is the Atomic mass

Explanation:

The element symbol is S, Element name is sulfur, and

Atomic number is 16

Answer:

the rate of a reaction is measured by how fast a REACTANT is used up or how fast a PRODUCT is formed

Answer:

the theory of evolution states that all living things which exist today, and many more that are now extinct, evolved from simple life forms which first developed 3 billion years ago.

Explanation:

Answer:

See the answer below

Explanation:

The complete question can be seen in the attached image.

Phenolphthalein is an indicator that is often utilized in an acid-base reaction to indicate the endpoints of such reactions due to its ability to change color from pink/colorless to colorless/pink depending on if the final solution is acidic or basic.

Phenolphthalein is usually colorless in acidic solutions and appears pink in basic solutions. The more basic or alkaline a solution is, the stronger the pink color of phenolphthalein. Hence;

1. Ammonia with a pH of 11 is basic, phenolphthalein will turn pink.

2. Battery acid with a pH of 1 is acidic, it will remain colorless.

3. Lime juice with a pH of 2 is acidic, it will remain colorless.

4. Mashed avocado with a pH of 6.5 is acidic, it will remain colorless.

5. Seawater with a pH of 8.5 is basic, it will turn pink.

6. Tap water with a pH of 7 is neutral, it will remain colorless

Phenolphthalein is a chemical compound with the formula\(C_{20}H_{14}O_4\). Phenolphthalein is often used as an indicator in acid-base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions

Phenolphthalein works as in:-

According to the question, There are 5 solutions having different ph and the indication only turns basic solution to pink

The indicator only turn the basic solution pink and these solutions are as follows,

Hence, these are the answer.

For more information, refer to the link:-

Answer:

resultant

Explanation:

It is important to record all accidents and breakages that occur in the laboratory to prevent them from happening again.

Laboratory accident is defined as the type of accident that occurs in the laboratory leading to harm.

Example of laboratory accidents include the following:

A record of these type of laboratory accidents would hel prevent it's reoccurrence.

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Answer:

B- This behavior helps adult elephants protect their offspring from predators

Explanation:

Answer: Which of the following is most likely the result of adult elephants positioning their young in the middle of the herd?

B. This behavior helps adult elephants protect their offspring from predators

Explanation:

It is because adult elephants are well aware of the dangers predators pose and want to keep their young safe from them by placing them in the center of the herd. The positioning of young elephants in the middle of the herd acts as a protective barrier, and makes it more challenging for predators to approach and attack the young elephants.The herd provides a layer of defense against potential predators, making it harder for them to isolate one elephant. This protective behavior ensures that the young elephants are less vulnerable to attacks by predators.

The total mass of the reactants equals the total mass of the products the statement about balanced chemical equations is true. Hence, option B is correct.

This is known as the Law of Conservation of Mass, which states that matter can neither be created nor destroyed in a chemical reaction. In other words, the mass of the reactants must equal the mass of the products in a balanced chemical equation.

While the identities of the atoms may change during a reaction, the total number of atoms of each element on both sides of the equation must be the same, thus leading to the conservation of mass.

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Answer:

H2O2

Explanation:

By numbering the atoms we know about that it’s Hydrogen Peroxide

the answer should be a the the question

Answer:

cannot be measure

Hope this helps :) !!!

The statement "Superficial zone chondrocytes can get compacted under physiological loading: a multiscale finite element analysis" is true.

Superficial zone chondrocytes are the most exposed to mechanical loading and are therefore at risk of being compacted under physiological loading. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

This means that chondrocytes in the superficial zone of cartilage are at risk of being compacted under the physiological loading that it experiences in everyday life. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

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